DEIF - Model MDR-2 - Multi-Differential Relay for Generator Protection
The MDR-2 is an advanced protection relay designed for safeguarding generators against internal short circuits by combining differential and short-circuit protection features. It addresses leakage currents by offering adjustable tripping characteristics to manage unbalanced current measurements, minimizing false trips. Users can access complete settings and review up to 150 past events or alarms directly through its integrated LCD screen, which also presents measured and calculated values to eliminate the need for extra meters and facilitate fault detection during commissioning. The MDR-2 provides options such as combined generator and step-up transformer protection, along with short-circuit and over-current alternatives. This makes the MDR-2 an essential tool for optimizing generator safety and efficiency in various industrial settings.
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.
The MDR-2 gives you direct access to all settiangs 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 over-current protection option.
- 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