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H Ground Wiring
• Connect the ground terminal to the supply neutral (neutral point of the input power supply).
• Always use the ground terminal of the 200-V Inverter with a ground resistance of less than 100 Ω and
that of the 400-V Inverter with a ground resistance of less than 10 Ω.
• Do not share the ground wire with other devices such as welding machines or power tools.
• Connect the ground terminal before connecting any other terminal. When removing the wiring, re-
move the ground wire last.
• Always use a ground wire that complies with technical standards on electrical equipment and mini-
mize the length of the ground wire.
Leakage current flows through the Inverter. Therefore, if the distance between the ground electrode
and the ground terminal is too long, potential on the ground terminal of the Inverter will become unsta-
ble.
• When using more than one Inverter, be careful not to loop the ground wire.
Installation Chapter 2
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