1.
The test above can now be repeated for step
.
2.
The tests above can be repeated for
2 out of 3
and for
3 out of 3
operation mode.
3.
The tests above can be repeated to check security, that is, the PICKUP and
operate signals, that are not supposed to appear, - do not.
4.
The tests above can be repeated to check the time to reset.
5.
The tests above can be repeated to test the inverse time characteristic.
6.5.1.2
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/Voltage/UV2PTUV(27,2U<)/1:UV2PTUV
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.
6.5.2
Two step overvoltage protection OV2PTOV (59)
Prepare the IED for verification of settings as outlined in
Values of the logical signals for OV2PTOV (59) are available on the local HMI under
Main menu/Tests/Function status/Voltage/OV2PTOV(59,2U>)/1:OV2PTOV
. The
Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
6.5.2.1
Verifying the settings
1.
Apply single-phase voltage below the set value
Pickup1
.
2.
Slowly increase the voltage until the PU_ST1 signal appears.
3.
Note the operate value and compare it with the set value.
4.
Switch the applied voltage off.
5.
Set and apply about 20% higher voltage than the measured operate value for one
phase.
6.
Measure the time delay for the TRST1 signal and compare it with the set value.
7.
6.5.2.2
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/Voltage/OV2PTOV(59,2U>)/1:OV2PTOV
for the function, or
Section 6
1MRK 506 331-UUS A
Testing functionality
92
Commissioning Manual
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