DEIF - Model MDR-2 - Multi-Differential Relay
From Protection
The MDR-2 is a state-of-the-art combined differential protection and short-circuit protection relay for generator protection against internal short circuits (leaking currents). Even in cases of fail tripping, the MDR-2 offers an adjustable tripping characteristic function that compensates for unbalanced current measurements, avoiding fail trippings altogether.
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The MDR-2 gives you direct access to all settings ...
The MDR-2 gives you direct access to all settings and a chronological log of up to 150 historical events/alarms. The unit’s integrated LCD screen displays all measured and calculated values, eliminating the need for additional meters or wiring, and facilitates fault-finding in connection with commissioning identifying fault locations.
Available options include a block (generator + step-up transformer) protection option and a short-circuit and overcurrent protection option.
Features
- Short response time (70 ms)
- 3-phase current detection on both generator sides
- Active adjustment of non-balanced current measurements
- Measuring accuracy 1%
- Display indicator for all measurements
- DIN rail or base-mounting with remote mountable display
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