ADR141C – Compact Non Communicable 3 OC + 1 EF

Over current / Earth fault Medium Voltage Protection Relay

General Description

The ADR141C is a 3 OC and 1 EF Medium Voltage Protection relay with Instantaneous high set and programmable output design in very compact cabinet.

ANSI Protection Functions
50 Instantaneous Over current Protection (OC-Inst.)
50N Instantaneous Earth Fault Protection (EF-Inst.)
51 Time Over current Protection (Phase) (OC-IDMT.)
51N Time Over current Protection (Earth) (EF-IDMT.)

Model Functional Details Cabinet Style
ADR141C Non Communicable Numerical Over current / Earth fault Medium Voltage Protection Relay. CSF-H-136

Numerical 3OC + 1EF Medium Voltage Protection Relay : ADR141C


  • 4 Element (3 Phase + EF) over current IDMT with instant trip.
  • Display of fault current. / Load current.
  • Selection of Curve: Six selectable curves (Normal Inverse1 (C1), Normal Inverse2 (C2), Very Inverse (C3), Extremely Inverse (C4), Long Time Inverse (C5) & Definite Time (C6).
  • Separate curve selection for phase and EF.
  • Latching of fault current up-to last 5 fault.
  • Site selectable CT secondary
  • Programmable Annunciation Contact
  • Trip circuit supervision function.