| Motor Protection Relays
MM30 Motor Protection Relay
The MM30 provides complete protection for most size motors.
Protective functions thermal overload protection (49), unbalance (phase reversal or single
phasing) protection (46), locked rotor protection (51LR), ground fault protection (51N or
64), no-load run protection (undercurrent) (37), Starter sequence control (48), and
thermal probe (RTD) input (26).
Edison MM30D Motor Relay
The MM30D relay has all the same features as the MM30 but
offers directional ground fault (67N) in place of the non-directional ground (50N) in the
MM30 for use on ungrounded systems.
- Catalog Section 150-45
- Instruction Manual S150-45-1
Edison MD32G Rotating Machine Differential Relay
The MD32G provides differential protection for rotating
machine including both motors and generators. The MD32G provides protection against two or
three-phase internal faults, inter-turn faults, and ground faults in equipment with
low-impedance or solidly grounded neutrals. Its multi-slope percentage bias characteristic
allows for compensation of CT ratio error mismatch and differences in CT response. In
addition to differential protection, the MD32G provides phase and ground time-overcurrent
and breaker failure protection.
- Catalog Section 150-30
- Instruction Manual S150-30-1
Edison DIN30M Motor Relay
Providing comprehensive motor protection in a very compact
and economical package, the DIN30M provides thermal overload protection (49), unbalance
(phase reversal or single phasing) protection (46), locked rotor protection (51LR), ground
fault protection (51N or 64), no-load run protection (undercurrent) (37), Starter sequence
control (48), and thermal probe (RTD) input (26).
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