ABB REL 551 2.3 Series - Page 129

123
Trip logic (TR) &KDSWHU
9HULI\LQJVHWWLQJVE\VHFRQGDU\
LQMHFWLRQ
 ,QLWLDWHDWKUHHSKDVHIDXOW
Consider sufficient time interval between the faults, to overcome a
reclaim time of eventually activated autoreclosing function. Only
a three-phase trip should occur for the fault and all trip outputs
(TRIP-TRLn) should be activated at the same time. Functional
outputs TRIP-TRIP and TRIP-TR3P should be active at each fault.
No other outputs should be active.
 ,QLWLDWHDVLQJOHSKDVHWRHDUWKIDXOWDQGVZLWFKLWRIILPPHGL
DWHO\ZKHQWKHWULSVLJQDOLVLVVXHGIRUWKHFRUUHVSRQGLQJ
SKDVH,QLWLDWHWKHVDPHIDXOWRQFHDJDLQZLWKLQWKHUHFODLP
WLPHRIWKHXVHGDXWRUHFORVLQJIXQFWLRQ
A three-phase trip must be initiated for the second fault.
Check that the corresponding trip signals appear after both faults.
If not the autoreclosing function is used the functional outputs
TRIP-TRIP, TRIP-TR1P and the corresponding phase signal
(TRIP-TRLn) should be active at each fault.
 ,QLWLDWHDVLQJOHSKDVHWRHDUWKIDXOWDQGVZLWFKLWRIILPPHGL
DWHO\ZKHQWKHWULSVLJQDOLVLVVXHGIRUWKHFRUUHVSRQGLQJ
SKDVH,QLWLDWHWKHVHFRQGVLQJOHSKDVHWRHDUWKIDXOWLQRQH
RIWKHUHPDLQLQJSKDVHVZLWKLQWKHWLPHLQWHUYDOVKRUWHUWKDQ
WZRVHFRQGVDQGVKRUWHUWKDQWKHGHDGWLPHRIWKHDXWRUH
FORVLQJIXQFWLRQZKHQLQFOXGHGLQSURWHFWLRQVFKHPH
Check that the second trip is a single-phase trip in a second initiat-
ed phase.
 ,QLWLDWHDSKDVHWRSKDVHIDXOWDQGVZLWFKLWRIILPPHGLDWHO\
ZKHQWKHWULSVLJQDOLVLVVXHGIRUWKHFRUUHVSRQGLQJWZRSKDV
HV,QLWLDWHDQRWKHUSKDVHWRSKDVHIDXOWQRWEHWZHHQWKH
VDPHSKDVHVZLWKLQWKHWLPHVKRUWHUWKDQVHFRQGV
Check, that the output signals, issued for the first fault, correspond
to two-phase trip for included phases.
The output signals for the second fault must correspond to the
three-phase tripping action.
 &RPSOHWLQJWKHWHVW
Continue to test another function or complete the test by setting the test mode to off.