Feeder Protection Relay – A21F

Feeder Protection Relay

A21F Feeder Protection Relay

Model Functional Details Cabinet Style
A21F Feeder Protection Relay CSE


ANSI Code Description
CLP Cold Load Pick Up
SOTF Switch ON To Fault
37 Under Current Protection
46 Negative Phase Sequence Protection
46BC Broken Conductor Detection
49 Thermal Overload Protection
50 Instantaneous/Definite time phase over current Protection
51 Inverse Time Phase Over current Protection
50N Instantaneous/Definite Time Ground Over current Protection
50SEF Sensitive Ground Over Current Protection
51N Inverse Time Ground Over current Protection
64G High Impedance Restricted Earth Fault Protection
50BF Breaker Failure
86 Lockout (Trip command)