G7

In consideration of the different usage environments throughout the world, this inverter boasts high levels of both performance and operability, and stands ready to meet the most stringent technological demands. For the first time, 3-level control has been incorporated in 400-V class, general-purpose inverters to solve the problem of micro-surge voltages. It can be used in existing motors.

Features of the 3-level control method

The first 400V class general-purpose inverter in the world to use the 3-level control method, to approach sine wave output voltage. It provides the solution to problems like motor insulation damage to surge voltage, and electrolytic corrosion of motor bearings due to shaft voltage. Existing general-purpose motors can be used even without surge suppression filters. The noise and leakage current are greatly reduced (halved in in-house comparison).

• Low surge voltage

Suppresses surge voltage to the motor, eliminating the need for surge voltage protection for the motor.

• Low electrical noise

Significantly reduces conduction (power supply) noise and radiated noise caused by inverter drives, minimizing effects on peripheral devices.

• Low acoustic noise

Provides low acoustic noise, difficult to achieve with conventional designs.