Panasonic VF200, Instruction Manual

Page: 17 / 289

Points for Handling
10
Special Precautions
Use the inverter only within allowable ambient temperature range
(-10
～
50°C).
Since service life of the inverter is greatly affected by ambient temperature, use
it within allowable temperature range. Also, observe the installation directions
and conditions. (Refer to P.21)
The inverter will be damaged if the power voltage is applied to its
output side.
Applying power voltage to the output terminal U, V or W will damage the
inverter. Check carefully for faulty wiring and operation sequence (commercial
switching circuit, etc.). Never apply a voltage exceeding the allowable range.
Never touch inside of the inverter during operation.
Failure to do so could be extremely dangerous, since the inverter contains
high-voltage circuit. Before making an internal check, be sure to wait at least 5
minutes after turning OFF the inverter. Do not touch heat sink or braking
resistor during operation as these parts are under high temperature.
Radio interference
The main circuit of the inverter contains a high-frequency harmonic component
and may interfere with communicating equipments (such as AM radio) nearby.
The severity of interference depends on the radio field strength and is hard to
be eliminated completely. While it may be reduced by relocating radio antenna,
using noise filter, housing the inverter in a metal box, or routing cables in
conduit. (Please inquire separately.)
Do not conduct insulation test between wires of the inverter.
To measure insulation resistance between power cord and motor wires, please
remove the cables connected to the inverter and conduct test with them. Do not
conduct insulation test on the control circuits. However, insulation test can be
performed between charging unit and the ground.