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Thank you for your feedback. After further review and discussion with generator application engineer, I found out that they grounded all the CTs secondary winding S1. So, I was able to convince him to allow me to change neutral CTs wiring by using three S1 wires connected to relay SR889 per...

Hi All, I need some help. I have a genset that has a differential protection scheme as per attached one line. We have a set of CTs on the bus side with Ansi or American style current transformers, and a second set of CTs that are IEC or European Bar style CT. In an ideal situation, two sets...

Hi All, The genset EMCP displayed a negative KVARS when first compressor turned on. EMCP would shut down the genset when second compressor turned on. So, I decided to beef up the Reactive power set point from 10% to 30% on EMCP pe generator capability curve. We tested it again, and the...

Sorry, I meant 1500KW or 1875KVA step down transformer.

There was only one genset with rating 2.5KW with unity pf 1.0 or 3125KVA with pf 0.8. No grid power Please see attached picture when one compressor was running. As they turned on the second compressor toward the end, EMCP tripped genset. Is it normal to get a negative KVAR on first compressor...

Hi All, I have a question. We have a 2.5MW, 13.8KV genset to provide power to two compressors. Each compressor is rated for 600HP, 460V. There is a 1500KW step down transformer between genset and compressors. The genset started up and provided power to first compressor without any issue or...

Sorry, I didn't do a good job on stating the overall system. Let me summarize it one more time. There are two gensets tie to common bus of switchgear breaker and the other side of breaker stab connects to medium voltage VFD to control the 5000hp motor and pump. In normal operation, we start...

Hi All, I would like to get your input on this topic. We had two gensets were running in paralleling to provide about 4MW, 13.8KV to 5000hp motor and pump. While the system was running, the switchgear breaker got tripped for fault current on Phase C when I reviewed the Event file from genset...