Ashida ADR241B, Instruction Manual

Page: 90 / 272

ADR241B
Doc ID : ADR241B-DO_IM_01
Ref ID : ADR241B/IM/PLF
Rev No. : 06
Page No. : 90 of 272
4 PROTECTION FUNCTION & LOGIC FUNCTIONS
4.1 Overview
This section describes the ADR241B Feeder Management IED settings, including the
protection elements and basic functions, control I/O logic, as well as the settings associated
with the protection function.
Application data.
Describes the list of information that you will need to know about the protected equipment
before calculating the relay settings.
General Settings.
List of settings that configure the IED inputs to accurately measure and interpret the ac
current input signals.
Breaker Failure (LBB).
Describes all the Breaker Failure settings and logic needed for Breaker failure on internal
protection trip or external BF initiation.
Trip Circuit Supervision.
Describes all the Trip Circuit Supervision settings and logic needed for Trip Circuit
Supervision.
Phase over current.
Describes all the over current settings and logic needed for protection for the Phase over
current fault
Ground over current.
Describes all the externally measured Ground over current settings and logic needed for
protection for the Phase to Ground fault.
Residual Over current.
Describes all the internally derived Ground over current settings and logic needed for
protection for the Ground over current Protection.
Negative Sequence overcurrent.
Describes all the Negative Sequence Over current settings and logic needed for protection
for the Phase reversal or broken conductor fault.