The
ADR241B is multifunction over current / Earth fault
Numerical 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 3Io (Internally derived EF)
(3Io>, 3Io>> and 3Io>>>)
(50N,51N).
3
stages of Ie (Externally EF or REF) (Ie>,
Ie>> and Ie>>>) (64).
Trip Circuit Supervision.(TC)
Breaker Failure Detection.(BF)
Monitoring Functions.
Auto Reclose 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.
100 nos of event memory, 10 nos of Fault
data stored with keypad interface and
time stamping.
Specifications :
4 Element (3 Phase + EF + Sensitive EF) 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 Over Current element.
(Ip1>, Ip2>, Ip>> and Ip>>>)
(50,51).
Model
Functional Details
Cabinet Style
ADR241B
Multifunction
Communicable Over current / Earth fault Numerical
Relay
Ashida
Electronics - Exporter &
Manufacturer of Numerical Self Powered IDMT
Protection Relay based in India. Contact
for more information about Self Powered
Relay from www.ashidaelectronics.com.
