EMCP 4.4 1G1U (Single Generator, Single Utility) Checklist {7002} Caterpillar

EMCP 4.4 1G1U (Single Generator, Single Utility) Checklist {7002}

Usage:

SR4 5CK

Electric Power Generation: SR4B (S/N: 5CK1-UP)

Introduction

This document is intended to be used as reference to aid in the commissioning of a generator set with the 1G1U feature. It is not intended to be a complete system checklist. Use the Genset Commissioning Checklist for the complete package as well as this checklist. Refer to local requirements and installation for complete system requirements. Only qualified personnel shall perform this work. Use proper Personal Protective Equipment (PPE) when working at the installation. Verify that measuring equipment is within calibration and in proper operating order for the job required.

This checklist assumes that the control panel already has the required wiring and terminals installed either from the factory, or otherwise. Refer to LEXE1426, "EMCP 4.4 1G1U (Single Generator, Single Utility) Commissioning Guide" for more information at Cat^® Electronic Media Center.

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Safety Section

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Before servicing/performing maintenance on the machine, electrical power must be physically disconnected; battery plugs must be disconnected from the batteries, or the trailing cable must be unplugged, and warning tags and padlocks shall be applied by a certified electrician. Certified electricians shall perform or direct any electrical work, including any energized testing, repair work in controllers, motors, or other approved compartments, and shall insure that all compartments are properly closed and inspected prior to re-energization. All applicable lock out and tag out procedures must be followed.

Customer Information

Customer ____________________________________________________________________________________________________

Site Contact ________________________________________________________________________________

Location ____________________________________________________________________________________________________

Work Order # ________________________________________________________________________________

________________________________________________________________________________________________________________________

Technician ____________________________________________________________________________________________________

Hour Meter ____________________________________________________________________________________________________

PM Level ____________________________________________________________________________________________________

Engine Model ________________________________________________________________________________

Engine Serial # ________________________________________________________________________________

Checklist

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Table 1
Wiring
1. Generator Set Wiring
A. Bus Sensing	Yes	No	N/A
1. The voltage of the utility as seen by the EMCP is <= 600V L-L, or else a potential transformer is installed between the utility and the EMCP utility voltage sensing inputs
2. If the EMCP utility voltage sensing wires come from the same potential transformer that feed the transducer, the burden of the PTs is not exceeded
3. If the EMCP utility voltage sensing wires come from a potential transformer, that potential transformer is not adding an unintended phase shift
4. Generator bus sensing is moved from the output of the generator set circuit breaker to the utility side of the utility breaker (from the control panel bus sensing fuses to utility voltage sensing)
B. Utility Breaker Requirements	Yes	No	N/A
1. The utility breaker is able to close within 5 to 6 cycles, has the abilitytoelectrically open and close, and has Aux contacts (a and b)
2. The utility breaker has both a powered shunt (DC) and/or undervoltage trip
C. Utility Breaker Control	Yes	No	N/A
1. The utility breaker Aux contacts are wired between the EMCP Digital Inputs and the utility breaker
2. The utility UV trip, shunt close, and shunt trip signals are wired between the EMCP relays and the utility breaker
3. The utility CB Bell Alarm and Utility Relay signals are wired between the EMCP Digital Inputs and the utility breaker
4. The utility circuit breaker Close and Trip command outputs from the EMCP are wired to relays that can handle the current draw from the utility circuit breaker trip unit
D. Other	Yes	No	N/A
1. Utility Breaker Request (optional) – A control switch is wired between the EMCP Digital Inputs and the utility breaker
2. If connecting to a live system, the utility shunt trip is connected as the last step of the commissioning
Notes:

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Table 2
Wiring
2. Tranducer Wiring
Note: This section is intended for the Caterpillar supplied transducer, but may be useful for others.
A. Transducer Selection	Yes	No	N/A
1. The transducer calculates both kW and kVar
2. The transducer sends out both positive and negative values without requiring an additional signal
3. The output ranges are within the EMCP Analog Input ranges
B. Utility Side - Voltage Sensing	Yes	No	N/A
1. The transducer voltage input is within the transducer limit (for the Caterpillar supplied transducer, <=480V L-L, nominal), or else a potential transformer is installed
2. If the transducer voltage sensing wires come from the same potential transformer that feed the EMCP utility voltage sensing, the burden of the PTs is not exceeded
3. Appropriately sized wires are connected between the utility voltage sensing points (or from utility PTs) and the appropriate inputs of the transducer
4. Voltage sensing comes from the utility side of the utility breaker
C. Utility Side - Current Sensing	Yes	No	N/A
1. The utility sensing current transformers are sized appropriately to prevent saturation at full power and actual pf
2. Appropriately sized wires are connected between the utility current transformers and the appropriate inputs of the transducer
3. The secondary rating of the current transformers on the utility side of the utility breaker fall within the rating of the inputs on the transducer
D. Generator Set Side	Yes	No	N/A
1. The wiring to each EMCP Analog Input is shielded twisted cable, with a drain (connected at the EMCP end only)
2. The kW and kVAr signals are wired to separate EMCP Analog Inputs
E. Power	Yes	No	N/A
1. Transducer supply power is connected
Notes:

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Table 3
Programming
1. EMCP Programming	Yes	No	N/A
1. Ensure the EMCP is flashed with software that contains the 1G1U feature
2. The Utility Load Control set points (including Control Mode and mode-specific set points) are programmed
3. The Utility AC Monitor set points are programmed
4. The Utility protections (over/under Voltage/Frequency) set points are programmed
5. The Event Response Configurations are programmed
6. The Analog Inputs (kW/kVAr) are programmed
7. The Analog Input Data Range Max and Data Range Min values (Utility kW, kVAr) are programmed
8. The Digital Inputs (Request to Close Utility CB, Request to Trip Utility CB, Utility Breaker Aux A, Utility Breaker Aux B, Utility CB Bell Alarm - optional, Utility Relay - optional) are programmed
9. The Digital Outputs (Utility CB Close/Trip) are programmed
10. The Gen Load Control (for paralleling modes) set points are programmed
Notes:
2. Transducer Programming	Yes	No	N/A
1. If the transducer is not supplied from Caterpillar, all transducer set points are properly programmed
Notes:

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Table 4
Verification
1. System	Yes	No	N/A
1. Verify programming is correct for the site requirements
2. Independently measured Utility kW and kVAr reasonably match the values shown on the EMCP screens
3. Independently measured Utility voltage reasonably matches the value shown on the EMCP screen
4. Values across the breakers are verified in phase, and with proper phase rotation, during synchronization, but before closing
5. The Utility breaker request switch (optional) opens and closes the Utility breaker correctly
6. Actual generator and Utility breaker positions match the indication on the EMCP screen for both open and closed
7. All required paralleling modes operate as needed (Base, Open Transition, Closed Transition, Import, Export)
Notes: