Measuring The Operate Limit Of Set Values; Completing The Test; Four Step Residual Overcurrent Protection Ef4Ptoc; Four Step Directional Residual Overcurrent Protection - ABB Relion 650 Series Commissioning Manual

Section 5
Testing functionality
5.3.3.1
5.3.3.2
5.3.4
5.3.4.1
40
• 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.

Measuring the operate limit of set values

Procedure
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.

Completing the test

Continue to test another function or end the testing by setting the parameter
TestMode to Off under Main menu/Tests/IED test mode/1:TESTMODE. If
another function is tested, then set the parameter Blocked to No, under Main menu/
Tests/Function test modes/<Function group>/<Function>/<1:Function> for the
function, or for each individual function in a chain, to be tested next. Remember to
set the parameter Blocked to Yes, for each individual function that has been tested.

Four step residual overcurrent protection EF4PTOC

Prepare the IED for verification of settings as outlined in
verify settings".
Values of the logical signals are available on the local HMI under: Main menu/
Tests/Function status/<Function group>/<Function>/<1:Function>. The Signal
monitoring tool in PCM600 shows the same signals that are available on the LHMI.

Four step directional residual overcurrent protection

Procedure:
1. Connect the test set for single current injection to the appropriate IED terminals.
Connect the injection current to terminals L1 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 Ur) and set the injection current to lag the
1MRK 511 209-UEN -
4.1 "Preparing the IED to
REC650
Commissioning Manual