The
ADR245B is multifunction complete feeder protection
relay (directional over current / Earth fault) relay
design for requirement of typical medium voltage feeder.
All the relay are designed using latest numerical
technology and having programmable digital input and
outputs to minimized external contact multiplication
electromechanical relays. All relays are tested for
EMI / EMC noise as per international IEC specifications.
General features of all relays are as given below
3 stages of Directional / Non Directional
3Io (Internally derived EF) (3Io>,
3Io>> and 3Io>>>).(50N,51N,67N).
3
stages of Directional / Non Directional
Ie (Externally EF or REF) (Ie>, Ie>>
and Ie>>>).(64,67N).
Under Voltage (27)
Over Voltage (59)
Neutral Voltage Displacement (59N).
Trip Circuit Supervision.(TC).
Breaker Failure Detection.(BF).
Monitoring Functions.
Auto Recloser Relay (ARR).(79)
Negative Phase Sequence.(46).
Relay / Led configuration.
Large 20x4 LCD display for Parameter and
setting display.
Disturbance Recorder. Up 3 sec.
Fully communicable with IEC standard open
protocol. IEC60870-5-103 (RS232C and RS485).
6 Digital Output (DO) and 8 Optically
isolated digital status input (DI).
Programmable Logic of DI/DO
Display of Voltage, current, PF, Active,
Reactive Power in terms of primary value.
Specifications :
4
Element (3 Phase + EF + Sensitive EF)
Directional Over current IDMT/DMT with
instant trip.
Selection of Curve: Five selectable
curve (Normal Inverse 1 Normal Inverse
2, Very Inverse Extremely Inverse Long
Time Inverse and Define Time.
2 Setting Groups.
4 stages of Phase Directional / Non
Directional Over Current element. (Ip1>,
Ip2>, Ip>> and Ip>>>).
(50,51,67).
100 nos of event memory, 10 nos of Fault data stored with keypad interface and time stamping.
Ashida
Electronics - is a leader
involved in the Medium Voltage Protection
from many years. Contac the experts in
the field of Medium Voltage Protection.
Visit www.ashidaelectronics.com.
