FEinTX
Electrical
- Jul 26, 2006
- 25
Hello,
We are building a wind farm with a 34.5 KV collection system. The contract calls for hi-pot testing prior to energization of all circuits. In addition to the hi-pot, the customer has recently decided to have the entire collection system tested by a reputable firm using Partial Discharge equipment/analysis.
Question (1): Is there any added value to doing the hi-pot test, or would this now be unnecessary?
I've been told that a PD test will catch everything that a hi-pot will, and more, but need to be sure before deciding to skip the hi-pot.
Question (2): Are there any potential risks to doing a 1.5X hi-pot test on brand-new cable?
I am aware that hi-potting can lead to premature failure on cable with early-stage water penetration, but I'm not sure if there are risks if the cable is newly laid.
Thanks for any clarification you can offer!
FEinTX
We are building a wind farm with a 34.5 KV collection system. The contract calls for hi-pot testing prior to energization of all circuits. In addition to the hi-pot, the customer has recently decided to have the entire collection system tested by a reputable firm using Partial Discharge equipment/analysis.
Question (1): Is there any added value to doing the hi-pot test, or would this now be unnecessary?
I've been told that a PD test will catch everything that a hi-pot will, and more, but need to be sure before deciding to skip the hi-pot.
Question (2): Are there any potential risks to doing a 1.5X hi-pot test on brand-new cable?
I am aware that hi-potting can lead to premature failure on cable with early-stage water penetration, but I'm not sure if there are risks if the cable is newly laid.
Thanks for any clarification you can offer!
FEinTX