andiant
Electrical
- Nov 16, 2005
- 1
Have a new wye 13.2kv genset with neutral lead bonded to ground on generator chassis along with frame ground. System is used for emergency backup and for peak shave during peak hours. All is well with building loads, but when peak shaving with utility there is 25 amps on the neutral and the 489 relay trips unit offline with ground current. Service coming in is 13.2kv delta (no neutral)stepping down to 4160 or 480 volt wye. Secondary of transformers do have neutral bond to ground. Do I see neutral grounding resistors or bonding neutral ground elsewhere coming in as a possible fix?