ADR244A
Doc ID: ADR244A/PC/01
Rev No.: 01
Page No.: 2 of 15
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Internally Derived / Externally measured
Ground Over Current (3I0>) Protection
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Inverse time Over Current Protection
(IEC & IEEE curves) + User define curve
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Harmonic blocking and unblocking
feature.
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Cold load pick up.
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High Impedance Restricted Earth Fault
Protection (64R).
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Inverse & Definite time Negative
Sequence Over Current Protection (46)
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Broken Conductor Protection (46BC)
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Phase reversal Protection (47)
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Locked rotor / Motor stall Protection
(50LR)
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Breaker Failure detection (50BF)
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Prolong start Protection (66)
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Too many starts / Number of starts
function
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Trip circuit supervision function
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Programmable Inputs & Outputs
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CB Close / Trip from HMI
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Target LEDs for indication with dual
colours (4 nos.)
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Self Supervision of relay
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Metering function
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Disturbance Recording (10 nos.)
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Event Recording (512 nos.)
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Fault Recording on HMI display (10 nos.)
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Non-Volatile memory
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Fully communicable with IEC standard
open protocol IEC60870-5-103
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Separate communication port for SCADA
Communication
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PC front port communication for
convenient relay settings
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User friendly local operation with key pad
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Liquid crystal display
(16x2) with
backlight
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Password Protection.
Software Support:
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Setting Editor.
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Programmable scheme logic Editor.
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Settings upload / download.
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Offline Settings Editor.
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Online Measurement.
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Disturbance analysis.
Applications:
ADR244A numerical multifunction relay
designed for induction motor
protection/feeder protection
applications.
Relay designed with fast and selective
tripping ensures the stability and availability
of electrical power system.
ADR244A relay apply for protection, control
& monitoring of motor/radial and ring main
feeder to achieve sensitivity and selectivity
on phase, ground faults and unbalance load
conditions.
