ABB has released its Relion REF615R feeder IED. The REF615R was designed to offer an easy, quick and affordable way to upgrade ABB’s DPU2000R relay along with providing a 19-inch rack mount version of ...

Q. When is ground fault protection of equipment required for feeder circuits? A. Each feeder disconnecting means rated 1,000A or more supplied by a 4-wire, 3-phase, 277/480V wye-connected system must ...

Opus(R) Incorporated, a leading international marketer of home and garden products and outdoor accessories, today announced the launch of the newest addition to the company's successful TopFlight ...

Q. What is the Code rule for sizing short circuit and ground fault protection for a motor feeder? A. Feeder conductors must be protected against short circuits and ground faults by a protective device ...