Measuring The Operate Limit Of Set Values; Completing The Test; Four Step Residual Overcurrent Protection Ef4Ptoc (51N/67N); Four Step Directional Residual Overcurrent Protection - ABB Relion 650 Series Commissioning Manual
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Also See for Relion 650 Series:
- Technical manual (754 pages) ,
- Applications manual (382 pages) ,
- Commissioning manual (182 pages)
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Section 7
Testing functionality
7.3.3.1
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.
Disable the fault current
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.
7.3.3.2
Completing the test
Continue to test another function or end the testing by setting the parameter
Disabled under Main menu/Tests/IED test mode/1:TESTMODE. If another function is tested, then
set the parameter
EFPIOC(50N,IN>>)/1:EFPIOC for the function, or for each individual function in a chain, to be
tested next. Remember to set the parameter
been tested.
7.3.4
Four step residual overcurrent protection EF4PTOC (51N/67N)
Prepare the IED for verification of settings as outlined in
Values of the logical signals for EF4PTOC (51N67N) are available on the local HMI under Main
menu/Tests/Function status/Current/EF4PTOC(51N67N,4IN>)/X:EF4PTOC. The Signal
Monitoring in PCM600 shows the same signals that are available on the local HMI.
7.3.4.1
Four step directional residual overcurrent protection
1.
Connect the test set for single current injection to the appropriate IED terminals.
Connect the injection current to terminals A and neutral, or to terminals N and neutral.
2.
Set the injected polarizing voltage slightly larger than the set minimum polarizing voltage
(default 1% of Vn) and set the injection current to lag the voltage by an angle equal to the set
reference characteristic angle (
If reverse directional function is selected, set the injection current to lag the polarizing
voltage by an angle equal to RCA+ 180°.
3.
Increase the injected current and note the value at which the studied step of the function
operates.
4.
Decrease the current slowly and note the reset value.
5.
If the test has been performed by injection of current in phase A, repeat the test when
injecting current into terminals B and C with a polarizing voltage connected to terminals B
respectively C.
6.
Block lower set steps when testing higher set steps according to the instructions that follow.
7.
Connect a trip output contact to a timer.
8.
Set the injected current to 200% of the operate level of the tested step, 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
9.
Check that all trip and trip contacts operate according to the configuration (signal matrixes)
10.
Reverse the direction of the injected current and check that the step does not operate.
44
Blocked to No under Main menu/Tests/Function test modes/Current/
AngleRCA ) if the forward directional function is selected.
txMin .
© Copyright 2011 ABB. All rights reserved
Blocked to Yes , for each individual function that has
6.1"Preparing the IED to verify
1MRK 511 248-UUS A
SEMOD52967-11 v5
SEMOD52967-24 v5
TestMode to
SEMOD53296-3 v6
settings".
SEMOD53296-208 v4
Bay control REC650
Commissioning manual
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