To be competitive, some electrical contractors often supply low-voltage (LV) service entrance switchboards and switchgear that meet the minimum safety requirements of the National Electrical Code (NEC ...

Littelfuse, Inc. has announced its RCD300M2 Differential Current Relay, designed to improve worker safety and protect equipment from dangerous electrical ground faults. To avoid nuisance tripping that ...

The Vigirexâ„¢ ground-fault relays are designed for use on equipment, such as HVAC units and manufacturing machines, used in industrial and commercial facilities. These ground-fault devices are ...

The PGR-5330 is an advanced ground-fault and resistor monitoring relay that measures neutral current, neutral-to-ground voltage, and neutral resistance. The device also provides continuous monitoring ...

A PAPER entitled "A Modern Earth-Fault Relay Equipment for use on Systems Protected by Petersen Coils" was read in London recently by L. B. S. Golds and C. L. Lipman before the Institution of ...