ADR141A /
ADR241A
Doc ID : ADR241A_IM_01
Ref ID : ADR241A/IM/I&S
Rev No.
: 02
Page No. : 19 of 150
1
INTRODUCTION AND SPECIFICATIONS
1.1
Overview
ASHIDA has designed economical & reliable Multifunction ADR141A/ ADR241A Protection &
Control System. The simple and compact construction of ADITYA series ADR141A/
ADR241A 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:
•
4 Element (3 Phase + EF) over current IDMT with instant trip.
•
Back – lit LCD display for settings.
•
Display of load current in terms of primary.
•
Separate curve selection for phase and EF.
•
Selection of Curve: Seven selectable curves Normal Inverse1 (C1), Normal Inverse2
(C2), Very Inverse (C3), Extremely Inverse (C4), Extremely Inverse (C4A) EE
equivalent, Long Time Inverse (C5) and Definite Time (C6).
•
Design using DSP technology.
•
Latching of fault current up to last 5 faults with time stamping.
•
Cold Load Pickup (CLP) for prolong inrush current.
•
Inbuilt Trip circuit supervision function (TCS).
•
Inbuilt Breaker Failure function (50BF).
•
Programmable Annunciation contacts.
•
Site selectable CT secondary i.e. 1A/5A
•
Self Supervision of relay.
•
Metering function.
•
Fully communicable with IEC standard open protocol IEC60870-5-103.
•
USB (at front) and RS 422/ RS 485 (at rear) communication port for remote SCADA
(Only for ADR241A i.e. communicable relay).
•
User friendly local operation with key pad.
•
Password Protection.
Software Support
•
Online Setting Editor.
•
Online Settings upload / download.
•
Online Measurement.
Summary of Contents for ADR141A
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