Four Step Directional Residual Overcurrent Protection; Four Step Non-Directional Residual Overcurrent Protection; Completing The Test; Thermal Overload Protection, Two Time Constants Trpttr - ABB Relion 650 Series Commissioning Manual

Section 7
Testing functionality
Values of the logical signals for EF4PTOC 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.
7.4.2.1

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 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 voltage by an angle equal to the
set reference characteristic angle (
selected.
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 L1, repeat the test when
injecting current into terminals L2 and L3 with a polarizing voltage connected to
terminals L2 respectively L3.
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 start contacts operate according to the configuration (signal
matrixes)
10. Reverse the direction of the injected current and check that the step does not operate.
11. Check that the protection does not operate when the polarizing voltage is zero.
12. Repeat the above described tests for the higher set steps.
13. Finally, check that start and trip information is stored in the event menu.
7.4.2.2

Four step non-directional residual overcurrent protection

1. Do as described in
applying any polarizing voltage.
7.4.2.3

Completing the test

Continue to test another function or end the testing by setting the parameter
under Main menu/Tests/IED test mode/1:TESTMODE. If another function is tested, then set
the parameter
EF4PTOC(51N67N,4IN>)/X:EF4PTOC for the function, or for each individual function in a chain,
to be tested next. Remember to set the parameter
that has been tested.
7.4.3

Thermal overload protection, two time constants TRPTTR

Prepare the IED for verification of settings as outlined in the section
verify settings".
40
txMin .
"Four step directional residual overcurrent
Blocked to No under Main menu/Tests/Function test modes/Current/
© Copyright 2011 ABB. All rights reserved
AngleRCA ) if the forward directional function is
Blocked to Yes , for each individual function
1MRK 505 264-UEN A
SEMOD53296-208 v3
SEMOD53296-202 v3
protection", but without
SEMOD53296-122 v4
TestMode to Off
SEMOD53632-3 v5.1.1
"Preparing the IED to
Busbar protection REB650
Commissioning manual