Wiring Test - LOVATO ELECTRIC DMG700 Manuel D'application

WIRING TEST

– The wiring test allows to verify if the connection of the DMG device has been done properly.
– To be able to execute the test, the device must be connected to an active plant, with the following conditions:
• three-phase system with all phases present (V > 50VAC PH-N)
• current flowing in each phase > 1% of the CT primary.
• positive flow of energies (that is a normal plant where the inductive load draws power from the grid).
– To launch test execution, enter commands menu and select the required command per commands menu instructions.
– The test allows to verify the following points:
• reading of the three phases
• phase sequence
• voltage imbalance
• reverse polarity of one or more CT
• mismatch between voltage and current phases.
– If the test does not succeed, the display shows the reason of the failure.
– If instead the test succeeds, then the condition is stored in the non-volatile memory, and a message that states the test successfully completed is shown in the information page.
1 - Test sequence
2 - Test result
G
B
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