The
ADR241A is communicable 3 OC and 1 EF relay with Instantaneous
high set and programmable output to simplify feeder
protection wiring.
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.)
Specifications :
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.
Breaker Fail.
SCADA compatibility. IEC60870-5-103 protocol.
Model
Functional Details
Cabinet Style
ADR241A
Communicable
Numerical Over current / Earth fault Relay.
