Electrical Testing Question for Metal Clad Switchgear
Electrical Testing Question for Metal Clad Switchgear
(OP)
We have a NEW Metal Clad switchgear rated for 13.8kV.
We have made several eletrical tests and we have a concern on two specific tests.
Is a AC Hi-Pot and Insulation Power Factor tests a mandatory installation test requirement for the switchgear and associated power circuit breakers. Is an insulation resistance test taking both D.A.R. and P.I. enough?
NETA specifies Insulation Power Factor as an optional requirement.
I would like to know your experience for me to know when to decide to go for these tests. Thank you.
I'm a fan of this forum as well.
We have made several eletrical tests and we have a concern on two specific tests.
Is a AC Hi-Pot and Insulation Power Factor tests a mandatory installation test requirement for the switchgear and associated power circuit breakers. Is an insulation resistance test taking both D.A.R. and P.I. enough?
NETA specifies Insulation Power Factor as an optional requirement.
I would like to know your experience for me to know when to decide to go for these tests. Thank you.
I'm a fan of this forum as well.






RE: Electrical Testing Question for Metal Clad Switchgear
I was a NETA level IV tech, did NETA testing for 10 years and rarly did Pf tests on MV switchgear, only if the customer required it or if the hipot test results were questionable. A Pf test is a better test than AC hipot, more of a condition assesment measurment, so it might be good to have some baseline data for future reference.
RE: Electrical Testing Question for Metal Clad Switchgear
RE: Electrical Testing Question for Metal Clad Switchgear
The Overpotential (Hipot) test along with a preliminary Insulation Resistance (Megger) test (DAR and a 10-min test for PI is not necessary), and bus connection resistance tests, are recommended for the switchboard bus.
RE: Electrical Testing Question for Metal Clad Switchgear
What about a dielectric test on the vacuum bottles, is this going to be part of the standard test?
RE: Electrical Testing Question for Metal Clad Switchgear
RE: Electrical Testing Question for Metal Clad Switchgear
RE: Electrical Testing Question for Metal Clad Switchgear