TEC Single Phase Electric Motor

TEC single phase electric motors are cost-effective, reliable, and small electric motors suitable for a range of applications. These 1 phase motors reflect TEC’s commitment to ‘Total Engineering Commitment’ and represent an extremely competitive price. If you’re looking for a single phase AC motor, TEC may well represent your best choice. RJW offer a range of TEC single phase motors from 0.12kW to 3kW, available at 2 pole (3000rpm) or 4 pole (1500 rpm) and with various mountings are available, including C Face (B14), D Flange (B5), Foot (B3), Foot & C Face (B34) or Foot & D Flange (B35).

Frequently Asked Questions

What is a single phase motor?

A single phase electric motor is a motor designed to operate from a standard single-phase alternating current (AC) power supply. This type of power is most commonly found in homes, workshops, and small commercial premises.

Single phase electricity does not naturally produce a rotating magnetic field, so these motors use components such as capacitors and auxiliary windings to help start and run the motor smoothly, providing power to appliances and lighter equipment.

What are single phase motors used for?

Single phase motors are used in agricultural, industrial and household appliances when single phase electricity is the only available power source, and powers products such as:

• Air compressors
• Pumps and pressure washers
• Conveyor systems
• Workshop machinery
• Other small machinery
• Fans and ventilation systems
• Refrigeration machinery

What is the difference between a Cap Run and Cap Start–Cap Run motor?

The difference between a Cap Run and a Cap Start-Cap Run motor is the way that the motor uses its capacitors whilst in operation.

A Capacitor Run Motor uses a single capacitor that is permanently connected during operation and is better suited for applications with an overall lighter load or demand.

Capacitor Start–Capacitor Run Motor, instead uses two capacitors, one for starting and one for running, which creates a higher starting torque and larger capacity to start under a higher load.

What is the difference between 2 pole and 4 pole single phase motors?

The number of the poles determines the speed of the motor, for example:

• 2 Pole = ~3000RPM
• 4 Pole = ~1500RPM

2 pole is great option for high speed applications, whereas 4 pole offers higher torque and better suits low speed applications. In essence, 2 pole motors run better at faster speeds, and 4 pole motors run more effectively at lower speeds and heavy loads when maximum torque is needed.

What mounting options are available for single phase motors?

Single phase electric motors are available in a variety of IEC (International Electrotechnical Commission) mounting configurations, including:

• Foot Mounts: motor is mounted with feet on the base plate
• Flange Mounts: motor is mounted to equipment via a large flange (protruding ridge/lip)
• Face Mounts: motor is mounted to smaller flange (typically used on smaller machinery)

What size single phase motor do I need?

When deciding on the correct-sized motor, it’s important to consider the following:

• Required output (kW or HP)
• Load type (light, medium or heavy start)
• Required speed
• Existing motor frame size
• Available voltage supply

If you are replacing a motor, it’s recommended to consider the above factors (exc. Load type), as well as shaft diameter and mounting type.

If you need help choosing a motor, contact our team.

Can I replace a three phase motor with a single phase motor?

Yes, however, there are some limitations. A single phase induction motor can replace a three phase motor if the only power source a single phase, but it is also worth considering that:

• Single phase motors overall have lower efficiency and torque
• Some machines may require a three phase power supply or inverter
• They are typically available in smaller power ratings

In most cases, the better option would be to use a variable frequency drive (VFD) or inverter to run a three phase motor from a single phase supply.

What IP rating do these single phase motors have?

Many single phase motors typically have an IP55 rating, meaning the motor is dust protected and protected against water jets from any direction, making them suitable for industrial, agricultural and workshop equipment where protection from dust and moisture is necessary.

Are TEC single phase motors energy efficient?

Yes, TEC motors are designed to be highly efficient and are typically available with IE2 efficiency class ratings, which reduces energy consumption and waste, lowers overall operating costs, and runs cooler for longer periods of time.

Do your single phase motors come with a warranty?

Yes, absolutely. Each product has its own unique terms of warranty due to the demands of the motor, which can be queried with one of our team members.