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 ...

Protecting personnel and equipment from damage is a top priority for most companies, especially those whose work involves industrial power systems. The neutral grounding resistor (NGR) with integral ...

The PGT-0400 is a ground-fault-relay test unit designed to test current pickup level, time-delay and coordination of ground-fault protection. The tester injects current through the window of installed ...

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 ...

This chapter covers representative general-purpose relays used in the control circuits of most industrial, commercial, and consumer products. Relay names and terminology are in accordance with ...

Based on Trayer Engineering's original VFI design introduced in 1980, the 3000 Series three-phase vacuum fault interrupters take this design and incorporate the latest advancements of vacuum ...

Most industrial facilities include electric motors that require overload relays for protection, control and monitoring purposes. The latest overload relays are often called motor management relays ...

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...