TROUBLESHOOTING USING DVR FAULT CODES - Continued
CORRECTIVE ACTION - Continued
Inspect wiring between TB1 and terminals A3-20, A3-22, and A3-24 of DVR per
FO-3 and FO-4.
If the problem exists with no load, replace DVR (WP 0041).
Verify the problem is resolved.
Dangerously high voltage can exist across current transformer (CT) output with engine running.
CT could explode if disconnected from load with engine running. Do not disconnect CT with
generator rotating. Failure to comply can cause serious injury or death to personnel.
The DVR detected a 0.4 per unit or greater leading reactive power for a time greater than the
value entered in reverse VAR trip time (parameter :20). This fault shuts down the DVR and
removes excitation from the field. This function is only active if parameter :21 is set to 2. This
function is inactive if parameter :22 is set to 1.
Reverse VAR (Shutdown Fault)
Verify current transformer CCCT and voltage inputs from PT2, PT3, and DVR
terminals 20, 22, and 24 are connected per FO-3 and FO-4.
Two connections reversed could cause this fault. Connect per schematic and
wiring diagram FO-4.
Retrieve and verify all DVR parameters (WP 0085). Record :04 (generator rated
current) and :05 (current transformer output at rated output current) values.
On EMCP set ENGINE CONTROL switch to MANUAL START.
Connect load at 25% to 50% of rated load. Use 0.8 power factor inductive load, if
On GSC measure current in phase B. Record value.