SERVICE MANUAL R5888B
QUADRAMHO Chapter 5
Addendum 2
Page 7 of 13
Prevention of operation with zero sequence current
Function correct
Relay inoperative obtained
when SW3 to the right
Instantaneous indication and
tripping obtained with SW3 to the left
Comparators blocked and time delayed
indication obtained with SW3 to the right
SWITCH-ON-TO-FAULT FEATURE (MODE CONTROLLED BY SW1 AND SW2)
SOTF indication
Trip time _________ ms
For busbar VT breaker open
opto isolator input checked
Alarm contact check
MEMORY FEATURE CHECK
(Close up C-N fault and C-N volts on all phases)
Measured dwell time of trip contacts _________ ms
FUNCTION OF SW4
(If to the right, auto reclose blocked for certain 3 phase faults)
Block auto reclose contact check
TRIP TEST FUNCTION CHECK (Test option 88)
Contacts checked __________________________
Contact operation inhibit checked
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