6.6 Testing secondary system supervision functions
6.6.1 Current circuit supervision CCSRDIF (87)
Prepare the IED for verification of settings as outlined in 5.1 "Preparing the IED to verify
settings".
Values of the logical signals for CCSRDIF (87) are available on the local HMI under
Main menu/Tests/Function status/Secondary system supervision/
CCSRDIF(87,INd)/CCSRDIF:X. The Signal Monitoring in PCM600 shows the same
signals that are available on the local HMI.
The Current circuit supervision function CCSRDIF (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.
6.6.1.1 Verifying the settings
1. Check the input circuits and the operate 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 IREFSMPL.
4. Increase slowly the current in one of the phases current input and check that FAIL
output is obtained when the current is about 0.9 · IBase.
6.6.1.2 Completing the test
Continue to test another function or end the testing by setting the parameter TestMode to
Disabled under Main menu/Tests/IED test mode/TESTMODE:1. If another function is
tested, then set the parameter Blocked to No under Main menu/Tests/Function test
modes/Secondary system supervision/CCSRDIF(87,INd)/CCSRDIF:X for the
function, or for each individual function in a chain, to be tested next. Remember to set the
parameter Blocked to Yes, for each individual function that has been tested.
6.6.2 Fuse failure supervision SDDRFUF
Prepare the IED for verification of settings as outlined in
5.1 "Preparing the IED to verify
settings".
Section 6 1MRK 505 293-UUS A
Testing functionality
86
Commissioning manual
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