Single Phase Asynchronous Motors

Combining single-phase asynchronous motors with IE2 quality, GAMAK offers a range of high-performance single-phase asynchronous motors that fulfill the requirements of different applications. This class of motors supports a wide range of applications with a compact frame, quiet operation, low maintenance requirements and different power-frame-pole combinations. GAMAK’s production standards are based on IEC norms, and the product range is tailored to meet sectoral needs. 

Technical Specifications of 1-Phase Asynchronous Motors

GAMAK’s 1-phase asynchronous motor series offers engineered solutions for applications where single-phase power infrastructure is used. The main and auxiliary windings are used to drive the magnetic field generated by the single-phase current with a rotating field effect. The capacitor connected to the auxiliary winding increases the starting torque of the motor and stabilizes the performance during the first start-up at low speed.

GAMAK’s 1-phase induction motor structure is based on the engineering integrity of the main winding, auxiliary winding, capacitor circuit and optimized rotor-stator design. This structure enables the motor to produce a stable torque at start-up and in continuous duty cycle. Details such as the strength class of the frame material, bearing life and protection level contribute to the motor’s long-term performance against harsh environmental conditions.

Power Ranges of Gamak 1-Phase Asynchronous Motors

GAMAK’s single-phase motors are available in various capacities depending on the application. GAMAK’s 1-phase asynchronous motor structure is based on the engineering integrity of the main winding, auxiliary winding, capacitor circuit and a more efficient rotor-stator design. The power ranges offered in the series are generally as follows:

• 12 kW - 3 kW
• 2-pole (≈ 3000 rpm)
• 4-pole (≈ 1500 rpm)

These power and pole combinations allow the selection of the right motor for high efficiency operation in ventilation systems, small pumps, compressors and light industrial machines. The capacitor structure, which determines the start-up characteristics, offers different solutions to the needs of the sector with run capacitor (M22D) or start + run capacitor (MS22D-MK22D) according to the torque level required by the application, as well as relay and centrifugal switch options in products with run + start capacitors.

Efficiency and Protection Classes of Gamak 1-Phase Asynchronous Motors

GAMAK aims for high performance standards in the production of 1-phase motors. These motors typically have the following characteristics:

• IE2 efficiency class,
• Power range 0.12-3 kW,
• 2 and 4 poles,
• With IP55 protection class,
• With totally enclosed fan-cooled construction (TEFC).

This increases the motors’ resistance to dust, environmental influences and long-term operation under load. The efficiency classes ensure stability in energy consumption and extend the total operating life of the motor.

Frame Sizes of Gamak 1-Phase Asynchronous Motors

The frame range varies according to the type of application and the required power capacity. GAMAK’s single-phase motors are available in the following frame ranges:

• 71 frame
• 80 frame
• 90 frame
• 100 frame.

Frame size is a decisive factor in terms of shaft diameter, foot position, connection dimensions and mounting options. GAMAK’s standardized frame structure allows for compatible mounting with existing machines, expediting the installation process.

What are the Types of 1-Phase Asynchronous Motors?

The GAMAK product range offers the IE2 type, which addresses different load and torque requirements in single-phase applications. The operating principle of a single-phase asynchronous motor is based on electromagnetic induction, which causes the magnetic field to rotate due to the phase shift between the main and auxiliary windings. The main types of 1-phase asynchronous motors are basically as follows:

• Start Capacitor Motors: Used in applications that require high torque at start-up. The start capacitor, which is activated at the moment of the motor’s first movement, provides a short-term high phase shift to the auxiliary winding and thus creates a strong starting torque. It is preferred in systems that may experience difficulty in starting such as compressors, chillers, machines that start with heavy loads.
• Start + Run Capacitor Motors (Dual Capacitor Motors): These motors have both a start capacitor and a run capacitor. The start capacitor provides high starting torque; when the motor takes over, the start capacitor is deactivated and the run capacitor remains activated, providing continuous phase shift to the auxiliary winding. Thus, the motor runs more quietly, efficiently and vibration-free. It offers high performance in pumps, ventilation systems, compact machines that require continuous operation.

Advantages of 1-Phase Asynchronous Motors

1-phase induction motors offer the advantages of high efficiency, low maintenance and small design in applications where single-phase power supplies are used. GAMAK’s engineering approach in this motor segment is developed to improve initial performance and stability in continuous operation. With a wide range of frame, power and pole options, they offer the flexibility to meet the drive solutions required in different industries. The advantages can be listed as follows:

• Full compatibility with single-phase power infrastructures
• Compact size and lightweight frame
• Cost-effective drive solutions
• Low maintenance requirement
• Modern winding structure to increase energy efficiency
• Quiet operation and low vibration
• Long-lasting bearing and durable body structure
• Wide range of power and frame options
• Product range diversified according to sectoral needs

Thanks to these advantages, GAMAK motors offer reliable performance in light industry, agricultural machinery, ventilation systems, small pumps and compact mechanical drive solutions. While it may depend on the application requirements, 1-phase asynchronous motor prices vary depending on frame size, number of poles and power ratings.