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Section 7
Testing functionality
7.5.11.2
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
VR2PVOC(51V,I>U<)/1:VR2PVOC for the function, or for each individual function in a chain, to
be tested next. Remember to set the parameter
that has been tested.
7.6
Testing voltage protection functions
7.6.1
Two step undervoltage protection UV2PTUV
Prepare the IED for verification of settings as outlined in the section
verify
settings".
Values of the logical signals for UV2PTUV are available on the local HMI under Main menu/
Tests/Function status/Voltage/UV2PTUV(27,2U<)/1:UV2PTUV. The Signal Monitoring in
PCM600 shows the same signals that are available on the local HMI.
7.6.1.1
Verifying the setting
Verification of START value and time delay to operate for Step1
1.
Check that the IED settings are appropriate, especially the START value, the definite time
delay and the
2.
Supply the IED with three-phase voltages at their rated values.
3.
Slowly decrease the voltage in one of the phases, until the START signal appears.
4.
Note the operate value and compare it with the set value.
5.
Increase the measured voltage to rated load conditions.
6.
Check that the START signal resets.
7.
Instantaneously decrease the voltage in one phase to a value about 20% lower than the
measured operate value.
8.
Measure the time delay for the TRIP signal, and compare it with the set value.
Extended testing
1.
The test above can now be repeated for step 2.
2.
The tests above can be repeated for
3.
The tests above can be repeated to check security, that is, the START 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.
7.6.1.2
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
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
has been tested.
66
Blocked to No under Main menu/Tests/Function test modes/Current/
1 out of 3 operation mode.
Blocked to No under Main menu/Tests/Function test modes/Voltage/
© Copyright 2011 ABB. All rights reserved
Blocked to Yes , for each individual function
2 out of 3 and for 3 out of 3 operation mode.
Blocked to Yes , for each individual function that
1MRK 502 035-UEN A
GUID-8A33AACE-7B89-4981-A872-78044BB1FD0D v1
TestMode to Off
M13796-2 v6.1.1
"Preparing the IED to
M13796-29 v5
M13796-35 v5
M13796-25 v5
TestMode to Off
Generator protection REG650
Commissioning manual
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