VCB Contact Timing Test (11KV)

[shamimkhan]

Contact Timing test of VCB ( 11KV) was performed, timing results are as below :

Contact Timing Test:

Phase Closing Time Opening Time
L1 30.3 ms 22.3 ms
L2 30.5 ms 22.2 ms
L3 30.8 ms 22.2 ms

I need to know wheter or not these results are Okay? What is the limit ? Reference Standard??

[bmclean]

Best to look up the manufacture manual it should have open and close and close-open times in it as a general rule of thumb is <50ms for close is good <45ms for open is good and the close-open should be the combination of those two times.

[jwdrowe]

Contact Timing test of VCB ( 11KV) was performed, timing results are as below :

Contact Timing Test:

Phase Closing Time Opening Time
L1 30.3 ms 22.3 ms
L2 30.5 ms 22.2 ms
L3 30.8 ms 22.2 ms

I need to know wheter or not these results are Okay? What is the limit ? Reference Standard??

The manufacture manuals will tell you what the times should be, usually goes by cycles.