ABB Relion 650 Series Technical Manual page 72

Section 4
Local Human-Machine-Interface LHMI
Activating
signal 1
Activating
signal 2
LED 1
LED 2
Automatic
reset
Manual
reset
IEC01000240 V2 EN-US
Figure 24: Operating sequence 6 (LatchedReset-S), two different disturbances
Figure 25
but before
Activating
signal 1
Activating
signal 2
LED 1
LED 2
Automatic
reset
Manual
reset
IEC01000241 V2 EN-US
Figure 25: Operating sequence 6 (LatchedReset-S), two indications within same disturbance
Figure 26
66
Disturbance
shows the timing diagram when a new indication appears after the first one has reset
tRestart has elapsed.
Disturbance
but with reset of activating signal between
shows the timing diagram for manual reset.
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Disturbance
tRestart tRestart
tRestart
IEC01000240_2_en.vsd
IEC01000241_2_en.vsd
Line distance protection REL650
1MRK 506 326-UUS B
Technical manual