DEIF LMR-111D Loss of mains relay

LMR-111D

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

A mains failure will be detected, provided a disconnection at an arbitrary point of the network results in a swift change of the generator frequency (vector shift).

An opening signal is then transmitted to the mains circuit breaker, and the generator will thus be protected against damages caused by an automatic reconnection to the high-voltage network.

Variants

LMR-111D

Vector shift

LMR-122D

Vector shift and df/dt (ROCOF)

Features

Vector shift

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