According to an IEEE paper that compares ANSI and IEC BIL test procedure, it was stated that "The IEC impulse voltage test requires that 15 impulses of a standard 1.2/50us voltage wave be repeated with a maximum of two disruptive discharges across self-restoring insulation and no disruptive...
Hi all,
I have an outdoor metal-clad switchgear application at 34.5kV, 2500A that required the use of hollow round copper bus. Outdoor condition is hot and high humidity.
A 1/4 x 6'' flat bar rated 2700 A @ 65 deg C rise was the guideline according to this Copper.org website...
Hi all
I had a request to supply VT drawer (for an old mining site) connected as open delta, 13.8kV/120V, operating at 25Hz. Accuracy required is 0.3Z with thermal burden 400VA ea.
My questions:
1) Is it possible/feasible to derate a normal 60Hz VT
for use in my application? If yes, is...
Hi,
I'm sourcing for a current unbalance
relay for capacitor bank protection.
It's a 3-phase relay and input 5A.
It has to be single function relay and
inexpensive.
If you guys have any recommendation
on manufacturers, pls let me know.
Thanks a lot.
TK
