Protective relay testing is a vital diagnostic test that detects relay issues that are not obviously noticeable. This test provides protection to sensitive electrical apparatus equipment such as substations and switchgear. Images above: (left to right) Doble...
By: Keith Armstrong I was thinking the other day as I packaged up the tightly built Doble 6150 for shipment that the old days were something I should reminisce about for a while. As I was taking off the front cover to ensure the correct serial number device was being...
