Insulation Test - V&T E5-H Series User Manual

8.4 Insulation Test

Since the inverter has undergone insulation test upon its ex−factory, the user shall not perform such test
as much as possible under general condition. If the test is unavoidable, please perform the test strictly
according to the following procedures, or it may damage the inverter.
It shall perform dielectric test strictly, or it may damage the inverter. If the dielectric test is unavoidable,
please contact our company.
Main Circuit Insulation Test
Utilize 500VDC megameter to perform test under condition of main power shutdown;
Disconnect all the control board circuits to prevent the control circuits from connecting with the
test voltage. For the inverter with power level of E5−H−4T11G and E5−H−4T15G, it must
disconnect the terminal J1 on the drive board and the PE. For the inverter with power level of
E5−H−4T18.5G or above, it must disconnect three pieces of cables entry to the surge
suppressing circuit. Pack the disconnected cable heads with insulating tapes properly;
The main circuit terminal shall be connected with public conducting wires:
Figure 8−1 Main Circuit Insulation Test for E5−H−4T0.75G to E5−H−4T15G
Figure 8−2 Main Circuit Insulation Test for E5−H−4T18.5G to E5−H−4T500G
Megameter voltage can only be imposed between the public conducting wire of the main circuit
and the PE terminal;
The normal indication value of the megameter is 200MΩ or above.
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E5−H High Performance Universal Inverter
Megameter
Megameter
Megameter
Megameter
Chapter 8 Routine Repair and Maintenance
User Manual
Inverter
Inverter
Inverter
Inverter