DEIF LMR-122D Loss of mains relay

LMR-122D

Loss of mains relay

DEIF’s loss of mains relays protect generators against damage resulting from a non-synchronised reconnection  to the grid after a temporary mains failure.

DEIF’S RMC current and short circuit relays are applied in cases where only protection against short circuit or current is required (I>>).

Variants

RMC-111D

Short circuit

I>>: 100 to 400 %. <50 mS response time

RMC-121D

Short circuit

I>>: 100 to 400 %. 2 sets of contacts (parallel)

RMC-122D

LMR-122D

Short circuit and over-current

I>>: 100 to 400 %, I>: 50 to 150 %

Combined functionality

RMC-131D

Differential current

I>>: 100 to 400 %. 2 sets of contacts (parallel).

Features

Vector shift and df/dt (ROCOF)

Detection of vector shift

ANSI code 78

Mains disconnection on mains failure

Ensures no asynchronous reconnection

LED indication of fault condition

LED indication for activated relay

35 mm DIN rail or base mounting