ABB RED670 Commissioning Manual page 190

Section 11
Testing functionality by secondary injection
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11.5.14.2 Measuring the trip and time limit of set values
1. Check that the input logical signal BLOCK to the BRCPTOC (46) function block is logical zero and
note on the local HMI that the output signal TRIP from the BRCPTOC (46) function block is equal to
the logical 0.
2. Set the measured current (fault current) in one phase to about 110% of the set operating current
Pickup_PH.
Observe to not exceed the maximum permitted overloading of the current circuits in the terminal.
3. Switch on the fault current and measure the operating time of BRCPTOC (46).
TRIP is controlled by Gate 13 in the configuration.
Use the TRIP signal from the configured binary output to stop the timer.
4. Compare the measured time with the set value tOper.
5. Activate the BLOCK binary input.
6. Switch on the fault current (110% of the setting) and wait longer than the set value tOper.
No TRIP signal should appear.
7. Switch off the fault current.
8. Set the measured current (fault current) in same phase to about 90% of the set operating current
Pickup_PH. Switch off the current.
9. Switch on the fault current and wait longer than the set value tOper.
No TRIP signal should appear.
10. Switch off the fault current.
11.5.14.3 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.
11.5.15 Voltage-restrained time overcurrent protection VRPVOC(51V)
Prepare the IED for verification of settings as outlined in section
for test" in this chapter.
11.5.15.1 Function revision history
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Product History
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2.2.4 -
2.2.4 -
2.2.5 A fixed time delay of 50 ms is added before asserting START signal.
Product History
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2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
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Line differential protection RED670
Commissioning manual
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