Recent Articles
Circuit Breaker Timing Test: The Real Health Check of a Circuit Breaker
The circuit breaker timing test is performed to verify the mechanical performance of the circuit breaker by measuring the opening, closing and contact synchronization time. Since, the protection system relays send trip command in milliseconds, if the circuit breaker opening time is delayed, the fault clearing time increases. …
Temperature Rise Test of Transformer – Why Electrical Tests Alone Are Not Enough
The temperature rise test verifies the transformer’s thermal performance under rated load conditions. A transformer can pass all electrical test and still fail prematurely if its thermal design is weak. The life of the transformer depends on the insulation temperature. Every 6-8 degree rise in operating temperature beyond …
