SERVICE MANUAL R5888B
QUADRAMHO Chapter 6
Addendum A
Page 4 of 15
Test option no. Test and method LED indications Comments
52 Zone 3 comparators A–N A As option 42.
(secondary inject B–N B
Zone 3 fault) C–N C
A–B Z2
B–C Z3
C–A AIDED TRIP
Zero sequence voltage level SOTF
detector (apply low voltage
and increase to pick up)
Inhibit PSB opto input V~ FAIL
(apply rated volts to A5–A6)
53 Memory input volts VC B Provides a squared
(apply rated volts to C phases) monitor output on
socket 2 pin 24.
Zone 6 comparator AB C
(secondary inject AB
Zone 6 fault)
Option setting switch SW9 Z2 LED on when
High set current level A Z3 switches in right
detectors B AIDED TRIP hand position.
(secondary inject content) C SOTF
N V~ FAIL
54 Zone 2 timer switch 1280 A Indications lit
640 B when switches in
320 C right hand position.
160 Z2
80 Z3
40 AIDED TRIP
20 SOTF
10 V~FAIL
55 Zone 3 timer ∞ A As option 54.
switch settings 2560 B
1280 C
640 Z2
320 Z3
160 AIDED TRIP
80 SOTF
40 V~FAIL
Figure 1: Sheet 4
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