The overcurrent – time diagram is introduced and explained why different trip times make sense to obtain selectivity of a system with more than one relays. As a last step the reason for protection ...

For instantaneous overcurrent test applications, the SMRT 36 can provide up to 180 A at high power. Megger’s new SMRT 36 protection relay test set can be controlled manually with the optional Smart ...

To address this need, a relay test set conceived as an engineer’s “multifunction testbox” for protection testing has been developed.