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Numerical Single Function Relays : Genesis->
Numerical Overcurrent & Earth Protection Relay Type : MJT 314


MJT 314 over current relay combines the power and flexibility of microprocessor technology with decades of experience in the field of protection. A wide range of protection elements and characteristics are supplemented by advance features such as metering, fault recorder and communication. MJT 314 offers inverse time and definite time over current protection for phase fault and earth fault with communication.


  • Distribution Feeders
  • Transmission lines
  • AC machines
  • Capacitor banks
  • Transformers


Standard Features
IDMTL / DTL phase fault over current stage (50/51)IDMTL / DTL earth fault over current stage (50N/51N)
Readable human machine interface with backlit LCD displayDigital input for group changeover application
Two group settingsStorage of five fault records
Internal realtime clockSuitable for flashing faults
Both 1A and 5A ratings in same relaySuitable for wide range of auxiliary supply
Non volatile memory for trip indicationLow AC and DC burden
Self monitoring facilityWide range of current settings

Writing Diagrams

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