The CMC 356 is the universal solution for testing all generations and types of protection relays. Its powerful six current sources (three-phase mode: up to 64 A / 860 VA per channel) with a great dynamic range, make the unit capable of testing even high-burden...
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 Primary Injection Testing or Secondary Injection Testing – That is the Question. If you have been in the electrical power testing industry long enough you have definitely heard this topic batted around the rafters a few times. What is a breaker...
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...
