Ashida ADR241B, Instruction Manual

Page: 23 / 272

ADR241B
Doc ID : ADR241B-DO_IM_01
Ref ID : ADR241B/IM/I&S
Rev No. : 06
Page No. : 23 of 272
1 INTRODUCTION AND SPECIFICATIONS
1.1 Overview
ASHIDA has designed economical & reliable Multifunction ADR241B Protection & Control
System. The simple and compact construction of ADITYA series ADR241B relay provides
integrated Protection, Control and Monitoring functions for Over head Transmission
Lines, Underground cables, and Distributed Feeders.
1.2 Features
Key Protection & Control Functions:
•
Four Independent Settings Groups.
•
Phase & Ground Over Current Function (50/51/50N/51N).
•
Two Independent Stages for Phase Over Current Protection.
•
Internally Derived / Externally measured Ground Over Current (3Io>/IE>)
Protection.
•
Inverse & Definite time Over Current Protection (IEC & IEEE/ANSI curves
according to IEC60255).
•
High Impedance Restricted Earth Fault Protection (64R).
•
Inverse & Definite time Negative Sequence Over Current Protection (46).
•
Cold Load Protection (CLP).
•
Broken Conductor Protection (46BC)
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Under Current (low load) detection.
•
Thermal Overload function.
•
Multi shots (4-shots) Auto-reclosing function.
•
Breaker Failure detection (50BF).
•
Trip circuit supervision function (TCS).
•
Programmable Inputs & Outputs.
•
CB Close / Trip from HMI.
•
Programmable Target LEDs for indication with dual colours (8 nos.).
•
Self Supervision of relay.
•
Metering function.
•
Disturbance Recording (10 nos.).
•
Event Recording (512 nos.).
•
Fault Recording on HMI display (10nos.).
•
Non-Volatile memory.
•
Fully communicable with IEC standard open protocol IEC60870-5-103 ,
MODBUS & IEC61850.
•
Rear communication port for SCADA Communication.