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Section 10
Testing functionality by secondary injection
7.
Check that STALARM signal is set after 1.0s and backup trip is blocked.
8.
Reset START signal after 3.5s, ensure that STALARM reset immediately.
9.
Set START after 3.6s, ensure that backup trip is set after t2 backup trip delay has expired
(3.750 s).
10.4.6.13
Test of FollowStart&Mode behaviour
1.
Set StartMode = FollowStart&Mode.
2.
Set FunctionMode = Current.
3.
Set RetripMode = UseFunctionMode.
4.
Use default value for tStartTimeout = 1.0 s.
5.
Use default value for time delay backup trip t2 = 0.150 s.
6.
Use default value for time delay re-trip t1 = 0.000 s.
7.
Leave the inputs for CB close inactivated. These signals should not influence.
8.
Apply START signal, and after 0.200 s apply the current above the set IPh> value.
9.
Check that STALARM does not come and that re-trip TRRET is instantly set at 0.200s while the
backup trip TRBU set only when t2 expires at 0.200 + 0.150s.
10.4.6.14
Test of FollowStart behaviour
1.
Set StartMode = FollowStart.
2.
Set FunctionMode = Current.
3.
Set RetripMode = UseFunctionMode.
4.
Use default value for tStartTimeout = 1.0 s.
5.
Use for example the default value for time delay backup trip t2 = 0.150 s.
6.
Use for example the default value for time delay retrip t1 = 0.000 s.
7.
Leave the inputs for CB close inactivated. These signals should not influence.
8.
Apply START signal, and after 0.200 s apply the current above the set IPh> value.
9.
Check that STALARM does not come and that both re-trip TRRET and backup trip TRBU
comes instantly at 0.200 s (that is, as soon as current is given to the function).
10.4.6.15
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
10.4.7
Breaker failure protection, single phase version CCSRBRF
Prepare the IED for verification of settings as outlined in section
section
The parameters for the Breaker failure protection, single phase version CCSRBRF are set via the
local HMI or PCM600.
The breaker failure protection, single phase version function CCSRBRF must be tested in
combination with some other function that provides a START signal. An external START signal can
also be used.
CCSRBRF has to be set and configured before the testing can start. CCSRBRF is highly flexible in
that it permits a choice of functional and tripping modes. The various modes are checked at the
factory as part of the design verification. In certain cases only modes with a high probability of
coming into operation need to be checked, in order to verify the configuration and settings.
Testing requirements
88
"Preparing for test"
in this chapter.
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"Requirements"
and
Busbar protection REB670
Commissioning manual
M12104-72 v5
SEMOD128582-3 v5
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