
Values of the logical signals for SAPTUF are available on the local HMI under
Main menu/Tests/Function status/Frequency/SAPTUF(81,f<)/X:SAPTUF
. The
Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
6.6.1.1
Verifying the settings
Verification of START value and time delay to operate
1.
Check that the IED settings are appropriate, especially the START value and
the definite time delay.
2.
Supply the IED with three-phase voltages at their rated values.
3.
Slowly decrease the frequency of the applied voltage, until the START signal
appears.
4.
Note the operate value and compare it with the set value.
5.
Increase the frequency until rated operating levels are reached.
6.
Check that the START signal resets.
7.
Instantaneously decrease the frequency of the applied voltage to a value about
20% lower than the operate value.
8.
Measure the time delay of the TRIP signal, and compare it with the set value.
Extended testing
1.
The test above can be repeated to check the time to reset.
2.
The tests above can be repeated to test the frequency dependent inverse time
characteristic.
Verification of the low voltage magnitude blocking
1.
Check that the IED settings are appropriate, especially the
StartFrequency
and the
tDelay
and the
MinValFreqMeas
in the SMAI preprocessing function.
2.
Supply the IED with three-phase voltages at rated values.
3.
Slowly decrease the magnitude of the applied voltage, until the BLKDMAGN
signal appears.
4.
Note the voltage magnitude value and compare it with the SMAI set value
MinValFreqMeas
.
5.
Slowly decrease the frequency of the applied voltage, to a value below
StartFrequency
.
6.
Check that the START signal does not appear.
7.
Wait for a time corresponding to
tDelay
, and check that the TRIP signal does
not appear.
6.6.1.2
Completing the test
Continue to test another function or end the testing by setting the parameter
TestMode
to
Off
under
Main menu/Tests/IED test mode/1:TESTMODE
. If
another function is tested, then set the parameter
Blocked
to
No
under
Main menu/
Section 6
1MRK 504 126-UEN -
Testing functionality
62
Commissioning Manual
Содержание ret650
Страница 1: ...Relion 650 series Transformer protection RET650 Commissioning Manual...
Страница 2: ......
Страница 8: ......
Страница 14: ...6...
Страница 20: ...12...
Страница 26: ...18...
Страница 38: ...30...
Страница 46: ...38...
Страница 86: ...78...
Страница 108: ...100...
Страница 109: ...101...