ABB RED650 - Page 87

IEC01000239_2-en.vsd
Activating
signal 2
LED 2
Manual
reset
Activating
signal 1
Automatic
reset
LED 1
Disturbance
tRestart
IEC01000239 V2 EN-US
Figure 23: Operating sequence 6 (LatchedReset-S), two indications within
same disturbance
Figure 24 shows the timing diagram for a new indication after tRestart time has
elapsed.
IEC01000240_2_en.vsd
Activating
signal 2
LED 2
Manual
reset
Activating
signal 1
Automatic
reset
LED 1
Disturbance
tRestart
Disturbance
tRestart
IEC01000240 V2 EN-US
Figure 24: Operating sequence 6 (LatchedReset-S), two different
disturbances
1MRK 505 394-UEN A Section 5
Local Human-Machine-Interface LHMI
Line differential protection RED650 2.2 IEC 81
Technical manual