Special Precautions - Panasonic VF0 Series 400V class Instruction Manual

♦ ♦ ♦ ♦ Use your inverter only within tolerable ambient temperature range.
(–10°C to 50°C)
Because the life of the inverter is greatly affected by ambient temperature, do
not use it outside the specifications. Also, pay attention to the installation
direction's and conditions. (See page 12.)
♦ ♦ ♦ ♦ The inverter will be damaged if the power voltage is applied to its
output terminal.
Applying power voltage to the output terminal U, V or W will damage the
inverter. Check for miswiring and operation sequence (commercial
changeover circuit, etc.). Never apply a voltage that exceeds the tolerable
voltage of the inverter.
♦ ♦ ♦ ♦ Never touch the inside of the inverter during operation.
This is extremely dangerous the inverter contains high-voltage circuit.
Be sure to wait at least 5 minutes after the inverter power has been turned
OFF, before making an internal check.
Do not touch the heat sink fins or brake resistor during operation as these
parts will become hot during operation.
♦ ♦ ♦ ♦ Radio interference
The main circuit of the inverter contains a higher harmonic component and
may interfere with communications equipment such as AM radios if these are
used nearby. The amount of radio interference depends on the field strength
in the area where the inverter is used. While it is difficult to completely
eliminate radio interference, it may be reduced by changing the angle of your
radio antenna, using a noise filter with the inverter, housing the inverter in a
metallic shield box, or routing inverter cables in metal conduit. (Please inquire
separately.)
♦ ♦ ♦ ♦ Do not attempt insulation testing between the inverter cables.
To measure the insulation resistance of the power supply cables or the motor
cables, disconnect them from the inverter. Never conduct insulation testing
on the control circuits. However, insulation testing can be performed between
the charging unit and the ground.
♦ ♦ ♦ ♦ Do not connect a power factor capacitor or suppressor to the output
terminal of the inverter.
Such devices can damage the inverter, its capacitors and other parts.
Remove the device if one is connected.

Special Precautions

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