Completing The Test; Instantaneous Residual Overcurrent Protection Efpioc; Measuring The Operate Limit Of Set Values; Four Step Residual Overcurrent Protection, (Zero Sequence Or Negative Sequence Directionality) Ef4Ptoc - ABB RELION 650 Series Commissioning Manual

1MRK 504 160-UEN A
7. Set the injected current to 200% of the operate level of the tested stage, switch on the
current and check the time delay.
For inverse time curves, check the operate time at a current equal to 110% of the operate
current for
8. Check that all operate and start contacts operate according to the configuration (signal
matrixes).
9. Reverse the direction of the injected current and check that the protection does not
operate.
2 out of 3 or 3 out of 3 currents for operation is chosen: Check that the function will not
10. If
operate with current in one phase only.
11. Repeat the above described tests for the higher set stages.
12. Check that start and trip information is stored in the event menu.
10.4.2.2

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.
10.4.3

Instantaneous residual overcurrent protection EFPIOC

Prepare the IED for verification of settings as outlined in section
section
To verify the settings the following fault type should be tested:
• Phase-to-earth fault
Ensure that the maximum continuous current, supplied from the current source used for the
test of the IED, does not exceed four times the rated current value of the IED.
10.4.3.1

Measuring the operate limit of set values

1. Inject a phase current into the IED with an initial value below that of the setting.
2. Increase the injected current in the Ln or in the neutral (summated current input) phase
until the TRIP signal appears.
3. Switch the fault current off.
Observe to not exceed the maximum permitted overloading of the current circuits in the
IED.
4. Compare the measured operating current with the set value.
10.4.3.2 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.
10.4.4 Four step residual overcurrent protection, (Zero sequence or
negative sequence directionality) EF4PTOC
Prepare the IED for verification of settings as outlined in section
section
Commissioning manual
txMin .
"Preparing for test" in this chapter.
"Preparing for test" in this chapter.
Testing functionality by secondary injection
TESTMODE setting to Off .
"Requirements" and
TESTMODE setting to Off .
"Requirements" and
Section 10
SEMOD56287-118 v4
SEMOD52967-3 v6
SEMOD52967-11 v8
SEMOD52967-24 v5
SEMOD53296-3 v8
65