Control power systems change the VOLTAGE levels of the primary voltage, to a usable level needed by many electrical devices. For instance, a common low voltage system (one thousand volts or below) operates at 480 volts, a popular distribution voltage in factories. 480 volt is used to power 480-volt three…
Bolted Pressure Switches
REMEMBER: Just because you haven’t seen problems doesn’t mean there are no problems! These system’s do not announce failure. When called to operate, malfunction will put your facility without electrical power quicker than you can say “why didn’t I maintain this?”
Hi I’m Neil…
Switchgear Testing 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…
Control Power Transformers in Switchgear
Switchgear has needs for control power transformers. Circuit breaker operation: motors that charge breaker springs. Power too close or trip the solenoids that operate the breaker Electronic devices such as power monitors, automatic power factor correction systems, etc Convenience outlets Cabinet lighting/ indicator lamps Station battery charging systems Control Power…
Completely Testing Ground Fault Systems and Its Importance.
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…