RMC-121D

Current relay

The RMC-121D combined short circuit and over-current relay is applied for protection of generators against both over-currents and short circuit currents.

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RMC 121D Front
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RMC 121D Front
RMC 121D Angle
RMC 121D Side
RMC 121D Back

The RMC-121D combined short circuit and over-current relay is applied for protection of generators against both over-currents and short circuit currents (I> + I>>).

RMC-121D has two sets of contacts.

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

  • 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).

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Documentation

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Application 04 Switchboard Equipment

Switchboard equipment

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Over-/undervoltage relay, U> and U<

Over-/undervoltage relay, U> and U< RMV-142D

  • Under- and Over-voltage.
  • U>: 100 to 120 %, U<: 80 to 100 %.
  • Single phase measurement.
  • Under-voltage/over-voltage (U< + U>)
  • ANSI code 27 and 59
  • 3-phase measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
 Compare product More details
Undervoltage relay, U< and U<

Undervoltage relay, U< and U< RMV-132D

  • Under-voltage (double).
  • U<: 80 to 100 %, U<: 80 to 100 %.
  • Under-voltage/over-voltage (U< + U>)
  • ANSI code 27 and 59
  • 3-phase measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
 Compare product More details
Overvoltage relay, U> and U>

Overvoltage relay, U> and U> RMV-122D

  • Over-voltage (double).
  • U>: 100 to 120 %,U>: 100 to 120 %.
  • Under-voltage/over-voltage (U< + U>)
  • ANSI code 27 and 59
  • 3-phase measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
 Compare product More details
Undervoltage and overvoltage relay, U< and U>

Undervoltage and overvoltage relay, U< and U> RMV-112D

  • Under- and over-voltage.
  • U>: 100 to 120 %, U<: 80 to 100 %.
  • Under-voltage/over-voltage (U< + U>)
  • ANSI code 27 and 59
  • 3-phase measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
 Compare product More details
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