SECTION 16346G METAL-CLAD EMERGENCY GENERATOR PARALLELING SWITCHGEAR MEDIUM VOLTAGE

Transcription

1 METAL-CLAD EMERGENCY GENERATOR PARALLELING PART 1 GENERAL 1.01 SCOPE A. The Contractor shall furnish and install, where indicated on the drawings, a complete standby power generation and load management power distribution and control system. B. The Emergency Power System consists of the following as applicable: 1. Generator sets 2. Generator Control Switchgear (with associated monitoring and distribution equipment) 3. Automatic Transfer Switches 4. Uninterruptible Power Supply Systems 5. Load Banks 6. Battery Systems C. The Emergency Power System Supplier (EPSS) shall be an authorized service provider for all components of the Emergency Power System (EPS). In order to assure maximum equipment uptime and best service response to the owner, the Emergency Power System Supplier shall be an factory-authorized dealer with complete Emergency Power System parts and service available on a 24 hour emergency basis within a mile radius of the project site. D. The Generator Control Switchgear specified in this section shall be a medium voltage metalclad construction. The Generator Control Switchgear shall be by the same manufacturer as the generator sets and furnished with the generator sets by the (EPSS) as a total system. The switchgear and circuit breakers utilized in the Generator Control Switchgear shall be products of the same manufacturer as the circuit breakers provided in the assemblies for the normal and emergency distribution as specified under other sections of the specifications. E. The Generator Control Switchgear specified includes overcurrent and protective devices. The Emergency Power System Supplier shall provide a Short Circuit and Coordination Study, performed by a qualified professional engineer, as specified in the contract documents and described in Part 3 below RELATED SECTIONS A. Section Metal-Enclosed Bus Medium Voltage B. Section Metal-Clad Switchgear (VacClad) Medium Voltage C. Section Automatic Transfer Switches Note to Spec. Writer Insert data in blanks 16346G-1 1/06

2 D. Section Power Monitoring and Control System E. Section Uninterruptible Power Supply System F. Section Generators G. Section Load Bank H. Section Battery Systems I. Section Short Circuit / Coordination Studies J. Section Arc Flash Study METAL-CLAD EMERGENCY GENERATOR PARALLELING 1.03 REFERENCES A. The metal-clad switchgear and all components shall be designed, manufactured and tested in accordance with the latest applicable standards of NEMA SG-4 and SG-5, and but not limited to, ANSI/IEEE B. The Emergency Power System shall meet or exceed the applicable requirements for the following standards as required: 1. UL 2. CSA 3. IEC 4. NFPA NFPA NFPA SUBMITTALS FOR REVIEW/APPROVAL A. The following information shall be submitted to the Engineer: 1. Master drawing index 2. Front view elevation 3. Floor plan 4. Top view 5. Single line diagram 6. Controls One-Line diagram 7. Nameplate schedule 8. Component list 9. Conduit entry/exit locations 10. Assembly ratings including: a. Short-circuit rating b. Voltage c. Continuous current Note to Spec. Writer Insert data in blanks 16346G-2 1/06

3 d. Basic impulse level for equipment over 600 volts 11. Major component ratings including: a. Voltage b. Continuous current c. Interrupting ratings 12. Breaker Schedule a. Cable terminal sizes. 13. Product data sheets. 14. Sequence of operation description B. Where applicable the following additional information shall be submitted to the Engineer: 1. Busway connection 2. Connection details between close-coupled assemblies 3. Composite floor plan of close-coupled assemblies 4. Key interlock scheme drawing and sequence of operations 5. Descriptive bulletins 1.05 SUBMITTALS FOR CONSTRUCTION A. The following information shall be submitted for record purposes: 1. Final as-built drawings and information for items listed in paragraph Wiring diagrams 3. Installation information including equipment anchorage provisions 4. Seismic certification as specified. B. 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 A. The manufacturer of the assembly shall be the manufacturer of the major components within the assembly. B. 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. D. Provide Seismic tested equipment as follows: 1. The equipment and major components shall be suitable for and certified to meet all applicable seismic requirements of the International Building Code (IBC) for zone 4 application. Guidelines for the installation consistent with these requirements shall be provided by the switchgear manufacturer and be based upon testing of representative Note to Spec. Writer - Optional 16346G-3 1/06

4 equipment. The test response spectrum shall be based upon a 5% minimum damping factor, IBC: a peak of 2.45g s ( Hz), and a ZPA of 0.98g s applied at the base of the equipment. The tests shall fully envelop this response spectrum for all equipment natural frequencies up to at least 35 Hz. -- OR 1. The equipment and major components shall be suitable for and certified to meet all applicable seismic requirements of the California Building Code (CBC) through zone 4 application. Guidelines for the installation consistent with these requirements shall be provided by the switchgear manufacturer and be based upon testing of representative equipment. The test response spectrum shall be based upon a 5% minimum damping factor, CBC: a peak of 2.15g s, and a ZPA of 0.86g s applied at the base of the equipment. The tests shall fully envelop this response spectrum for all equipment natural frequencies up to at least 35 Hz. -- OR The manufacturer may certify the equipment based on a detailed computer analysis of the entire assembly structure and its components. Guidelines for the installation consistent with these requirements shall be provided by the switchgear manufacturer and be based upon testing of representative equipment. The equipment manufacturer shall document the requirements necessary for proper seismic mounting of the equipment 2. The following minimum mounting and installation guidelines shall be met, unless specifically modified by the above referenced standards. a. 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 approved shake table tests used to verify the seismic design of the equipment. b. 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. c. The equipment manufacturer shall document the requirements necessary for proper seismic mounting of the equipment. Seismic qualification shall be considered achieved when the capability of the equipment, meets or exceeds the specified response spectra REGULATORY REQUIREMENTS 1.08 DELIVERY, STORAGE AND HANDLING A. 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. B. Shipping groups shall be designed to be shipped by truck, rail, or ship. Indoor groups shall be bolted to skids. Breakers and accessories shall be packaged and shipped separately. Note to Spec. Writer Select one 16346G-4 1/06

5 C. Switchgear shall be equipped to be handled by crane. Where cranes are not available, switchgear shall be suitable for skidding in place on rollers using jacks to raise and lower the groups. D. Switchgear being stored prior to installation shall be stored so as to maintain the equipment in a clean and dry condition. If stored outdoors, indoor gear shall be covered and heated, and outdoor gear shall be heated. E. Each switchgear assembly shall be split into shipping groups for handling as determined during the shop drawing phase jointly with the installing contractor. Shipping groups shall be designed to be shipped by truck, rail or ship. Shipping groups shall be bolted to skids, and covered with tarps for protection from weather. Accessories shall be packaged separately OPERATION AND MAINTENANCE MANUALS A. 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. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Caterpillar B. C. 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 RATINGS A. The switchgear described in this specification shall be designed for operation on a kv, three-phase, wire, [solidly grounded] [ungrounded] [impedance grounded] [high impedance grounded], [50][60]-hertz utility system. B. Each circuit breaker shall have the following ratings: Maximum Voltage kv BIL Rated kv Peak Continuous Current (5/15 kv) Amperes [1200] [2000] [3000] Short-Circuit Current at rated Maximum kv ka RMS SYM Rated Voltage Range Factor K Closing and Latching Capability ka Crest Maximum symmetrical Interrupting Note to Spec. Writer Insert data in blanks Note to Spec. Writer Select one 16346G-5 1/06

6 and Three Second Rating ka RMS SYM Nominal 3-Phase MVA Class MVA Rated Interrupting Time Five cycles Note to Spec. Writer: Fill in above data from table 16346G-1 Rated Maximum Voltage BIL Rated Short Circuit Current at Rated Maximum Voltage Table 16346G-1 Rated Voltage Range Factor Maximum Symmetrical Interrupting and 3-second Short Time Current Carrying Capability Closing and Latching Capability (Momentary) V I K K * I 2.7 * K * I kv RMS kv Peak ka RMS sym ka RMS sym ka Crest MVA Nominal 3-phase MVA Class 2.03 CONSTRUCTION A. The switchgear assembly shall consist of individual vertical sections housing various combinations of circuit breakers and auxiliaries, bolted to form a rigid metal-clad switchgear assembly. Metal side sheets shall provide grounded barriers between adjacent structures and solid removable metal barriers shall isolate the major primary sections of each circuit. [Two rear covers shall be furnished for each vertical section for circuit isolation and ease of handling.] [Hinged rear doors, complete with provisions for padlocking, shall be provided.] B. The stationary primary contacts shall be silver-plated and recessed within insulating tubes. A steel shutter shall automatically cover the stationary primary disconnecting contacts when the breaker is in the disconnected position or out of the cell. Provide rails to allow withdrawal of each circuit breaker for inspection and maintenance without the use of a separate lifting device. C. The assembly shall be provided with adequate lifting means. Note to Spec. Writer Insert data in blanks Note to Spec. Writer Select one 16346G-6 1/06

7 2.04 BUS A. The main bus shall be copper and have fluidized bed epoxy flame-retardant and trackresistant insulation. The bus supports between units shall be flame-retardant, trackresistant, glass polyester. The switchgear shall be constructed so that all buses, bus supports and connections shall withstand stresses that would be produced by currents equal to the momentary ratings of the circuit breakers. Main bus shall be rated [1200] [2000] [3000] [4000] amperes. Insulated copper main bus shall be provided and have provisions for future extension. All bus joints shall be plated, bolted and insulated with easily installed boots. The bus shall be braced to withstand fault currents equal to the close and latch rating of the breakers. The temperature rise of the bus and connections shall be in accordance with ANSI standards and documented by design tests. B. A copper ground bus shall extend the entire length of the switchgear. C. A [bare] [insulated] fully rated neutral bus shall extend the entire length of the switchgear WIRING/TERMINATIONS A. The switchgear manufacturer shall provide suitable terminal blocks for secondary wire terminations and a minimum of 10% spare terminals shall be provided. One control circuit cutout device shall be provided in each circuit breaker housing. Switchgear secondary wire shall be #14 AWG, type SIS rated 600 volt, 90 degrees C, furnished with wire markers at each termination. Wires shall terminate on terminal blocks with marker strips numbered in agreement with detailed connection diagrams. B. Incoming line and feeder cable lugs of the type and size indicated elsewhere shall be furnished. C. Where individual conductors cross switchgear shipping splits they shall be fitted with plugtogether connectors for reliable field assembly CIRCUIT BREAKERS A. The circuit breakers shall be horizontal drawout type, capable of being withdrawn on rails. The breakers shall be operated by a motor-charged stored energy spring mechanism, charged normally by a universal electric motor and in an emergency by a manual handle. The primary disconnecting contacts shall be silver-plated copper. B. Each circuit breaker shall contain three vacuum interrupters separately mounted in a selfcontained, self-aligning pole unit, which can be removed easily. The vacuum interrupter pole unit shall be mounted on glass polyester supports. A contact wear gap indicator for each vacuum interrupter, which requires no tools to indicate available contact life, shall be easily visible when the breaker is removed from its compartment. The current transfer from the vacuum interrupter moving stem to the breaker main conductor shall be a non-sliding design. The breaker front panel shall be removable when the breaker is withdrawn for ease of inspection and maintenance. Note to Spec. Writer Select one Note to Spec. Writer Optional 16346G-7 1/06

8 C. The secondary contacts shall be silver-plated and shall automatically engage in the breaker operating position, which can be manually engaged in the breaker test position. D. Interlocks shall be provided to prevent closing of a breaker between operating and test positions, to trip breakers upon insertion or removal from housing and to discharge stored energy mechanisms upon insertion or removal from the housing. The breaker shall be secured positively in the housing between and including the operating and test positions. E. The breakers shall be electrically operated by the following control voltages: [48-] [125-] Vdc charge/close/trip. Each breaker shall be complete with control switch and red and green indicating lights to indicate breaker contact position. F. DC control voltage shall be supplied with the Generator Control Switchgear including batteries, charger, and battery rack AUXILIARY DEVICES A. Ring type current transformers shall be furnished as indicated on the contract drawings. The thermal and mechanical ratings of the current transformers shall be coordinated with the circuit breakers. Their accuracy rating shall be equal to or higher than ANSI standard requirements. The standard location for the current transformers on the bus side and line side of the breaker units shall be front accessible to permit adding or changing current transformers without removing high-voltage insulation connections. Shorting terminal blocks shall be furnished on the secondary of all the current transformers. B. Voltage and control power transformers of the quantity and ratings indicated in the detail specification shall be supplied. Voltage transformers shall be mounted in drawout drawers contained in an enclosed auxiliary compartment. Control power transformers up to 15 kva, single-phase shall be mounted in drawout drawers. Rails shall be provided as applicable for each drawer to permit easy inspection, testing and fuse replacement. Shutters shall isolate primary bus stabs when drawers are withdrawn. C. A mechanical interlock shall be provided to require the secondary breaker to be open before the CPT drawer or CPT primary fuse drawer can be withdrawn ENCLOSURES A. The switchgear described in these specifications shall be indoor construction, with devices arranged as shown on contract drawings. -- OR -- A. The switchgear described in these specifications shall be weatherproof, aisle-less construction for outdoor service. Each shipping group shall be mounted upon an integral base frame with a weatherproof enclosure for assembly in the field into a complete metalenclosed switchgear assembly with a weatherproof door provided on the breaker drawout side of each vertical section. Note to Spec. Writer Select one 16346G-8 1/06

9 -- OR -- A. The switchgear described in these specifications shall be weatherproof, sheltered-aisle construction for outdoor service. Each shipping group shall be mounted upon an integral base frame with a weatherproof enclosure assembly in the field into a complete metal enclosed switchgear assembly. The enclosure shall be extended on the breaker drawout side to form an operating and/or maintenance aisle large enough to permit interchange of circuit breakers. A weatherproof door with an inside quick release latch mechanism shall be located at each end of the inside even when locked on the outside. Interior lights, light switches and duplex ground fault receptacles shall be furnished in the aisle. B. Where outdoor switchgear is shown, each vertical section of outdoor switchgear shall be provided with space heaters. Tubular type heaters operated at half voltage for long life shall be supplied. 500-volt or 250-volt rated heaters shall be used at 240 or 120 volts, respectively. Power for space heaters shall be furnished [as indicated on the drawings] [from a control power transformer mounted in the switchgear]. C. Heaters shall be wired to provide temporary heating during storage NAMEPLATES A. Engraved nameplates, mounted on the face of the assembly, shall be furnished for all main and feeder circuits as indicated on the drawings. Nameplates shall be laminated plastic, black characters on white background. Characters shall be 3/16-inch high, minimum. B. Furnish master nameplate for each switchgear lineup giving information in accordance with IEEE Std C , section Circuit nameplates shall be provided with circuit designations as shown on purchaser s single-line diagrams. C. Control components mounted within the assembly, such as fuse blocks, relays, pushbuttons, switches, etc., shall be suitably marked for identification corresponding to appropriate designations on manufacturer s wiring diagrams FINISH A. The finish shall consist of a coat of gray (ANSI-61), thermosetting, polyester powder paint applied electrostatically to pre-cleaned and phosphatized steel and aluminum for internal and external parts. The coating shall have corrosion resistance of 600 hours to 5% salt spray ACCESSORIES A. The switchgear manufacturer shall furnish accessories for test, inspection, maintenance, and operation, including: 1. One Maintenance tool for manually charging the breaker closing spring and manually opening the shutter 2. One Levering crank for moving the breaker between test and connected positions 3. One Test jumper for electrically operating the breaker while out of its compartment Note to Spec. Writer Select one Note to Spec. Writer Optional 16346G-9 1/06

10 4. One Breaker lifting yoke used for attachment to breaker for lifting breaker on or off compartment rails, when applicable 5. One Set of rail extensions and rail clamps, when applicable 6. One Portable lifting device for lifting the breaker on or off the rails 7. One Ramp for rolling breaker mounted in lower compartment directly onto the floor 8. One Test cabinet for testing electrically operated breakers outside housing 9. One Dockable transport dolly for moving breaker about outside its compartment 10. One Electrical levering device EMERGENCY POWER SYSTEM (EPS) AUTOMATION & CONTROLS A. The automation and control system shall facilitate overall EPS operation including automatic standby operation, monitoring and control of the generator sets including start/stop, alarm/fault monitoring, synchronizing, generator kw load sharing, generator kvar load sharing, generator loading/unloading, load shed/add, and protective relaying. B. The EPS Automation and Controls shall utilize true redundant, distributed processing technology to maximize system reliability and fault tolerance. The distributed processing system shall include a separate automation processor for each power source, and a separate automation processor dedicated to each touchscreen Human/Machine Interface (HMI) operation. C. The EPS Automation and Controls shall be by the same manufacturer as the switchgear and generator sets. It shall be furnished with the generator sets by the Emergency Power System Supplier as a total coordinated and integrated system. *Note to Spec. Writer: Choose one of the HMI Options below, depending on usage of PowerLynx 1000, PowerLynx 2000, and PowerLynx 3000 product 2.13 HMI HUMAN/MACHINE INTERFACE [POWERLYNX 1000 HMI] A. EPS Automation interface shall be via a touchscreen with the following characteristics: 1. Monochrome display capable of displaying both text and graphics. a. 6 diagonal for EPS s with two (2) Generator Sets. b. 10 diagonal for EPS s with three (3) or more Generator Sets. 2. Resistive touchscreen interface. a. The display shall support a minimum resolution of 320x240 pixels in 6 diagonal size, black and white. b. The display shall support a minimum resolution of 640x480 pixels in 10 diagonal size, black and white. -- OR- Note to Spec. Writer Optional Note to Spec. Writer Select one 16346G-10 1/06

11 2.13 HMI HUMAN/MACHINE INTERFACE [POWERLYNX 2000 HMI] A. EPS Automation interface shall be via a touchscreen with the following characteristics: 1. Color, 12 (diagonal) LCD TFT display capable of displaying both text and graphics. 2. Resistive touchscreen interface. a. The display shall support a minimum resolution of 800x600 pixels, 256 displayable colors. -- OR HMI HUMAN/MACHINE INTERFACE [POWERLYNX 3000 HMI] A. EPS interface shall be via a touchscreen with the following characteristics: 1. Color, 15 inch (diagonal) TFT LCD industrial display capable of displaying both text and graphics. 2. The touch screen shall be clear glass, with light transmission of 95% or better, furnished with a Surface Acoustic Wave touch interface. 3. The display shall support a minimum resolution of 1024 x 768 pixels, 16 million displayable colors, 24~60kHZ horizontal scan rate, 56-75kHZ refresh rate. 4. An EPS Touch Screen Processor shall be provided and shall provide the following additional features: a. System Report Generation 1. The EPS Automation shall be capable of displaying and printing the following reports: i. System Settings Report ii. Generator Settings Report iii. Plant Test Report including all current operational parameters iv. NFPA compliant JCAHO report v. Alarm Summary Report vi. Provide a printer for local printing of system reports. vii. Integral Alarm and Event Recording viii. Integral Short Term Trending ix. Alarm Log shall be exportable to floppy disk drive. b. The EPS Touchscreen Processor shall operate with the following minimum characteristics: 1. Minimum environmental requirements: temperature 0-55 deg. C, Protection Class IP20, Shock resistant up to 5Gs. 2. Industrial Processor shall have 24 Vdc power supply fed from best source system. Note to Spec. Writer Select one Note to Spec. Writer - Optional Note to Spec. Writer Optional 16346G-11 1/06

12 2.14 HMI SCREEN LISTING A. The EPS Automation shall provide the following screens. The screens shall provide all of the information, metering, control, annunciations settings and indications listed below: 1. Main Menu Screen with a complete listing of major screens. 2. System Overview Screen with a dynamic graphic display of the electrical one line. 3. System Control Screen. 4. System Metering Screen with graphical presentation of all functions. 5. System Settings Screen. 6. Generator Control Screen for each generator 7. Generator Metering Screen for each generator with graphical presentation of all functions specified. 8. Generator Settings Screen. 9. Generator Demand Priority Control and Status Screen. 10. Generator Load Shed Control Screen. 11. Engine Monitoring (Engine Meter/Gauge) Screen for each generator that shall contain a graphical representation of all of the engine gauges and data specified. a. Generator Engine Air / Cool Screen b. Generator Engine Oil / Fuel Screen 12. Annunciator Menu Screen a. System Annunciation Screen that shall contain all of the Status, Lamp Test and Alarm points specified. b. Generator Annunciator Screen for each generator that shall contain: Status, Lamp Test, Pre-Alarms and Shutdown faults specified. 13. Report Menu Screen a. Generator Settings Report Screen b. Plant Test Settings Report Screen 14. Password Entry screen that shall contain a numeric keypad for password entry. 15. Alarm Summary Screen that shall contain a time/date stamped System Alarm Summary. *Note to Spec. Writer: The following ATS Overview screen only applies to Powerlynx 2000 or 3000 and requires CAT ATS (configured with communications and correct options). 16. ATS Overview (monitoring) screen with graphical display on the position ATS switch. *Note to Spec. Writer: The following ATS Settings and Control screens only apply to Powerlynx 3000 and requires CAT ATS (configured with communications and correct options). 17. ATS Settings Screen with remote adjustment of typical switch settings. 18. ATS Control Screen with status of a specific switch indicating position, and electrical values. Also test control switch position indication and control of the switch remotely, and pushbuttons to control transfer to emergency and normal power G-12 1/06

13 *Note to Spec. Writer: The additional HMI Screens listed below apply to PowerLynx 3000 only 19. System Trend Screen that shall contain trending information described below. 20. Generator Trending Screen that shall contain trending information described below. 21. Engine Historical Trending Screen that shall contain trending information described below under Long Term Historical Trending EMERGENCY POWER SYSTEM (EPS) AUTOMATION FEATURES A. The EPS Automation and Controls shall consist of the automation hardware and software required for the control of the Engine-Generator plant and associated Transfer Switches and Distribution Circuit Breakers, as shown on the Contract drawings. The System shall include all Processors, HMI (Human / Machine Interface) Touchscreens, Power Transducers, Supervisory Network and all ancillary control equipment within the Generator Control Switchgear necessary to automatically execute the specified Functional Sequence of Operations. B. The EPS Automation shall be provided with an HMI consisting of a Touchscreen display. 1. The HMI shall provide all metering, status, monitoring, and control information to the operator. 2. The HMI shall serve only as an Operator Interface. The EPS must continue to function normally with a complete HMI failure. C. The EPS Automation and Controls shall be designed to eliminate single points of failure. 1. For redundancy, multiple automation processors shall be utilized. 2. At a minimum, the EPS Automation shall utilize a separate automation processor for each generator power source, and each HMI. 3. EPS Control systems utilizing a single automation processor are not acceptable. D. For redundancy, all Master Control automation functions shall be capable of being executed from any of multiple distributed processors. If the automation processor executing Master Control automation functions should fail, the next available automation processor shall automatically assume control of all Master Control automation functions. The number of redundant processors for Master Control automation functions shall be equal to the number of generators in the system. The redundant automation processors shall each consist of a fully redundant power supply and CPU. Transfer of Master Control functions to a redundant processor shall be bumpless. The Master Control automation functions shall include: 1. Automatic start of the generator plant when a run request is received 2. First-up and dead-bus control logic 3. Automatic synchronizing and paralleling of the generator plant 4. Automatic generator load and VAR sharing controls 5. Automatic Generator Demand Priority control logic 6. Automatic Load Shed / Add control logic Note to Spec. Writer - Optional 16346G-13 1/06

14 E. An I/O rack with I/O cards or a distributed I/O block shall be provided for all required Master Control I/O including Load Shed relay outputs, annunciation inputs and outputs, etc. [A second (redundant) Master Control I/O rack with I/O cards (or a distributed I/O block) shall be provided with redundant I/O points for all Master Control I/O requirements.] F. A separate Load Shed distributed I/O block shall be provided for each group of up to (4) electrically operated distribution circuit breakers (as indicated on the drawings) to control the opening and closing of distribution circuit breakers when signaled by the Master Control Automatic Load Shed Control Logic and to monitor the open and closed status of distribution circuit breakers. [A second (redundant) Load Shed distributed I/O block shall be provided for each group of up to (4) distribution circuit breakers.] G. The EPS Automation and Controls shall be capable of surviving a fault of any one of its automation processors. The failure of any single Master Control, or any single generator power source automation processor shall only cause loss of automatic operation of a single generator. *Note to Spec. Writer: The following additional control network redundancy (Paragraph H) applies only to PowerLynx 2000 and 3000 Systems. H. To eliminate single points of failure, the EPS automation processors shall coordinate their control functions via a dedicated fully redundant supervisory network. The redundant supervisory network shall have a 1Mbs data rate or higher and shall be configured so that failure of the primary network shall result in the system operating on the secondary network without any loss of manual or automatic functionality. I. The EPS Automation control power shall be protected against single point of failure by the utilization of a 24 Vdc, Best Source DC system. 1. Each Engine battery and a Station Battery shall be connected to a common DC bus. 2. Each Engine battery and the Station Battery shall be furnished with a separate battery charger. 3. An 80amp diode and 40amp circuit breaker shall connect each battery to the common DC bus to protect the common DC bus from the catastrophic failure of any DC source. 4. All controls and protective relays shall be powered from this Best Source DC bus. J. The EPS Controls shall be provided with an Instant Auto Selector Switch. The Instant Auto Selector Switch shall shift the EPS to the fully automatic mode. This insures the EPS, even in the event of a touchscreen failure, can be returned to the fully automatic mode. K. Each Generator Circuit Breaker processor shall be furnished with a Power Transducer. The Power Transducer shall accept 3 phase Voltage and Current inputs from the associated source, and single phase Voltage input from the load side of the Circuit Breaker. The Power Transducer shall provide all critical power related data to the source processor at least once every 100ms. Note to Spec. Writer - Optional 16346G-14 1/06

15 L. The EPS Automation shall log all events and alarms with device, condition, and time/date stamp. M. Real Time Trending 1. The EPS Automation shall support real time trending. 2. Real Time Trending shall display the following: a. Load kw b. Individual Generator kw c. Individual Generator kvar *Note to Spec. Writer: The following additional trending parameters apply to PowerLynx 3000 Systems only. d. Individual Generator Voltage e. Individual Generator Amps per phase f. Individual Generator frequency g. Individual Engine RPM h. Individual Engine Battery Voltage i. Individual Engine Oil Pressure j. Individual Engine Water Temperature N. Each EPS Automation and Control component (nominal 24 Vdc) shall be rated to operate at 40 Vdc (typical for open circuited 24 Vdc chargers). To eliminate single points of failure, external overvoltage protection components are not acceptable. O. In the event of a failure of all EPS controls, the Generator frequency and voltage shall be automatically switched to manual, preset, potentiometer control EPS AUTOMATION & CONTROLS ENVIRONMENTAL SPECIFICATIONS A. The EPS Automation and Control System shall meet or exceed the following environmental requirements: 1. Control Power 16 to 40 Vdc (24 Vdc nominal) 2. Operating Temperature 0-55 C 3. Humidity 5 95% non-condensing 2.17 EPS METERING A. All metering functions shall be 0.5% accuracy or better. 1. The following meters shall be provided for the system bus, and each individual generator: a. Voltmeter with 4-position selector switch to select three phases of voltage. b. Ammeter with 4-position selector switch. c. Kilowatt meter d. Kilovar meter e. Frequency Meter f. Power Factor Meter 16346G-15 1/06

16 g. Synchroscope B. The following additional metering shall be provided for each Engine: 1. Engine RPM Meter 2. Engine Battery Voltage Meter 3. Engine Oil Pressure Gauge 4. Engine Coolant Temperature Gauge 5. Engine Running Hour Meter 6. Engine Start Counter 7. Percent Engine Load 8. Local Control Switch Position *Note to Spec. Writer: Include the following metering when using a Caterpillar, B series or higher, Diesel engine,adem II or III. 9. Atmospheric Pressure 10. Boost Pressure 11. System Battery Voltage 12. Left Turbo Inlet Pressure 13. Right Turbo Inlet Pressure 14. Engine Hour meter 15. Filtered Engine Oil Pressure 16. Engine Coolant Level Status 17. Overspeed Switch Status 18. Remote Emergency Stop Actuated status 19. Oil Filter Pressure Differential 20. Fuel Filter Pressure Differential 21. Engine coolant Temperature 22. Right Exhaust Temperature 23. Left Exhaust Temperature 24. Crankcase Air Pressure 25. Filtered Fuel Pressure 26. Right Air Filter Differential 27. Left Air Filter Differential 28. Fuel Consumption Rate -- OR - Note to Spec. Writer Select one 16346G-16 1/06

17 *Note to Spec. Writer: Include the following metering when using a Caterpillar, B series or higher, Natural Gas engine, ADEM II or III. 9. Oil Filter Pressure Differential 10. Gas Flow 11. Total Engine Hours 12. Unfiltered Oil Pressure 13. Coolant Pressure 14. Fuel Temperature 15. Air/Fuel Ratio 16. Inlet Air Pressure 17. Inlet Air Temperature 18. Inlet Air Flow 19. Individual Cylinder Ignition Timing 20. Individual Cylinder Temperature (where available) C. The following metering shall be provided for each distribution breaker: 1. Voltmeter with 4-position selector switch to select three phases of voltage. 2. Ammeter with 4-position selector switch. 3. Kilowatt meter 4. Kilovar meter 5. Frequency Meter 6. Power Factor Meter D. Additional Metering 1. Where indicated on the drawings, provide a separate customer metering compartment with front hinged door. 2. Furnish and install current transformers for each meter. Current transformers shall be wired to shorting-type terminal blocks. 3. Furnish and install [potential transformers including primary and secondary fuses with disconnecting means] [fused potential taps as the potential source] for metering as shown on the drawings. Note to Spec. Writer: See Section Microprocessor Based Metering for functional descriptions PROTECTIVE RELAYS Note to Spec. Writer Optional Note to Spec. Writer Select one 16346G-17 1/06

18 A. The switchgear manufacturer shall furnish and install, in the metal-clad switchgear, the quantity, type and rating of protection relays as indicated on the drawings and described hereafter in this specification. B. Protective Relaying shall be microprocessor, high reliability, as specified below. C. GENERATOR PROTECTIVE RELAYING 1. As a minimum, the following protective functions shall be provided for each Generator: a. Instantaneous/Time Overcurrent (50/51) Relay, 3-phase, percent adjustable, utilizing ANSI trip curves. b. Under/Over Voltage (27/59) Relay, 3-phase, percent adjustable, percent reset, with time delay. c. Over/Under Frequency (81 O/U) Relay, single phase, percent adjustable, percent reset, with time delay. d. Reverse Power (32) Relay, 3-phase, percent adjustable with time delay. e. Loss of Field (Reverse VAR, 40) Relay, 3-phase, percent adjustable with time delay. f. Differential Phase Fault (87G) Relay, 3-phase, percent adjustable with time delay. (Not available with the Basler BE1-GPS100) g. Microprocessor Engine Governor Load Sharing and Soft Loading Control (65). h. Automatic Synchronizer (15/25), adjustable sync window and sync window dwell time. i. Manual Paralleling Synch Check (25). j. Var/Power Factor Controller (90 PF). -- OR- 1.Each Generator Circuit Breaker shall be provided with a *[Multilin SR-489], [Schweitzer SEL 300G], [Basler BE1-GPS100], [Basler BE1-CDS220], [Discrete 50/51 with 87G], protective relay. 2. Provide a Neutral Grounding Resistor for the protection of Generator windings. This Neutral Grounding Resistor shall have the following features: a. Rated at 200 amps for 10 seconds. b. Ground Overcurrent trip protection (51G). D. DISTRIBUTION PROTECTIVE RELAYING 1. As a minimum, the following protective function shall be provided for each Distribution Circuit Breaker: a. Instantaneous/Time Overcurrent (50/51) Relay, 3-phase, percent adjustable, utilizing ANSI trip curves. b. Lock-out (86) Relay (Utility Grade), manual reset. -- OR Each Distribution Circuit Breaker shall be provided with a [Multilin MIF II], [Schweitzer SEL 551], [Basler BE1-851], [Siemens 7SJ602], protective relay. Note to Spec. Writer Select one Note to Spec. Writer Optional Note to Spec. Writer Select one 16346G-18 1/06

19 2. Lock-out (86) Relay (Utility Grade), manual reset. METAL-CLAD EMERGENCY GENERATOR PARALLELING 2.19 EPS ANNUNCIATION SYSTEM A. The EPS shall be provided with Annunciators to monitor and display critical status, fault, and shutdown information. Two (2) distinct Annunciator types shall be provided: 1. Generator Annunciator One (1) shall be provided for each generator. 2. System Annunciator One (1) shall be provided for each system. B. Annunciation shall comply with NFPA 110 requirements and shall conform to Instrument Society of America (ISA) F3A standards. The Annunciation System shall be provided with four (4) distinct types of annunciation points: 1. Status Points These annunciation points will show the status of critical system or generator set components. Status Annunciation points shall not sound the Annunciation System Horn. They shall not require acknowledgement. 2. Generator Pre-Alarm Points These annunciation points shall show fault conditions that could jeopardize the ability of the EPS to function properly without immediate attention. Generator Pre-Alarm Annunciation points shall sound the Annunciation System Horn. They shall require acknowledgement. Generator Pre-Alarm Annunciation Points shall reset automatically as the alarm condition is cleared. 3. Generator Shutdown Alarm Points - These annunciation points shall show fault conditions that have caused the shutdown of one (1) or more generator sets. Generator Shutdown Annunciation points shall sound the Annunciation System Horn. They shall require acknowledgement. Generator Shutdown Annunciation points shall cause the generator set to shutdown and the generator main to trip open. The generator main is then locked out until the cause of the shutdown is corrected, the Engine Control Switch is placed in Off/Reset, and then placed back in Auto or Manual operation. 4. EPS Alarm Points These annunciation points shall indicate system wide fault conditions. EPS Annunciation points shall sound the Annunciation System Horn. They shall require acknowledgement. C. The Annunciation System shall be equipped with a fast pulse horn (rated dba at two feet), a Horn Silence Push-button and an Acknowledge Push-button. Any Generator Pre- Alarm, Generator Shutdown Alarm, or EPS Alarm shall cause the Alarm Horn to sound until the Horn Silence button is depressed. Any subsequent alarms shall re-sound the horn. The display shall operate such that any alarm point shall flash until acknowledged. One press of the Acknowledge button shall return alarm points to steady on except the first in alarm, which shall remain flashing. A second press of the Acknowledge button shall return the first in alarm point to steady on. D. The following Annunciator Points shall be furnished for each generator set: a. Status Annunciation Points 1. Local Engine Control Switch Position 2. EPS Engine Control Switch Position 3. EPS Synchronization Selector Switch Position 4. Emergency Mode 5. Generator Circuit Breaker Open/Closed 16346G-19 1/06

20 6. Engine Running/Stopped b. Pre-Alarm Annunciation Points 1. High Coolant Temperature 2. Low Oil Pressure 3. Low Coolant Temperature 4. Engine Battery Low Voltage 5. Engine Battery High Voltage 6. Battery Charger Failure 7. Engine Low Fuel [Applies to Diesel only] 8. Generator Failed to Synchronize 9. Local Engine Control Switch not in Auto 10. EPS Engine Control Switch not in Auto 11. EPS Synchronization Selector Switch not in Auto 12. Ground Fault Alarm 13. Communications Module Alarm 14. Rupture Basin Alarm [Applies to Diesel only] 15. Synchronizer Block Fault 16. Low Controller Battery c. Shutdown Alarm Points 1. Engine Overcrank 2. Engine Overspeed 3. Engine Low Oil Pressure 4. Engine High Coolant Temp 5. Engine Low Coolant Level 6. Engine Remote Emergency Shutdown 7. Generator Circuit Breaker Tripped 8. Generator Loss of Field 9. Generator Reverse Power 10. Generator Undervoltage 11. Generator Over voltage 12. Generator Under frequency 13. Generator Over frequency 14. Emergency Stop 15. Ground Fault 16. Critical Low Fuel Shutdown [Applies to Diesel only] 17. Hi Winding Temperature Trip E. The following Annunciator Points shall be furnished for each EPS: a. Status Annunciation Points 1. Engine Status (1 for each Engine) 2. Engine Priority (1 for each Engine) 3. Master Mode Selector Switch position 16346G-20 1/06

21 4. EPS Test Switch Position 5. Load Shed Enabled 6. Load Shed Active 7. Load Shed Override 8. Gen Demand Priority Enabled 9. Gen Demand Priority Active b. EPS Alarm Points 1. System in Emergency Mode 2. System not in Auto 3. Load Shed Override 4. Generator Bus Underfrequency 5. Master Shutdown 6. Controller Fault 7. Low Controller Battery 8. System Battery Charger Fault METAL-CLAD EMERGENCY GENERATOR PARALLELING 2.20 EPS (CONTROL, SYNCHRONIZER, POWER TRANSDUCER AND PROTECTIVE) SETTINGS A. EPS Setting changes and adjustments shall be password protected and easily adjustable in selectable increments. 1. System Settings 2. Generator Settings 3. Generator Demand and Load Shed Settings 2.21 FUNCTIONAL SEQUENCES OF OPERATION A. The EPS Automation shall be provided with the following Modes of Operation: 1. Automatic/Standby Mode a. The automatic transfer switches are in the normal position serving utility power to the loads. b. The generator mains are open. c. The automation is standing by to act in response to a run request from associated Automatic Transfer Switches. 2. Emergency Mode a. Automatic Transfer Switch Run Request 1. Automatic transfer switches send system a run request. 2. All available generators are started. 3. The first generator up to voltage and frequency is closed to the bus. 4. Unsheddable loads and Load Shed Priority 1 loads are powered in less than 10 seconds. 5. The remaining generators are synchronized and paralleled to the bus as they come up to voltage and frequency. 6. As additional generators are paralleled to the emergency bus, Load Shed Priority levels are added, powering their associated loads G-21 1/06

22 7. The system is now in Emergency Mode. b. Exit from Emergency Mode 1. Automatic transfer switches sense the utility source is within acceptable operational tolerances for a time duration set at the automatic transfer switch. 2. As each automatic transfer switch transfers back to utility power, it removes it s run request from the generator plant. 3. When the last automatic transfer switch has retransferred to the utility and all run requests have been removed from the generator plant, all generator main circuit breakers shall opened. 4. The generators are allowed to run for their programmed cool down period. 5. The system is now back in Automatic/Standby Mode. 3. No Load Test Mode a. Entrance into No Load Test Mode 1. The No Load Test Switch is placed in the ON position. 2. All available generators are started. 3. The first generator up to voltage and frequency is closed to the bus. 4. The remaining generators are synchronized and paralleled to the bus as they come up to voltage and frequency. 5. The system is now in No Load Test Mode. b. Exit from No Load Test Mode 1. The No Load Test Switch is placed in the OFF position. 2. All generator breakers are opened. 3. The generators are allowed to run for their programmed cool down period. 4. The system is now back in Automatic/Standby Mode. 4. Utility Fail Test Mode a. Entrance into Utility Fail Test Mode 1. The Utility Fail Test Switch is placed in the ON position. 2. A dry contact is sent to each ATS, which simulates a loss of utility within the ATS controls. 3. The system enters into Emergency Mode as described in the Emergency Mode sequence above. b. Exit from Utility Fail Test Mode 1. The Utility Fail Test Switch is placed in the OFF position. 2. A dry contact is removed from each ATS, which simulates the return of utility within the ATS controls. 3. The system exits into Emergency Mode as described in the Emergency Mode sequence above. B. When the Generator Sets are carrying the facility load, the EPS Automation shall support two (2) sub-modes: Load Shed/Load Add, and Generator Demand Priority. 1. Load Shed Control a. The System Controls shall include a Load Shed Control function to control the loads served by the generator plant G-22 1/06

23 b. The Load Shed Control shall have one Essential Load Shed Priority Level for each generator in the system plus one Non-Essential Load Shed Priority Level (which is always shed in the Emergency Mode of operation). c. The Load Shed Control shall control each of the distribution circuit breakers that are shown on the drawings. Distribution circuit breakers to be controlled shall be electrically operated. Each electrically operated distribution circuit breaker shall be field selectable to be assigned to any of the available Load Shed Priority Levels. 1. Provide the following controls for each Essential Load Shed Priority Level i. Shed Delay Timer, adjustable from 0 to 1024 seconds ii. Add Delay Timer, adjustable from 0 to 1024 seconds iii. Load Shed Override Selector (shed/auto//add) iv. Status indicators to show whether the Priority Level is Added or Shed 2. Provide the following controls for each Non-Essential Load Shed Priority i. Load Shed Override Selector (shed/auto//add) ii. Status indicators to show whether the Priority Level is Added or Shed 3. Additionally, the Load Shed Controls shall have: i. Load Shed Control Switch (On/Off) ii. User-settable Load Shed % (as a function of on-line generator capacity) iii. User-settable Load Shed Time Delay iv. User-settable Load Add % (as a function of on-line generator capacity) v. User-settable Load Add Time Delay vi. User-settable Bus Under frequency Set point vii. User-settable Bus Under frequency time delay viii. Bus Under frequency Reset Pushbutton ix. Bus Under frequency indicator 4. Conditional Load Shed: Upon entrance into Emergency Mode of operation, the Load Shed Control shall shed all Essential and Non-Essential loads. As generators come to the bus, Essential Priority Level loads shall be added conditionally based on the number of generators on line. When the first generator comes to the bus, Priority Level 1 loads shall be added; Second generator, priority 2, etc. After a time delay that allows all operational generators to come to the bus, Load Shed Mode shall shift to Load Sensitive Mode. 5. Load Sensitive Load Shed After all generators have been given sufficient time to come to the bus, load shed shall shift to Load Sensitive mode. The system shall compare current generator on-line capacity (in kw) to current load requirements. If surplus capacity is greater than the calculated Load Add setpoint, after the Load Add Time Delay the next Load Shed Priority shall be added. This calculation shall continue until all Sheddable Loads are added, or until surplus capacity is less than the calculated Load Add setpoint. If surplus capacity is less than the calculated Load Shed setpoint, after the Load Shed Time Delay the next Load Shed Priority shall be shed. This calculation shall continue until all Sheddable Loads are shed, or until surplus capacity is greater than the calculated Load Shed setpoint. The Load Shed Control, in its automatic shedding and adding of loads, shall not override any manual load shed/add operation G-23 1/06