DEIF’s RMP-121D is a protective reverse power relay for generator and prime mover protection.

Protection against overload is crucial in setups where the prime mover is under-dimensioned in proportion to the AC generator.

The versatile unit features a number of adjustable parameters.

Variants
RMP-111D

Overload
P>: 25 to 125 %. 2 W 3, 3 W 3 (4)
RMP-112D

Overload and reverse power
P>: 25 to 125 %, -P>: 0 to 25 %. 2 W 3, 3 W 3 (4)
RMP-121D

Reverse power
P>: 0 to 25 %. 1 W (4), 1 W 3