ABB low voltage AC asynchronous motor M3AA series

The ABB M3AA series is a series of low-voltage AC asynchronous motors produced by ABB. Efficient and energy-saving: The efficiency level of this series of motors is IE3, which meets the requirements of the International Electrotechnical Commission (IEC) 60034-2-1:2007 and the Chinese national standard GBT1032. It belongs to the category of "super efficient" motors and can effectively reduce energy consumption. Protection and Cooling: The "AA" in the model usually represents a fully enclosed, self fan cooled (TEFC) motor.

ABB low voltage AC asynchronous motor M3AA series

ABB low voltage AC asynchronous motor M3AA series

This model is the complete model of low-voltage AC asynchronous motor produced by ABB, following its specific naming rules. Each part represents the key characteristics of the motor.

1. M3AA

M: This represents a standard motor series (M series) from ABB.

3: Representing the third generation design or platform of the series. M3AA is an efficient motor in the M3 series.

AA: Represents the cooling method and housing type of the motor. AA usually refers to the cooling method of IC 411, which is fully enclosed fan cooled (TEFC). This means that the motor is sealed to prevent dust and moisture from entering, relying on its built-in fan for cooling.

2. 200

Represents the frame size of the motor, measured in millimeters (mm).

The center height refers to the vertical distance from the centerline of the motor shaft to the installation bottom surface. A center height of 200mm indicates that this is a medium power industrial motor.

3. MLA

This is the code for Frame Length, used to distinguish motors with different powers or installation sizes at the same center height.

MLA refers to a specific length of the motor base, which determines the total length of the motor, installation hole spacing, and the matching bearing size. In this example, it corresponds to a power of 30kW.

4. 4

Represents the number of poles of the motor.

The number of poles directly determines the synchronous speed of the motor under 50Hz power supply. The formula for calculating synchronous speed is: n=120 * f/p.

F is the power frequency (50 Hz)

P is a polar number (4)

Therefore, the synchronous speed is 120 * 50/4=1500 r/min.

The rated speed (nN) of the motor is 1478 r/min, which is the actual speed of the rotor, slightly lower than the synchronous speed. This difference is called the "slip rate" and is a characteristic of normal operation of asynchronous motors.

summary

M3AA

Series and cooling method

Third generation standard high-efficiency motor, fully enclosed self fan cooling (TEFC)

200

center height

200 mm

MLA

Machine base length

Specific length code, corresponding to 30kW power

4

polar number

4-pole, synchronous speed of 1500 r/min at 50Hz

Therefore, M3AA 200MLA 4 can be interpreted as: ABB's M3 series, center height of 200mm, MLA frame length, 4-pole fully enclosed self fan cooled high-efficiency AC asynchronous motor.

The M3AA series includes a wide range of models:

M3AA is a large motor series, and its models will vary according to the following parameters:

Frame Size: Represents the size and power range of the motor. Common center heights include:

For example: 71, 80, 90, 100, 112, 132, 160, 180, 200, 225, 250, 280, 315, etc.

In the model you provided, 200 is the center height.

Frame Length: Different frame lengths are used to distinguish motors of different power or installation sizes at the same center height.

For example, S, M, L, etc., sometimes with numerical suffixes (such as M1, M2).

In the model you provided, MLA is the machine base length code.

Number of Poles: determines the speed of the motor.

Common ones include 2-pole (3000 rpm), 4-pole (1500 rpm), 6-pole (1000 rpm), 8-pole (750 rpm), etc.

In the model you provided, 4 is the polar number.

Efficiency level: The M3AA series typically meets the IE3 ultra-high efficiency standard.

Therefore, other models of the M3AA series will have a combination of the above parameters, such as:

M3AA 160M 4 (center height 160mm, M-frame, 4-pole)

M3AA 225S 2 (center height 225mm, S-frame, 2-pole)

M3AA 180L 6 (center height 180mm, L base, 6-pole)

ABB low voltage AC asynchronous motor M3AA series