Ashida ADR111A, Instruction Manual

Page: 19 / 128

Doc ID : ADR111A_IM_01
Ref ID : ADR111A/IM/I&S
Rev No.
: 04
Page No. : 19 of 127
ADR111A /
ADR211A
1 INTRODUCTION AND SPECIFICATIONS
1.1 Overview
ASHIDA has designed economical & reliable Single element over current ADR111A/
ADR211A relay to simply feeder protection wiring. The simple and compact construction of
ADITYA series ADR111A/ ADR211A relay provides integrated Protection, Control and
Monitoring functions for feeders. This relay is mainly deployed in various electrical utilities at
industrial installations for Low voltage/ Medium voltage switchgear control.
1.2 Features
• Single Element over current IDMT with instant trip.
•
Relay can be used for single pole OC or EF or REF application.
•
Back - lit LCD display for settings.
•
Display of fault current. / Load current.
•
Selection of Curve: Seven selectable curves Normal Inverse1 (C1), Normal Inverse2
(C2), Very Inverse (C3), Extremely Inverse (C4), Extremely Inverse (C4A) as per EE
Relays, Long Time Inverse (C5) & Definite Time (C6).
•
Design using DSP technology.
• Latching of fault current up-to last 5 faults.
• Password protection for setting.
•
Site selectable CT secondary i.e. 1A/ 5A.
•
Relay can be made either IDMT or Define Time.
•
Programmable operating time in instantaneous element.
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Inbuilt Breaker Fail detection.
•
USB (at front) and RS422/ RS485 (at rear side) Communication Port for remote SCADA
(only for ADR211A i.e. communicable Relay).