ABB RET650 2.1 IEC, Руководство по вводу в эксплуатацию

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If 1 out of 3 currents for operation is chosen: The voltage angle of phase L1
is the reference.
If
2 out of 3 currents for operation is chosen: The voltage angle of phase L1
– the voltage angle of L2 is the reference.
If
3 out of 3 currents for operation is chosen: The voltage angle of phase L1
is the reference.
If reverse directional function is selected, set the injection current to lag the
polarizing voltage by an angle equal to 260° (equal to 80° + 180°).
3.2. Increase the injected current, note the operate value of the tested step of the
function and compare it to the set value.
3.3. Decrease the current slowly, note the reset value and compare it to the reset
ratio 95%.
4. If the test has been performed by injection of current in phase L1, repeat the test,
injecting current into phases L2 and L3 with polarizing voltage connected to
phases L2, respectively L3 (
1 out of 3 currents for operation).
5. If the test has been performed by injection of current in phases L1 – L2, repeat
the test, injecting current into phases L2 – L3 and L3 – L1 with the appropriate
phase angle of injected currents.
6. Connect a trip output contact to a timer.
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
txMin .
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.
10. If 2 out of 3 or 3 out of 3 currents for operation is chosen: Check that the function
will not 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 TESTMODE setting
to Off . 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 outlined in section "Preparing the IED to
verify settings" .
To verify the settings the following fault type should be tested:
• Phase-to-earth fault
1MRK 504 160-UEN -
Section 10
Testing functionality by secondary injection
Transformer protection RET650 2.1 IEC 73
Commissioning manual