SERVICE MANUAL R5888B
QUADRAMHO Chapter 5
Addendum 2
Page 10 of 13
Aided trip
Instantaneous aided trip obtained for Zone 2
fault and no signal received
Zone 2 time delayed trip obtained for
Zone 2 fault and signal received
Measurement of t
p
Operation times with t
p
= 0
________ , _________, ________ , ________ , _________ ,
Average time = ms (t
1
)
Opeation times with set t
p
________ , _________, ________ , ________ , _________ ,
Average time = ms (t
2
)
Set t
p
=t
2
– t
1
+ 6 ms
= ms (tolerance ±5ms)
Signal Send Check
Contacts (B1-2, B3-4) close for reverse Zone 3 fault
Contacts operation in test option 62 with SW8 to the right
Signal receive check
In test option 41 check that the SOTF LED illuminates
Block auto reclose checks (SW6 function check)
SW6 to the right CIS not energised
Block auto reclose contact (B25-26) is closed
CIS energised contact open
SW6 to the left contact open if CIS energised or not
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