smoothops10
Member
- Location
- FL
- Occupation
- EE
Does anyone know of any issues with performing a megger test on a spliced feeder to test integrity of both the splice and conductors? 600V, 2000ft, 600kcmil feeder.
Megger Test
- Thread starter smoothops10
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ATSman
ATSman
- Location
- San Francisco Bay Area
- Occupation
- Electrical Engineer/ Electrical Testing & Controls
That's a relatively long run but should not be a problem. Make sure all ends are isolated from the equipment and ground the conductors before and after the tests. because of the capacitance build up.
Test at 1 KV for 1 minute. Hopefully you will get several meggohms.
The old Westinghouse rule of thumb is 1 meggohm per 1 KV system voltage (minimum.)
Test at 1 KV for 1 minute. Hopefully you will get several meggohms.
The old Westinghouse rule of thumb is 1 meggohm per 1 KV system voltage (minimum.)
ptonsparky
Tom
- Occupation
- EC - retired
What are you testing it to?
Is it direct bury? Free air?
Is it direct bury? Free air?
big john
Senior Member
- Location
- Portland, ME
Is this in a metal raceway? PVC? Direct burial?
To perform the test properly, connect together and ground all the conductors that share a raceway with the conductor under test.
I agree with ATS apply 1kV for 60 seconds. The NETA minimum is 2MΩ for an in-service cable.
To perform the test properly, connect together and ground all the conductors that share a raceway with the conductor under test.
I agree with ATS apply 1kV for 60 seconds. The NETA minimum is 2MΩ for an in-service cable.
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