Cummins/Onan — Ground Fault Alarm Relay Test
Testing & diagnosis · Ground Fault Alarm Relay (Optional)
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DQAD, Cummins/Onan DQAE, Cummins/Onan DQAF, Cummins/Onan QSM11 engine
Procedure
- Verify that the N-G Fault Indicator on the GFR is not lit. If lit, it indicates that the bonding jumper circuit (neutral to ground) is open. If genset does not require bonding jumper, a bonding jumper
- Move the control switch to the Run position.
- Press the TEST switch on the ground fault relay.
- Verify that the control panel warning message is displayed and the Fault Indicator (>I) on the GFR is lit.
- Reset the control panel fault (this will also reset the ground fault relay).
Specs & values
- Time delay setting 0 to 1 second
- Current setting 5 to 1200 amperes
Full service-parts list: Cummins/Onan DQAD →, Cummins/Onan DQAE →, Cummins/Onan DQAF →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.