Completing The Test; Fuse Failure Supervision Fufspvc; Checking That The Binary Inputs And Outputs Operate As Expected - ABB RELION REG670 Commissioning Manual

Section 12
Testing functionality by secondary injection
1. Check the input circuits and the operate value of the
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 ·
3. Inject a current 0.1 ·
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 ·
12.9.1.2

Completing the test

Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
12.9.2

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.
12.9.2.1

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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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.
6. Disconnect one of the phase voltages and observe the logical output signals on the
binary outputs of the IED.
BLKU and BLKZ signals should appear simultaneously wether the BLKU and BLKZ reset
depends on the setting
7. After more than 5 seconds disconnect the remaining two-phase voltages and all three
currents.
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8. Establish normal voltage and current operating conditions simultaneously and observe
the corresponding output signals.
They should change to logical 0 as follows:
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•
200
IBase .
IBase to the reference current input I5.
"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.
SealIn "on" or "off". If "on" no reset, if "off" reset.
There should be no change in the high status of the output signals BLKU and BLKZ.
The signal 3PH will appear.
Signal 3PH after about 25ms
Signal BLKU after about 50ms
Signal BLKZ after about 200ms
IMinOp current level detector by
IBase .
TestMode setting to Off .
"Requirements"
1MRK 502 067-UEN B
M12917-43 v4
M1405-2 v8
and
M1405-9 v8
Commissioning manual