

Vacuum Interrupter Technology
The continuing use of vacuum interrupter technology 1. Breaker Overview The structure of an outdoor vacuum circuit breaker (VCB) is...


how to Hi-pot Test
Hi-pot Test is a high voltage test that is used to check the integrity of insulation for high voltage equipment such as bus bars, cables,...


How to Tan Delta Method
Tan Delta is a a diagnostic test conducted on the insulation of cables and winding. It is used to measure the deterioration in the cable....


How to Live Tank circuit breaker
Live Tank circuit breakers are circuit breakers in which the interrupting chamber is at the line potential. The interrupting chamber...