ADR233B
Ref ID : ADR233B/IM/DR
Rev No. : 05
Page No. : 460 of 479
10.3 Disturbance recording
ADR233B relay provides built in disturbance recording facility for recoding analogue and digital
channels. Relay records 10 nos. of disturbances and stores it in non-volatile memory.
Disturbance records can be saved in IEEE COMTRADE format and same can be analyzed in
disturbance analysis software.
For saving DR two mode of sampling are available, first is RAW samples (DR of 1.5 seconds) &
second is 16 samples (DR of 3 seconds), user can set as required.
10.4 History Fault recording:
ADR233B relay provides built in history fault recording facility for recoding the fault with the
voltage, current, symmetrical components parameter value. Relay records history fault and
stored in to non-volatile memory.
The following example is given to analyze the event and Disturbance analyzer for Positive
sequence over current function.
10.5 Positive Sequence Over current function
The following settings are set into the relay to simulate the Positive sequence over current
function to operate and observe the waveform in the Disturbance recording and event in the
event recording.
Stage1: Seq.I>1
Seq.I>1 = +Seq
Seq.I>1 = 50%
Seq.I>1 Curve = DT
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