Secondary System Supervision; Current Circuit Supervision Ccsspvc; Verifying The Settings; Completing The Test - Hitachi Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
11.9

Secondary system supervision

11.9.1

Current circuit supervision CCSSPVC

Prepare the IED for verification of settings outlined in Section
The Current circuit supervision function CCSSPVC 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 Ip>Block.
11.9.1.1

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 I5.
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.
11.9.1.2

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.
11.9.2

Fuse failure supervision FUFSPVC

Prepare the IED for verification of settings as outlined in section
section
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 operate as expected according to actual
configuration. In the second part the relevant set operate values are measured.
11.9.2.1

Checking that the binary inputs and outputs operate as expected

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 DISCPOS binary input.
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•
•
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3. Disconnect the dc voltage from the DISCPOS binary input terminal.
4. Connect the nominal dc voltage to the MCBOP binary input.
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5. Disconnect the dc voltage from the MCBOP binary input terminal.
150
"Preparing for test" in this chapter.
The signal BLKU should appear with almost no time delay.
The signals BLKZ and 3PH should not appear on the IED.
Only the distance protection function can operate.
Undervoltage-dependent functions must not operate.
The BLKUand BLKZ signals should appear without any time delay.
All undervoltage-dependent functions must be blocked.
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1MRK 511 403-UEN Rev. L
"Preparing the IED to verify
"Requirements" and
Bay control REC670
Commissioning manual
SEMOD53556-1 v1
M12917-25 v8
settings".
M12917-31 v8
M12917-43 v4
M1405-2 v8
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