Woodward GCP-30 Series User Manual

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 101/179
Independent Time-Overcurrent Monitoring
NOTE
All percentage values refer to a percentage of the generator rated power (Parameter 22; page 27).
Function: The GCP utilizes a two tier independent time-overcurrent monitoring with separate adjustable time
delays. The threshold values and delays can be selected so that the monitored current level is independent from
the tripping time. The level 2 overcurrent is used as a fast-triggering high-current stage for protection against
short circuits. The level 1 overcurrent reacts to overcurrent below level 2 but above permissible limits that are
present over a longer period of time.
I >>
(I )
I >
(I )
t
2
t
1
t [s]
I [%]
1
2
Figure 3-8: Characteristic of the time-overcurrent monitoring
Parameter 162
Gen.overcurrent
monitoring ON
Independent time-overcurrent monitoring ON/OFF
ON ................ Independent time-overcurrent monitoring of the generator is enabled.
The subsequent screens of this function are displayed.
OFF .............. Independent time-overcurrent monitoring of the generator is dis-
abled. The subsequent screens of this function are not displayed.
Parameter 163
Gen.overcurrent
limit 1 000%
Threshold value independent time-overcurrent limit 1 0 to 300 %
If the monitored generator current exceeds the configured percentage of the rated
generator current for at least the delay time configured in Parameter 164, an F3
class alarm
is issued.
Issuing of F3 class alarm
Parameter 164
Gen.overcurrent
delay 1 00.00s
Independent time-overcurrent, delay, limit 1 0.02 to 9.98 s
For the control unit to recognize that a time-overcurrent fault has occurred, the
threshold value configured in Parameter 163 must be exceeded without interruption
for t
his period of time.

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English