ABB SYN 5201 Operating Instructions Manual page 106

Operating Instructions
Test functions
Code Description
121 No parameter set
selected
122 Timeout for the start of the
test function expired
123 Start conditions for the
test function not fulfilled
abb
ABB Switzerland Ltd
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Remarks
The test function must
be carried out in
combination with a
particular paralleling
point and parameter set.
It is possible that a fault
was present when
attempting Start. This
causes the parameter
set selection to be
blocked internally.
The test function must
be started no later than
30 s after enable
(display: "Test ready")
Start conditions:
TEST ton:
One voltage must be
<U0max, the other
>Umin
Corresponding para-
meter set selected
Device blocked
TEST U-Match and
TEST f-Match:
U1 and f1, both between
95 % to 105 %
U2 and f2, both between
85 % to 115 %
Corresponding para-
meter set selected
Device blocked
Parameters INVERSE U
& TAP CHANGER=OFF
(for TEST U-Match)
Parameter INVERSE f =
OFF (for TEST f-Match)
Cancel criteria:
TEST U-Match:
 U   10 %
TEST f-Match:
 s   6 %
Document No Art Part
3BHS109762 E01
SYN 5201/SYN 5202
Remedy

Select correct parameter set

Select test function from
correct parameter set
Note : procedure for cancelling
fault:

Delete error message on LCD
by changing address twice
(e.g. and

Set test function to OFF and
save

Cancel fault and
See section 4.2 for the correct
handling of the corresponding test
function
Check fulfilment of the
corresponding conditions and if
necessary ensure that these are
fulfilled.
Caution : It is possible that a test
function other than the intended
one was started. This happens if
one forgets to set the previously-
used test function to OFF again
after use and only then start the
next test function.
By cancel of test function: raise
and lower commands exchanged?
Language Revision
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page
D 106