Completing The Test; Fuse Failure Supervision Fufspvc; Checking That The Binary Inputs And Outputs Operate As Expected - ABB Relion 670 Series REL670 Commissioning Manual

1MRK 506 355-UEN A
10.9.1.2
10.9.2
10.9.2.1
Line distance protection REL670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
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 current input and check that
FAIL output is obtained when the current is about 0.9 · IBase.

Completing the test

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.

Fuse failure supervision FUFSPVC

Prepare the IED for verification of settings outlined in section
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.

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.
• 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.
Section 10
"Preparing the IED to
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