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AC electric motors of AK, AKЗ types with phase rotor are used to drive mechanisms:
-which demand rotational speed adjustment (belt conveyers, and others);
-which don’t demand rotational speed adjustment, but with heavy start conditions (fans, cement and coal mills, and others).

Description:

Rated operating mode – continuous.

АK, АKЗ motors are started manually with the help of the starting rheostat and automatically by magnetic station. At a customer’s request the starting rheostat or magnetic station can be delivered with the electric motor as a complete unit.

The motors enable two cold starts successively or one hot start.

Construction mounting arrangement of the motor – horizontal, without bed plate, with two shield bearings, one free shaft end coupled with the operating mechanism with a half-coupling.
АK, АKЗ motors are designed closed. They operate with forced ventilation by clear air in closed premises with dirty environment.

Insulation of stator winding belongs to heat-resistance class not lower “В”.

Stator winding has six outlet ends fixed on four insulators in the terminal box. Phase connection – “star”.

The terminal box is fixed on the right side if you are looking on the free shaft end (left location is specified in the order).
Motors have left and right sense of rotation. Sense of rotation is changed only in rest state.

The motor designation is decoded as follows:

АК, АКЗ – ХХ-ХХХ-Х-ХХХХ4

АК – asynchronous motor with phase rotor
АКЗ  – closed asynchronous motor with phase rotor
XX – gabarit of the electric motor
XXX – overall length of the stator core, in cm
X – number of poles
ХХХХ – climatic construction

Technical data:

Type of the motor Power, kW Voltage, V Synchronous rotational speed, rpm Eff., % cos φ МmaxМnom Connection of stator winding
АК 12-42-8УХЛ4 250 380 750 92.5 0.86 1.8 Y
АКЗ 12-49-6УХЛ4 500 380 1000 94.0 0.89 2.2 Y

 

Type of the motor Power, kW Rotational speed, rpm Eff., % cos φ Мmaxnom
АК 12-32-4УХЛ4 400 1500 93.5 0.89 2.3
АК 12-41-4УХЛ4 500 1500 93.5 0.89 2.7
АК 12-52-4УХЛ4 630 1500 94.0 0.89 2.4
АК 13-46-4УХЛ4 800 1500 94.0 0.90 2.4
АК 13-59-4УХЛ4 1000 1500 94.5 0.90 2.8
АК 12-35-6УХЛ4 250 1000 92.0 0.85 2.2
АК 12-39-6УХЛ4 320 1000 92.5 0.86 2.3
АК 12-49-6УХЛ4 400 1000 93.0 0.87 2.2
АК 13-37-6УХЛ4 500 1000 93.5 0.87 2.0
АК 13-46-6УХЛ4 630 1000 94.0 0.88 2.0
АК 13-59-6УХЛ4 800 1000 94.0 0.88 2.1
АК 12-35-8УХЛ4 200 750 91.5 0.81 2.3
АК 12-42-8УХЛ4 250 750 92.0 0.83 2.1
АК 12-52-8УХЛ4 320 750 92.5 0.83 2.1
АК 13-42-8УХЛ4 400 750 93.0 0.84 2.0
АК 13-52-8УХЛ4 500 750 93.5 0.84 1.9
АК 13-62-8УХЛ4 630 750 93.5 0.85 2.0
АК 12-42-10УХЛ4 200 600 91.0 0.79 2.4
АК 12-52-10УХЛ4 250 600 91.5 0.80 2.3
АК 13-42-10УХЛ4 320 600 92.0 0.82 1.9
АК 13-52-10УХЛ4 400 600 92.5 0.83 1.8
АК 13-62-10УХЛ4 500 600 93.0 0.84 1.9
АК 13-42-12УХЛ4 200 500 91.0 0.76 2.2
АК 13-52-12УХЛ4 250 500 91.5 0.77 2.1
АК 13-62-12УХЛ4 320 500 92.0 0.78 2.0