Current Unbalance Relay

[flyboyz]

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

 

[rbulsara]

Try

http://www.abb.com

http://www.basler.com

and search for schweitzer relays on the web.

 

[busbar]

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

 

[DanDel]

Time-Mark makes inexpensive relays that might be what you need.

http://www.time-mark.com/

 

[jbartos]

Suggestion: Visit

http://www.thiim.com/el/ftp/pia.pdf

http://www.cooperpower.com/Products/Protective/pro/capacitor.asp

etc. for more info

 

[dede61]

http://nokaincapacitors.fi

 

[jbartos]

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.

 

[144x]

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