A transformer switching onto a line can sometimes cause a circuit breaker to trip or a fuse to blow. This phenomenon occurs even if the transformer presents no load, such as when the secondary is open ...

Acceptable ohm reading for a good current relay. One type of starting relay used on fractional-horsepower compressors is the current relay. This type of starting relay uses the initial high inrush ...

Omron Electronic Components Europe has launched the G5Q-HR, the latest addition to the G5Q family of 10A PCB power relays. Credit: Omron The new relays can achieve reduced power consumption and heat, ...

This 10A, high-current terminal block relay with larger contacts can be used to extend service intervals up to two to three times the standard 6-mm terminal block relay, according to the company.

OMRON Electronic Components Europe has introduced the G9EJH-1-E, an ultra-compact DC power relay, delivering inrush protection in battery-charging systems up to 800V. The G9EJH-1-E is an ultra-compact ...

Nov. 13, 2008, PULLMAN, WA - Schweitzer Engineering Laboratories, Inc. (SEL) is now taking orders for two new products, the SEL-787 and SEL-487E Transformer Protection Relays. These are the first ...

R&D engineers have traditionally found it a challenge to measure dc inrush current and current during dc voltage transients because these measurements require complex setups with multiple pieces of ...

Omron has a series of compact PCB mount power relays designed to handle ‘TV-8’ in-rush surges, and they are available with standard coils or two forms of bi-stable coils. Called the G5Q-HR range, they ...

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 ...

If used correctly, a reed relay is a superbly reliable device. The switch contacts are hermetically sealed, so they don’t suffer from oxidization or contamination in the same way as an open ...