Alstom SHPM 101, Service Manual

Page: 247 / 336

SERVICE MANUAL R5888B
QUADRAMHO Chapter 5
Appendix A
Page 3 of 18
Test Test and method LED Comments
option indications
no.
40 Zone 1 comparators A–N A Amplitude and angular
Gated with low set hysteresis operate on
current level detectors B–N B any Zone 1 comparator.
C–N C No tripping will occur
(Secondary inject A–B Z2
Zone 1 fault) B–C Z3
C–A AIDED
TRIP
Breaker open opto input
(apply rated volts to A3–A4)
SOTF
Reset Zone 1 extension
miniature circuit breaker
opto input (apply rated volts
V~FAIL
to A1–A2)
41 Zone 2 comparators A–N A Amplitude and angular
Gated with low set hysteresis operate on
current level detectors B–N B any Zone 1 comparator.
C–N C
(Secondary inject A–B Z2
Zone 2 fault) B–C Z3
C–A AIDED No tripping will occur
TRIP
Signal receive/reset Zone 1
extension opto input
SOTF
(apply rated volts to A9–A10)
Channel in service opto input V~FAIL
(apply rated volts to A7–A8)
42 Zone 3 comparators A–N A Amplitude hysteresis
Gated with low set operate on
current level detectors B–N B any Zone 3
C–N C comparator.
(Secondary inject A–B Z2
Zone 3 fault) B–C Z3 No tripping will
C–A AIDED occur
TRIP
Zero sequence voltage
Level detector
SOTF
(secondary inject)
Inhibit PSB opto input V~FAIL
(apply rated volts to A5–A6)
Figure 3: Sheet 1 Input test options Table 6