Alstom SHPM 101, Service Manual

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SERVICE MANUAL R5888B
QUADRAMHO Chapter 5
Appendix A
Page 4 of 18
Test Test and method LED Comments
option indications
no.
43 Overvoltage level A–N A
detectors B–N B
(secondary inject C–N C
voltage
Pushbutton & push–
Z2
button override
(operate push-
button or apply 0V
to SK1 Pin 9)
Low set current A Z3
level detectors
B AIDED TRIP
(secondary inject C SOTF
current)
Inhibit PSB opto input
N V~FAIL
45 Self check of A–N A The LED lights
Zone 1 comparators B–N B for the appropriate
C–N C comparator if it
A–B Z2 passed the last
B–C Z3 self check. If all
C–A AIDED TRIP 8 LEDs are on
self check has
not occurred
46 Self check of A–N A As option 45
Zone 1 comparators B–N B
C–N C
A–B Z2
B–C Z3
C–A AIDED TRIP
47 Self check of A–N A As option 45
Zone 3 B–N B
comparators C–N C
A–B Z2
B–C Z3
C–A AIDED TRIP
Self check of Zone 6 A–B SOTF
comparator
Figure 3: Sheet 2