ABB RED670 - Completing the Test; Fuse Failure Supervision FUFSPVC; Checking that the Binary Inputs and Outputs Operate as Expected

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
M12917-43 v4
Continue to test another function or end the test by changing the TESTMODE
setting to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.
11.9.2 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 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
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 DISCPOS binary input.
• 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.
3. Disconnect the dc voltage from the DISCPOS binary input terminal.
4. Connect the nominal dc voltage to the MCBOP binary input.
• The BLKUand BLKZ signals should appear without any time delay.
• All undervoltage-dependent functions must be blocked.
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.
1MRK 505 378-UEN A Section 11
Testing functionality by secondary injection
Line differential protection RED670 2.2 IEC 215
Commissioning manual