86
Communication channel test logic
(CCHT)
&KDSWHU
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LQMHFWLRQ
&RPPXQLFDWLRQFKDQQHOWHVWORJLF&&+7
Prepare the terminal for verification of settings as outlined in section “Preparing for
test” in this chapter.
7HVWLQJWKHORJLF
6HWDOOWKHWLPHUVDFFRUGLQJWRWKHUHFRPPHQGDWLRQV
$FWLYDWHWKH&&+7&5ELQDU\LQSXW
0HDVXUHWKH&&+7&6ELQDU\RXWSXW
A pulse should appear “tCS”.
$FWLYDWHWKH&&+767$57DQGZDLWORQJHUWKDQ³W:DLW´
The CCHT--ALARM should appear.
$FWLYDWHWKH&&+75(6(7WRUHVHWWKHDODUP
:KHQWKHFRPPXQLFDWLRQFKDQQHOLVFRQQHFWHGDFWLYDWHWKH
&&+767$57DQGZDLWIRUWKHVLJQDOWRFRPHEDFN
The CCHT--CHOK should appear.
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WLQJWKHWHVWPRGHWRRII
Summary of Contents for REL 551 2.3 Series
Page 16: ...10 Note signs KDSWHU 6DIHW LQIRUPDWLRQ ...
Page 44: ...38 Checking the binary I O circuits KDSWHU KHFNLQJ WKH H WHUQDO FLUFXLWU ...
Page 52: ...46 Checking the self supervision signals KDSWHU QHUJLVLQJ WKH WHUPLQDO ...
Page 140: ...134 Testing the interaction of the distance protection KDSWHU 7HVWLQJ WKH SURWHFWLRQ V VWHP ...