Testing the reference voltage
M2377-249 v5
1.
Use the same basic test connection as in figure
The voltage difference between the voltage connected to U-Bus and U-Line should be 0%,
so that the AUTOSYOK and MANSYOK outputs are activated first.
2.
Change the U-Line voltage connection to U-Line2 without changing the setting on the
local HMI. Check that the two outputs are not activated.
12.10.1.3
Testing the energizing check
M2377-262 v6
During the test of the energizing check function for a single bay arrangement, these voltage
inputs are used:
U-Line
UL1, UL2 or UL3 line1 voltage inputs on the IED
U-Bus
Bus voltage input on the IED
General
M2377-271 v6
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%
UBase and dead voltage level to fixed 40% UBase.
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)
M2377-276 v7
The test should verify that the energizing check function operates for a low voltage on the U-
Line and for a high voltage on the U-Bus. This corresponds to the energizing of a dead line to a
live bus.
1.
Apply a single-phase voltage 100%
GblBaseSelBus to the U-Bus, and a single-phase
voltage 30%
GblBaseSelLine to the U-Line.
2.
Check that the AUTOENOK and MANENOK outputs are activated after set
tAutoEnerg
respectively
tManEnerg.
3.
Increase the U-Line to 60%
GblBaseSelLine and U-Bus to be equal to 100%
GblBaseSelBus. The outputs should not be activated.
4.
The test can be repeated with different values on the U-Bus and the U-Line.
Testing the dead bus live line (DBLL)
M2377-289 v8
The test should verify that the energizing check function operates for a low voltage on the U-
Bus and for a high voltage on the U-Line. This corresponds to an energizing of a dead bus to a
live line.
1.
Verify the settings
AutoEnerg or ManEnerg to be DBLL.
2.
Apply a single-phase voltage of 30%
GblBaseSelBus to the U-Bus and a single-phase
voltage of 100%
GblBaseSelLine to the U-Line.
3.
Check that the AUTOENOK and MANENOK outputs are activated after set
tAutoEnerg
respectively
tManEnerg.
4.
Decrease the U-Line to 60%
GblBaseSelLine and keep the U-Bus equal to 30%
GblBaseSelBus. The outputs should not be activated.
5.
The test can be repeated with different values on the U-Bus and the U-Line.
Testing both directions (DLLB or DBLL)
M2377-306 v7
Section 12
1MRK 502 067-UEN B
Testing functionality by secondary injection
208
Commissioning manual
