Observe to not exceed the maximum permitted overloading of the current
circuits in the IED.
4.
Switch the fault current on and measure the operating time of BRPTOC.
Use the TRIP signal from the configured binary output to stop the timer.
5.
Activate the input BLOCK on the BRPTOC function block.
6.
Switch on the fault current (110% of the setting).
No TRIP signal should appear.
7.
Switch off the fault current.
8.
For a short while inject a current (fault current) in same phase to about 90%
of the set operating current, and switch the current off.
9.
Switch the fault current on.
No TRIP signal should appear.
10. Switch off the fault current.
11. If required, reset the RELEASE binary input.
12. Switch the fault current on.
No TRIP signal should appear.
13. Switch the fault current off.
10.5.8.2
Completing the test
M14922-50 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.
10.5.9
Tank overcurrent protection TPPIOC
GUID-07652C06-4420-43ED-88DB-13BB70666988 v2
Prepare the IED for verification of settings outlined in Section
.
Values of the logical signals for TPPIOC are available on the local HMI under
Main menu/Test/Function status/Current Protection/TPPIOC (64, IN>>>)/
TPPIOC: 1
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.
10.5.9.1
Verifying the signals and settings
GUID-9B159033-3401-4CCC-9423-76AC73EA2E3F v2
1.
Inject current into the IED with an initial value below set value
I>
.
2.
Increase the injected current until the TRIP signal appears and note the
operate value of the tested functionality.
3.
Decrease the current slowly and note the reset value with TRIP signal resets.
1MRK 506 377-UEN C
Section 10
Testing functionality by secondary injection
Railway application RER670 2.2 IEC
119
Commissioning manual
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