- Type testing – is often performed on single representative relays from the manufacturer so that personnel can ask questions and clearly understand all the protective functions of the equipment. These tests will detail certain characteristics such as time overcurrent plots, mho circle plots and relay element accuracy in order to verify algorithms and characteristics of the relay.
- Commission testing – prior to placing protective relays into service, installation or commissioning tests are also performed using digital relay tests. These help to verify effectiveness of relay element and logic settings.
- Routine maintenance testing – primarily used to detect traditional relay failures and verify that protective relays will operate when necessary.
We understand the relay test set is vital to performing accurate and reliable protective relay testing. Doble testing equipment and Megger are two manufacturers that offer some of the best relay testing solutions available in the marketplace today. That’s why we have test equipment rental programs designed to work for your project and budget for short or long term rental, lease or even purchase.
Editor’s Note: This post was originally published June, 2012 and has been updated freshness, accuracy and comprehensiveness.