11kW Switchgear Testing

[polo78]

Hi guys,

Do either of you have a good spec for testing 11kV indoor switchgear?

I am extending an 6.6kV SB for our customer by adding a couple of CBs.

I was going to recommend the following tests but would welcome any comments and suggestions:

1. Ducter new bus connections
2. 5kV Megger
3. Primary and secondary injection tests

Was also considering Hi-pot but I’m not sure if that is really used anymore for MV switchgear?

 

[rbulsara]

Get NETA- ATS at

http://webstore.ansi.org/RecordDetail.aspx?sku=ANSI/NETA+ATS-2009

Rafiq Bulsara

http://www.srengineersct.com

 

[Zogzog]

Yep, NETA specs, which are now an ANSI standard. You don;t really need to list them all, just put "Tesing IAW ANSI/NETA ATS", the testing company will then have to do all of the required tests.

THere are a few optional tests in the specs so you may want to clarify if you want those done or not.

 

[EEIre]

If you are in an IEC country IEC 60694:Common specifications
for high-voltage switchgear and controlgear standards section lists the routine tests which included dielctric (high voltage) testing.

Primary and secondary current injection will verify the CT/protection relay scheme

 

[1stClassPro]

Primary and secondary current injection is the term you want to use for medium voltage testing

On medium voltage switchgear, ct testing is usually performed with the voltage method.