RMQ-111D Loss of Excitation Relay

This relay is applied to protect a generator running in parallel with other generators from running as an induction generator due to underexcitation.

Features include
•     Protection of generators
•    Single phase measurement
•    Timer controlled tripping
•    LED indication of fault/activated relay
•    35 mm DIN rail or base mounting

The RMQ-111D is especially applied in cases where applying an undervoltage relay for protection does not suffice, because the remaining generators of the system can supply sufficient reactive power to magnetize the faulty generator, thus maintaining the terminal voltage of the generators.