ABB RELION REB670, Руководство по вводу в эксплуатацию

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10.4.4.1 Completing the test
SEMOD53296-122 v4
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.
10.4.5 Thermal overload protection, two time constants TRPTTR
SEMOD53632-3 v5
Prepare the IED for verification of settings outlined in Section "Preparing the IED
to verify settings" .
10.4.5.1 Checking operate and reset values
SEMOD53632-11 v7
1. Connect symmetrical three-phase currents to the appropriate current terminals
of the IED.
2. Set the Time constant 1 ( Tau1 ) and Time Constant 2 ( Tau2 ) temporarily to 1
minute.
3. Set the three-phase injection currents slightly lower than the set operate value
of stage
IBase1 , increase the current in phase L1 until stage IBase1 operates
and note the operate value.
Observe the maximum permitted overloading of the current
circuits in the IED.
4. Decrease the current slowly and note the reset value.
Check, in the same way, the operate and reset values of
IBase1 for phases L2
and L3.
5. Activate the cooling input signal, thus switching to base current IBase2 .
6. Check the operate and reset values (for all three phases) for IBase2 in the
same way as described above for stage IBase1 .
7. Deactivate the input signal for stage IBase2 .
8. Set the time constant for IBase1 in accordance with the setting plan.
9. Set the injection current for phase L1 to 1.50 · IBase1 .
10. Connect a trip output contact to the timer and monitor the output of contacts
ALARM1 and ALARM2 to digital inputs in test equipment.
Read the heat content in the thermal protection from the local HMI and wait
until the content is zero.
11. Switch on the injection current and check that ALARM1 and ALARM2
contacts operate at the set percentage level and that the operate time for
tripping is in accordance with the set Time Constant 1 (
Tau1 ).
With setting Itr = 101% IBase1 and injection current 1.50 · IBase1 , the trip
time from zero content in the memory shall be 0.60 · Time Constant 1 ( Tau1 ).
12. Check that all trip and alarm contacts operate according to the configuration
logic.
1MRK 505 372-UEN A
Section 10
Testing functionality by secondary injection
Busbar protection REB670 2.2 IEC 95
Commissioning manual