Hi, I’m Neil, owner and operator of All-Test Company. We help people keep their switchgear up and running via testing, repair, preventative maintenance, calibration and product sales. I have learned quite a bit about switchgear in my 39 years of hands-on field experience working at Square D Company and owning…
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Control Power Transformers in Switchgear
Switchgear has needs for control power. It is used for circuit breaker operation: motors that charge breaker springs. Or power to close or trip the solenoids that operate the breaker Or Electronic devices such as power monitors, automatic power factor correction systems, etc Or Convenience outlets Or Cabinet lighting/ indicator…
Importance of completely testing ground fault systems.
Last weekend, we performed a scheduled ground fault test on the main electrical system at a school. We have tested it according to the manufacturer’s directions for 19 years. It passes every year! This time, it failed! The main switch did NOT turn off. Had this been an actual ground…
