Hi Sir Julius. On an 11kV switchboard is it possible to configure the protection relay of an outgoing feeder as an Incomer? The intention is to supply temporary power from a generator to the 11kV switchboard using one of the spare outgoing feeders due to the permanent incoming power is not yet ready. Kindly explain how to configure the relay of the outgoing feeder. There is no potential transformer on the outgoing feeder but only CTs. Is there a need to change the connections on the CTs of the outgoing feeder to correct the polarity as incomer or this can be done thru configuration of relay?
Hello sir, I have a 11kv switchgear, one of the cabinet is for earthing transformer , Do we need to close it on the busbars during normal operating? Also we have challenge with the relay settings, the inrush current coming from the feeders circuits which is tripping the breaker and giving under voltage on the relay screen. Please advise on this . Much appreciated
I can't give you a proper advice since I'm not familiar with the entire power system on how it works. It has to be consulted to the people who commissioned the system if they are still available.
Hi Sir Julius. On an 11kV switchboard is it possible to configure the protection relay of an outgoing feeder as an Incomer? The intention is to supply temporary power from a generator to the 11kV switchboard using one of the spare outgoing feeders due to the permanent incoming power is not yet ready. Kindly explain how to configure the relay of the outgoing feeder. There is no potential transformer on the outgoing feeder but only CTs. Is there a need to change the connections on the CTs of the outgoing feeder to correct the polarity as incomer or this can be done thru configuration of relay?
Hello sir, I have a 11kv switchgear, one of the cabinet is for earthing transformer , Do we need to close it on the busbars during normal operating? Also we have challenge with the relay settings, the inrush current coming from the feeders circuits which is tripping the breaker and giving under voltage on the relay screen. Please advise on this . Much appreciated
I can't give you a proper advice since I'm not familiar with the entire power system on how it works. It has to be consulted to the people who commissioned the system if they are still available.