Testing the reference voltage M2377-249 v51. Use the same basic test connection as in figure 64.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 thelocal HMI. Check that the two outputs are not activated.12.10.1.3 Testing the energizing check M2377-262 v6During the test of the energizing check function for a single bay arrangement, these voltageinputs are used:U-Line UL1, UL2 or UL3 line1 voltage inputs on the IEDU-Bus Bus voltage input on the IEDGeneral M2377-271 v6When testing the energizing check function for the applicable bus, arrangement shall be donefor the energizing check functions. The voltage is selected by activation of different inputs inthe 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 alternativesbelow that are applicable.Testing the dead line live bus (DLLB) M2377-276 v7The 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 alive bus.1. Apply a single-phase voltage 100%GblBaseSelBus to the U-Bus, and a single-phasevoltage 30%GblBaseSelLine to the U-Line.2. Check that the AUTOENOK and MANENOK outputs are activated after settAutoEnergrespectivelytManEnerg.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 v8The 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 alive line.1. Verify the settingsAutoEnerg orManEnerg to beDBLL.2. Apply a single-phase voltage of 30%GblBaseSelBus to the U-Bus and a single-phasevoltage of 100%GblBaseSelLine to the U-Line.3. Check that the AUTOENOK and MANENOK outputs are activated after settAutoEnergrespectivelytManEnerg.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 v7Section 12 1MRK 502 067-UEN BTesting functionality by secondary injection208Commissioning manual
