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Chapter 1 Safety Instructions Chapter 1 Safety Instructions
CAUTION
Motor insulation should be checked before the inverter is used
for the first use or reused after a long-term idle. Be sure the
insulation resistance measured is no lower than 5MÙ.
If the inverter is used beyond the range of allowable working
voltage, then an extra step-up or step-down voltage transformer
shall be configured.
Due to thin air in a place where the altitude is higher than
1,000m, the heat dissipation of inverter will be less effective.
Hence derating should be done before use. In general, when the
height rises by 1,000m, the rated voltage of the inverter shall
reduce by 10%. Refer to the Figure 1-4 for details of the derating
curve.
M
Figure 1-4 Diagram of Inverter Derating Curve
FORBIDDEN
DO NOT touch the radiator or charging resistor of the inverter
with hand(s). Otherwise, there is the possibility of getting scalded.
DO NOT proceed direct start-stop operation frequently with a
contactor or any other switch devices in the inverter input side. As
large charging current exists in the main circuit of the inverter,
frequent power-on/off may produce cumulative effect resulting in
heat fatigue of inverter components and great reduction of service
life of the inverter. See the detail in the Figure 1-5.
Three-phase AC Power Supply
Inverter
Forbidden
On
Off
COMPULSORY
In case abnormalities occur, such as smoke, off odor, strange
sound, DO cut off the power supply immediately, overhaul the
equipment or turn to the agent for help via phone call.
1.6 Cautions for Disposing
WARNING
CAUTION
Exposure may happen when the electrolytic capacitor (ELCC)
of the inverter burns. Be careful to cope with it.
The plastic parts on the operator panel will give off toxic gas
when getting burned. Be careful to cope with it.
Dispose damaged inverter as industrial waste.