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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