11.9.2.6 Completing the test
SEMOD56488-99 v2
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.10 Secondary system supervision
SEMOD53556-1 v1
11.10.1 Current circuit supervision CCSSPVC (87)
M12917-25 v8
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to verify settings".
The Current circuit supervision function CCSSPVC (87) is conveniently tested with the same three-phase
test set as used when testing the measuring functions in the IED.
The condition for this procedure is that the setting of IMinOp is lower than the setting of Pickup_Block.
11.10.1.1 Verifying the settings
M12917-31 v8
1. Check the input circuits and the trip value of the IMinOp current level detector by injecting current,
one phase at a time.
2. Check the phase current blocking function for all three phases by injecting current, one phase at a
time. The output signals shall reset with a delay of 1 second when the current exceeds 1.5 · IBase.
3. Inject a current 0.1 · IBase to the reference current input Analogue channel ID current input 5.
4. Increase slowly the current in one of the phases and check that FAIL output is obtained when the
current is above 0.9 · IBase.
11.10.1.2 Completing the test
M12917-43 v4
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.10.2 Fuse failure supervision FUFSPVC
M1405-2 v8
Prepare the IED for verification of settings as outlined in section
"Requirements" and section "Preparing
for test" in this chapter.
The verification is divided in two main parts. The first part is common to all fuse failure supervision
options, and checks that binary inputs and outputs trip as expected according to actual configuration. In
the second part the relevant set trip values are measured.
11.10.2.1 Checking that the binary inputs and outputs trip as expected
M1405-9 v8
1. Simulate normal operating conditions with the three-phase currents in phase with their
corresponding phase voltages and with all of them equal to their rated values.
2. Connect the nominal dc voltage to the 89bS binary input.
Section 11 1MRK 504 165-UUS Rev. J
Testing functionality by secondary injection
234 Transformer protection RET670
Commissioning manual
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