ABB RET670 Commissioning Manual page 197

Transformer protection version 2.1 ansi
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1MRK 504 154-UUS B
V-Line
V-Bus
General
When testing the energizing check function for the applicable bus, arrangement shall be done for
the energizing check functions. The voltage is selected by activation of different inputs in the
voltage selection logic.
Live voltage level is fixed to 80%
The test shall be performed according to the settings for the station. Test the alternatives below
that are applicable.
Testing the dead line live bus (DLLB)
The test should verify that the energizing check function trips for a low voltage on the V-Line and
for a high voltage on the V-Bus. This corresponds to the energizing of a dead line to a live bus.
1.
Apply a single-phase voltage 100%
30%
2.
Check that the AUTOENOK and MANENOK outputs are activated after set
respectively
3.
Increase the V-Line to 60%
The outputs should not be activated.
4.
The test can be repeated with different values on the V-Bus and the V-Line.
Testing the dead bus live line (DBLL)
The test should verify that the energizing check function trips for a low voltage on the V-Bus and
for a high voltage on the V-Line. This corresponds to an energizing of a dead bus to a live line.
1.
Verify the settings
2.
Apply a single-phase voltage of 30%
of 100%
3.
Check that the AUTOENOK and MANENOK outputs are activated after set
respectively
4.
Decrease the V-Line to 60%
The outputs should not be activated.
5.
The test can be repeated with different values on the V-Bus and the V-Line.
Testing both directions (DLLB or DBLL)
1.
Verify the local HMI settings
2.
Apply a single-phase voltage of 30%
of 100%
3.
Check that the AUTOENOK and MANENOK outputs are activated after set
respectively
4.
Change the connection so that the V-Line is equal to100%
equal to 30%
5.
The test can be repeated with different values on the V-Bus and the V-Line.
Commissioning manual
VA, VB or VC line1 voltage inputs on the IED
Bus voltage input on the IED
VBase and dead voltage level to fixed 40% VBase .
GblBaseSelLine to the V-Line.
tManEnerg .
GblBaseSelLine and V-Bus to be equal to 100% GblBaseSelBus .
AutoEnerg or ManEnerg to be DBLL .
GblBaseSelLine to the V-Line.
tManEnerg .
GblBaseSelLine and keep the V-Bus equal to 30% GblBaseSelBus .
AutoEnerg or ManEnerg to be Both .
GblBaseSelBus to the V-Bus.
tManEnerg .
GblBaseSelBus . The outputs should still be activated.
GblBaseSelBus to the V-Bus, and a single-phase voltage
GblBaseSelBus to the V-Bus and a single-phase voltage
GblBaseSelLine to the V-Line and a single-phase voltage
GblBaseSelLine and the V-Bus is
Testing functionality by secondary injection
tAutoEnerg
tAutoEnerg
tAutoEnerg
Section 10
M2377-271 v6
M2377-276 v7
M2377-289 v8
M2377-306 v7
191

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