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.
6.9.4
Local acceleration logic ZCLCPLAL
Prepare the IED for verification of settings as outlined in
.
Values of the logical signals for ZCLCPLAL are available on the local HMI under
Main menu/Tests/Function status/Scheme communication/ZCLCPLAL/
1:ZCLCPLAL
. The Signal Monitoring in PCM600 shows the same signals that are
available on the local HMI.
The logic is checked during the secondary injection test of the impedance measuring
zones.
6.9.4.1
Verifying the settings
1.
Provide the IED with conditions equivalent to normal load for at least two seconds.
2.
Deactivate the conditions for accelerated function.
3.
Apply a phase-to-ground fault at 100% of line impedance.
4.
Check that the fault is tripped with the second zone time delay.
5.
Provide the IED with conditions equivalent to normal load for at least two seconds.
6.
Activate the condition for accelerated function either by the autorecloser or by the
loss-of-load.
7.
Apply a phase-to-ground fault at 100% of line impedance.
8.
Check that the fault is tripped instantaneously.
6.9.4.2
Completing the test
Continue to test another function or end the testing by setting the parameter
TestMode
to
Disabled
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/Scheme communication/ZCLCPLAL/1:ZCLCPLAL
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.
6.9.5
Scheme communication logic for residual overcurrent
protection ECPSCH (85)
Prepare the IED for verification of settings as outlined in
.
1MRK 506 331-UUS A
Section 6
Testing functionality
131
Commissioning Manual
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