Siemens Fusesaver and Remote Control Unit 3AD8

Transcription

1 Catalog HG Edition 2017 Siemens Fusesaver and Remote Control Unit 3AD8 Medium-Voltage Equipment siemens.com/fusesaver

2 2 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG R-HG11-FR-001.tif

3 Contents Siemens Fusesaver and Remote Control Unit 3AD8 Medium-Voltage Equipment Catalog HG Replacing: Catalog HG siemens.com/fusesaver Contents Page Rural network challenges 4 5 Fusesaver 6 The Fusesaver system 8 Communications module 11 Siemens Connect software 12 Protection functions and modes 14 Standards and ambient conditions 16 Product range overview and scope of delivery 17 Remote Control Unit 19 RCU principle 20 The RCU system 21 Communications interface and protocol 24 RCU Connect and RCU Probe software 24 Standards, ambient conditions, scope of delivery Product Selection 27 Ordering data and configuration example 28 Selection of Fusesaver 29 Selection of Remote Control Unit 30 Selection of additional equipment 31 Selection of accessories and spare parts 32 2 Technical Data 33 Electrical data, dimensions and weights 34 Dimension drawings 35 3 The products and systems described in this catalog are manufactured and sold according to a certified management system (acc. to ISO 9001, ISO and BS OHSAS 18001). Annex 37 Benefits 38 Inquiry form 39 Configuration aid Foldout page 4 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

4 Rural network challenges In most rural network configurations, the feeder is protected by a circuit-breaker or recloser. Lateral lines (also referred to as T-offs or spur lines) are usually protected by fuses. As a fuse is unable to distinguish between temporary and permanent faults, it blows on ALL faults, causing downstream customers to lose power and requiring a line crew to replace the fuse. In rural networks it may take hours for the line crew to drive to site, patrol the line and reconnect supply. This leads to unnecessary high operating costs for the utility. Furthermore, downstream users are left without power for extended periods of time potentially resulting in financial penalties to the utility. Since typically 80 percent of a rural network s faults are transient, 80 percent of its fuses are blown unnecessarily. Some utilities are moving towards de-fusing their rural networks to avoid this problem and to address fire start risks also associated with fuses. They then depend upon the upstream recloser to clear transient faults on the lateral line. This approach at best greatly increases the number of customers affected by a transient fault. However, it is known that the recloser may not have adequate protection reach, resulting in undetected persistent faults that can cause a danger to the community. Another historic way of dealing with lateral line* faults is with the help of drop-out sectionalizers. This device needs an upstream recloser or circuit-breaker to trip on a fault current. This gives stress to the downstream network for multiple times until the sectionalizer finally drops out. All above discussed scenarios can be improved by using the Siemens Fusesaver. Due to the low customer numbers on rural lateral lines* it was often difficult for the utility to find a cost-effective solution to this problem until now! The network example below shows a Fusesaver in line with a partner fuse and two Fusesavers without a fuse. All Fusesaver devices have the same hardware, but different customer-configurable protection sequences. For a detailed description, please refer to the following sections of this document. *) also referred to as T-offs or spur lines R-HG11-FR--100.tif CB CB CB CB 70 R 25 SS CB FS FS FS Item R CB FS SS Recloser Circuit-breaker Fusesaver Substation Fuse holder and partner fuse Feeder line Lateral line (also referred to as T-off or spur line) 71 HG a_en eps 4 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

5 Contents Contents Page Fusesaver 5 Siemens Fusesaver TM *) 3AD8 R-HG11-FR-101a.tif General 6 The Fusesaver system Design of the switch unit 8 Self powering 8 Vacuum interrupter 9 Magnetic actuator 9 External lever 9 Fusesaver mounting options 10 Line mounting 10 Cross-arm or pole mounting 10 Rating plate 10 Communications module Wireless communications 11 Battery 11 LED 11 Tripping and closing Siemens Connect software Configuration 12 Operation 12 Event data 13 Load profile data 13 Reliability data 13 Protection functions Fusesaver protection overview 14 Configurable dead time 15 Three-phase lockout protection 15 Pseudo three-phase trip protection 15 Pseudo three-phase trip and three-phase lockout 15 Protection modes 16 Standards 16 Ambient conditions 16 Altitude correction factor 16 Number of operating cycles 16 Product range overview 17 Scope of delivery 17 *) TM = Trade Mark Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

6 General Siemens Fusesaver 3AD8 1.1 Fusesaver, the world s fastest medium-voltage (MV) outdoor vacuum circuit-breaker, is the most cost-effective solution for optimizing reliability while minimizing operating costs of rural overhead MV networks. It is capable of almost completely removing the impacts of temporary faults on lateral lines. Fusesaver is a new class of intelligent, compact and low-cost single-phase circuit-breaker. The Fusesaver complies with the relevant parts of IEC With on-board microprocessor control and wireless connectivity, Fusesaver has configurable protection, multi-phase operation functions, on-board event history, load profiling and can be integrated into a SCADA system for remote control. It is an electrically floating device that hangs directly from the MV line. With no earth connection, it has no electrical stresses on its insulators, resulting in long life. It self-powers by harvest- ing and storing energy from the line current. Fault detection is achieved with a cutting-edge, high-speed protection algorithm. The Fusesaver is designed to either: Be installed in series with the fuse. When it senses a fault current, it will open before the fuse can melt, and stay open for a pre-determined time (dead time) to clear a transient fault. Then, the Fusesaver closes again reconnecting supply. This is the traditional Open-Close Fusesaver approach Replace the fuse altogether. When installed in this manner the Fusesaver can perform the same Open-Close functionality as above to clear a transient fault but can also perform a second Open operation to clear a permanent fault. For highest flexibility, it is our customers choice, when configuring the Fusesaver, to select between the O-C and the O-CO operating cycle. Siemens Fusesaver [O-1s-C]* with partner fuse Whilst the fuse protects the lateral line, the Fusesaver protects the fuse from transient faults. Performance with temporary faults Performance with permanent faults Current Temporary fault Load current Current Permanent fault Open Dead time Open Dead time Fusesaver Closed 1 30 sec Fusesaver Closed 1 30 sec Blown Fuse Closed HG a_en eps Blown Fuse Closed HG a_en eps In this case, the fault disappears during the Fusesaver s dead time. After closing, the power supply is restored. The fuse did not operate, and the Fusesaver is ready for the next fault. Only the customers on the affected lateral experience an interruption in power during the Fusesaver s dead time, while all other customers on the feeder, including nearby laterals, do not even notice its operation. When the Fusesaver closes, the fault is still present, resulting in an immediate fault current. The Fusesaver will not operate again and allow the fault current to blow the fuse. Loss of power is unavoidable for customers on this lateral, while all other customers receive an uninterrupted power supply. The Siemens Fusesaver restricts blown fuses on lateral lines to unavoidable cases of permanent faults. *Highest customer flexibility: One hardware platform, two selectable operating sequences and multiple other policy file settings 6 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

7 General Siemens Fusesaver 3AD8 Many utilities worldwide have chosen to remove fuses from their overhead network entirely to address reliability, operator safety and fire prevention concerns. The O-CO Fusesaver provides a new solution to improve rural networks reliability. The fuse is no longer necessary to clear a permanent fault. This Open-Close-Open (O-CO) operating sequence is enabled by a next generation electronics platform. The Fusesaver O-CO is a primary protection device, and protection is operational even when the line is unenergized. This is supported by a communications module with on-board battery fitted to each Fusesaver O-CO. As part of this overall new electronics platform, a range of new features and performance enhancements have been implemented as follows: The Fusesaver O-CO maintains two fully configurable protection curves that can be applied to any protection trip The user now has much greater configurability of protection functionality depending upon status of the external lever. Not only can the protection curve be changed, but also the protection sequence and the three-phase lockout and pseudo three-phase trip functions can be enabled or disabled. The protection sequence can be configured to OFF, single shot or O-CO and this can be changed via SCADA control, if an RCU is installed Thermal overload protection provides a self protection against excessive load current Fault passage indication functionality: When a Fusesaver trips to lock-out on a permanent fault, the LED of the communications module will flash every 3 s for a user-defined period of time of up to 7 hours. 1.1 Siemens Fusesaver [O-2s-CO]* without partner fuse The Fusesaver O-CO is the ultimate Fusesaver, as the fuse is not required at all. Performance with temporary faults Performance with permanent faults Current Temporary fault Load current Current Permanent fault Open Dead time Open Dead time Fusesaver Closed 2 30 sec Fusesaver Closed 2 30 sec HG a1_en eps HG a1_en eps In this case, the fault disappears during the Fusesaver s dead time. After closing, the power supply is restored and the Fusesaver is ready for the next fault. Only the customers on the affected lateral experience an interruption in power during the Fusesaver s dead time, while all other customers on the feeder, including nearby lateral, do not even notice its operation. When the Fusesaver closes, the fault is still present, resulting in an immediate fault current. The Fusesaver will operate again and stay open. Loss of power is unavoidable for customers on this lateral, while all other customers receive an uninterrupted power supply. *Highest customer flexibility: One hardware platform, two selectable operating sequences and multiple other policy file settings Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

8 The Fusesaver system The Fusesaver system 1.1 In order to minimize installation and operating costs, the Siemens Fusesaver was developed as part of an integrated system of tools and accessories. All system components work together, which permits easy installation, fast commissioning, and reliable operation in all conditions A typical Fusesaver installation includes the following items for each phase: 1 Fusesaver 3 Bird guard 2 Line clamping assembly 4 Communications module R-HG11-FR-102.tif A typical Fusesaver installation includes the following items for each phase: 1. Fusesaver 2. Line clamping assembly 3. Bird guard 4. Communications module Configuration of the unit is achieved through a wireless connection to a PC application called Siemens Connect. Design of the switch unit The Fusesaver is a fully integrated unit consisting of a vacuum interrupter driven by a magnetic actuator. On-board current transformers both power the Fusesaver and provide current measurement inputs into the built-in electronics control and protection module. The external insulation is high grade silicone rubber and the mechanism housing marine grade aluminium for long outdoor life. Self powering mm R-HG11-FR-103.tif The Fusesaver is capable of self powering from the very low line currents found on rural overhead networks. The Fusesaver is manufactured in three models with the low range model requiring as little as 0.15 A line current to power the unit. 1 Dead-end 2 Fault detection current transformer 3 Vacuum interrupter 4 Bird guard (optional) 5 Power current transformer 6 Magnetic actuator 7 Electronic module 8 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

9 Vacuum interrupter, magnetic actuator, external lever Vacuum interrupter The Fusesaver relies upon Siemens well-established vacuum interrupter technology. The vacuum interrupter utilized in the Fusesaver is a specific innovation by Siemens to facilitate the half-cycle fault interruption required to be able to successfully save fuses. 1.1 R-HG11-FR-105.tif R-HG11-FR-104.tif Magnetic actuator The magnetic actuator is another specific innovation by Siemens developed for the Fusesaver to also provide the half-cycle interruption capability. The magnetic actuator can unlatch in less than 2 ms and have the vacuum interrupter contacts fully open within another 4 ms. The magnetic actuator is directly coupled to the position indi cator which is visible from ground level. Fusesaver position indicator External lever The Fusesaver is fitted with an external lever that allows an operator to change the protection and other operational parameters of the Fusesaver. When the lever is in the UP position the LEVER UP settings are in force. R-HG11-FR-06.tif If a line crew is required to work downstream of the Fusesaver, they can pull DOWN the external lever to change the function of the Fusesaver according to the LEVER DOWN settings. Typically these alternative settings would be to either turn the protection OFF, or to implement a fast single-trip protection mode with half-cycle protection. Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

10 Fusesaver mounting options, line mounting, cross-arm or pole mounting, rating plate Fusesaver mounting options 1.1 R-HG11-FR-106.tif Fusesaver is an electrically floating device so requires no earthing. This product architecture allows for a number of different mounting options. In all cases the Fusesaver has been designed to be mounted horizontally. Line mounting The preferred method for mounting of the Fusesaver is to hang it directly from the line using the line clamping assembly. The line clamping assembly connects directly to the dead-end of the conductor and ensures that the Fusesaver is hung at its center of mass. A cable connects the Fusesaver terminals to the conductor. Line mounting Cross-arm or pole mounting For locations where it is impractical to line mount the Fusesaver, an alternative is to use a cross-arm or the pole. A composite station post insulator with special end brackets is used to support the Fusesaver. Cross-arm mounting R-HG11-FR-107.tif Pole mounting R-HG11-FR-137.tif Rating plate Rating plate Note: For any request regarding spare parts, subsequent deliveries, etc. the following details are necessary: Type designation Serial No. Year of manufacture 10 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

11 Communications module Communications module The communications module plugs into a three-pin connector on the bottom of the Fusesaver and provides a short range wireless link between the Fusesaver and other devices. It also has a built-in battery. The module allows the crew to interface with Siemens Fusesaver from ground level using a laptop. It can be installed from the ground using a live-line stick equipped with a special communications module attachment tool. 1.1 The communications module has multiple purposes. It can be: Installed temporarily: At time of commissioning to allow the Fusesaver to be configured and tested During service to allow Fusesaver to be manually operated, line data accessed and event logs downloaded. Installed permanently: To allow Open-Close-Open functionality To allow three-phase functionality To improve the Fusesaver performance by reducing the capacitor recharge time and increasing the accuracy of the event log To enable the above functions and also to connect to a Remote Control Unit (RCU) thereby integrating the Fusesaver into the user s SCADA network. Wireless communications The communications module includes an intelligent short range wireless transceiver which enables encrypted communication to the Fusesaver from ground level. The wireless link uses the public 2.4 GHz band with a proprietary protocol. The effective range of the communications module depends on the installation and site conditions. A typical range is 20 m (60 ft) in line of sight. Battery The communications module is normally powered by energy extracted from line current by the Fusesaver. The communications module includes a battery to provide power to run the communications module radio and to manually operate the Fusesaver when the line current is off. LED The communications module has a transparent window on the underside behind which a high intensity LED is localized. When illuminated, this LED is visible from the ground in daylight. This LED is used to assist the operator during commissioning and when manually operating the Fusesaver. Tripping and closing The communications module is fitted with external actuators that may be used to trip or close the Fusesaver. Using the wireless communications between the Fusesavers it is also possible to synchronously trip and close Fusesavers. Communications module Communications module carry case kit R-HG11-FR-110.tif R-HG11-FR-109.tif R-HG11-FR-108.tif Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

12 Siemens Connect software 1.1 Siemens Connect software Communication with the Fusesaver is performed using a special Fusesaver PC application, a USB radio antenna, and a short range (approximately 20 meters) radio integrated in the communications module. Fusesaver + communications module communicates with USB-antenna Configuration The Fusesavers are configured wirelessly through the Siemens Connect PC application. All the user needs to do is to identify the Fusesavers to be configured together as a site, load the policy file that includes the protection settings defined by the utility and tell the Fusesaver the type and rating of its partner fuse. The entire process is completed within a few minutes. R-HG11-FR-113a1.tif R-HG11-FR-112.tif R-HG11-FR-111a.tif R-HG11-FR-114a1.tif Operation When on-site, the line crew can access the live data in the Fusesaver using the Siemens Connect PC application. This live data includes: Details of the protection settings in the Fusesaver The Fusesaver open/closed status The load current in each Fusesaver The protection mode that is active Whether the protection is armed Details on the most recent fault Details on the Fusesaver and battery life Status of the communications between Fusesavers (peer communications). The operators also have the ability to trip and close the Fusesaver using controls from the PC. 12 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

13 Siemens Connect software Event data Fusesaver stores a time-stamped history of the major events in its on-board memory. The event record contains a history of up to 3,000 events including protection operations, fault data, outage durations, and configuration changes. The event data can be viewed using the Siemens Connect PC application. Data can be filtered and exported as required. 1.1 R-HG11-FR-115.tif Load profile data The Fusesaver can collect data on the current flowing in each phase of an installation. The Fusesaver can report the following data for each 24 hour period: The minimum current (with time stamp) The maximum peak current (with time stamp) The average daily current. Each time an event log is retrieved from Fusesaver the load profile data is stored onto the PC. The user can then display the data using the Siemens Connect tool in a number of formats. R-HG11-FR-142.tif Reliability data The purpose of the line reliability analysis tool is to allow the user to generate useful reliability performance data for a particular line. The analysis is conducted between a start date and end date that are selected by the user. The reliability statistics reported include the following items on a per phase basis: The recorded number of detected surge events The recorded number of detected fault events The recorded number of fault clearing events The recorded number of permanent fault events The total duration of outages due to permanent fault events. R-HG11-FR-116.tif Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

14 Protection functions 1.1 Fusesaver with partner fuse time-current curve (a FAST protection curve is possible to add as shown in the lower picture on this page) Time 10 s d1 d2 100 Current (A) 1000 b K-type 15 A fuse d Fusesaver set to co-ordinate with a 15 A K-type fuse d1 Minimum trip current multiplier (x2) d2 Maximum fault time (0.5 sec) d3 Instantaneous multiplier (x10) d4 Minimum fault time (OFF) d Fuse replacement protection time current curve Time d3 d1 Minimum trip current multiplier ( 2/ 1) d2 Maximum fault time (1.5 sec/1 sec) d 10 s d1 d Current (A) 1000 Fusesaver that replaces a K type 30 A fuse d3 Instantaneous multiplier ( 20/ 8) d4 Minimum fault time (0.1 sec/off) d d3 b d4 NORMAL FAST d4 HG a_en_2.eps HG a_en eps Fusesaver protection time-current curve Fault detection is achieved with a cutting-edge, high speed protection algorithm that is capable of detecting faults within 2 ms. On the first trip the Fusesaver can clear the fault in the first half cycle when required. The default Fusesaver protection algorithm uses an inverse protection curve that is based upon an i 2 t value. When the Fusesaver is installed in series with a partner fuse, the algorithm ensures that the fault is cleared before its partner fuse starts to melt. At time of commissioning, the Fusesaver is configured to know the type and rating of its partner fuse that it is saving. When the Fusesaver is installed as a fuse replacement with the open-close-open functionality, the i 2 t of the inverse curve is set at best to approximately the rating of the fuse being replaced. At time of commissioning, the Fusesaver is configured to know the type and rating of the fuse that it is replacing. The Fusesaver can store two protection curves, a NORMAL and a FAST protection curve. The inverse part of the curve (d) is defined by the i 2 t of the fuse type the Fusesaver is protecting or replacing and is common to both curves. Additional configuration items required for each curve are the pick-up level (d1), the maximum time element (d2), the instantaneous multiplier (d3) and the minimum time element (d4). Minimum trip current multiplier The minimum trip current is a multiple of the fuse rating and sets the pickup level for the protection functionality. This is the current level above which the Fusesaver senses a fault. For example, if the Fusesaver is set for a 12 A fuse and a minimum trip level of x3 is selected, then any current below 36 A will not be recognized as a fault. Maximum fault time setting Once the current has risen above the minimum trip level, the Fusesaver picks the fault and will trip on an inverse-time basis to save the fuse. However, if the inverse-time protection has not tripped the Fusesaver before the maximum fault time is reached, then the Fusesaver will trip. Minimum fault time setting Once the current has risen above the minimum trip level, the Fusesaver has picked up the fault and will trip on an inverse time basis. However, the Fusesaver will not trip before the minimum trip time has been reached. Instantaneous trip setting The Fusesaver runs an inverse time curve to match the fuse that it is protecting. However the Fusesaver can also be set to trip instantaneously for faults above a certain level. The Fusesaver instantaneous protection works as a multiple of the fuse rating. So, for example, if the fuse rating is 10 A and the instantaneous multiplier is set to x5, then the Fusesaver will trip instantly for faults above 50 A. 14 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

15 Protection functions Configurable dead time The dead time is the period after the Fusesaver has tripped on a fault and before it closes. In general, the longer the dead time the greater the chance that a transient fault will be cleared by the operation of the Fusesaver. The dead time is a configuration option in the range 1-30 s (O-C) or 2-30 s (O-CO). Three-phase lockout protection When all the Fusesavers on a line are fitted with communications modules, it is possible to configure them so that if any one of them detects a permanent fault then after a start delay of typically less than 2 s, all three phases will be tripped and stay tripped. The two options are: Three-phase LOCKOUT DISABLED, this is the default Three-phase LOCKOUT ENABLED. Note that three-phase lockout operation can be affected by the position of the protection-off lever. Pseudo three-phase trip protection When all the Fusesavers on a line are fitted with communications modules, it is possible to configure them so that if one detects a fault and trips, the other two phases will trip shortly afterwards (typically less than 2 s). The three phases will then reclose simultaneously after the dead time of the Fusesaver that tripped first. This feature may be used to block backfeed current on a delta load circuit. Pseudo three-phase trip and three-phase lockout When both pseudo three-phase trip and three-phase lockout functions are enabled, the Fusesavers will act like a threephase soft ganged reclosing circuit-breaker. Three-phase lockout protection HG _5_en eps OPEN CLOSED OPEN CLOSED OPEN CLOSED HG _7_en eps Pseudo three-phase trip protection OPEN CLOSED OPEN CLOSED OPEN CLOSED s 50 Time (s) Current (A) Current (B) Current (C) Fusesaver A Fusesaver B Fusesaver C Current (A) Current (B) Current (C) Fusesaver A Fusesaver B Fusesaver C Time (s) Pseudo three-phase trip and three-phase lockout HG _8_en eps Current (A) Current (B) Current (C) OPEN CLOSED OPEN CLOSED OPEN CLOSED Fusesaver A Fusesaver B Fusesaver C Time (s) Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

16 Protection modes, standards, ambient conditions, altitude correction factor and number of operating cycles 1.1 Protection modes The operation of the Fusesaver protection can be altered by changing the protection mode. The modes available depend upon whether the Fusesaver is used with a partner fuse or as a fuse replacement. Further, the Fusesaver will store a mode selection that is applicable if the external lever is in the UP or DOWN position to allow users to adjust to different operational requirements when a live line crew is working downstream of a Fusesaver. The following modes are possible: Standards The Fusesaver conforms to the relevant sections of the following standard: IEC Ambient conditions The Fusesaver is suitable for use in outdoor environments with ambient temperatures in the range of 40 C to +50 C and relative humidity in the range of 0 % to 100 %. Mode O-C O-CO Functionality Protection OFF YES YES The Fusesaver will not trip on a fault. Normal YES NO The Fusesaver trips based on the NORMAL curve settings and recloses after the dead time. Fast YES NO The Fusesaver trips based on the FAST curve settings and recloses after the dead time. Normal-normal NO YES The Fusesaver trips based on the NORMAL curve settings. The Fusesaver recloses after the dead time. If the fault is still present the Fusesaver trips a 2 nd time based on the NORMAL curve settings and then stays in the open state. Normal-fast NO YES The Fusesaver trips based on the NORMAL curve settings. The Fusesaver recloses after the dead time. If the fault is still present the Fusesaver trips a 2 nd time based on the FAST curve settings and then stays in the open state. Fast-normal NO YES The Fusesaver trips based on the FAST curve settings. The Fusesaver recloses after the dead time. If the fault is still present the Fusesaver trips a 2nd time based on the NORMAL curve settings and then stays in the open state. Fast-fast NO YES The Fusesaver trips based on the FAST curve settings. The Fusesaver recloses after the dead time. If the fault is still present the Fusesaver trips a 2 nd time based on the FAST curve settings and then stays in the open state. Normal single YES YES The Fusesaver trips based on the NORMAL curve settings. The Fusesaver does not reclose and stays in the open state. Fast single YES YES The Fusesaver trips based on the FAST curve settings. The Fusesaver does not reclose and stays in the open state. The protection mode in force is determined as follows: a) If the external lever is UP, the lever UP settings will be in force. This represents the usual expected operation of the Fusesaver. b) A local operator pulls the external lever down. In this case, the Fusesaver protection is forced to a mode that is predetermined by the user under this situation. c) A remote operator using a SCADA (Supervisory Control and Data Acquisition) system sets the mode. To do this, an RCU must be installed. d) A local operator uses a control panel in an RCU to set the mode. Ambient conditions Altitude correction factor The dielectric strength of air insulation decreases with increasing altitude due to low air density. The rated lightning impulse withstand voltage values specified in the chapter Technical Data apply to a site altitude of 1,000 m above sea level. For an altitude above 1,000 m, the insulation level must be corrected according to the drawing as per IEC The characteristic shown applies to the rated short-duration power-frequency withstand voltage and the rated lightning impulse withstand voltage. To select the devices, the following applies: U U 0 K a U Rated withstand voltage under standard reference atmosphere U 0 Rated withstand voltage requested for the place of installation K a Altitude correction factor according to the opposite diagram Example For a requested rated lightning impulse withstand voltage of 75 kv at an altitude of 2,500 m, an insulation level of 90 kv under standard reference atmosphere is required as a minimum: 90 kv 75 kv 1.2 Number of operating cycles 4 HG a_en eps Altitude correction factor m 4000 Site Site altitude The Fusesaver is maintenance-free for 2,000 operating cycles. The Fusesaver has been type tested for 70 short-circuit breaking operations at 4 ka and 30 short-circuit operations at 6.3 ka. Altitude correction factor HG _en eps 16 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

17 Product range overview and scope of delivery Product range overview The first main selection option is linked to the minimum line current available to power the Fusesaver. Three options are available: Low range Fusesaver Standard range Fusesaver High range Fusesaver. Model type Low range Standard range High range 1.1 Minimum line current for operation A Fuse ratings A 2 to 20 5 to 50 5 to 100 Rated current A Rated short-circuit breaking current I sc ka Rated short-circuit making current I peak ka Rated short-time current ka Rated short-time current duration s Fault break operations at 100 % No The low range, standard range and high range Fusesavers are all available with the following voltage rating options: Rated voltage kv Rated lightning impulse withstand voltage U p kv Rated power-frequency withstand voltage U d (60 s) kv Scope of delivery Fusesaver Operating mechanism Magnetic actuator Switching medium Vacuum interrupter Position indicator OPEN: green/closed: red Sensors Integrated current transformers Mounting assembly Line clamping assembly incl. bird guard (recommended) Pole mounting assembly incl. wildlife guard (recommended) Cross-arm mounting assembly incl. wildlife guard (recommended) Communication With optional communications module Software for operation and configuration Siemens Connect Tools Communications module attachment tool Accessories/spare parts A wide range of accessories and spare parts can be supplied (refer to selection on page 30) Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

18 18 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG R-HG11-FR-139.tif

19 Contents Contents Page Remote Control Unit 19 General 20 RCU principle 20 R-HG11-FR-117.tif The RCU system 21 RCU cubicle 21 Electronics housing 22 Radio tray 22 Cubicle heater 22 User interface 22 Operator panel 23 Isolated input 23 Solar panel 23 Voltage transformer Remote Control Unit 3AD8 Communications interface 24 Communications protocol 24 RCU Connect software 24 RCU Probe software 24 Standards 25 Ambient conditions 25 Scope of delivery 25 R-HG11-FR-118.tif Remote Control Unit 3AD8 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

20 General Siemens Remote Control Unit 1.2 The Remote Control unit (RCU) is an optional addition to the Fusesaver system used to connect the Fusesaver pole-mounted circuit-breaker into a utility SCADA system. The RCU is a pole-mounted enclosure containing a microprocessor, a short range (approximately 20 m) radio used to communicate with the Fusesaver and a long range radio (or modem). The design and testing of the RCU is according to the relevant parts of IEC :2005 Information technology equipment Safety. RCU principle The RCU acts as an interface between a set of Fusesavers on the power line and a utility SCADA system. To do this, the RCU uses its configuration to find and access installed and running Fusesavers mounted on the power pole. It communicates with the Fusesavers using its built-in short range radio. The Fusesavers are installed on each of the phases of the power line and are organized to work as a set to control that line. One, two or three Fusesavers can be organised in this way for a single-phase, two-phase or three-phase line. An RCU provides access to the Fusesavers on a single power line, so that if there are multiple lines at a site, then a separate RCU is required for each line. On start up, the RCU turns on its short range radio and scans for transmissions from the Fusesavers which match its configuration. When it finds them, it will acquire data from the Fusesavers and put it into its database ready for re-transmission over a long range radio (or modem) back to the utility SCADA system master station using the DNP 3 protocol. The long range radio is mounted in the radio tray by the utility and is provided with power by the RCU electronic system. Data in the RCU database includes information about the Fusesavers and the RCU itself. Usually a subset of this data is mapped into the protocol used by the SCADA system. R-HG11-FR-120.tif R-HG11-FR-121a.tif R-HG11-FR-119a.tif 20 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

21 The RCU system, RCU cubicle The RCU system In order to minimize installation and operating costs, the Siemens Remote Control Unit was developed as part of an integrated system of tools and accessories. All system components work together, which permits easy installation, fast commissioning, and reliable operation in all conditions. A typical Fusesaver and RCU installation includes the following items for each phase: 1. Fusesavers with communications modules 2. Remote Control Unit 3. Solar power Configuration of the RCU is achieved through a wireless connection to a PC application called RCU Connect R-HG11-FR-122.tif A typical Fusesaver and RCU installation includes the following items for each phase: 1 Fusesavers with 3 Solar panel communications modules 2 Remote Control Unit RCU cubicle The RCU enclosure in mounted to the pole using the polemounting bracket and is manufactured from powder-coated stainless steel for long service life. Material options are available at time of ordering including 304 (standard) and 316 grade stainless steel. The RCU enclosure has a handle with internal three-point locking mechanism. An external padlock can be fitted to restrict access. On the top of the RCU enclosure is a high grade UV-stabilized plastic shade hood. This shade hood serves to reduce solar heating and to provide an aperture for the short range radio. 6 1 Conductor 2 Fusesaver 3 Communications module 4 Fuse 7 5 Remote Control Unit 6 Earth connection 7 Mains connection 8 Antenna for long range communications At the rear of the RCU enclosure there is an earth stud and a number of openings fitted with cable glands to allow external wiring to access the internals of the RCU. R-HG11-FR-123.tif Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

22 Electronics housing, radio tray, cubicle heater, user interface Electronics housing The electronics housing contains the microprocessor, battery, power connection terminals, data connection points and the user interface for the RCU. The RCU has a simple user interface for operations and maintenance purposes. The RCU front panel has a number of LED indicators. The LEDs are normally off (to reduce power consumption) and turn on automatically while the door is open as controlled by the position of the door switch. R-HG11-FR-124.tif The electronics housing also holds the 12 V, 7.2 Ah lead acid battery. The electronics housing is normally powered by a selectable 115/230 V AC low-voltage supply. 1.2 Radio tray The radio tray is available for fitting the customer-specific radio, modem or other means to connect to the utility s SCADA system. The radio tray hinges down and allows access to the radio behind. When in the hinged up position the tray provides a degree of protection from driving rain. Cubicle heater The cubicle heater is an optional accessory mounted behind the radio tray and connected to the power supply isolator. It has a positive temperature coefficient element which acts as a thermostatic heater keeping the battery and electronic compartment above 15 C for ambient temperatures as low as 40 C. Note that a power supply isolation unit is required if a heater is fitted. User interface The RCU provides a basic user interface on the electronics housing primarily to aid during commissioning. There are a range of toggle switches to allow the local user to turn ON/OFF various parts of the RCU system. An LED indicator display shows the status of the different inputs and outputs of the RCU. R-HG11-FR-127.tif R-HG11-FR-125.tif R-HG11-FR-126.tif 22 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

23 Operator panel, isolated input, solar panel, voltage transformer Operator panel The Fusesaver operator control panel is an optional ac - cessory mounted on the radio tray and connected to the RCU electronics compartment. The operator control panel allows a local user to trip and close the Fusesavers or to change protection mode active in the Fusesavers. It also provides additional status information. Isolated input R-HG11-FR-128.tif The power supply isolation unit is an optional accessory that provides a point of isolation for the electronics housing and the cubicle heater. Where an isolator is fitted the incoming mains is connected to the isolator and the isolator provides sockets for the electronics assembly and for the heater. The isolation unit is required if: The RCU is mains powered and if it is preferred to provide a point of isolation inside the cubicle for changing the electronic housing. Note that the user will still need to provide a point of isolation for the wiring to the RCU. A cubicle heater is fitted. The isolation unit is not an applicable option for a solar powered RCU. Solar panel Where an LV mains supply is not available, Siemens has a solar panel option to provide charge to the batteries. The solar panel is sized to provide adequate charge for energy efficient radios and modems in latitudes less than 45. The panel angle can be adjusted between two settings to optimize performance for given latitudes. The solar panel must be mounted on the same power pole as the RCU. R-HG11-FR-129.tif 1.2 The solar panel is connected into the terminal compartment to a dedicated set of terminals as an alternative to the mains supply. Solar ratings Power ratings Nominal voltage Cell type Value 65 W 12 V Polycrystalline R-HG11-FR-130.tif Voltage transformer Where LV mains is not available and solar power in not practical, the RCU can be powered by a voltage transformer mounted above the RCU and connected to the MV lines. Optional surge arresters are also available. VT ratings Primary voltage 11/22 kv 15 kv 27 kv 11/22 kv 15 kv 27 kv Type p-p p-p p-p p-e p-e p-e R-HG11-FR-131.tif According to IEC Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

24 Communications interface, communications protocol, RCU Connect software, RCU Probe software Communications interface In order to communicate with the SCADA system master station a long range radio or modem is required. The RCU electronics provide a serial asynchronous data interface (RS232) and an Ethernet port (RJ45) for this purpose. A purpose-built cable connects the radio/modem to the RCU interface. The design and construction of this cable may be carried out by the customer or as a value added service provided by the Siemens Service Center. Communications protocol The RCU supports the DNP 3.0 over both serial link and IP protocol. 1.2 RCU Connect software RCU Connect is a PC application that allows the user to easily configure a Remote Control Unit and to check the operation of a Remote Control Unit in service. It also provides a means for configuration of the protocol mapping. R-HG11-FR-132.tif RCU Probe software R-HG11-FR-133.tif RCU Probe is a PC program that allows a user to directly connect to the RCU via Ethernet cable to view the current state of the protocol database. RCU Probe allows the user to override the value or qualifiers of all points in the protocol database in order to verify their change of state at the utility SCADA control room. The user may also send controls, times and view some general logging information. The intended users of RCU Probe are the utility SCADA technical staff for the purpose of verifying the correct operation of the SCADA system, communications system and RCU itself. 24 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

25 Standards, ambient conditions, scope of delivery Standards The design and testing of the Remote Control Unit is according to the relevant parts of IEC : 2005 Information technology equipment Safety. Ambient conditions The Remote Control Unit is suitable for use in outdoor environments with ambient temperatures in the range of 40 C to +50 C and relative humidity in the range of 5 % to 95 %. For temperatures below 15 C, the cubicle heater will be required C 40 C HG a eps 1.2 Scope of delivery Specifications Value Power supply 115/230 V AC mains 12 V/7.2 Ah battery backup Solar power options Radio power supply User set variable 3 9 V 2 A or 12 V battery supply 5 A Radio data interface Serial asynchronous RS232 or user set logic levels variable 3 9 V or 10/100 Base T Ethernet Radio compartment size mm Standard protocol DNP 3.0 Software for operation and configuration is: RCU Connect software Weight 18 kg Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

26 26 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG R-HG11-FR-134.tif

27 Product Selection Contents Contents Page Product Selection 27 Ordering data and configuration example 28 Selection of Fusesaver 29 Selection of Remote Control Unit 30 Selection of additional equipment 31 Selection of accessories and spare parts 32 Siemens Fusesaver 3AD8 Siemens Remote Control Unit (RCU) 3AD8 R-HG11-FR-135a.tif R-HG11-FR-101a.tif 2 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

28 Product Selection Ordering data and configuration example Order number structure The Siemens Fusesaver order number either configures a Siemens Fusesaver or a Remote Control Unit. The relevant data make up the 16-digit order number. The primary part covers the main electrical data of the Fusesaver or specifies an RCU. The secondary part covers the mounting assembly, communication options and others. Order codes Individual equipment versions, marked with 9 or Z in the 8 th to 16 th position, are explained more in detail by a 3-digit order code. Several order codes can be added to the order number in succession and in any sequence. Special versions In case of special versions, -Z is added to the order number and a descriptive order code follows. If several special versions are required, the suffix -Z is listed only once. If a requested special version is not in the catalog and can therefore not be ordered via order code, it has to be identified with Y 9 9 after consultation. The agreement hereto is made between your responsible sales partner and the order processing department. a: alphabetical n: numerical Position: Order codes Order No.: 3 A D n n n n n a a n n n a a n Primary part 1 st position Superior group Switching devices 2 nd position Main group Circuit-breaker 3 rd position Subgroup 2 4 th to 7 th position Basic equipment Design and ratings of the Siemens Fusesaver or selection of a RCU Secondary part 8 th to 16 th position Fusesaver assembly equipment, communication options, RCU options Order codes Group of 3 after the Order No. Format: a n a Special versions ( ) Initiated with -Z Group of 3 after the Order No. Format: a n n Configuration example On the foldout page we offer a configuring aid. Here you can fill in the order number you have determined for your Fusesaver and RCU. Example for Order No.: 3 A D Order codes: 28 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

29 Product Selection Selection of Fusesaver Fusesaver Configuration Position: Order codes Order No.: 3 A D Rated voltage Rated lightning impulse withstand voltage Rated short-duration power-frequency withstand voltage Rated short-circuit breaking current Rated normal current U r U p U d I sc I r kv kv kv ka A A D A A A A D A A A A D A A A A D A A A A D A A A A D A A A Fusesaver assemblies No Fusesaver clamping/mounting assembly 0 Line clamping assembly incl. bird guard (recommended) 1 Pole mounting assembly incl. wildlife guard (recommended) 2 Cross-arm mounting assembly incl. wildlife guard (recommended) 3 In-line tension mounting kit 4 Pole- or cross-arm mounting assembly without insulator 2 or 3 Z T 3 1 Clamping assembly without bird/wildlife guard 1, 2 or 3 Z T 3 2 Mounting brackets in 304 stainlees steel 2, 3 Z T 3 3 Imperial fastener mounting for US market (no fasteners included) 1, 2, 3 or 4 Z T 3 4 Communications module With communications module B Without communications module C 2 Language of operation manual, rating plate English 1 Other languages on request (increased delivery time) 9 R 1 Y Fusesaver additional options Position indicator with interchanged colors Green: CLOSED, Red: OPEN Z T 0 7 Fusesaver configuration example 1 Fusesaver (27 kv, 4 ka, 100 A), 1 line clamping assembly incl. bird guard, 1 communications module 3 A D B A A A 1 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

30 Product Selection Selection of Remote Control Unit (RCU) Remote Control Unit (RCU) Configuration Position: Order codes Order No.: 3 A D Remote Control Unit (RCU) 3 A D A RCU battery type: 7.2 Ah lead acid B RCU enclosure 316 stainless steel, powder-coated stainless steel, powder-coated 3 RCU mounting assembly No RCU mounting assembly 0 Standard pole mounting assembly 1 Side mounting assembly 2 RCU protocol: DNP RCU isolator and heater None External isolated mains input External isolated mains input and heater A B C Operator panel None RCU operator panel Fusesaver OC (Modes) RCU operator panel Fusesaver OCO (Modes) A B D 2 Language of operation manual, rating plate English 1 Other languages on request (increased delivery time) 9 R 1 Y RCU configuration example RCU battery type: 7.2 Ah lead acid, RCU enclosure: 304 stainless steel powder-coated, standard pole mounting assembly, RCU protocol: DNP 3.0, without RCU isolator and heater, without operator panel 3 A D A B A A 1 30 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

31 Product Selection Selection of additional equipment (communication, mounting assembly, demo kits) Fusesaver and RCU Communication, mounting assembly, demo kits Position: Order codes Order No.: 3 A X Fusesaver communication Fusesaver communications module 3 A X A Fusesaver communications module attachment tool 3 A X B Fusesaver PC communications kit 1) 3 A X C Fusesaver communications module carry case kit 2) 3 A X D Fusesaver mounting assembly Fusesaver bird guard 3 A X A Fusesaver wildlife guard (set of 3) 3 A X B Fusesaver cross-arm bracket fish plate kit 3 A X C Fusesaver wildlife guard (1 piece) 3 A X D Fusesaver wildlife guard clip (1 piece) 3 A X E Fusesaver line clamping assembly 3 A X A Fusesaver pole mounting assembly 3 A X B Fusesaver pole mounting assembly without insulator 3 A X E Fusesaver cross-arm mounting assembly 3 A X F Fusesaver cross-arm mounting assembly without Insulator 3 A X J Fusesaver demo kits Fusesaver demo kit (27 kv / 1.5 ka / 40 A Fusesaver) 3) 3 A X D Fusesaver demo kit (27 kv / 4 ka / 100 A Fusesaver) 3) 3 A X E Current injection set (for Fusesaver presentation) 3 A X F 1) 1 PC application: Siemens Connect, 1 USB radio antenna 2) 3 communications module, 1 communications module attachment tool, 1 PC communications kit, 1 heavy-duty case 3) 1 Fusesaver, 1 line clamping assembly, 1 bird guard, 2 communications module, 1 communications module attachment tool, 1 PC communications kit, 1 vacuum interrupter, 1 heavy-duty case 2 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

32 Product Selection Selection of accessories and spare parts Fusesaver and RCU Accessories / spare parts Position: Order codes Order No.: 3 A X RCU accessories / spare parts RCU battery 7.2 Ah lead acid 3 A X A RCU solar panel kit 65 W 3 A X B RCU VT kit p-p 11/22 kv 3 A X C RCU VT kit p-p 15 kv 3 A X D RCU VT kit p-p 27 kv 3 A X E RCU VT kit p-g 11/22 kv 3 A X F RCU VT kit p-g 15 kv 3 A X G RCU VT kit p-g 27 kv 3 A X H RCU serial cable RS232 + power 3 A X I RCU side mounting assembly 3 A X A RCU standard pole mounting assembly 3 A X B RCU radio tray heater (requires RCU external isolated mains input) 3 A X A RCU external isolated mains input 3 A X B RCU operator panel Fusesaver OC (Modes) 3 A X C RCU operator panel Fusesaver OCO (Modes) 3 A X D 2 32 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

33 Technical Data Contents Contents Page Technical Data 33 Electrical data, dimensions and weights 34 Dimension drawings 35 Siemens Fusesaver 3AD8 R-HG11-FR-138.tif 3 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

34 Technical Data Electrical data, dimensions and weights 15.5 kv Rated normal current Minimum line current for operation Fuse rating Rated operating sequence: O-2s-CO/O-1s-C Rated short-circuit breaking current Rated short-circuit making current Rated duration of short-circuit Fault break operations at 100 % Mechanical operations Rated lightning impulse withstand voltage Rated short-duration power-frequency withstand voltage Impedance µω between connections Creepage distance Weight I r I t k I SC I peak t k U p U d Order No. A A A s ka ka s No. No. kv kv µω mm kg 3AD AD AD kv I r I t k I SC I peak t k U p U d A A A s ka ka s No. No. kv kv µω mm kg 3AD AD AD Standards according to IEC Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

35 Technical Data Dimension drawings Dimension drawings (mm) Fusesaver Fusesaver with communications module Fusesaver, communications module and line clamping assembly kv Fusesaver pole mounting assembly composite insulator kv Fusesaver cross-arm mounting assembly composite insulator Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

36 Technical Data Dimension drawings Dimension drawings (mm) Remote Control Unit (RCU) 3 Solar panel (RCU powering option) 36 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

37 Annex Contents Contents Page Annex 37 Benefits 38 Inquiry form 39 Configuration aid Foldout page R-HG eps R-HG eps 4 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

38 Annex Benefits Benefits Your technology benefits at a glance Half-cycle switching fastest vacuum circuit-breaker on the market Smart-grid-ready with communications module and Remote Control Unit (RCU) Highly integrated and innovative technology Protection, monitoring and control in a single unit Self-powered Your handling benefits at a glance Lightweight (5.5 kg) Fast and easy installation plug and play Simple line installation Safety benefits for live-line crew thanks to half-cycle switching When the external lever is configured to FAST SINGLE mode, this greatly reduces the consequences of accidents during live- line work. With instantaneous protection that breaks the current in a half cycle, arc burns are greatly reduced and survival chances increase. The Fusesaver can be used as a ganged switch. When the actuator on one phase is operated, all phases will synchronously open/close after a delay of approx. 60 sec. This provides the benefit of avoiding ferroresonance and for operators to be cleared off the area when the switching operation occurs. Your cost benefits at a glance Return on investment typically in less than two years Improved network reliability means fewer penalty payments for both SAIFI and SAIDI Reduced operating costs thanks to reduced maintenance callouts Siemens Fusesaver an optimally compact design matched with rapid ROI* Higher availability, lower network maintenance costs the Siemens Fusesaver helps protect your competitive edge. The first saved fuse pays the installation costs, the second saves your money In a typical distribution network, the average outage duration per year (SAIDI) is within the range of hours per lateral line**. Installing a Siemens Fusesaver can reduce this duration to an absolute minimum, saving you thousands of dollars every year. *) Return on Investment **) Also referred to as lateral lines, T-off or T-taps 4 38 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

39 Annex Inquiry form Please copy, fill in and return to your Siemens partner Inquiry concerning Fusesaver and Remote Control Unit 3AD8 Your address Company Please Submit a quotation Call us Visit us Dept. Name Street Postal code/city Country Phone Fax Siemens AG Dept. Name Street Postal code/city Fax 4 Siemens Fusesaver and Remote Control Unit 3AD8 Siemens HG

40 You prefer to configure your Siemens Fusesaver and Remote Control Unit 3AD8 on your own? Please enter the order number in the configuration aid A D Z See page 29 See page 29 See page 29 See page 29 See page 29 See page 29 See page 29, 30 See page 29, 30 See page 29, 30 See page 29, 30 See page 29, 30 See page 29, 30 See page 29, 30 See page 29, 30 3 A D A D A D A D A D A D A D A D

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