SERVICE MANUAL R5888B
QUADRAMHO Chapter 6
Addendum A
Page 1 of 15
Test option no. Test and method LED indications Comments
40 Zone 1 comparators gated A–N A Amplitude and
with low set current B–N B angular hysteresis
level detectors C–N C operate on any
Zone 1 comparator.
(Secondary Inject A–B Z2 No tripping will
Zone 1 Fault) B–C Z3 occur
C–A AIDED TRIP
Breaker open opto input
(apply rated volts to A3 –A4) SOTF
Reset Zone 1 extension opto
input (Apply rated volts to
A1–A2)
The “Zone 1 extension” opto is V~ FAIL
redesignated as “miniature
circuit breaker open” opto
when this version has been
supplied.
41 Zone 2 comparators gated A–N A Amplitude and
with low-set current B–N B angular hysteresis
level detectors C–N C operate on any
Z2 comparator
(Secondary inject A–B Z2 No tripping will
Zone 2 fault) B–C Z3 occur.
C–A AIDED TRIP
Signal receive opto input
(apply rated volts to A9–A10) SOTF
Channel in service opto input V~ FAIL
(apply rated volts to A7–A8)
The “signal receive” opto also
can be used to “reset Zone 1
extension” for the appropriate
thumbwheel selection option.
42 Zone 3 comparators gated A–N A Amplitude
with low-set current B–N B hysteresis operates
level detectors C–N C on any Zone 3
comparator.
(Secondary inject A–B Z2 No tripping will
Zone 3 Fault) B–C Z3 occur.
C–A AIDED TRIP
Zero Sequence voltage level SOTF
detector (secondary inject)
Inhibit PSB opto input
(apply rated volts to A5–A6) V~ FAIL
Figure 1: Sheet 1: Input test options Table 6
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