Hitachi Relion 670 Series Commissioning Manual page 213

1MRK506371-UUS Rev. M
Test with a frequency difference outside the set limits for manual and auto synchronizing check
respectively.
1. Apply voltages V-Line equal to 100% GblBaseSelLine and V-Bus equal to 100% GblBaseSelBus,
with a frequency difference equal to 0 mHz and a phase difference lower than the set value.
2. Check that the AUTOSYOK and MANSYOK outputs are activated.
3. Apply voltage to the V-Line equal to 100% GblBaseSelLine with a frequency equal to 50 Hz and
voltage V-Bus equal to 100% GblBaseSelBus, with a frequency outside the set limit.
4. Check that the two outputs are not activated. The test can be repeated with different frequency
values to verify that the function trips for values lower than the set ones. If a modern test set is
used, the frequency can be changed continuously.
Testing the reference voltage
1. Use the same basic test connection as in figure 50.
The voltage difference between the voltage connected to V-Bus and V-Line should be 0%, so that
the AUTOSYOK and MANSYOK outputs are activated first.
2. Change the V-Line voltage connection to V-Line2 without changing the setting on the local HMI.
Check that the two outputs are not activated.
11.10.1.3 Testing the energizing check
During the test of the energizing check function for a single bay arrangement, these voltage inputs are
used:
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% VBase and dead voltage level to fixed 40% VBase.
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% GblBaseSelBus to the V-Bus, and a single-phase voltage 30%
GblBaseSelLine to the V-Line.
2. Check that the AUTOENOK and MANENOK outputs are activated after set tAutoEnerg respectively
tManEnerg.
3. Increase the V-Line to 60% GblBaseSelLine and V-Bus to be equal to 100% GblBaseSelBus. The
outputs should not be activated.
4. The test can be repeated with different values on the V-Bus and the V-Line.
Line distance protection REL670
Commissioning manual
VA, VB or VC line1 voltage inputs on the IED
Bus voltage input on the IED
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Section 11
Testing functionality by secondary injection
M2377-249 v5
M2377-262 v6
M2377-271 v6
M2377-276 v7
207