The MDR-2 differential protection relay is a micro processor based control unit containing all necessary functions for monitoring of the differential currents for a synchronous/asynchronous generator or motor (the object). Via current transformers the MDR-2 measures each phase current on both sides of the object. The current transformers determine the limits of the protection area. Any failure within these limits (2- or 3-phase short circuits or earth leaks) will be detected as an error Id: Differential currents, the currents flowing through the two current transformers of the phase in question differ, and, if a preset limit value is exceeded, a warning will be given or a tripping signal transmitted. The MDR-2 dynamic compensation curves for warning and tripping are defined by the user. The MDR-2 is a flexible and menu/PC-programmed unit, enabling the user to easily adapt the unit to the object in question. The programming procedures are password protected. Features : • Relay for generators/electric motors • 3-phase AC measurements • Dynamic compensation for ext. failures • Short response time (70 ms) • Display indicating all measurements Borna Niroo Karan (Bornika) is the exclusive agent of DEIF in the fields of consultation , sales and distribution of power industry products including Multi differential protection relay products .
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