MG30: For Impedance Grounded (NGR / NGT) Generators
MG30-I: For Solidly Grounded Generators

MG30 / MG30-I is Multifunction Microprocessor Relay for protection of medium/large synchronous generators. The relay measures the RMS of three-phase currents and voltages and computes the positive and negative sequence components of the Current system.

Salient Features:

Voltage-controlled overcurrent protection

Thermal image element with prealarm level

Reverse power protection

Loss of Field protection

PT s' fuse failure protection   

Modbus Communication Protocol 

Breaker Failure protection

Inadvertent C/B closure protection

Blocking Output and Blocking Input for pilot wire selectivity coordination

Single Phase Reverse Power Relay
MRP11 is micro controller based single phase, reverse power relay with one measuring element. Relay  operates  for  pure  active  reverse  power  only  and will  not  cause  spurious  tripping  due  to  PF  fluctuations  in  the  system. Relay can work as a reverse reactive power relay with an addition potential transformer.
 
Salient Features
 
0.5% sensitivity
 
Four Quadrant operation
 
Reactive power option
 
Voltage Input: 110 / 415 V AC (Field Selectable)
 
Application
 
The  relay  can  be  used  protection  of  generators  from  reverse  power conditions  or  in  grid  islanding  systems  for  detecting  mains  failure  or  prevention  of  power flow  from  small  generators  to  grid.
 
Single Phase Reverse Power Relay

MCOMP