User Manual. Low Voltage Switchgear. usa.siemens.com/switchgear

Transcription

1 User Manual Low Voltage Switchgear usa.siemens.com/switchgear

2 Low Voltage Switchgear Table of Contents 1. Overview Components and Features Remote Enclosure IPC427D CPU ITC2200 HMI Display Network Switch Optical Link Module Switchgear WL Circuit Breaker Network Switch PROFIBUS Terminator Optical Link Module Optional Power Meter Internet/Intranet GPS Input/Output Racks Specifications Environmental Industry Standards UL Listing Arc Resistant Seismic Qualification Quick Start Guide LVS System Schematic Review Visual Inspection Equipment Installation Customer Connections Powering the Equipment System Health Check Customer Configuration Quick Start Checklist System Screens Elevation Siemens Logo Alarm Icon Information Bar Gear Diagram Button Bar One Line Transformer Symbol /59,810/U,47 Symbol Breaker Icons Mimic Bus Meter Icons Button Bar Maintenance Mode Help System Topology User Administrator Exit Runtime Show Software Version Clean Screen Set Breaker Restrictions Edit Nameplates Bay Blocking/Load Shed System Events View Alarm Log Open Task Manager User View Default Passwords Active Alarms Self-Reset Alarms Latching Alarms Alarm Reset Button Day Load Study Documentation WL Monitoring Screens Breaker Controls/Monitoring Individual Time Sync DAS Activation Open/Close Breaker Monitor and Configure Monitor Screen Configure Screen...21 Low Voltage Switchgear User Manual Low Voltage Switchgear User Manual i

3 5.2 Breaker Metering Event Trip Log Event Log Trip Log Harmonic Analysis Breaker Overview Trip Details Breaker Details Min/Max Min/Max of Current Min/Max of Frequency, THD and Power Min/Max of Temperature Min/Max of Voltage Diagnostics Diagnostic Message Shutdown Data CubicleBUS Current Metering Function Trip Current Threshold Alarms Trip Unit Alarms Breaker Configuration Communications and Metering Com 15 Address Primary Transformer Primary Voltage Secondary V.T. Voltage Incoming Direction Phase Rotation Basic Type Data Point of the Basic Type IP Address of the BDA Protective Parameters L-Trip (IR) Time Lag Class (TR) t-Curve for L Phase Loss Sensitivity Thermal Memory S-Trip (ISD) Delay Time (tsd) t-Curve for S I-Trip (Ii) N-Protection (IN) Ground Fault (lg) Delay Time (tg) t-Curve for G Ground Fault Alarm (lg2) Load Management Arc Flash Calculator Protective Parameters Calculation Guide Extended Protective Functions Protection Function Limits Threshold Alarms Threshold Alarms Waveform Control Logging Data Logging Optional Devices Source Metering Trending SPD Door Monitoring Trip Coil Monitoring GPS Time Sync HRG Autothrowover Autothrowover Definition Configurations System Control Standard Control Features Optional Control Features Autothrowover Components and Features Standard Components and Features Optional Components and Features Setpoints/Controls Screen Timer Setpoints Selector Switches Protective Relays Load Test Sequence of Operation Automatic Mode Loss of Primary Return to Primary Standard Open Transition Return to Primary Optional Closed Transition Manual Mode Standard Open Transition Optional Closed Transition Optional System Capabilities Load Shedding and Load Prioritization Peak Shaving Test Sequences Main-Tie-Main or Main-Main Configuration Standard Main-Tie-Main or Main-Main Configuration Optional Main-Tie-Main or Main-Main Configuration Main-Generator Configuration Standard Main-Generator Configuration Optional Main-Generator Configuration Upper Level System Tie-In Troubleshooting Service and Support Appendix How to Access the Siemens Download Center ii Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 1iii

4 1. Overview Siemens Low Voltage Switchgear Siemens Low Voltage Switchgear (LVS) is preconfigured, preprogrammed and factory tested metal-enclosed switchgear that provides out-of-the-box remote monitoring, configuration and control of embedded intelligent devices. The LVS Central Processing Unit (CPU) communicates with the integrated and autonomous intelligent devices (Figure 1) embedded in the low voltage switchgear via a Human Machine Interface (HMI) touch screen panel. The embedded intelligent devices include: 1.1 Components and Features Remote Enclosure IPC427D CPU The IPC 427D Microbox CPU is pre-programmed to support remote configuration, monitoring, and control of the intelligent devices embedded in the Sm@rtGear Low Voltage Switchgear. Equipped with the third generation Intel Core i7 with Turbo Boost and a Solid State Disk, this compact CPU provides fast and maintenance free computing performance. Highly resistant to temperature, vibration, shock and electromagnetic interference, the CPU is built with an aluminum die-cast front for an IP65 degree of protection Network Switch The Scalance X-200 switch offers a wide variety of functions, including PROFINET diagnostics or redundancy functions for seamless networks. The network switch consolidates all of the Ethernet based devices into one communication connection that runs between the low voltage switchgear and the remote HMI enclosure. It also supports SNMP network monitoring. WL breakers Digital meters Protective relays Surge protection devices Environmental sensors Figure 2 System Architecture The remote HMI communicates with the entire System Architecture (Figure 2) to monitor, configure and control the Sm@rtGear LVS from a safe distance outside of the arc flash boundary in the electrical room or in a control room. Just a few of the preconfigured and built-in features available with the Sm@rtGear LVS include: Figure 1 Sm@rtGear Low Voltage Switchgear Remote configuration, monitoring and control Arc flash hazard calculation Self-diagnostic data Preventative/predictive maintenance data Environmental data Product documentation Maintenance/status reports that summarize data for all installed devices. The Sm@rtGear LVS eliminates the need for upstream PMCS, PCS, DCS or SCADA systems. However, it is well equipped to support upstream supervisory systems using any communications protocol, including MODBUS, MODBUS TCP/IP, PROFIBUS, PROFINET and ETHERNET. Figure 3 IPC427D CPU ITC2200 HMI Display The 22 touch panel HMI is pre-configured and programmed with an application specific graphical user interface (application specific elevation and one-line drawings). Energy saving LED background lighting can be dimmed up to 100 percent. The touch panel is long-lasting and luminous in brightly lit working environments. Figure 5 Scalance X Optical Link Module (OLM) PROFIBUS OLMs convert electrical PROFIBUS interfaces (RS-485 level) into optical PROFIBUS interfaces. The modules can be integrated in existing PROFIBUS fieldbus networks using optical transmission technology. The OLM offers extra protection to the device by converting PROFIBUS to fiber and running the signal via an optic ring. The OLM in the low voltage switchgear is connected to the OLM in the remote HMI enclosure via redundant fiber optic cable. The touch screen panel is mounted outside the arc flash boundary, greatly reducing the risk of arc flash injury for normal breaker operations, including open/close, racking, maintenance mode activation and configuration. Service, parts and repairs are available seven days a week, 24 hours a day, 365 days a year. Just call Siemens Industry Customer Care Center (ICCC) at Field installation requires a maximum of three communication cables and one control power cable that connects the Sm@rtGear LVS to the remote HMI. The time and cost to connect multiple devices in a typical switchgear to a hardwired remote control panel is eliminated. Figure 4 ITC2200 HMI Display Figure 6 Optical Link Module 2 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 3

5 1.1.2 Switchgear Optional WL Circuit Breaker Siemens WL circuit breakers offer an Extended Instantaneous Protection (pat. pending) function delivering 100% of the full withstand rating of the frame and the breaker s maximum Interrupting Rating. ETU 776 trip units are installed in all breakers with Dynamic Arc Flash Sentry (DAS) to reduce arc flash incident energy. Integrated racking handles, and front-mounted terminal blocks reduce installation time and errors. Safety-related features include a visible ready-to-close indicator, customizable interlocking and mechanical trip indication PROFIBUS Terminator The PROFIBUS terminator is an active bus terminator that allows bus nodes to be switched off, removed or replaced without impairing data transfer Power Meter The SENTRON PAC3200, PAC 4200 and 9610 power metering devices store, monitor and display all relevant low voltage power distribution parameters in single-, two- and three-phase measurements. A comprehensive, parameterizable signaling system monitors application-specific events, including limit violations and operator interventions GPS The Spectracom GPS time server obtains the time of day for synchronizing PCs, servers, routers and switches on the LAN. The GPS synchronizes the system to IRIG-B or to SNTP timecode. With the use of the timeserver the PC is synchronized with the timeserver and the time sync is written to the downstream breakers every 10 ms. (WL breakers may vary depending on the switchgear design. See the As Built drawings within the Documentation screen 4.5 for exact WL breakers installed). Figure 13 Spectracom GPS Time Server Figure 7 WL Circuit Breaker Network Switch The Scalance X-200 switch offers a wide variety of functions, including PROFINET diagnostics or redundancy functions for seamless networks. The network switch consolidates all of the Ethernet based devices into one communication connection that runs between the low voltage switchgear and the remote HMI enclosure. It also supports SNMP network monitoring. Figure 9 PROFIBUS Terminator Optical Link Module (OLM) PROFIBUS OLMs convert electrical PROFIBUS interfaces (RS-485 level) into optical PROFIBUS interfaces. The modules can be integrated in existing PROFIBUS fieldbus networks using optical transmission technology. The OLM offers extra protection to the device by converting PROFIBUS to fiber and running the signal via an optic ring. The OLM in the low voltage switchgear is connected to the OLM in the remote HMI enclosure via redundant fiber optic cable. Figure 11 Power Meters Internet/Intranet Sm@rtAccess enables communication between HMI systems in production and system control applications. Sm@rtService supports remote maintenance of HMI systems. Remote access to HMI systems can be reached by means of Internet, Intranet, and LAN Input/Output Racks Input/output racks can be supplied into the switchgear to receive customer specific I/Os. NOTE: For additional information on optional devices refer to section 8. For additional information on the components featured in the Sm@rtGear LVS refer to Siemens Download Center (Appendix 11.1). Figure 12 Internet/Intranet Figure 10 Optical Link Module Figure 8 Scalance X Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 5

6 2. Specifications 3. Quick Start Guide 2.1 Environmental Storage Environment 40 to 110 degrees F 5 to 80% humidity (non-condensing) Operating Environment 0 to 104 degrees F 5 to 90% humidity (non-condensing) 2.2 Industry Standards Type WL switchgear with power circuit breakers are designed, tested and constructed in accordance with the following industry standards: UL Listing Underwriters Laboratories listing mark (UL) is supplied for each vertical section provided all devices within a vertical section are UL Listed or UL Recognized and suitable for the intended use. All circuit breaker draw out elements are UL Listed. Optional CSA compliance with cul labeling is available Arc Resistant Optional Type WL arc resistant low voltage switchgear is available and is UL listed to ANSI/IEEE C Type 2B arc resistant accessibility rating with maximum internal arcing short-circuit current rating of and 635V. This section contains instructions pertaining to the receipt, inspection, installation and testing of Siemens Sm@rtGear Low Voltage Switchgear. 3.1 Sm@rtGear LVS System Schematic Review Every Sm@rtGear LVS shipment includes a system schematic drawing that was created for that particular system configuration. A hard copy of the Sm@rtGear LVS system schematic is located in the As-Built drawings package found in the low voltage switchgear. An electronic copy is also located in the Documentation folder on the HMI. Attached below is a typical Sm@rtGear LVS system schematic. UL 1558 Metal-Enclosed Low Voltage Power Circuit Breaker Switchgear ANSI C Metal-Enclosed Low Voltage Power Circuit Breaker Switchgear ANSI C37.50 Test Procedure for Low Voltage AC Power Circuit Breakers Used in Enclosures ANSI C37.51 Conformance Testing of Metal-Enclosed Low Voltage AC Power Circuit Breaker Switchgear Assemblies NEMA SG5 Power Switchgear Assemblies Applicable requirements of the National Electric Code (NEC) UL 1066 Low Voltage AC and DC Power Circuit Breakers Used in Enclosures ANSI C37.13 Low Voltage AC Power Circuit Breakers Used in Enclosures ANSI C37.16 Preferred Ratings, Related Requirements, and Application for Low Voltage Power Circuit Breakers and AC Power Circuit Protectors ANSI C37.17 Trip Devices for AC and General Purpose DC Low- Voltage Power Circuit Breakers NEMA SG3 - Low Voltage Power Circuit Breakers Seismic Qualification Seismic qualification to all major seismic construction standards (IBC, UBC, CBC, SBC, BOCA and IEEE 693) is available. Figure 14 System Schematic 6 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 7

7 3.2 Visual Inspection Locate the remote HMI display enclosure. Open the enclosure and identify the customer connection components OLM, network switch and control power terminal blocks. These components are shown on the LVS system schematic (located in Section 3.1, Figure 14). A photo of each component is shown in Section Locate the low voltage switchgear auxiliary compartment that contains a second OLM, network switch and control power terminal blocks. These components are shown in Figures 15 and 16. A photo of each component is shown in Section 1.1. Power Terminal Block Power Terminal Block OLM OLM Network Switch Figure 16 Auxiliary 3.3 Equipment Installation Network Switch Figure 15 Remote Enclosure Ensure the Sm@rtGear LVS has been installed per instruction and installation guide 11-C or 11-C Perform inspections and tests necessary for the specific application to ensure the Sm@rtGear LVS is safe and ready for CPU testing/setup Mount remote HMI enclosure, per industry standards, outside of the arc flash zone. Mounting is preferable in a controlled environment in view of the electrical room. 8 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 9

8 3.4 Customer Connections 3.5 Powering the Equipment Using the LVS system schematic (Figure 14) ensure that the following customer connections, highlighted in red circular dashes, are made: #14 SIS control wire must be run from the control power terminal blocks in the LVS to the control power terminal blocks in the remote HMI enclosure. This wire cannot occupy the same conduit as fiber optic or RJ-45 communication cables Silica glass fiber optic cable 50/125 or 62.5/125 with BFOC/2.5 connectors must be run from the OLM module in the LVS to the OLM located in the remote HMI enclosure. This cable can be run in the same conduit as the RJ-45 communication cable As a standard, control power for the CPU, HMI and other components in the remote HMI comes from the Switchgear. The majority of the Sm@rtGear LVS components require 24VDC. AC to DC converters are included in the Sm@rtGear LVS system. A 3000 VA UPS also provides limited backup power for the Sm@rtGear LVS system. Purchase of a higher rated UPS is optional. For extended backup power, a separate (dedicated) UPS power source is recommended Once the main incoming power to the low voltage switchgear is available, the Sm@rtGear LVS components (including CPU and HMI) should begin communicating with the embedded Sm@rtGear devices. 3.6 System Health Check Ensure all Com15 Modules display green lights for both CubicleBUS and PROFIBUS when the breaker is present and in the test or connect position. Exercise (open/close) all breakers using the Breaker Control screen. Activate and deactivate DAS checking to ensure that the blue DAS light located above the breaker is illuminated when the DAS is activated. Figure 20 Breaker Controls Using the Breaker Controls screen, ensure that all the breakers times are in sync with the CPU/Master time using the Time Sync section of the screen. If the clocks are not in sync, press the sync time button. Use the LED status table below to read LED indications. LED Status Meaning PROFIBUS LED Off No voltage on the COM15 module PROFIBUS LED Red Bus error Communication not possible No Communication with class 1 master PROFIBUS LED Green PROFIBUS communication OK Cyclic data transmission with class 1 master CubicleBUS LED Off No CubicleBUS modules found CubicleBUS LED Red CubicleBUS error CubicleBUS LED Green Flashing CubicleBUS module found, but no ETU connected CubicleBUS LED Steady Green CubicleBUS module found and connection with the metering function/metering function Plus and/or trip unit Enclosure side Switchgear side Figure 17 OLM Connections RJ-45 cable runs from the network switch located in the low voltage switchgear auxiliary compartment to the network switch in the remote HMI enclosure. This cable can occupy the same conduit as the fiber optic cable, but not in the same conduit as the control power wire. Figure 18 Com Make sure no alarms are present on the HMI. Figure 21 Time Sync Figure 19 Active Alarms 10 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 11

9 4. System Screens 3.7 Customer Configuration 3.8 Quick Start Checklist 4.1 Elevation Siemens Logo Security Refer to Section 4.7. Users must be added and their security level access defined prior to logging onto the system Breaker Protective Parameters Refer to Section 6.2. WL breaker Protective Parameter settings must be entered. The Protective Parameter settings are usually determined by a short circuit and coordination study. An arc flash study should also be done to determine Arc Flash Maintenance Mode settings. Arc flash maintenance mode settings equate to the Parameter B breaker settings in the Sm@rtGear LVS. Review the following steps when commissioning Siemens Sm@rtGear Low Voltage Switchgear. þ Sm@rtGear LVS System Schematic Review (Section 3.1) þ Visual Inspection (Section 3.2) þ Equipment Installation (Section 3.3) þ Customer Connections (Section 3.4) þ Powering the Equipment (Section 3.5) þ System Health Check (Section 3.6) þ Customer Configuration (Section 3.7) The Elevation Screen is the home screen (Figure 22). It shows real time status of the breakers and bus in the Sm@rtGear LVS. Everything on the Elevation Screen is interactive and precisely represents the Sm@rtGear LVS in real time. The bus changes colors to indicate when it is inside or outside of a parameter. Bus colors change to red (Figure 23) when energized and healthy. Orange represents a bus if energized and unhealthy. Green indicates the bus is dead. Purple shows there is a communications failure with unknown status. The closed, open and DAS lights on the breakers also change color based on the states of the breaker and the DAS. When the breaker is closed the red light appears and changes to green when open. The same view of the Sm@rtGear LVS is represented in a One Line screen made up of ANSI standard symbols (See 4.2). The Elevation screen is a customized gear overview designed to match each individual Sm@rtGear LVS. All sections, compartments and devices are represented. Below are detailed descriptions of each item typically found on an elevation. The Siemens Logo in the upper left of the screen also acts as a button to log off and return to the Elevation screen Alarm Icon The Alarm Icon only appears when alarms are active. Touching the Alarm Icon reverts to the Alarm Screen (See 4.6) Information Bar The information bar is located in the upper right of Figure 24. It contains the system date/time, CPU status, System Mode setting, Retransfer Mode setting, Transition Mode settings and Current User. System date/time is synced off of the CPU date/time unless a GPS time sync system is used. Any changes to the CPU date/ time auto-update the date/time displayed on the HMI. If utilizing GPS time sync, reference for additional information. CPU status reflects its current status. System Mode setting displays which system mode is currently selected (i.e. auto or manual). Retransfer Mode setting displays which retransfer setting option is currently selected (i.e. auto or manual). Transition Mode setting displays which transition mode option is currently selected (i.e. open or closed). Note: Information bar is for display only. Reference 6.2 to change mode settings Gear Diagram Figure 22 Elevation Screen The largest part of the Elevation Screen is devoted to the Gear Diagram. Below is a list of important items and data found in most diagrams. Each meter has a picture corresponding to the physical location within the Sm@rtGear LVS. Touching the picture opens a detailed screen. Each breaker has an animated representation that corresponds to its location in the Sm@rtGear LVS. Touching the breaker opens a detailed pull up screen. Open/close status and change are displayed based on the state of the breaker. Connect/test/disconnect/not available positions correspond with the state of the breaker. If available, breakers can be blocked using the Bay Block feature. Reference for additional information. Each breaker has status lights that change based on the state (open/close) of the breaker. Figure 23 Elevation Screen 12 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 13

10 Each breaker has a designated nameplate. Nameplate wording can be customized. See for additional information. Each HRG unit has an icon corresponding to its physical location within the Sm@rtGear LVS. Touching the icon opens the detailed HRG unit screen. Each SPD (Surge Protective Device) has an icon corresponding to its location within the Sm@rtGear LVS. Touching the icon opens the SPD detail screen. Mimic Bus is routed throughout the Sm@rtGear LVS diagram (4.2.4). It represents the bus within the Sm@rtGear LVS. As noted above, the Mimic Bus changes color reflecting different bus states: Green bus is dead (de-energized) Red bus is healthy (energized) Orange bus unhealthy (under voltage or other condition present) Purple bus status unknown (loss of communication) Button Bar Transformer Symbol The symbol changes color based on state of the component. Color key: Green bus is dead (de-energized) Red bus is healthy (energized) Orange bus unhealthy (under voltage or other condition present) Purple bus status unknown (loss of communication) /59,81O/U,47 Symbol Pressing this icon advances to the autothrowover screen Breaker Icons Breaker icons show the breakers current states and nameplate information. Additional features include: 4.3 Maintenance Mode This screen allows the user to control the arc flash mainteance mode for one or multiple breakers using the virtual control switch (Figure 25). On the left side fo the screen, one or more breakers can be selected by clicking the check box beside the breaker. On the right side of the screen, the maintenance mode activation switch can be used to turn on or off the maintenance mode associated with all the breakers selected on the left side of the screen. 4.5 System Topology The System Topology screen (Figure 27) shows the system architecture of the Sm@rtGear LVS. The intelligent devices located in the low voltage switchgear lineup are networked to the CPU and HMI located in the remote control panel. The button bar is located at the bottom of the screen and accesses various screens. 4.2 One Line The One Line screen contains the same information as the Elevation Screen, but represented as ANSI standard symbols (Figure 24). It also provides all the conditions as the Help screen (4.3) and is accessible from the Button Bar. The ANSI standard symbols give a total system overview in a traditional format. Touching the breaker opens a detailed screen. Open/close status and change is displayed based on the state of the breaker. Connect/test/disconnect/not available positions correspond with the state of the breaker. Breakers can be blocked with a Bay Block feature. Reference (4.7.6). Each breaker has a nameplate. Wording can be customized. Reference (4.7.5) Mimic Bus Mimic Bus is routed throughout the One Line diagram and represents the bus within the Sm@rtGear LVS. The Mimic Bus changes colors according to the state of the switchgear. Green bus is dead (de-energized) Red bus is healthy (energized) Orange bus unhealthy (under voltage or other condition present) Purple bus status unknown (loss of communication) Figure 25 Maintenance Mode Group 4.4 Help The Help screen graphically shows all breaker positions (Figure 26) and serves as a guide to reading Elevation and One Line screen information. Touch the Help button on the Button Bar. The information on the Help screen includes Breaker Position, Breaker Status, DAS Status, Alarm Indication and Bus Health. Pictures and descriptions are standard. Figure 27 System Topology 4.6 User Administrator User Administrator sets priorities and adds/removes three user levels Administrator, Operator and Monitor (Figure 28). Each defines a user name and password. Incorrect passwords are flagged by a pop up box requiring acknowledgement. The system will not lockup after multiple incorrect password attempts. Lost passwords may be obtained by contacting Siemens Meter Icons Specific meter icons are located on the One Line screen. Touching the icon opens a detailed meter screen. Figure 24 One Line Button Bar Figure 28 User Administrator See description under Elevation Screen 4.1. Figure 26 Help 14 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 15

11 The User Administrator screen contains Administrator Functions that are locked out from all unapproved users. Functions include: Exit Runtime When the Exit Runtime button is touched, the graphic interface terminates, returning the system to the Windows desktop (Figure 29). The software continues in the background with current settings. After Runtime is terminated, a pop up is displayed on the Windows desktop RT Loader. To resume the graphic program, press the start button on the pop up. This remote electronic lockout function enhances mechanical lockout procedures and is an important extra step toward increasing personnel safety Bay Blocking/Load Shed Bay Blocking turns off any breaker in the system. The node is no longer part of the system cycle scan and no information from the node is available on the HMI (Figure 32). The system does not waste time scanning a breaker until Bay Blocking is unlocked. Note: If a Main, Tie or Generator breaker that is part of an Auto Throw Over scheme is placed into Bay Blocking, System Mode is forced into Manual Mode and Auto Operations will be allowed. This prevents unwanted system paralleling of the bus through a node with an unknown status. Figure 33 System Events View Alarm Log Figure 30 Set Breaker Restrictions Edit Name Plates The Alarm Log displays all Sm@rtGear LVS alarms based on a change in one or more monitored data points. For a list of these data points see section 7. Figure 29 Exit Runtime Breaker and Source Nameplates are edited on the User Administrator screen (Figure 31). Nameplate changes are reflected on the Elevation, One Line and Network Settings screens. Nameplate length is limited to eight characters Show Software Version Figure 32 Bay Blocking/Load Shed A pop up shows the software version loaded onto the system to help troubleshoot (especially for older applications) Clean Screen The clean screen option locks the commands for 20 seconds allowing for HMI cleaning Set Breaker Restrictions A pop up box command restricts Open, Close or DAS operations (Figure 30). If the Open box is checked for a specific breaker, the Open operation through the remote HMI is restricted and that breaker will no longer remotely open. If Close is selected, that breaker can no longer be closed through the remote HMI. Open and Close operations are still allowed when restricted from the breakers pushbuttons located on the breaker. If DAS is selected, the breaker will be locked in the current parameter and will not change from the remote interface. Figure 31 Edit Nameplates System Events The System Events screen pings the IP addresses of every meter, the WinAC RTX program software and the HRG unit (Figure 33). Pressing the Ping button for any device generates a prompt with instructions on viewing results. After the prompt box closes, press the View Results button for that device to view the ping data, and the date and time it took place. Results are saved to any location. The System Events screen also has a System Config command displaying the CPU s network settings. The Diagnostics button opens the unit s diagnostic information. A short description and a timestamp appears, but an alarm will not be activated. The System Diagnostics results may also be printed. Figure 34 View Alarm Log Open Task Manager Pressing Open Task Manager allows the system administrator to view all running programs. It is the quickest way to view the task bar and desktop screen on the HMI. 16 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 17

12 User View 4.7 Active Alarms Latching Alarms The User View allows the system administrator to edit, add or delete users as well as assign or modify access levels (Figure 35). There are three password levels: Administrator (Group 9), Operators (Group 1) and View Only (Group 2). To add a user touch the bottom blank section under the User column, then set a user name, password, group number and logoff time. After a predetermined amount of inactivity, the system automatically logs off. To manually log off, press the Siemens icon to return to the Elevation screen. The Alarm indication icon (upper right on screen, Figure 36) appears only during an active alarm. If there is an active alarm, click on the Alarm Icon to go to an alarm screen for detailed information about the event. Every screen on the system has the Alarm Icon capability. The screens also display clock, CPU status, CPU online status and System Modes settings. Alarms that stay active even if condition has been resolved until acknowledged/reset. External Trip 1) Fail to Close Fail to Trip Withdrawn-Test 1) Overcurrent Long Time Overcurrent Short Time Overcurrent Instantaneous Overcurrent Neutral Overcurrent Ground Extended Trip Fail to sync if applicable Figure Day Load Study Alarm Reset Button The Alarm Reset Button resets/acknowledges latched alarms. Pushing this button removes inactive alarms from the displayed list. Figure 36 Active Alarms Self-Reset Alarms 1 Only latching in Auto mode 2 If ordered Day Load Study Figure 35 User View outlined in yellow box Default Passwords: Administrator Level User: Siemens /Password: Siemens Operator Level User: Operator /Password: Operator Monitor Level User: View /Password: View Alarms that automatically reset when condition is resolved. Withdrawn disconnect Withdrawn N/A Not Write Enabled Ready to close Door open 2) Overload neutral Overload present Threshold exceeded Alarm present Load shedding alarm 2) Trip coil monitor alarm 2) Under voltage relay alarm 2) Bell alarm indicator 2) Prior to adding a load to an existing electrical system, a load study should be conducted to determine if the existing electrical system has the capacity to handle additional loads. NEC defines how the load study should be structured and executed. NEC recommends that the load study be conducted over a one-year period but allows an alternate 30-day period. The Sm@rtGear 30-day load study functionality allows the user to conduct a load study without having to rent additional monitoring equipment or have an outside agency conduct the study. The 30-day load study screen allows the user to select the breaker that will be the basis of the study and activate the study when desired. Users also have the ability to view, export or save the load study data. Two data trending windows are available to view the selected data subset. Figure Day Load Study Settings Figure Day Load Study Current Progress 18 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 19

13 5. WL Monitoring Screens 4.9 Documentation The Documentation screen includes all Siemens manuals and schematics for each Smart LVS (Figure 42). The documentation is accessed directly on the HMI or from a designated folder on the CPU. Typical default location of files is C:/Siemens_Files/PDF. Pressing any button on the Documentation screen opens a document. 5.1 Breaker Controls/Monitoring When a WL breaker is touched on the Elevation or One Line screens, a Breaker Controls/Monitoring screen appears, allowing access to Individual Time Sync, DAS Activation, Open/Close and all Breaker Monitor and Configure screens (Figures 43 and 44). On the breaker Controls/Monitoring screen the breaker clock and the CPU clock are shown. If for some reason the breaker and the CPU clocks become asynchronous, touching the Time Sync button will manually re-sync the breaker clock at any time. Admin users can also manually initiate a system time sync which updates all of the devices times to match the Sm@rtGear LVS CPU clock. This can be done by opening the User Administration screen and pressing the System Sync button located under System Functions. Figure Day Load Study Export Note: If the GPS option is supplied, it will constantly update the Sm@rtGear LVS CPU clock to ensure it stays accurate. See section DAS Activation Figure 42 Documentation Figure 43 Breaker Controls/Monitoring Dynamic Arc Flash Sentry (DAS) allows operators to switch back and forth from normal operating mode to maintenance mode. Maintenance mode has a reduced instantaneous trip setting in the WL breaker which decreases the amount of energy available for an arc flash, and reduces the danger zone. To activate or deactivate the DAS mode on any breaker, press the text On/Off on the DAS selector switch Open/Close Figure Day Load Study Export Save To open or close a breaker, press the Open or Close pushbuttons on the WL Breaker graphic. A double confirmation feature avoids unwanted breaker action. Status, Ready to Close and Spring Status are real time. Note: In the event of an Autothrowover, the breakers associated with the Autothrowover can be opened or closed only from the Breaker Controls screen in Manual Mode, in the correct sequence, depending on the type of Autothrowover. Figure 44 Breaker Controls/Monitoring, Close Confirmation Individual Time Sync Each WL breaker is equipped with an internal clock integrated into the breaker communication module.this clock provides a time stamp for all breaker events such as alarms, trips, warnings, and minimum/maximum measure values that are displayed on the breaker monitoring screens. Additionally, all breaker events (as described in Section 5.3) are logged and time stamped by the Sm@rtGear LVS CPU. This ensures that all breaker event logging has consistent and synchronized time stamping. Every time the Sm@rtGear LVS CPU boots up, a synchronization cycle updates and synchronizes the clock in every breaker with the Sm@rtGear LVS CPU clock. The breaker clock is automatically re-synchronized on every cycle (roughly 10-15ms) Breaker Monitor and Configure Pressing the Breaker Monitor and Configure button displays all optional screen buttons. To reset the view without these screen options, press the Reset View button. Optional screens include: Monitor Screens Breaker Metering, Harmonic Analysis, Event Log, Breaker Overview and Temperature History Configure Screens Communications and Metering, Extended Protective Functions and Threshold Alarms. 20 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 21

14 5.2 Breaker Metering The Breaker Metering screen shows all real time metering values for Voltage, Current, Power, Temperature and Energy (Figure 45). Figure 45 Breaker Metering Information displayed: Voltage A-N Voltage B-N Voltage C-N Voltage L-N Average Voltage A-B Voltage B-C Voltage C-A Voltage L-L Average Peak Factor in % Form Factor in % Phase Unbalance Voltage in % Total Harmonic Distortion of Voltage in % Breaker Temperature Cradle Temperature Current A Phase Current B Phase Current C Phase Current Neutral Current Ground Current Average Phase Unbalance Current in % Total Harmonic Distortion of Current in % kw A Phase kw B Phase kw C Phase kva A Phase kva B Phase kva C Phase kvar A Phase kvar B Phase kvar C Phase Power Factor A Phase Power Factor B Phase Power Factor C Phase kw Total kva Total kvar Total Power Factor Total Frequency Active Normal kwh Active Reverse kwh Reactive Normal kvarh Reactive Reverse kvarh 5.3 Event/Trip Log Figure 46 Event/Trip Log Event Log All events (except tripping operations) are entered into the Event Log with a timestamp and incoming (+) or outgoing ( ) indicators. Records include date and time of event, source of event, and a description of the event The WL Breaker event log can hold up to 10 events. Once the log reaches 10 records, if a new event arrives, the last event is removed from the log. Similar to First In, First Out (FIFO) memory, when a new event arrives, the last event is removed from the log. The logs are reset by touching the Reset Logs button and includes the Trip Logs and Event Logs. Event Logs include: Overload Alarm Overload Warning N-Conductor Load Shedding Alarm Load Pick Up Message Phase Unbalance Warning Trip Unit Fault Ground Fault Warning Over Temperature Warning Breaker Closed Breaker Open Threshold Warning TV Current TV Ground Fault TV Over Current N-Conductor TV Unbalance Current TV Long Term Mean Value for Current TV Under Voltage TV Unbalance Voltage TV Over Voltage TV Long Term Value for Active Power TV Long Term Value for Apparent Power TV Long Term Value for Reactive Power TV Reactive Power in Normal Direction TV Reactive Power in Reverse Direction TV Apparent Power TV Over Frequency TV Under Frequency TV Under Power Factor TV Over Power Factor TV THD Current TV THD Voltage TV Peak Factor TV Form Factor TV Active Power in Normal Direction TV Active Power in Reverse Direction Trip Log The Trip Log is similar to the Event Log. All ETU initiated trips will be retained in the log with a date/time stamp, source of trip code, and description of trip type. The WL Breaker trip log can retain up to 5 trips. Once full, the log will remove the oldest record as new records come in. The logs can be reset by pressing the Reset Logs button. This reset includes the Trip logs as well as the Event Logs. Trip Logs include: Long Time Instantaneous Short Time Ground Fault Extended Protective Function Overload N-Conductor ETU Self Protection Over Temperature Phase Unbalance Current Phase Unbalance Voltage Active Power Normal Direction Active Power Reverse Direction Over Voltage Under Voltage Under Frequency THD Current THD Voltage Change in Phase Rotation Over Frequency 5.4 Harmonic Analysis The Harmonic Analysis screen shows real time voltage and current harmonics, including harmonic oscillation percentage distribution up to the 29th harmonic (Figure 47). Figure 47 Harmonic Analysis 5.5 Breaker Overview The Breaker Overview screen provides breaker switching details, maintenance information and breaker detail information (Figure 48). Switching counters are reset by touching the Reset Counters button. Breaker Overview information includes: Trip Details Number of Switching Operations Under Load 1) Number of Switching Operations Caused by Trips 1) Number of Short Circuit Trips 1) Number of Overload Trips 1) Number of Ground Fault Trips 1) Time Until Presumed Overload Trip Runtime Meter 22 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 23

15 5.5.2 Breaker Details (See breaker manual for more detailed information) Switching Cycle Counter 2) Maintenance Information About the Main Contacts Switching Class Market Breaker was Built and Tested Rating Plug Size Frame Size Number of Poles Active Parameter Set PROFIBUS Status 1 Resettable Counter 2 Non Resettable Counter Figure 49 Min/Max of Current Min/Max of Temperature (Figure 51) Minimum Cradle Temperature Minimum Breaker Temperature Maximum Cradle Temperature Maximum Breaker Temperature 5.7 Diagnostics The Diagnostics screen displays comprehensive diagnostic messages from the WL breakers and other Sm@rtGear LVS intelligent devices, including shutdown data (Figure 53) Min/Max of Frequency, THD and Power (Figure 50) Figure 48 Breaker Overview 5.6 Min/Max The Sm@rtGear LVS has four Min/Max screens Current Values, Frequency and THD, Temperature and Voltage. Timestamps are included for all readings Min/Max of Current (Figure 49) Minimum Mean Value Power Factor Minimum Mean Value kva Minimum Mean Value kw Minimum Mean Value kvar Minimum Frequency Minimum THD Current Minimum THD Voltage Maximum Mean Value Power Factor Maximum Mean Value kva Maximum Mean Value kw Maximum Mean Value kvar Maximum Frequency Maximum THD Current Maximum THD Voltage Figure 51 Min/Max of Temperature Min/Max of Voltage (Figure 52) Minimum Voltage A-B Minimum Voltage B-C Minimum Voltage C-A Minimum Voltage A-N Minimum Voltage B-N Minimum Voltage C-N Maximum Voltage A-B Maximum Voltage B-C Maximum Voltage C-A Maximum Voltage A-N Maximum Voltage B-N Maximum Voltage C-N Figure 53 Diagnostics Diagnostic Message If a Diagnostic Message appears, the External Diagnostic message reads Diagnostic Message Present and the Diagnostic Message box displays a code. The code can be used for technical support to help define the issue. If no Diagnostic Message is present, the External Diagnostic message reads No Diagnostic Message Present Shutdown Data Shutdown data includes the current at the moment of a breaker shutdown, as well as the most loaded phase. This information is useful if a breaker opens due to an overcurrent CubicleBUS Minimum Current A Phase Minimum Current B Phase Minimum Current C Phase Minimum Current Neutral Minimum Current Ground Minimum Mean Current Total Minimum Long Mean Current Total Minimum Peak Factor Minimum Form Factor Maximum Current A Phase Maximum Current B Phase Maximum Current C Phase Maximum Current Neutral Maximum Current Ground Maximum Mean Current Total Maximum Long Mean Current Total Maximum Peak Factor Maximum Form Factor Figure 50 Min/Max of Frequency, THD and Power Figure 52 Min/Max of Voltage The CubicleBUS section shows all available modules for the WL breaker. The Installed WL breaker is selected by the factory according to modules ordered with the breaker. The Connected section detects devices connected to the CubicleBUS. If the Installed selection does not match the Connected section, a pop up box appears indicating that there is a CubicleBUS Installed vs. Connected mismatch. If a module is field installed, go to the Installed section and check the appropriate box to allow the Sm@ rtgear LVS to search for connectivity Current Metering Function Trip When the Extended Trip Parameters function is on, the Current Metering Function Trip section shows active, indicating that the pickup point of a parameter has been exceeded. 24 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 25

16 6. Breaker Configuration Current Threshold Alarms If any Threshold Alarms Parameters are on, the Current Threshold Alarms section will indicate Active, indicating that the pickup point of a parameter has been exceeded Trip Unit Alarms Trip unit alarms are integral to the trip unit. These alarms cannot be manually set. If a breaker triggers one of these alarms, the Alarm Icon appears with the alarm BKR XXX General Alarm displayed on the Alarm Screen. Intuitive WL breaker screens configure the WL breakers Communications and Metering, Protective Parameters, Extended Protective Functions and Threshold Alarms. When a screen is accessed, a Reading Parameters message pops up. This screen confirms the system is reading the most current values. New parameters are not allowed until the Reading Parameters text disappears. Once the Reading Parameters pop up text is gone, the Sm@rtGear LVS has the latest information on the selected parameters and only then accepts new values. Before new settings take effect, the Activate Settings button must be selected followed by a second confirmation Are You Sure You Want to Change Settings? Yes or Cancel button options appear on the second pop up. To change settings, press Yes and the Loading Parameters pop up text message appears followed by Reading Parameters. The settings are always reviewed to ensure the current values are displayed. If, at the second confirmation, it is no longer desired to activate the input settings, press the Cancel button. The Reading Parameters pop up appears to overwrite the input values back to the current settings. 6.1 Communications and Metering The Communications and Metering screen shows communication parameters as well as basic metering information (Figure 54). Figure 54 Communications and Metering Com 15 Address Address of the Com unit Read Only Primary Transformer Selectable for Delta or Wye Transformer type Read/Write Primary Voltage Primary voltage of the system bus Read/Write Secondary V.T. Voltage Secondary voltage of the voltage transformers. Selections available are 100VAC, 110VAC, and 120VAC Read/Write Incoming Direction Direction of the power flow through the breaker. Selectable for Top Feed or Bottom Feed Read/Write Phase Rotation Phase rotation of the switchgear supply. Selectable for A-B-C and A-C-B Read/Write Basic Type The amount of data space allocated to the breaker for cyclic data read. Basic Type 1, 2 and 3 supported Read Only Data Point of the Basic Type Identifies what information is set for the cyclic reads via a Data Point address. The definition of each data point is available in the SENTRON Protection devices 3WL/3VL circuit breakers with communication capability PROFIBUS System Manual (Siemens download center: Appendix 11.1) Read Only IP Address of the BDA When the BDA is connected to the breaker being accessed by the system, the set IP address will be automatically read and displayed Read/Write 26 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 27

17 6.2 Protective Parameters All breaker Protective Parameters are viewed and set from the Protective Parameters screen for both A and B (maintenance) parameters. When the settings are entered, a min/max pops up for any trip value (See Protective Parameters Calculation Guide ). This min/max is specific to each breaker based on frame size, switching class and rating plug to avoid entering out of range values. If an out of range value is entered, the input immediately reverts back to the previous settings. Input the parameters to several like breakers. Instead of reentering the same information to multiple breakers; the screen in Figure 52 allows for input to one breaker, and then uploads it to memory. When the Activate settings icon is selected within the Protective Parameters screen, the confirmation box in Figure 59 appears. This is identical for all four Monitor/Configure screens S-Trip (ISD) Isd can be delayed by the time tsd. The setting OFF for the trip units ETU745, ETU755 and ETU776 deactivates short-time-delay short-circuit protection Delay Time (tsd) If Zone Selective Interlocking (ZSI) is used, the setting for the time delay tsd is deactivated. If the breaker does not receive a blocking signal from a downstream circuit breaker it will trip after 50 milliseconds, regardless of the tsd setting. Read/Write I2t-Curve for S Figure 55 Protective Parameters without calculate hazard Figure 57 Protective Parameters with upload parameters When selecting the Print Setting icon within the Protective Parameters screen this window (Figure 53) appears, providing a screen shot of the setting. Figure 59 Parameter Confirmation Protective Parameters Information includes: L-Trip (IR) The maximum continuous current the breaker can carry without tripping; Read/Write Time Lag Class (TR) The maximum duration of an overload without tripping; Read/Write When switched ON, ETU 776 switches from a constant time delay to an I2t-characteristic. The time delay depends on the shortcircuit current, but with a constant I2tsd-value, providing better coordination with downstream fuses. Read/Write I-Trip (Ii) If the Ii current setting is exceeded, the breaker instantaneously trips. Read/Write N-Protection (IN) The ETU 776 protects the neutral conductor against overload. This requires a factory or field-installed current transformer for the neutral conductor. Read/Write I4t-Curve for L Ground Fault (Ig) When ON, the trip unit switches from the I2t to an I4t inversetime function for overload protection. This improves overload selectivity protection in combination with fuses. Read/Write If the trip unit is equipped with a ground-fault protection module, loads are protected against impermissibly high ground-fault currents. Figure 56 Protective Parameters with calculate hazard Figure 58 Print Settings Phase Loss Sensitivity If the phase failure protection is ON, and the normal current of the lowest loaded phase is 50% lower than the normal current of the highest loaded phase, the setting IR automatically reduces to 80%. If the values of the three phase currents differ by less than 50%, the setting IR applies again. Read/Write Thermal Memory Trip units ETU calculate thermal processes in downstream switchgear, even if the breaker is open and the electronic system has no external power supply. An effective protection against thermal overload is guaranteed for frequent closing and opening processes. Read/Write Delay Time (tg) The maximum duration of a ground fault without tripping; Read/Write I2t-Curve for G The ETU 776 ground-fault protection modules switch from a constant time delay to an I2t characteristic. An inverse-time tripping characteristic with a constant I2tg value provides better ground-fault protection in systems with several grading levels. The setting possibilities for the time delay remain unchanged. 28 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 29

18 Ground Fault Alarm (Ig2) 1) The tripping characteristic is an I2t characteristic. Some trip units can be switched over to an I4t characteristic Protection Function Limits Threshold Alarms The ground fault module has an additional set point for alarm only. The Ig2 signal triggers an alarm on the ETU without tripping the breaker Load Management The ETU745 - ETU776 trip units offer additional load monitoring. Two current values, Load Shed and Load Restore, as well as one time delay, can be set. If the load falls below the Load Restore setting, or if the load exceeds the Load Shed setting, a signal is generated via the CubicleBUS after the set time delay. These signals can connect or disconnect loads, thereby preventing incoming breaker overload tripping Arc Flash Calculator Parameters A and B have Calculate Arc Flash Hazard features. Each calculator has three operator inputs and five calculated values. Enter bolted fault potential, system voltage and system grounding values once. The Calculate Hazard button is pressed for the arc flash hazard information: Arcing Current, Incident Energy, Arcing Duration, Flash Protection Boundary and Risk/Hazard Level. *These calculations are based on UL 1584 IEEE Guide for Performing Arc Flash Hazard Calculations, and use the current breaker parameter settings Protective Parameters Calculation Guide Settings Calculations for Limits L-Trip IR IR = ( ) x Rating Plug Time Lag Class 1) TR = 2-30 sec when I4t-Curve for L is Off Time Lag Class 2) TR = 1-5 sec. when I4t-Curve for L is On S-Trip ISD ISD = 1.25 x Rating Plug 0.8 x Icw 3) Delay Time (tsd) 6) tsd = 0.02 sec.4) / sec.5) ; OFF Delay Time (tsd) 7) tsd = sec. I-Trip (Ii) Off = Icw Ii = 1.5 x Rating Plug x Icw N-Protection (IN) IN = ( ) x In; Off Ground Fault (Ig) Frame Size II Ig = 100 A 1200A Frame Size III Ig = 400 A 1200A Delay Time (tg) tg = sec. Ground Fault (Ig2) Frame Size II Ig = 100 A 1200A Frame Size III Ig = 400 A 1200A Delay Time (tg2) tg2 = sec 2) The tripping characteristic is an I4t characteristic 3) Icw Short Time Current Withstand Rating 4) The time delay 0.02 sec. is not a grading time. The motor protection function is activated in this position. Motor Protective Function is when the circuit breaker position tsd = 0.02 sec., a special protection function for electromotive drives is activated. It prevents the short-time-delay short-circuit tripping from being activated during the peak inrush current of electric motors. At the same time, a phase failure protection is activated and the time constant for the internally calculated reproduction of the temperature- rise and cooling process is switched over from switchgear protection to motor protection. 5) For settings tsd >0.4 sec., the maximum possible setting Isd is reduced automatically according to the frame size: Frame size II: 20 ka Frame size III: 30 ka 6) Shown with I2t-Curve for S = Off 7) Shown with I2t-Curve for S = On 6.3 Extended Protective Functions The Extended Protective Trip Setting screen sets range and delay parameters. If a parameter is exceeded for a set delay, the breaker trips and the Alarm Icon appears at the top right of the screen (Figure 60). Additional tripping criteria is set via Extended Protective Function PLUS. A parameterized delay time debounces briefly occurring events. The switch trips only if the set event persists longer than the delay time. There are 11 Extended Protective Functions that can trip the breaker. These trip functions are not part of the parameters used in the Autothrowover scheme. It is important to note that if the Sm@rtGear LVS has an Autothrowover scheme, breakers associated with the Autothrowover should not be set to trip through any of the Extended Protective Functions. If a breaker trips, the Alarm Icon appears and an alarm on the Alarm View screen indicates an Extended Protective Function. The Extended Protection Functions of the metering function PLUS monitor the following criteria and trigger the trip unit when limits are exceeded: Parameters Settings Delay Range Phase unbalance current 5 50 % 0 15 sec. THD current 5 50 % 5 15 sec. Phase unbalance voltage 5 50 % 0 15 sec. Under voltage V 0 15 sec. Overvoltage V 0 15 sec. THD voltage 3 50 % 5 15 sec. Direction of rotation of phase N/A N/A Active power in normal direction kw 0 15 sec. Active power in reverse direction kw 0 15 sec. Under frequency Hz 0 15 sec. Over frequency Hz 0 15 sec. Figure 60 Extended Protective Trip Settings 6.4 Threshold Alarms There are 24 Threshold Alarms that can trigger an alarm if a set point is exceeded. If one parameter set exceeds the set threshold, the Alarm Icon appears. The Alarm View screen indicates the breaker has an active threshold alarm. Threshold alarms do not trip the breaker when activated. Parameter Setting Range Delay Overcurrent A s Overcurrent ground fault A s Overcurrent N-conductor A s Phase unbalance current 5 50% s Long-term mean value of A s current THD current 5 50% s Undervoltage V s Overvoltage V s Phase unbalance voltage 3 50% s THD voltage 3 50% s Peak factor and form factor s Active power in normal kw s direction Active power in reverse kw s direction Power factor, capacitive s Power factor, inductive s Long-time mean value of kw s active power Apparent power kva s Reactive power in normal kvar s direction Reactive power in reverse kvar s direction Long-time mean value of kva s apparent power Long-time mean value of kvar s reactive power Under frequency Hz s Over frequency Hz s Figure 61 Threshold Alarms 30 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 31

19 7. Logging Data 6.5 Waveform Control The WL breaker Metering Function module features two independent waveform buffers (A and B). Each one has 8 channels, one each for currents Ia, Ib, Ic, IN, and Ig, and voltages Va, Vb, and Vc. Each channel is sensed with a frequency of 1,649 khz and the values are pushed through a shift register (length: 1 second). The process of pushing data through the shift register can be aborted by a configurable trigger event. Trigger events include trips, warnings and setpoint alarms so that the voltage waveform, for example, can be recorded in the event of undervoltage tripping. The trigger event can be set individually for each waveform buffer. The point at which the trigger event is to take place in the waveform buffer can also be defined. This setting can be used to set the ratio of the pre-event history to the post-event history. If the pre-trigger event history is to be analyzed, the position can be set to 80%. When the event occurs, 0.8 seconds of pre-event history and 0.2 seconds of post-event history are available in the waveform buffer, and an existing COM15/COM16 module adds a time stamp to the trigger event. Each waveform buffer stops independently, depending on the trigger event and can be activated again once the analysis is complete. The Waveform Control screen allows the user to do the following: (1) Set the trigger event for Buffer A and Buffer B waveform capture activation. (2) Set the pre-event and post-event history ratio. (3) Manually start and stop waveform recording. (4) Upload waveform capture file from breaker trip unit to HMI. (5) Select data subset (volts/current) format of HMI viewing. (6) View uploaded waveform capture file on HMI. Figure 62 Breaker Waveform Captured 7.1 Logging Log files are set up to record breaker status changes, Sm@rtGear LVS Alarms, Diagnostic Events, and PC System Alarms. Within each file, there are multiple data points recording upon change of status. Status Log: Breaker in connect Breaker in test Breaker in disconnect Breaker not available Breaker open Breaker closed Tripped status Logged for each breaker Alarms Log: Breaker Alarms Fail to close Fail to trip External trip Test position Disconnect position Not available Long time trip Short time trip Instantaneous trip Neutral trip Ground trip Extended protective functions trip Write protection enabled Profibus failure Not ready to close N conductor overload General overload present Threshold setpoint exceeded General alarm present Load shedding alarm Fail to sync (if applicable) Trip coil monitor alarm (if applicable) Bell alarm engaged Logged for each breaker Source Alarms Undervoltage Overvoltage Under frequency Over frequency Voltage Unbalance Dead Bus Generator not running (if applicable) Generator undervoltage (if applicable) Generator overvoltage (if applicable) Generator under frequency (if applicable) Generator over frequency (if applicable) Generator voltage unbalance (if applicable) Generator dead bus (if applicable) Logged for each source Optional Device Alarms Door Monitoring Alarm UPS Alarm TVSS Alarm HRG Alarm Smoke Detector Alarm Water Detector Alarm Diagnostic Events Log: Dependent upon devices installed System Events Log: System events from WinCC Runtime program Log files can retain up to 100,000 records. Once full, the recorded data is moved to an archive folder for storage and the Log File is cleared to continue recording. Archive files are automatically named and include the date and time the file was created. Warning: Users must exit Runtime Mode in order to access log files. Accessing a log file during Runtime Mode or altering the file could result in loss of data. Reference Exit Runtime for procedures. Log files use.csv formatting and can be located for copying at file directories: C:\Siemens_Files\Active_Logs\Status C:\Siemens_Files\Active_Logs\Alarms C:\Siemens_Files\Active_Logs\Diagnostic_Events C:\Siemens_Files\Active_Logs\System_Alarms Archived files use.csv formatting and are located at file directory: C:\Siemens_Files\Archive_Logs Note: All Log File records include a date and time stamp based on the Sm@rtGear LVS CPU date and time. If the GPS Time Server option is utilized, Sm@rtGear LVS CPU date and time settings are synced to the GPS Server via IRIG-B or SNTP every 2 milliseconds. 32 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 33

20 8. Optional Devices 8.1 Source Metering 8.3 Door Monitoring 8.6 HRG If the LVS is equipped with power meters, a Source Metering screen (Figure 63) is accessed from the Elevation screen by pressing the meter graphic or from the One Line screen by pressing the VM symbol. The Source Metering screen displays all real time metering. The Metering Screen also has a button link to trending views that contain logged and real time trends. If the equipped meter is a Siemens 9610, a button link to the built in web server can be customized for specific logging tasks. If the gear is equipped with Door Monitoring, the Alarm Icon appears and an alarm on the Alarm View screen will be present if a breaker door is open. 8.4 Trip Coil Monitoring If the gear is equipped with Trip Coil Monitoring, the Alarm Icon appears and an alarm on the Alarm View screen will be present if a breaker trip coil is unhealthy or has a phase loss. High Resistance Grounding Equipment coordinates the use of resistors and control devices, creating a high-resistance ground for a power system. Figure 65 and 66 show the Elevation Screen with for a HRG capable switchgear, and the corresponding HRG drill down screen. Figure 63 Source Metering Trending The trending data can be accessed from the Source Meter screen by pressing the Trending button located on the left hand side. Trending data is available for: Power Factor KVA KW KVAR AN *only on Y applications BN *only on Y applications CN *only on Y applications AB BC CA IA IB IC Figure 64 Trending A button bank on the right hand side of the screen allows the user to select desired trending information. Once one of the items is selected, two graphs will appear. The right side graph is for real time data. It shows a 30 second window that constantly updates from right to left. The left side graph shows logged item data. The log data graph has the ability to zoom in and out using standard magnifying glass icons located at the top of the graph. This changes the displayed trend by altering the time band displayed. The user also has the ability to move back and forth across the logged data to see graphed readings at different times in the past. This can be done by using the fast forward and rewind icons located at the top of the graph. Trending Logs record item data upon a change in value and can hold up to 500,000 records. Once the log is full, it will start to overwrite data in the FIFO format of First In, First Out ensuring extensive historical data is available for trending display. Warning: Users must exit Runtime Mode in order to access log files. Accessing a log file during Runtime Mode or altering the file could result in loss of data. Reference Exit Runtime for procedures. Trending Log files use.csv formatting and can be located for copying at file directory: C:\Siemens_Files\Active_Logs\Power Note: All Log File records include a date and time stamp based on the Sm@rtGear LVS CPU date and time. If the GPS Time Server option is utilized, Sm@rtGear LVS CPU date and time settings are synced to the GPS Server via IRIG-B or SNTP every 2 milliseconds 8.5 GPS Time Sync Sm@rtGear LVS is capable of meeting the most stringent time stamping requirements by utilizing time synchronization in accordance with IRIG-B or NTP standards. Additional cards and software can be added to allow the Sm@rtGear LVS CPU to synch with an IRIG-B signal or NTP signal from current site GPS systems. Once the Sm@rtGear LVS CPU is configured, all Logging and Trending time stamping will be IRIG-B or NTP compliant. This allows for detailed and accurate sequence of events analysis. Time synchronization of downstream devices is also adjusted in the Sm@rtGear LVS CPU to auto sync every 10ms. The Sm@rtGear LVS CPU is also intelligent in that it will analyze how far off its time is from the received signal and start adjusting automatically. This allows for continued accuracy even if the GPS or IRIG-B signal is lost. In the event a GPS Time Sync is required but not available on site, Sm@rtGear LVS can provide the full package. A Spectracom SecureSync Synchronization System can be provided to integrate with the Sm@rtGear LV CPU via IRIG-B or NTP. A few features of the Securesync are: Multi-GNSS available (GPS/GLONASS) SAASM available in GB-GRAM and MRU receivers Internal precision time-keeping via TCXO, OCXO or Rb oscillator Multiple, prioritized input references Securesync can accept up to 6 additional cards provided a wide array of input/output options and through the use of prioritization settings can be set up for redundant use adding additional layers of protection to the synchronization system. Figure 65 Elevation - HRG Figure 66 HRG 8.2 SPD If the gear is equipped with a SPD, a detailed view of the SPD is accessed from the Elevation or One Line screens by pressing the graphic. The detail view shows the status of the SPD as either OK or General Alarm Present. 34 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 35

21 The HRG unit ships from the factory configured for use at the system voltage with the fault current tap set at 5 amps and the pulsing tap set at 10 amps. If the charging current of the system is known, this may be changed accordingly; otherwise, the system charging current can be measured via the user interface once the system is operational. The default alarm settings are as follows (unless otherwise specified): Default Alarm Settings Overvoltage Level Undervoltage Level Overcurrent Level Undercurrent Level Pulse Rate Ground Fault Time Delay Alarm Resend Time Delay 100 V 0 V 5 A 0 A 1 Second 10 Seconds 20 Minutes Sensing Resistor Parameters Fault Voltage 30 V Non-Fault Voltage 3 V The details of the information displayed from the HRG are as follows: Active Alarms Voltage Alarm Current Alarm Phase Loss Voltage Alarm Voltage Above Max Alarm Voltage Below Min Alarm Current Above Max Alarm Current Below Min Alarm Phase A Faulted Phase B Faulted Phase C Faulted NGR Failed Phase A Fault Monitor Phase B Fault Monitor Phase C Fault Monitor Communications Parameters IP Address Subnet Gateway RS-485 ID RS-485 Time Out RS-485 Retries Baud Rate System Settings System Rated Voltage System Rated Current Sensing Resistor Voltage Alarm Setting Normal Sensing Resistor Voltage Alarm Setting NGR Maximum Voltage NGR Minimum Voltage NGR Maximum Current NGR Minimum Current Scaled NGR Voltage Scaled NGR Current Scaled Test Resistor Current Scaled Sensing Resistor Voltage System Charging Current Controls Activate Pulser Press to turn the pulser on or off Set Pulse Rate Ground Fault Time Delay Alarm Resend Timer Customer Password - When the Change Password button is pressed a pop up will appear with the new password and confirmation. Input the desired password (must be a value of ) and the press the Apply button. If the Password change was successful a Password Change Successful message will appear. Note: The default password is System Events Number of Events Currently Stored in Log displays the number of events that can be displayed to the user. The events are stored in rows from 1 to 200. Operator Input Select Event No. To Read The operator inputs what event (row) that is desired to be displayed. If the most current event is to be read, the operator would input a 1 in this field and then press the Read Selected Event button. The event and time stamp would be displayed in the Event Selected field. Read Selected Event History stores the last 3 event rows that have been selected. The history is recorded in FIFO (First in First out) memory. The Events that can be read are as follow: - Ground Faults Cleared Phase-to-ground faults no longer detected. Any Undetected faults may still be on system. - System Charging Current System charging current has been calculated. View Parameters screen for calculation result. - Test Resistor Connected Test Resistor has been connected. - Voltage Within Limits Voltage across the NGR has returned to normal. - Current Within Limits Current through the NGR has returned to normal. - Pulse Start Pulsing of faulted system through NGR has started. - Pulse Stop Pulsing of faulted system through NGR has stopped. - Password Changed Password has been changed. - Password Disabled Password disabled. Protection removed from system. Unauthorized user access allowed. - Password Enabled Password enabled. Protection returned to system. Unauthorized user access not allowed. - Lamp Event Front Panel Lamps and Horn tested. - LVM Enabled Loss of Voltage Monitoring System has been Enabled. - LVM Disabled Loss of Voltage Monitoring System has been Disabled. System Alarms Number of Alarms Currently Stored in Log displays the number of alarms that can be displayed to the user. The alarms are stored in rows from 1 to 200. Operator Input Select Alarm No. To Read The operator inputs what alarm (row) that is desired to be displayed. If the most current alarm is to be read, the operator would input a 1 in this field and then press the Read Selected Alarm button. The alarm and time stamp would be displayed in the Alarm Selected field. Read Selected Alarm History stores the last 3 event rows that have been selected. The history is recorded in FIFO (First in First out) memory. The Alarms that can be read are as follow: - Voltage Above Limit Warning!! Voltage across NGR has exceeded maximum alarm value. - Voltage Below Limit Warning!! Voltage across NGR is below the minimum alarm value. - Current Above Limit Warning!! Current through NGR has exceeded maximum alarm value. - Current Below Limit Warning!! Current through NGR is below the minimum alarm value. - Phase A Fault Warning!! A single-line-to-ground fault has occurred on Phase A. - Phase B Fault Warning!! A single-line-to-ground fault has occurred on Phase B. - Phase C Fault Warning!! A single-line-to-ground fault has occurred on Phase C. - NGR Failure Warning!! An open circuit has occurred in the NGR. An ungrounded system condition may result. 8.7 Temperature Monitoring The Temperature Monitoring screen allows the user to remotely monitor the temperature of optional embedded temperature sensors. Typical monitoring applications are bus bar bolted connections and cable/lug connections. Figure 67 Bright Spot Temperature Monitoring 36 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 37

22 9. Autothrowover 9.1 Autothrowover Definition Autothrowover is an intelligent protection scheme used to ensure power supplied to a load or loads meets predefined power quality metrics. When a primary power source does not meet these standards, the system automatically switches to an alternate source. Autothrowover functionality is inherent in the standard features of Siemens Sm@rtGear Low Voltage Switchgear. By adjusting autothrowover set points and controls the Sm@rtGear gear can autonomously detect when a utility has failed, or is at risk of failure, and transition to an alternative power source if available. These intelligent capabilities add an additional level of protection for a given application, and minimize power interruption. Siemens Sm@rtGear Low Voltage Switchgear is capable of performing all functions required for the autothrowover process. No additional system components, such as automatic transfer switches, are required as all switching functions are performed using Siemens WL breakers. This reduces overall system cost, complexity, and probability of failure. Optional accessories (external relays) must be added to Siemens Sm@rtGear Low Voltage Switchgear if closed transition retransfer is required. 9.2 Configurations Standard power source configurations for an autothrowover system include the following two cases: Case I: Primary and secondary utilities, typically referred to as a Main-Tie-Main configuration. The normal operating state is when both main breakers are closed and the tie is open. Case II: Primary utility and secondary generator, typically referred to as a Main-Generator configuration. The normal operating state is when the utility breaker is closed and the emergency generator breaker is open. Other non-standard configurations are possible. Operation of these non-standard configurations is a function of the physical system, and is not described in this document. An example of a non-standard configuration would be main-generator with multiple generators run in parallel. 9.3 System Control Standard Control Features Siemens switchgear autothrowover logic is controlled by a Siemens IPC427D industrial CPU running Step 7 PLC software. This controller contains all software required to monitor, configure, and control embedded intelligent and structural monitoring devices. The autothrowover controls and settings may be accessed using either the Elevation or One Line displays via the HMI. From the Elevation screen select the autothrowover icon located on the design-specific cubicle. From the One Line display select the 27/59,81O/U,47 icon Optional Control Features For applications requiring additional redundancy, the Siemens S7-400 hot swappable PLC is available as an additional feature. This PLC allows the user to insert and remove process controller signal modules while the system is live, resulting in increased system flexibility while minimizing downtime. are supplying power to the load(s). In order for the sources to be paralleled, phase (both angle and rotation), frequency, and voltage must be synchronized. Prolonged paralleling of sources can create a hazardous condition for the equipment and operator, thus the paralleling time is limited to 300 milliseconds. 9.4 Autothrowover Components and Features Standard Components and Features Standard features and components include: Siemens IPC427D Microbox CPU Programming to support required sequence of operation Electrically operated breakers containing shunt trip, remote closing coil, and spring charge motor Modbus or Profibus communication modules UPS to supply backup control power Electrical interlock Siemens ITC 2200 HMI with 22 touch screen Optional Components and Features Optional features and components include: Hot swappable S7-400 PLC for additional system redundancy Sync relay check 25M allowing for closed transfer External relays (27/59,81O/U,47) - If the integral WL breaker relaying capability is not utilized Redundant hard switches (in addition to standard HMI soft switches) for breaker control Redundant indicating lights - Source available (Preferred/Alternate) - Control power available (Preferred/Alternate) - Breaker condition (Open/Closed) Redundant selector switches - Manual/Auto mode - Breaker operation in manual mode 9.5 Setpoints/Controls Screen The setpoints screen allows the operator to define the setpoints for the system. The first column is the setpoint and the second countdown column is visible only when the timer is active. The second column is purely for countdown purposes. Figure 67 Main-Tie-Main (left) and Main-Generator (right) One Line Diagrams Figure 68 SIMATIC S7-400 Process Controller The addition of the non-standard sync check relay (25M) allows the switchgear system the ability to perform closed transfers. A closed transfer occurs when both primary and secondary sources Any of the setpoints can be viewed or changed; they are password protected to prevent tampering. Each setpoint has preprogrammed high and low limits to ensure that a chosen value is within an acceptable range. 38 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 39

23 Figure 68 Autothrowover Setpoints/Controls Screen for Main-Tie-Main with Optional Closed Transition The setpoints and timers that are operator configurable are shown below: Timer Setpoints Setpoint Main-Tie-Main Main-Generator Default Minimum Maximum Default Minimum Maximum TDOX std TDFC std TDFT std TDFS opt TDOL opt TDNE-M1 std TDEN-M1 std TDNE-M2 std TDEN-M2 std TDVF std TDVA std TDCD std TDVD-S2 std TDOX Open transition timer TDFC Time delay before breaker fail to close alarm TDFT Time delay before breaker fail to trip alarm TDFS Time delay for fail to synchronize alarm TDOL Maximum safety time limit for paralleling sources in Automatic mode TDNE-M1 Time delay on transfer from primary to secondary source in order to override momentary outages TDEN-M1 Retransfer time delay from secondary to primary source TDNE-M2 Time delay on transfer from secondary to primary source in order to override momentary outages TDEN-M2 Retransfer time delay from primary to secondary source TDVF Time delay on transfer from primary in order to override any momentary outages TDVA Time delay from primary. Primary voltage normalized TDCD Time delay to keep engine running after start signal is removed TDVF-S2 Time delay for generator to come up to voltage and frequency Selector Switches In addition to the operator specified timers, there are four selector switches on the autothrowover Setpoints/Control screen. The function of each selector switch is described below: System Mode Auto or Manual Dictates whether protective relays or an operator controls the transition from primary to secondary sources. Auto mode requires no operator interaction with the system once timers and protective relay settings are defined. All source transfers occur automatically based on these predefined values. Manual mode gives the operator complete control of the system and disables all automatic functions. Retransfer Mode Auto or Manual Dictates whether protective relays or an operator controls the transition from secondary to primary sources. Auto mode requires no operator interaction with the system once timers and protective relay settings are defined. All source transfers occur automatically based on these predefined values. Manual mode gives the operator complete control of the system and disables all automatic functions. Transition Mode Open or Closed Dictates the mode of transition between sources. Note that for closed transition the optional protective relays must be installed. This selector switch will only function in systems that have the capability for closed transition; otherwise it will be locked in the open state. 10 Switch Manual Only Allows the user to manually switch from one source to another when the System Mode is in the manual mode Protective Relays The protective relays in Siemens Sm@rtGear low voltage switchgear are the features that make this system intelligent. The relays measure various source parameters and dictate when the autothrowover sequence is initiated. The operator must first define the system voltage and frequency within the protective relays section on the Setpoints/Control screen. Once this is done the source settings will auto populate with settings based upon inputs. It should be noted that Siemens advises the specific voltage and frequency be measured onsite, and the preset factory parameters be modified to match the measured values in the field. This will aid in preventing nuisance trips and transfers. Relay 27/59 is responsible for undervoltage/overvoltage sensing. Relay 81O/U is responsible for underfrequency/overfrequency sensing. Relay 47 is responsible for phase unbalance sensing. Optional relay 25M is required for closed transition transfers, and verifies source synchronization Load Test The load test section of the Setpoints/Control screen allows the operator to conduct a transition from primary to secondary sources. The full sequence for the load test function is described below: Push the load test pushbutton on the HMI screen. The system will initiate a generator start request, if applicable. Once the secondary source becomes available (at 90% rated voltage and frequency as indicated by the emergency source available light) the normal main breaker will open and after timer TDOX (3 seconds) expires the emergency breaker will close. 9.6 Sequence of Operation Automatic Mode Loss of Primary When primary source metrics fall outside the threshold settings of the source monitoring relays, the system will by default delay transition to the secondary source by 5 seconds (TDNE-M1 or TDVF) to override any momentary source outages. This time delay may be adjusted to best match the system applications. If the switchgear is in the main-tie-main configuration, the five second delay initiates the opening of the primary breaker. After the default open transition time delay of 3 seconds (TDOX) the tie breaker will close. If the switchgear is in the main-generator configuration, the 5 second delay (TDVF) initiates the generator start request. The generator must achieve 90% the rated voltage and frequency before transition to this secondary source occurs. The time delay for the generator to reach voltage and frequency is set to a default 10 seconds (TDVF-S2) Return to Primary Standard Open Transition Once the primary source has returned to an acceptable operating state, the system will by default monitor the source for 5 minutes (TDEN-M1 or TDVA) to ensure stability. After time has expired the system will initiate an open transition retransfer. Regardless of configuration, this open transfer takes by default 3 seconds (TDOX) to occur. This is the delay between one breaker opening and another closing. If the switchgear is in the main-generator configuration, the generator start request will be removed and the cool down timer will begin once the transition has occurred. By default the generator continues to run for 5 minutes (TDCD) in a cool down state after the transition has occurred. 40 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 41

24 Return to Primary Optional Closed Transition Optional Closed Transition Peak Shaving Optional Main-Tie-Main or Main-Main Configuration Upon return of the normal source, the system will by default monitor the source for 5 minutes (TDEN-M1 or TDVA) to ensure stability. After time has expired the system will initiate a closed transition retransfer if the phase, voltage, and frequency of the primary and secondary sources are synchronized. The primary breaker will close and after a default time of 100 milliseconds (TDOL) either the tie breaker or the generator breaker will open completing the closed transition. Regardless of configuration the maximum amount of time two sources may be run in parallel is 300 milliseconds (TDOL). For the main-generator configuration, by default the generator continues to run for 5 (TDCD) minutes in a cool down state after the transition has occurred Manual Mode Manual operations via the breaker control switches disable all automatic operations. The transfer of sources is open (standard) or closed transition and is enabled when the selector switch is in the manual mode position. After desired transfers are complete, turn the selector switch back to auto mode to return to PLC-based automatic breaker control. In the case of an autothrowover event, the associated breakers may only be opened or closed from the Breaker Controls screen in Manual Mode Standard Open Transition Operation Steps: 1) Turn selector switch to manual load. The blue manual mode light will illuminate. 2) Verify that the secondary source is available by noting whether the source availability light is illuminated. This may also be determined using the HMI. 3) Upon verification use the breaker control switches to first open the primary source breaker and then close the tie breaker (main-tie-main configuration) or secondary source breaker (main-generator configuration). 4) To retransfer to the primary source open the tie breaker (maintie-main configuration) or the secondary source breaker (maingenerator configuration) and close the primary breaker. Operation Steps: 1) Turn selector switch to manual load. The blue manual mode light will illuminate. 2) Verify that the secondary source is available by noting whether the source availability light is illuminated. This may also be determined using the HMI. 3) Verify that the synchronization of sources light (green) is on. 4) Upon verification close the tie breaker (main-tie-main configuration) or the secondary source breaker (maingenerator configuration). The two sources are now running in parallel. Prolonged paralleling of sources can create a hazardous condition for the equipment and operator. It is recommended that paralleling be removed immediately after the transfer. 5) Open the primary source breaker to complete the transfer to the secondary power source. 9.7 Optional System Capabilities Load Shedding and Load Prioritization Load shedding consists of the required controls to prioritize downstream loads, supplying power to these loads based upon source availability. This added functionality allows the user to pick and choose which downstream loads are critical to the specific application. Load shedding requirements must be specified during the order process for the system to be constructed with the required control scheme. Figure 69 Load Shed Peak shaving, in the main-generator configuration, is the process of switching power sources from the utility to the generator during peak usage times, avoiding elevated utility costs. Peak shaving is most effective if the following conditions are met: 1) System is in the main-generator configuration and has closed transition capability. 2) Generator is adequately sized so as to provide power for all normal facility operations. If these conditions are met the end user may increase power source flexibility, with the potential for significant utility cost savings. 9.8 Test Sequences Main-Tie-Main or Main-Main Configuration Standard Main-Tie-Main or Main-Main Configuration Start Transfer Test Source 1 Open Transition Press the Start Source 1 Test button on the control screen of HMI. The system will initiate an open transition transfer, the normal main breaker 1 will open, and after timer TDOX (3 sec) expires the tie breaker will close. Stop Transfer Test Source 1 Open Transition Mode (Retransfer from Normal 2 to split bus) Press the Stop Source 1 Test button on the control screen of HMI. The system will initiate an open transition transfer, the Tie breaker will open and after timer TDOX (3 sec) expires the normal main breaker 1 will close. Start Transfer Test Source 2 Open Transition Mode Press the Start Source 2 Test button on the control screen of HMI. The system will initiate an open transition transfer, the normal main breaker 2 will open and after timer TDOX (3 sec) expires the tie breaker will close. Stop Transfer Test Source 2 Open Transition Mode (Retransfer from Normal 1 to split bus) Press the Stop Source 2 Test button on the control screen of HMI. The system will initiate an open transition transfer, the Tie breaker will open and after timer TDOX (3sec) expires the normal main breaker 2 will close. Start Transfer Test Source 1 Closed Transition Mode Press the Start Source 1 Test button on the control screen of HMI. The system will initiate a closed transition retransfer, (if, the phase, voltage and frequency of sources are in synchronization). The tie breakers will close after timer TDOL (100 milliseconds) expires the main breaker 1 will open. Stop Transfer Test Source 1 Closed Transition Mode (Retransfer from Normal 2 to split bus) Press the Stop Source 1 Test button on the control screen of HMI. The system will initiate a closed transition retransfer, (if, the phase, voltage and frequency of sources are in synchronization). The normal main breaker 1 will close and after timer TDOL (100 milliseconds) expires the tie breaker will open. Start Transfer Test Source 2 Closed Transition Mode Press the Start Source 2 Test button on the control screen of HMI. The system will initiate a closed transition retransfer, (if, the phase, voltage and frequency of sources are in synchronization). The tie breakers will close and after timer TDOL (100 milliseconds) expires the main breaker 2 will open. Stop Transfer Test Source 2 Closed Transition Mode (Retransfer from Normal 2 to split bus) Press the Stop Source 2 Test button on the control screen of HMI. The system will initiate a closed transition retransfer, (if, the phase, voltage and frequency of sources are in synchronization). The normal main breaker 2 will close and after timer TDOL (100 milliseconds) expires the tie breaker will open Main-Generator Configuration Standard Main-Generator Configuration No Load Test Push the no load test pushbutton on the HMI screen. The system will initiate a generator start request. To stop test, push the no load test pushbutton on HMI screen. Load Test Open Transition Mode Push the load test pushbutton on the HMI screen. The system will initiate a generator start request. Once the emergency system becomes available (at 90% rated voltage and frequency as indicated by the emergency source available light) the normal main breaker will open and after timer TDOX (3 seconds) expires the emergency breaker will close. 42 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 43

25 10. Upper Level System Tie-In Return from Load Test Open Transition Mode (Retransfer from Emergency to Normal) Push the load test off pushbutton on the HMI screen. The system will initiate an open transition retransfer, the emergency main breaker will open and after timer TDOX (3 seconds) expires the normal main breaker will close. Once retransfer has occurred, the generator start request will be removed and the cool down timer will begin timing (5 minutes). Load Test (Exerciser On) Open Transition Mode Per the time and day set points on the HMI touch screen. The Exerciser will turn on and be on for the duration set point on the HMI screen. The system will initiate a generator start request. Once the emergency system becomes available (at 90% rated voltage and frequency as indicated by the emergency source available light) the normal main breaker will open and after timer TDOX (3 seconds) expires the emergency breaker will close. No Load Test (Exerciser On) Per the time and day set points on the HMI touch screen. The Exerciser will turn on and be on for the duration set point on the HMI screen. A start signal will be sent to the generator. Return from No Load Test (Exerciser Off) Per the time and day set points on the HMI touch screen. The Exerciser will turn off after the duration time set point has expired. The generator start request will be removed and cool down timer will begin timing (5 minutes). Retransfer Inhibit (Maintain Emergency) To inhibit retransfer, push the inhibit pushbutton on the control screen of HMI. The home and control screen will indicate retransfer is inhibited. The system will remain on emergency system until the bypass pushbutton on the HMI is pressed or until retransfer mode is put back into auto by pressing auto pushbutton on the control screen of the HMI Optional Main-Generator Configuration Load Test Closed Transition Mode Push the load test pushbutton on the HMI screen. The system will initiate a closed transition retransfer, (if, the phase, voltage and frequency at generator are in synchronization with that of utility) the emergency breaker will close after timer TDOL (100 milliseconds) expires and the normal main breaker will open. Return from Load Test Closed Transition Mode (Retransfer from Emergency to Normal). Push the load test off pushbutton on the HMI screen. The system will initiate a closed transition retransfer, (if, the phase, voltage and frequency at generator are in synchronization with that of utility) the normal main breaker will close after timer TDOL (100 milliseconds) expires and the emergency breaker will open. Once retransfer has occurred, the generator start request will be removed and cool down timer will begin timing (5 minutes). Load Test (Exerciser On) Closed Transition Mode Per the time and day set points on the HMI touch screen. The Exerciser will turn on and be on for the duration set point on the HMI screen. The system will initiate a closed transition retransfer, (if, the phase, voltage and frequency at generator are in synchronization with that of utility) the emergency breaker will close and after timer TDOL (100 milliseconds) expires the normal main breaker will open. Return from Load Test Closed Transition Mode (Exerciser Off) Per the time and day set points on the HMI touch screen. The Exerciser will turn off after the duration time set point has expired. The system will initiate a closed transition retransfer, (if, the phase, voltage and frequency at generator are in synchronization with that of utility) the normal main breaker will close after timer TDOL (100 milliseconds) expires and the emergency breaker will open. Once retransfer has occurred, the generator start request will be removed and cool down timer will begin timing (5 minutes). Return from Load Test Open Transition Mode (Retransfer from Emergency to Normal) Per the time and day set points on the HMI touch screen. The Exerciser will turn off after the duration time set point has expired. The system will initiate an open transition retransfer, the emergency main breaker will open and after timer TDOX (3 seconds) expires the normal main breaker will close. Once retransfer has occurred, the generator start request will be removed and cool down timer will begin timing (5 minutes). Option 1: Siemens PC tie in to control room PC via http web server. This option makes HMI completely visible to upstream PC in control room. Reference Smart@ccess manual, located on the documentation screen, for more information. 11. Troubleshooting Password Lockout: If a password to access the protected screens is entered incorrectly three times, the protected screens will be locked out. If this happens, power must be cycled to the HMI to unlock the screens. Data on the HMI not updating: If the HMI data is not current with the actual status of the Sm@ rtgear LVS, look in the upper right hand corner of the HMI. If the CPU and the HMI are connected, it shows CPU: Online. This means all data on the HMI should be current. If it shows CPU: Offline then check the Ethernet cable that runs from the HMI to the CPU. Ensure the cable is connected and not damaged. Also make sure the CPU is in Run Mode indicated by a green light on the CPU next to the word Run. If the CPU is on Stop Mode, indicated by an orange light on the CPU next to the word Stop, place the CPU in Run Mode using the toggle switch on the CPU. Breaker time incorrect: When the CPU is placed into Run Mode a system Time Sync operation is performed. After this operation, if a breaker communications module lost power, then the breaker clock would reset. To re-sync, touch the breaker from the One Line or Elevation and press the Sync Time button. PROFIBUS Failure Alarm: If a PROFIBUS Failure alarm is displayed on the Alarm Screen for a PROFIBUS device, check the PROFIBUS connection. If it is a WL Breaker, look at the Com 15 module on the breaker to see if both the lights are green. If both lights are green, then the module is communicating normally. If the top light is red and the bottom light is green, then the Com 15 is not sending data to the CPU. If the PROFIBUS connection is good, check the on/off resistor switch on the PROFIBUS connector. All resistor switches should be turned off. If the top light is green but the bottom light is red and the breaker is connected in the cell, then there is an internal communications error. Option 2: The Sm@rtGear system is equipped with remote mode. This is an upper level system equipped with a Siemens driver that will serve to control downstream devices. Fail to Close/Trip Alarms: If an attempt to close or trip a breaker fails, a Fail to Close/ Trip alarm will be displayed on the Alarm Screen. This alarm indicates there is hardware or wiring issue/logic blocking the operation. This alarm takes place if the signal is sent out of the CPU. Check the breaker Close/Trip relay located to the right of the breaker. Make sure the relay is installed, is the correct coil voltage (24VDC) and that the relay coil picks up when the Close/Trip button is pressed. It is also important to note that the Fail to Close/Trip alarms are latching alarms. Once an alarm is present, the system will not attempt the operation again until the Reset button is pressed on the Alarm Screen. Software Updates: Software updates are sent via Pack and Go . All that is required is a windows laptop and an Ethernet port. 44 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 45

26 12. Service & Support 13. Appendix Support, service, parts and repairs are available seven days a week, 24 hours a day, 365 days a year. Call Siemens Industry Customer Care Center (ICCC) at How to Access the Siemens Download Center Figure 71 Access Siemens Download Center 46 Sm@rtGear Low Voltage Switchgear User Manual Sm@rtGear Low Voltage Switchgear User Manual 47