T&D

Transformers Operate Meters, Instruments, Relays, and Control Devices

GE Digital Energy announces a new family of ITI Outdoor Medium Voltage (MV) Instrument Transformers that includes voltage and current instrument transformers in the 15kV, 25kV, and 34.5kV class GE ...
T&D

Relays Update 4-kV Municipal Substation, Transformer Stations

ENWIN Powerlines, Ltd., the organization responsible for the distribution of electric power in Windsor, Ontario, Canada, has undertaken a major substation automation initiative that will improve ...
Machine Design

Electromechanical Relays and Contactors

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 ...
Electronic Design

What’s the Difference in Switching Design Between AC and DC Power Relays?

Power relays are specifically designed to handle either AC or DC. It’s important to know the fundamental differences between them before building them into a system. Introduction to AC and DC Power ...
Machine Design

Reborn Relays Play Key Roles in Control

This file type includes high resolution graphics and schematics when applicable. According to the research firm IHS Inc., about 54 million relays and timers were purchased in 2013, a number projected ...