To implement the function of stepwise rotation frequency control in industrial equipment and mechanisms, most enterprises spend a lot of money on the purchase of integrated solutions in the form of electric drives with frequency converters. In this regard, the Turkish manufacturer of electrical products GAMAK, offers a profitable alternative in the form of two-speed asynchronous electric motors such as: VGM, VAGM, VCAGM and VGMM at lower prices. Structurally, two-speed asynchronous electric motors produced by a Turkish company GAMAK They have two systems of stator windings, one of which is laid in a stator with two pairs of poles, and the second system of windings fits into the same slots of the stator but with four pairs of poles. Further, electric motors of this arrangement work according to the following principle: when voltage is applied to the first winding system, the rotor rotates at a speed from 1300 to 1500 rpm, therefore, when voltage is applied to the second winding system, the rotor speed can range from 600 to 750 rpm. Given the above functionality and low cost, two-speed asynchronous electric motors are massively used on gear motors, in industrial machines and equipment.
Technical parameters of three-phase asynchronous two-speed electric motors GAMAK series VGM, VAGM, VCAGM, VGMM:
- Overall height: from 56 to 315 mm;
- Rated voltage: up to 400 V;
- Number of poles: from 2 to 12;
- Rated power: from 0.06 to 185 kW;
- Rated speed: from 430 to 3000 rpm;
- Frequency: up to 60 Hz;
- Rated torque: from 0.24 to 1154 Nm;
- Degree of protection: IP55;
- Insulation class: F.
