Thanks wbd,
The purpose of this test is to check mecanical stress of the ground bus and switchgear assembly.It is a ANSI conformance test (type test) for metal-clad switchgear.A megger test of the assembly does not accomplish that. The current for this test must be rated short-time current for...
I have a question about the single phase test according to ANSI 37.55- 5.9.1.2 chapiter. My test will be make for 50kA short current, 2 sec. and for 130kA peak current, 10 cycles (60Hz).I like to know how to do this test? What about the electrical connection and ground bus size.My ground bus is...
