13.9.1.1 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.
13.9.1.2 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 their original values, if they were
changed for testing purposes.
13.9.2 Fuse failure supervision FUFSPVC
M1405-2 v8
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to
verify settings".
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.
13.9.2.1 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.
• 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.
3. Disconnect the dc voltage from the 89b binary input terminal.
4. Connect the nominal dc voltage to the MCBOP binary input.
1MRK 502 073-UUS A Section 13
Testing functionality by secondary injection
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 241
Commissioning manual
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