A 3-phase inverter allows you to run a 3-phase motor on single-phase electricity. To find one suitable for your needs, understand the three types of inverters: basic and advanced 240-volt options and 240 to 415-volt models. Equipped with a solid overview, you get the necessary power to complete a project.
Basic 240-volt 3-phase Inverters
These 3-phase changes a single-phase 240-volt input to a 3-phase 240-volt output. In the United Kingdom, 3-phase electricity is 415 volts, so you can use this type of inverter only with a dual voltage motor. Check the motor's rating plate to determine its voltage requirements. The output on these single to 3-phase inverters connects directly to the motor it powers. This provides additional options, such as soft start, speed control, and electronic braking, and you can add a remote control. This device is easy to use and works with machine belts or gear-driven spindle drives for increased speed options. These phase inverters ranges from 0.25 to 5 HP.
Advanced 240-volt 3-phase Inverters
Advanced 240-volt 3-phase inverter converter offer additional features. Advanced vector inverters, they allow you to control motor speed without a loss of power. With basic models, the power of the motor decreases as you decrease its speed. This makes an advanced inverter ideal for such tools as lathes because operators can control speed without belt step changes, and machines do not lose torque at low speeds. Additional features include linking to advanced remote stations and communicating with computers for use with CNC machines. They come in power levels ranging from 0.5 to 5 HP, and you can find advanced vector inverters with a 240-volt single-phase input and a 415-volt 3-phase output.
240 to 415-volt 3-phase Inverters
A 240 to 415-volt 3-phase inverter has all the features of an advanced vector inverter, but it outputs 415-volt 3-phase power. This negates the need for a dual voltage motor, and you can use it run a 415-volt motor at full power. Basic models range from 1 to 5 HP, advanced models go up to 30 HP, and finally, some work with 440-volt bi-phase power that can handle up to 50 HP.
Choosing a 3-phase Inverter
Check the power rating and voltage requirements of the motor you want to power for guidance. Next, ensure that the 3-phase device you choose has the right features for your workshop setup. Brands to look for include Optidrive, Mitsubishi, and Miller.