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The alarm is initiated by MRR1-Relay SEG Woodward for generator rotor protection. the failure diode protection Ir=(Ie,max-Ie,min)/Ie is tripping the generator. however all the diodes are ok. if Ir="15"..20%, one diode is open if Ir#110% and one diode short if Ir#200% during our test Ir is reaching 80..90%.
The Rotor Protection relay is used in synchronous motors and generators to identify the presence of an earth fault in the rotor winding.
9 Jul 2012 Anyone familiar with the Woodward SEG MRR1 rotor protection relay. I have a unit of diesel generator installed with this relay. I'm having problem that it is tripping on "Ir" protection. It.
Device, MRR1. Line, High Tech Line. Binary inputs, 2. Output relays, 4. Watchdog relay, 1. Diode failure, Yes. Exciter current protection [40/76], Yes. Output relay matrix, Yes. Parameter sets, 1. Reset / Blocking, Yes. Rotor earth fault protection [64N], Yes. RS485 Open Data Protocol, Yes
15 Oct 2011 Download the WOODWARD SEG MRR1 multi-function generator Rotor Protection relay Manual ,or search and download other millions of manuals/guides/handbooks from ManualLib.
MRR1 Manual - Download as PDF File (.pdf), Text File (.txt) or read online. Manal del rele de proteccion de generador MMR1.
MRG3 — Generator protection / Mains decoupling; MRN3 — Combined mains decoupling relay (ROCOF); MRU3 — AC Voltage Relay; MRF3 — Frequency Relay; MRP2 — Directional Power Relay; MRS1 — Negative sequence relay; MRQ1 — Field failure relay; MRR1 — Multifunctional Generator Rotor Protection Relay
Manual MRR1 GB. 4. DOK-TD-MRR1 Rev.A. 1. Introduction and application. The generator rotor protection relay MRR1 com-bines rotor earth fault protection, excitation over- and undercurrent protection as well as rotating diode failure protection. Thus providing a powerful protection regarding the rotor of synchronous
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