Buy confidently from the motor and inverter experts

When deciding on the right electric motor, it’s important to first consider your application, power requirements, operating environment, and available power supply. Regarding motors, factors such as motor size, speed, voltage, mounting arrangement, and duty cycle must be considered. If you’re replacing an existing motor, you can take the information from the motor nameplate to identify a suitable replacement.

The difference between single-phase and three-phase motors is primarily based on the demand of the machinery. Single-phase motors operate from a standard 230V and are commonly found in commercial and domestic environments. Three-phase motors operate from a 230/400V three-phase supply and are typically used in industrial environments where greater output and efficiency are required.

Yes, in most cases a three-phase motor can be operated from a single-phase supply with the use of an inverter (variable frequency drive). The inverter converts the incoming single-phase power into a three-phase output for the motor, making it a cost-effective and efficient solution when three-phase power supplies are not available. 

An inverter, or a variable frequency drive (VFD), controls the speed and performance of an electric motor by adjusting the frequency and voltage supplied to it. This allows the motor to be adjusted to run at variable speeds, helping improve energy efficiency, reduce wear and tear, and provide better control over machinery. 

To ensure you select the correct inverter, you will need to confirm the motor’s power rating, voltage, full load current, phase type, and application requirements. The inverter should ideally be matched to the motor specifications and intended operating conditions. If you’re unsure about the exact specifications of your motor, we encourage you to contact our team, which can help you determine the motor type and the most suitable inverter.

When replacing an electric motor, it’s important to determine the motor’s frame size, power rating, voltage speed (RPM), phase type, mounting configuration, and shaft dimensions. Most of this information can be identified on the motor nameplate, but if you’re unsure about any specifications you can contact our team who would be happy to help confirm the motor type and any suitable replacements.

RJW supply a wide range of electric motors and inverters that suit a variety of applications from leading brands including Brook Crompton, Control Techniques, Invertek Drives, Tec, Transwave and more. If you’re looking for a specific inverter or motor model, our team can help source the correct model for you or run through all potential options.

Yes, RJW supplies and delivers motors and inverters all over the UK. Whether it’s a replacement motor, a new inverter, or a complete motor and drive package, we can arrange a swift delivery and installation to help keep your operations running smoothly, avoid any costly downtime, and improve the longevity of the machinery. Whatever your requirement, whether it’s an urgent requirement or you simply need help finding the right product, our team are happy to help.