Toshiba S2E21 - Page 51

TOSHIBA
6F9EOlll
Phenomenon
Dn P28
- PRE-ALM set-
ting of 1JC
does not go
below 100%.
3n P30
- Cursor will na
move to A.LM of
1 N S T and U B
- Trip output
fails to be
produced.
- Alarm output
is not
produced.
Check point
-
.
Protection function
is locked.
Output is not
selected at RY O/P
SEL (P30).
In O/P RELAY CONPIG
(P29). the logic is
inverted.
External connection
is incorrect or
I oose.
Protection function
is locked.
--
--
lutput is not
selected-at RY O/P
SEL (P30).
In O/P RELAY CONFIG
(P29). the logic is
inverted.
3xternal connection
is incorrect or
I oose.
Possible cause
Normal.
Normal.
Normal.
Normal.
Normal.
Bad connection.
Normal.
Normal.
Normal.
Bad connection.
What to do
PRE-ALM setting of UC
has a range between
100% and 300%.
ALM setting is not
provided for I NST
and UB.
Activate the
protective function.
Select(l) to activate.
Match the logic.
Make proper
connection.
Activate the
protective function.
Select(l) to activate.
Match the logic.
Make proper
connection.
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