Failures of switches feeding transformers.
Failures of switches feeding transformers.
(OP)
Simultaneous electrical faults at three separate load interrupter (LI) switches at two separate substations.Voltage levels are 13.2KV -480V. They are high resistance grounded.. About 22 seconds later two other LI's faulted at same substation and opened the upstream feeder breaker. Four switches were in disrepair. The weather was damp . These switches have been replaced before. Can an arcing ground fault cause this?






RE: Failures of switches feeding transformers.
Time to review the whole set up.
Rafiq Bulsara
http://www.srengineersct.com
RE: Failures of switches feeding transformers.
RE: Failures of switches feeding transformers.
Alan
RE: Failures of switches feeding transformers.
RE: Failures of switches feeding transformers.
Dave Star!!!
RE: Failures of switches feeding transformers.
Lightning in the area?