Manual 37278B GCP-30 Series - Genset Control
© Woodward Page 23/174
WARNING
If the value of the following parameter is changed, the values of the following parameters have to be
checked:
• Threshold mains overvoltage (Parameter 212)
• Thre
shold mains undervoltage (Parameter 214)
Parameter 20
mains volt.trans
secondary 000V
only B + X Packages
Secondary mains voltage transformer [1] 50 to 125 V; [4] 50 to 480 V
L This value corresponds to the secondary voltages of the PTs, which are di-
rectly connected to the control.
The secondary voltage is set here in V. This parameter is used to display the sec-
ondary voltages on the control unit screen.
Parameter 21
mains volt.trans
primary 00.000kV
only B + X Packages
Primary mains voltage transformer 0.050 to 65.000 kV
L This value corresponds to the primary voltages of the PTs.
The primary voltage is set here in kV. This parameter is used to display the primary
voltages on the control unit screen. In the case of measured voltages of 100 V
without a measurement transducer 00.100 kV must be set here, for 400 V =
00.400 kV.
Rated Voltage Values
Parameter 22
Gen.voltage
U set 000V
only B + X Packages
Generator setpoint voltage [1] 50 to 125 V; [4] 50- to 530 V
L This value corresponds to the secondary voltages of the PTs, which are di-
rectly connected to the control.
This value of the voltage specifies the set point of the generator voltage for no-load
and isolated operation. The proportional entry of the parameter "Start voltage V
controller" (Parameter 67) refers to this value.
Parameter 23
Rated voltage in
system 000V
only B + X Packages
Rated voltage [1] 50 to 125 V; [4] 50 to 480 V
The rated voltage (V
L-L
) is preset with this value.
The proportional entries of the following parameters refer to this value:
- Generator voltage monitoring
- Mains voltage monitoring
- Dead band voltage controller
- Synchronization dV max
- Dead bus GCB dV max
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