V&T Technologies Co., Ltd.
http://www.ecodrivecn.com
Chapter 8 Routine Repair and Maintenance
130
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 V5-H-4T11G/15L and V5
−
H
−4T15G/18.5L, it
must disconnect the terminal J1 on the drive board and the PE. For the inverter with power level
of V5-H-4T18.5G/22L or above, it must disconnect three pieces of cables entry to the surge
absorption circuit. Pack the disconnected cable heads with insulating tapes properly;
The main circuit terminal shall be connected with public conducting wires:
Fig.8
−
1 Main Circuit Insulation Test for V5
−
H
−
2T0.4G to V5
−
H
−2T12.2G and V
5
−
H
−
4T0.75G/1.5L to
V5
−
H
−
4T15G/18.5L
Fig.8
−
2 Main Circuit Insulation Test for V5
−
H
−
4T18.5G/22L to V5
−
H
−
4T500G/560L
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 200M
Ω or above.
Inverter
Megameter
Inverter
Megameter
Inverter
Megameter
Inverter
Megameter
