SEL released two new field-upgradable cards for the SEL-751 Feeder Protection Relay, along with several enhancements that will allow it to support a wider range of applications. The two new cards ...
One of the most important aspects of a safe electrical power system is the proper performance of ground-fault protective equipment. Mandated by the National Electrical Code (NEC), Art. 230.95(C) ...
Acceptable ohm reading for a good current relay. One type of starting relay used on fractional-horsepower compressors is the current relay. This type of starting relay uses the initial high inrush ...
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