Today electronic circuits have a life-cycle of 36..72 months. But several electronic product segments like automotive or automation need availability of the circuits for 10 or even 20 years (for extensions and repair).
At my company we seek an early warning system to monitor our whole range of...
10 years ago I was with a CB manufacturer and I like to comment this matter. Both ANSI C37 and IEC56 are not very specific on this topic of CB condition after SC interuption.
Therefor manufacturers and independent test institutes usually perform additional tests on HV circuit breakers after a...