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Current Unbalance Relay

Current Unbalance Relay

Current Unbalance Relay

(OP)
Hi,

I'm sourcing for a current unbalance
relay for capacitor bank protection.
It's a 3-phase relay and input 5A.
It has to be single function relay and
inexpensive.
If you guys have any recommendation
on manufacturers, pls let me know.

Thanks a lot.

TK

RE: Current Unbalance Relay


You may want to review IEEE Std C37.99 …Protection of Shunt Capacitor Banks
  

RE: Current Unbalance Relay

Suggestion: Reference:
IEEE Std 242-2001
 CHAPTER 6
6.4.2.4 Capacitor protection

 CHAPTER 12
12.5.5.2 Unbalanced current protection

Normally, individual capacitors may be protected by fuses.

RE: Current Unbalance Relay

ABB has SPAJ 160C which is specially designed for capacitor bank protection .it has many more functions available than mere unbalance potection.

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