Condition analysis of gas-insulated medium voltage circuit breaker systems is now practical and cost effective.Working with energy distribution utilities Syna and Westnetz, Megger has developed techniques that make it possible to determine the...

There are numerous tests that can be performed on high voltage circuit breakers (HV CBs) so it’s hard to figure out where to begin with testing in order to ensure that circuit breakers operate reliably at a moment’s notice. But help is at hand...

Sweep frequency response analysis (SFRA) testing on transformers provides invaluable information about the mechanical integrity of the transformer’s components – information that can’t be obtained in any other way...

Part 1 of this article, which appeared in the September's 2017 edition of Electrical Tester online and is available by clicking here, looked at the basics of time and travel measurements for circuit breakers. This second and final part presents a...