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Manual 37365A GCP-30 Series Packages - Genset Control

6. "AUTO" operation mode (press the "AUTO" button): Applying the automatic control inputs and the en-

gine start request can now carry out automatic starting with subsequent synchronization.

Check synchronization:

Disable the GCB from being able to close onto the two systems. Check the gene-

rator and the generator busbar rotating fields. Check the connect command with a zero voltmeter (deter-

mination of the phase angle) at the generator power circuit breaker (GCB)

. If several correct synchroniz-

ing pulses have been output, switch the operation mode to "STOP" and re-enable the GCB closing circuit

("Command: close GCB") with the engine in "STOP" mode.

7. If steps 1 through 6 have been carried out successfully, parallel operations may be commenced. It is rec-

ommended to start with a constant power/baseload operation (approx. 25 % of the generator rated power)

initially. While this operation is being carried out, the displayed measured values must be verified. Test

the GCB shutdown. Check the real power controller and if necessary the power factor controller for prop-

er operation. Enter various set point values and verify proper operation.

8. If the mains parallel operation performs in a satisfactory manner, the synchronization of the mains power

circuit breaker (MCB) must be checked:

A power failure in the system must be simulated or observed by the controller. During a mains parallel

operation, change the operation mode from AUTOMATIC to MANUAL. Open the MCB ("MCB ON"

LED will turn off). Press the AUTOMATIC mode button to return the controller back to the AUTOMAT-

IC operation mode.

Check the generator busbar and the mains rotating field.

Disable the MCB from being able to close onto

the two systems. Check the connect command with a zero voltmeter (determination of the phase angle) at

the MCB. If several correct synchronizing pulses have been output, switch the operation mode to "STOP"

and re-enable the GCB closing circuit ("Command: close MCB") with the engine in "STOP" mode.

9. Test the emergency power operation functions

NOTE

The MCB and GCB reply messages are processed as negative logic. When the breaker is open, the

breaker reply (terminal 4/54) input should be energized (12/24Vdc). When the breaker is closed, the cor-

responding breaker reply input is de-energized (0Vdc). The circuit breaker auxiliary contacts should be

configured as normally closed! The CB aux contacts should be configured as normally closed! Refer to

the description of the auxiliary and control inputs starting on page 10. It is vital that these replies be

nnected!

Electrical insulation between voltage supply and discrete control and feedback inputs:

By the use of corres-

ponding external wiring, the common reference point of the discrete inputs can be electrically isolated from the

supply voltage (0 V, terminal 2). This is necessary if the discrete inputs are not to be triggered with 24 Vdc and

electrical isolation of the control voltage (e. g. 220 Vdc, 220 Vac) from the supply voltage must be insured.

Woodward GCP-30 Series User Manual

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