Hitachi Relion 670 Series Commissioning Manual page 202

Section 11
Testing functionality by secondary injection
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.
11.9.1.1 Verifying the settings
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.
11.9.1.2 Completing the test
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.
11.9.2 Fuse failure supervision FUFSPVC
Prepare the IED for verification of settings as outlined in section
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.
11.9.2.1 Checking that the binary inputs and outputs trip 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 89bS binary input.
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3. Disconnect the dc voltage from the 89b 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.
6. Disconnect one of the phase voltages and observe the logical output signals on the binary outputs
of the IED.
BLKV and BLKZ signals should appear simultaneously wether the BLKV and BLKZ reset depends
on the setting SealIn "on" or "off". If "on" no reset, if "off" reset.
7. After more than 5 seconds disconnect the remaining two-phase voltages and all three currents.
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The signal BLKV should appear with almost no time delay.
The signals BLKZ and 3PH should not appear on the IED.
Only the distance protection function can trip.
Undervoltage-dependent functions must not trip.
The BLKVand BLKZ signals should appear without any time delay.
All undervoltage-dependent functions must be blocked.
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1MRK506371-UUS Rev. M
"Requirements" and section
Line distance protection REL670
Commissioning manual
M12917-31 v8
M12917-43 v4
M1405-2 v8
"Preparing
M1405-9 v8