ATS MOLDED CASE WITH ATC 900 CONTROLLER PART 1 GENERAL 01 02 03 04 SCOPE Furnish and install the low voltage automatic transfer switches having the ratings, features/accessories and enclosures as specified herein and as shown on the contract drawings. RELATED SECTIONS REFERENCES The automatic transfer switches and all components shall be designed, manufactured and tested in accordance with the latest applicable standards of UL and NEMA as follows: 4. 7. UL 1008 Transfer Switches UL 991 - Tests for Safety-Related Controls Employing Solid-State Devices NFPA 70 National Electrical Code NFPA 99 Essential Electrical Systems of Health Care Facilities NFPA 110 Emergency and Standby Power Systems NEMA ICS 10 AC Transfer Switch Equipment IEEE 446 Recommended Practice for Emergency and Standby Power Systems SUBMITTALS FOR REVIEW/APPROVAL The following information shall be submitted to the Engineer: Front view and plan view of the assembly Schematic diagram Conduit space locations within the assembly. 4. Assembly ratings including: a. Withstand and Closing rating b. Voltage c. Continuous current rating d. Short-Time rating if applicable e. Short-circuit rating if ordered with integral protection Cable terminal sizes Product Data Sheets. Where applicable, the following additional information shall be submitted to the Engineer: Busway connection Connection details between close-coupled assemblies Composite front view and plan view of close-coupled assemblies 16496E-1 02/17/14
05 06 SUBMITTALS FOR CONSTRUCTION The following information shall be submitted for record purposes: 4. Final as-built drawings and information for items listed in section 04 Wiring diagrams Certified production test reports Installation information Seismic certification as specified The final (as-built) drawings shall include the same drawings as the construction drawings and shall incorporate all changes made during the manufacturing process. QUALIFICATIONS The manufacturer of the assembly shall be the manufacturer of the major components within the assembly. For the equipment specified herein, the manufacturer shall be ISO 9001 or 9002 certified. C. The manufacturer of this equipment shall have produced similar electrical equipment for a minimum period of five (5) years. When requested by the Engineer, an acceptable list of installations with similar equipment shall be provided demonstrating compliance with this requirement. * Provide Seismic tested equipment as follows: The equipment and major components shall be suitable for and certified by actual seismic testing to meet all applicable seismic requirements of the [latest International Building Code (IBC)] [latest California Building Code (CBC) with OSHPD Amendments]. [The equipment shall have OSHPD Special Seismic Certification (OSP) Pre-Approval.] The Project Structural Engineer will provide site specific ground motion criteria for use by the manufacturer to establish SDS values required. The IP rating of the equipment shall be 5 4. The Structural Engineer for the Site will evaluate the SDS values published on the [Manufacturer s] [OSHPD] website to ascertain that they are "equal to" or "greater than" those required for the Project Site. The following minimum mounting and installation guidelines shall be met, unless specifically modified by the above referenced standards. a. b. c. The Contractor shall provide equipment anchorage details, coordinated with the equipment mounting provision, prepared and stamped by a licensed civil engineer in the state. Mounting recommendations shall be provided by the manufacturer based upon the above criteria to verify the seismic design of the equipment. The equipment manufacturer shall certify that the equipment can withstand, that is, function following the seismic event, including both vertical and lateral required response spectra as specified in above codes. The equipment manufacturer shall document the requirements necessary for proper seismic mounting of the equipment. Seismic qualification shall be considered * Note to Spec. Writer - Optional 16496E-2 02/17/14
achieved when the capability of the equipment, meets or exceeds the specified response spectra. 07 08 09 10 11 REGULATORY REQUIREMENTS Provide a certificate of compliance with UL 1008 for the transfer switches furnished under this section. DELIVERY, STORAGE AND HANDLING Equipment shall be handled and stored in accordance with manufacturer s instructions. One (1) copy of these instructions shall be included with the equipment at time of shipment. FIELD MEASUREMENTS OPERATION AND MAINTENANCE MANUALS Equipment operation and maintenance manuals shall be provided with each assembly shipped, and shall include instruction leaflets and instruction bulletins for the complete assembly and each major component. EXTRA PRODUCTS PART 2 PRODUCTS 03 01 MANUFACTURERS C. Eaton * * D. The listing of specific manufacturers above does not imply acceptance of their products that do not meet the specified ratings, features and functions. Manufacturers listed above are not relieved from meeting these specifications in their entirety. Products in compliance with the specification and manufactured by others not named will be considered only if pre-approved by the engineer ten (10) days prior to bid date. CONSTRUCTION Switching devices for 30 Amp through 1000 Amp transfer switches shall be molded case switch type. All breaker transfer switches shall be UL listed for application in their intended enclosures for 100% of their continuous ampere rating. C. The automatic transfer switch shall be of double throw construction operated by a reliable electrical mechanism momentarily energized. D. Each transfer switch shall be positively interlocked both mechanically and electrically to prevent simultaneous closing of both sources under either automatic or manual operation. * Note to Spec. Writer Insert data in blanks 16496E-3 02/17/14
E. F. G. H. I. J. K. Main contacts shall be silver composition and mechanically held in both normal and emergency positions. Switches shall operate delayed transition, with a time delay in the neutral position adjustable from 0 to 120 seconds The switching panel shall consist of completely enclosed contact assemblies and a separate control or transformer panel. Control power for all transfer operations shall be derived from the line side of the source to which the load is being transferred. The transformer shall be multi-tap for ease of voltage adjustment in the field. Transfer switches shall be capable of being operated manually under full rated load conditions. Manual operation shall be accomplished by a permanently attached manual operator, or by integrally mounted pushbuttons. Removable manual operating handles, and handles that may move in the event of an electrical operation during the manual operation, are not acceptable. Manual operators requiring source or load disconnection prior to manual operation are not acceptable. On transfer switches requiring a fourth pole for switching the neutral, the neutral shall be identical to the other power poles. Switched neutral poles which are add-on or overlap, or that are not capable of breaking full rated load current are not acceptable. On transfer switches requiring a solid neutral, the neutral shall be fully rated. Where shown on drawings, transfer switches applied as service entrance equipment shall include molded case circuit breakers with thermal magnetic trip units on [source 1] [source 2][source 1 and 2]. Ground fault protection shall be provided for all switches rated 1000 amperes or more applied on 480Y/277 Vac systems. 02 MICROPROCESSOR LOGIC The transfer switch shall be equal to an Eaton ATC-900 type microprocessor-based controller. The controller shall be hardened against potential problems from transients and surges. Operation of the transfer switch and monitoring of both sources shall be managed by the controller. The automatic transfer switch controllers shall meet or exceed the following standards in addition to the basic switch standards: IEC 61000-4-2 - EMC Testing and Measurement Techniques - Electrostatic Discharge Immunity Test IEC 61000-4-3 - EMC Testing and Measurement Techniques - Radio-frequency, Electromagnetic Field Immunity Test IEC 61000-4-4 - EMC Testing and Measurement Techniques - Electrical Fast Transient/Burst Immunity Test 4. Test IEC 61000-4-5 - EMC Testing and Measurement Techniques - Surge Immunity IEC 61000-4-6 - EMC Testing and Measurement Techniques - Immunity to Conducted Disturbances, Induced by Radio-frequency Fields IEC 61000-4-11 - EMC Testing and Measurement Techniques - Voltage Dips, Short Interrupts and Voltage Variations Immunity Tests 16496E-4 02/17/14
7. CISPR11, Class B - Industrial, Scientific and Medical Radio-frequency Equipment - Electromagnetic Disturbance Characteristics - Limits and Methods of Measurement 8. FCC Part 15, Subpart B, Class B 03 04 05 ENCLOSURE Each transfer switch shall be provided in a [NEMA 1] [NEMA 12] [NEMA 3R] [NEMA 4x] enclosure suitable for use in environments indicated in the drawings. NEMA 1, 12 or 3R enclosures shall be painted with the manufacturer s standard light gray ANSI 61paint. Nema 4X shall be [304] [316] stainless steel. CONTROLLER DISPLAY AND KEYPAD The microprocessor-based controller display shall be UV resistant and include a 4.3 inch Color TFT (480x272), backlit display. The controller shall be capable of displaying transfer switch status, parameters, and diagnostic data. All set point parameters shall be password protected and programmable using the controller keypad, USB port, or remotely using serial port access. The microprocessor-based controller shall include a mimic bus display consisting of six (6) individual LED s (3mm) for indicating the following: 4. Availability status of source 1 Availability status of source 2 Connection status of source 1 Connection status of source 2 Source 1 Preferred Source 2 Preferred VOLTAGE AND FREQUENCY SENSING The controller shall have a voltage range of 0-790 volts (50/60 Hz) with an accuracy of +/- 1% of the reading and a frequency range of 40-70 Hz with an accuracy of +/-.3 Hz. Voltage and frequency dropout and pickup parameters are set as a percentage of the nominal voltage as indicated in the table below. Setpoint Sources Dropout Pickup Undervoltage Source1 and 2 70 97% (DO + 2%) - 99% Overvoltage Source 1 and 2 105 110% 103% - (DO 2%) Underfrequency Source 1 and 2 90 97% (DO + 1Hz) 99% Overfrequency Source 1 and 2 103 105% 101% - (DO 1Hz) Voltage Unbalance Source 1 and 2 5 20% (UNBAL DO% - 2) 3% C. The normal and emergency sources shall include phase reversal protection. The preferred rotation is programmable as ABC or CB 16496E-5 02/17/14
06 07 TIME DELAYS C. D. E. F. A time delay shall be provided to override a momentary power outage or voltage fluctuation, adjustable from 0 to 120 seconds. A time delay shall be provided on transfer to source 2, adjustable from 0 to 166 minutes. A time delay shall be provided for engine failure to start, adjustable 0-6 seconds. A time delay shall be provided on retransfer from source 2 to source 1, adjustable from 0 to 166 minutes. A time delay shall be provided after retransfer that allows the generator to run unloaded prior to shutdown, adjustable form 0 to 166 minutes. *A pre and or post transfer time delay output adjustable from 0-120 seconds. The contact shall be a form-c contact rated for 10-Amp at 250-Vac and 10-Amp at 30-Vdc. G. All delays shall be field adjustable from the microprocessor-based controller without the use of special tools. ADDITIONAL FEATURES One Form C contact for closure of the source 1 generator start circuit for optional use with a dual generator system. The contacts shall be rated for 5-Amp at 250-Vac and 5-Amp at 30- Vdc. One Form C contact for closure of the source 2 generator start circuit. The contacts shall be rated for 5-Amp at 250-Vac and 5-Amp at 30-Vdc. C. The controller shall include two independently programmable Engine Exercisers, selectable as disabled, 7, 14, or 28 day interval, or by calendar date. Run time shall be adjustable for 0-600 minutes, with or without load. Upon loss of source 2 power, the ATS shall automatically return to source Transfer time delays shall also be independently programmable for test events. D. E. The controller shall include a keypad pushbutton to initiate a system test. The controller shall include 4 user configurable inputs. Each input provides 50 volts at 10ma and can be user configured to one of the following features: Input to accept a remote contact which closes to initiate a transfer to source This feature shall be failsafe and an automatic retransfer shall occur in the event that source 2 power is lost. Input to accept a remote contact which closes to initiate a transfer to source This feature shall be failsafe and an automatic retransfer shall occur in the event that source 2 power is lost. Input to accept a remote contact which opens to inhibit transfer to source 4. Input to enable monitor mode to disable automatic operation of the transfer switch while continuing to display status. Monitor mode allows set point programming at the controller display. Input to enable lockout feature to disable automatic operations of the transfer switch following an overcurrent trip of an integral circuit breaker. * Note to Spec. Writer Optional 16496E-6 02/17/14
F. G. H. I. J. 7. Input to enable or disable manual retransfer to source Input to initiate manual retransfer to source 8. Input to initiate a remote engine test. The test will run using the programmed engine test set points. 9. 10. 1 1 Input to select source 1 or source 2 as the preferred source. Input to initiate a remote load test. Input to indicate the bypass transfer switch is closed on a source. Input to bypass time delays 1 Input to receive engine start signal from a master controller in a three source application. The controller shall include 4 user configurable outputs rated for 10-Amp at 250-Vac and 10- Amp at 30-Vdc. Each input can be user configured to one of the following features: 4. 7. 8. 9. Source 1 connected Source 2 connected ATS in test ATS not in automatic mode (Monitor Mode) General Alarm indication for failure to transfer, mechanical fault, or electrical fault. Engine Test Aborted Engine cool down in process Engine start contact status Emergency inhibit on 10. Load sequence Output used to signal select loads to disconnect prior to transfer and reconnect 0-120 seconds after. Loads are reconnected sequentially. 1 Selective load shed Output used to shed low priority loads when the load reaches a programmed threshold value. A load shed and load restore set point (measured in kw) are associated with this feature. 1 Load bank control Output to disconnect a load bank during an engine run test if a transfer to a source 2 generator is required. 1 Pre and/or post transfer signal - A pre and or post transfer time delay output adjustable from 0-120 seconds. One Form C auxiliary contact to indicate Source 1 position and one Form C contact to indicate source 2 position. The contacts shall be rated for 10-Amp, 1/3-Horsepower at 250- Vac and 10-Amp at 30-Vdc. One Form C contact for Source 1 Available. The contacts shall be rated for 10-Amp, 1/3- Horsepower at 250-Vac and 10-Amp at 30-Vdc. One Form C contact for Source 2 Available. The contacts shall be rated for 10-Amp, 1/3- Horsepower at 250-Vac and 10-Amp at 30-Vdc. Data Logging Historical Data Storage to include: a. Engine Run Time 16496E-7 02/17/14
b. c. d. e. f. g. h. i. Source 1 Available time Source 2 Available time Source 1 Connected time Source 2 Connected time Source 1 Engine Run Time Source 2 Engine Run Time Load Energized Time Number of Transfers ATS MOLDED CASE WITH ATC 900 CONTROLLER Event Summary shall include up to 100 date and time stamped events. All metered values are logged for each event. Event summaries include: a. Transfer events b. Alarms c. Changes to the set points d. Changes to the time/date e. Resetting a historical counter f. Engine Run test Event Details shall include up to 350 date and time stamped events. All metered values are logged for each event. Event details include detailed sequence of operations of a transfer event. 4. Event recording shall capture 4 seconds of metered data, stored every 20 msec for certain events. The data is captured 2 seconds before and 2 seconds after the event. Oscillographic data for 10 events is stored and may be downloaded over US Events Include: a. Source unavailability actions that initiate a transfer sequence (Undervoltage, Overvoltage, etc.) b. Successful transfers (at the point of breaker/contactor closure) c.unsuccessful transfers (at the point of breaker/contactor failure to close or open) 08 OPTIONAL ACCESSORIES *Non-Automatic Control: Provide a 2-Position Selector Switch, maintained contact, marked: Automatic and Non-Automatic. The transfer switch shall be transferred by actuating a two position maintained selector switch labeled Source 1 and Source 2. A 30mm pilot light shall be provided labeled Not in Automatic. *Non-Automatic Control: Provide a 3-Position Selector Switch, maintained contact, marked: Automatic and Non-Automatic. The transfer switch shall be transferred by actuating a three position maintained selector switch labeled Source 1, Off and Source 2. A 30mm pilot light shall be provided labeled Not in Automatic. C. *Manual Retransfer Control: The ATS shall remain connected to the emergency source after the normal source becomes available until a momentary pushbutton contact closure signal is received to initiate the retransfer. Should a failure of the emergency source occur while waiting for the manual return, the re-transfer proceeds automatically. D. *Device panel mounted Preferred Source Selector switch * Note to Spec. Writer Optional 16496E-8 02/17/14
E. F. G. H. I. J. K. ATS MOLDED CASE WITH ATC 900 CONTROLLER *Device panel mounted Source 2 Inhibit keyed switch with 30mm white pilot light indicating inhibit status. *Device panel mounted selector switch to initiate a load transfer to source This operation shall be failsafe to initiate an automatic retransfer upon loss of source 2 power. *Communications Interface to be [Modbus RTU] [Modbus TCP/IP]. * Where indicated on the drawings, provide a [50KA] [80KA] [100KA] [200KA] surge protection device on source *Space heater with thermostat rated for 100 watts. *Integrated Load Metering The controller shall include integral load metering. When included, metered values shall be viewable from the controller LCD display. 4. 7. 8. 9. 10. 1 Source 1 Voltages (3Ф) Source 2 Voltages (3Ф) Load Voltages (3Ф) Source 1 Frequency Source 2 Frequency Load Frequency Load Currents (3Ф) Load kw Load kvar Load kva pf *Customer Metering Where indicated on the drawings, provide customer metering to include the following: Note to Spec. Writer: Select devices as required for item 09.K. Refer to section 16901 for detailed specification for metering as follows: Power Xpert Series (Paragraph 02A) Power Xpert Meter Series 2000 (Paragraph 0B) IQ-100 Series (Paragraph 0D) IQ 250/260 Series(Paragraph 02E) L. *Remote Annunciator and Controller: Monitor up to eight (8) automatic transfer switches. a. 7 touchscreen color display b. Mimic bus display for each transfer switch with indication of source availability, based on controller pickup and dropout settings, and switch position. * Note to Spec. Writer Optional 16496E-9 02/17/14
c. d. e. a. ATS MOLDED CASE WITH ATC 900 CONTROLLER Each mimic bus display shall be marked with the designation of the transfer switch monitored. Indication of switch in test mode,. Indication of failure of digital communication link. Control Functions Control functions shall be password protected and shall include: Initiate engine test. Initiate a failsafe transfer to source Initiate manual retransfer. Indicating Lights: Grouped for each transfer switch monitored. 4. Label each group, indicating transfer switch it monitors, location of switch, and identity of load it serves. Mounting: Flush, modular, steel cabinet, unless otherwise indicated. Communications capability to be compatible with ATS controller. M. *Three Source Transfer Control The ATC-900 controller shall include a Master/Slave functionality for use in configuring two independent transfer switches as a three source transfer system. Sequence of operations - In the event of a source 1 power failure the Master ATS controller shall send an engine start signal to the slave input on the Slave controller. The slave controller shall send an engine start signal to both generators. If a preferred generator is selected, the Slave controller will count down through the time delay for engine failure and remain on the preferred generator if it is available. If the preferred generator is not available at that time, the Slave ATS will transfer to the non-preferred generator. If none-preferred is selected, the Slave ATS will transfer to the first available generator. The unused generator will be shut down as soon as the Slave ATS is connected to a good source. * Note to Spec. Writer Optional 16496E-10 02/17/14
PART 3 ADDITIONAL REQUIREMENTS Note to Spec Writer: Select from the table below to fill in the data required for 0A Table 16496A-1 Transfer Switch Rating When Used With Rating When Ampere Rating Upstream Circuit Breaker Used With Upstream Fuses Suggested Breaker Rating 240V (ka) 480V (ka) 600V (ka) Maximum Fuse Rating Fuse Type 480V (ka) 100 100A 100 65 25 200 J, T 200 150 150A 100 65 25 400 J, T 200 225 225A 100 65 25 400 J, T 200 300 300A 100 65 25 400 J, T 200 400 400A 100 65 25 600 J, T 200 600 600A 100 65 (3pole) 25 1200 J, T 200 35 (4pole) 800 800A 65 50 (3pole) 25 1600 L 200 35 (4pole) 1000 1000A 65 50 (3pole) 35 (4pole) 25 1600 L 200 01 WITHSTAND AND CLOSING RATINGS The transfer switch shall have a specific breaker withstand and closing rating of KA at volts. PART 4 4.01 EXECUTION EXAMINATION 4.02 FACTORY TESTING The following standard factory tests shall be performed on the equipment provided under this section. All tests shall be in accordance with the latest version of UL and NEMA standards. 16496E-11 02/17/14
C. Insulation check to ensure the integrity of insulation and continuity of the entire system Visual inspection to ensure that the switch matches the specification requirements and to verify that the fit and finish meet quality standards 4. Mechanical tests to verify that the switch's power sections are free of mechanical hindrances Electrical tests to verify the complete electrical operation of the switch and to set up time delays and voltage sensing settings of the logic The manufacturer shall provide a certified copy of factory test reports. Transfer switch shall include a label indicating order number, catalog number and date 4.03 4.04 4.05 4.06 4.07 INSTALLATION The Contractors shall install all equipment per the manufacturer s recommendations and the contract drawings All necessary hardware to secure the assembly in place shall be provided by the contractor FIELD QUALITY CONTROL *Provide the services of a qualified factory-trained manufacturer s representative to assist the contractor in installation and start-up of the equipment specified under this section for a period of working days. The manufacturer s representative shall provide technical direction and assistance to the contractor in general assembly of the equipment, connections and adjustments, and testing of the assembly and components contained therein. MANUFACTURER S CERTIFICATION *A qualified factory-trained manufacturer s representative shall certify in writing that the equipment has been installed, adjusted and tested in accordance with the manufacturer s recommendations. The Contractor shall provide a copy of the manufacturer s representative s certification. TRAINING *The [Contractor] OR [Manufacturer s qualified representative] shall conduct a training session for up to five (5) owner s representatives for normal workdays at a jobsite location determined by the owner. The training program shall consist of the instruction on the operation of the transfer switch and the major components within the assembly. FIELD SERVICE ORGANIZATION The manufacturer of the ATS shall also have a national service organization that is available throughout the contiguous United States and is available on call 24 hours a day, 365 days a year. * Note to Spec. Writer Optional 16496E-12 02/17/14