Schweitzer Engineering Laboratories, Inc. (SEL) has announced wide-area-measurement-based control in a transformer relay for the first time. This enhancement to the SEL-487E Transformer Protection ...
Schweitzer Engineering Laboratories has released the SEL-851 Feeder Protection Relay, which provides overcurrent, voltage and arc-flash protection for utility and industrial applications. This compact ...
Transformer secondary conductor protection for voltage levels less than 1,000V is adequately covered in Art. 240 of the National Electrical Code (NEC) – more specifically, Sec. 240.21(C)(4). There are ...
The Zone Control family of products includes switching relays, zone valve controls, priority zoning circulators, fan controls, and add-on controls. The products come with external diagnostics to show ...
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