SERVICE MANUAL R5888B
QUADRAMHO Chapter 5
Addendum 2
Page 6 of 13
POWER SWING BLOCKING FEATURE (IF USED)
Zone 6 Boundary (Inject A – B)
Forward loop impedance required = 1.3 x forward Zone 3 loop impedance
= _________ ohms
Measured loop impedance = _________ ohms
Reverse loop impedance required
= Zone 3 reverse loop impedance + (0.3 x forward Zone 3 loop impedance)
= ________ ohms
Measured loop impedance = _________ ohms
An additional tolerance of ±15% is allowed for the reverse reach
50ms Timer check
Measured time = _________ ms (±5ms)
Blocking and contact check
Block works on Zone 1
Block works on Zone 2
Block works on Zone 3
Alarm contact operation
Opto isolator inhibit input
VOLTAGE TRANSFORMER SUPERVISION
Operation on zero sequence volts
Voltage on phases not reduced _________ V
_________ V
Voltage for operation on 3rd phase _________ V
Timing check
Nominal 5.5s (±0.1s)
Actual time _________ s
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