ABB REL 551 2.3 Series Installation And Comissioning Manual page 129


Trip logic (TR)
 ,QLWLDWH D WKUHHSKDVH 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 VLQJOHSKDVHWRHDUWK 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 VLQJOHSKDVHWRHDUWK IDXOW DQG VZLWFK LW RII LPPHGL
DWHO\ ZKHQ WKH WULS VLJQDO LV LVVXHG IRU WKH FRUUHVSRQGLQJ
SKDVH ,QLWLDWH WKH VHFRQG VLQJOHSKDVHWRHDUWK IDXOW LQ RQH
RI WKH UHPDLQLQJ SKDVHV ZLWKLQ WKH WLPH LQWHUYDO VKRUWHU WKDQ
WZR VHFRQGV DQG VKRUWHU WKDQ WKH GHDGWLPH 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 SKDVHWRSKDVH IDXOW DQG VZLWFK LW RII LPPHGLDWHO\
ZKHQ WKH WULS VLJQDO LV LVVXHG IRU WKH FRUUHVSRQGLQJ WZR SKDV
HV ,QLWLDWH DQRWKHU SKDVHWRSKDVH 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.
&KDSWHU 
9HULI\LQJ VHWWLQJV E\ VHFRQGDU\
LQMHFWLRQ
123