Multi speed motor, usually variable-pole multi-speed three-phase asynchronous electric motor. Multi speed motor can operate at different speeds depending on the pole configuration. This type of motor is typically used in multiple speed options under various load conditions, such as fans, pumps, cranes, machine tools, and compressors.
Multi speed motors are predominantly squirrel-cage induction motors, with same structural with basic asynchronous electric motors. Our company manufactures dual-speed motors as well as tri-speed motors.
Working Principle
Multi-speed motors can run at different speeds. Different speeds are achieved by changing the way the motor's windings are connected to change the number of pole pairs of the motor. For example, when switching from a double star connection to a delta connection, the motor's speed will decrease.
When do you need to use a multi-speed motor?
The following cases call for the use of a multi speed motor:
1. Occasions with significant load variations:
- Fans and pumps: When the flow or pressure demand of the system changes frequently, a multi-speed motor can adjust its speed in accordance with the actual working conditions to meet the operating requirements under different loads. For instance, in an air-conditioning system, adjusting the fan speed according to indoor temperature changes can not only ensure comfort but also reduce energy consumption.
- Cranes and lifting equipment: Different speeds are required at different stages during lifting and operation. Multi-speed motors can provide high speeds during lifting to enhance work efficiency and switch to low speeds during operation to ensure stability and safety.
2. Occasions where specific processes require speed regulation:
- Machine tools: Different processing procedures have diverse speed requirements. Multi-speed motors can offer a variety of speed options for machine tools to meet the needs of different processing operations such as milling, drilling, and grinding, thereby improving processing accuracy and efficiency.
- Textile machinery: In the textile production process, different processes demand different speeds. Multi-speed motors can adjust the speed according to the requirements of the textile process to ensure the smooth progress of production.
3. Space-limited occasions: In some cases where installation space is limited, it is impossible to install multiple motors with different speeds simultaneously. Multi speed motors can achieve multiple speeds on a single motor, saving installation space and cost.
Dual-Speed motor
|
Type |
Power (kw) |
Current |
Synchronous Speed |
Efficiency |
power factor |
|
4/2 pole 1500/3000rpm |
|||||
|
YD-90S-4/2 |
0.85/1.1 |
2.3/2.8 |
1500/3000 |
74/71 |
0.77/0.85 |
|
YD-90L-4/2 |
1.3/1.8 |
3.3/4.3 |
1500/3000 |
76/73 |
0.78/0.85 |
|
YD-100L1-4/2 |
2/2.4 |
4.8/5.6 |
1500/3000 |
78/76 |
0.81/0.86 |
|
YD-100L2-4/2 |
2.4/3 |
5.6/6.7 |
1500/3000 |
79/77 |
0.83/0.89 |
|
YD-112M-4/2 |
3.3/4 |
7.4/8.6 |
1500/3000 |
82/79 |
0.83/0.89 |
|
YD-132S-4/2 |
4.5/5.5 |
9.8/11.9 |
1500/3000 |
83/79 |
0.84/0.89 |
|
YD-132M-4/2 |
6.5/8 |
13.8/17.1 |
1500/3000 |
84/80 |
0.85/0.89 |
|
YD-160M-4/2 |
9/11 |
18.5/22.9 |
1500/3000 |
87/82 |
0.85/0.89 |
|
YD-160L-4/2 |
11/14 |
22.3/28.8 |
1500/3000 |
87/82 |
0.86/0.90 |
|
YD-180M-4/2 |
15/18.5 |
29.4/36.7 |
1500/3000 |
89/85 |
0.87/0.90 |
|
YD-180L-4/2 |
18.5/22 |
35.9/42.7 |
1500/3000 |
89/86 |
0.88/0.91 |
|
YD-200L-4/2 |
26/30 |
49.9/58.3 |
1500/3000 |
89/85 |
0.89/0.92 |
|
YD-225S-4/2 |
32/37 |
60.7/71.0 |
1500/3000 |
90/86 |
0.89/0.92 |
|
YD-225M-4/2 |
37/45 |
69.4/86.4 |
1500/3000 |
91/86 |
0.89/0.92 |
|
YD-250M-4/2 |
45/52 |
84.4/98.7 |
1500/3000 |
91/87 |
0.89/0.92 |
|
YD-280S-4/2 |
60/72 |
108.9/135.1 |
1500/3000 |
91/88 |
0.90/0.92 |
|
YD-280M-4/2 |
72/82 |
133.6/152.2 |
1500/3000 |
91/88 |
0.90/0.93 |
|
6/4 pole 1000/1500rpm |
|||||
|
YD-90S-6/4 |
0.65/0.85 |
2.2/2.3 |
1000/1500 |
64/70 |
0.68/0.79 |
|
YD-90L-6/4 |
0.85/1.1 |
2.8/3.0 |
1000/1500 |
66/71 |
0.70/0.79 |
|
YD-100L1-6/4 |
1.3/1.8 |
3.8/4.4 |
1000/1500 |
74/77 |
0.70/0.80 |
|
YD-100L2-6/4 |
1.5/2.2 |
4.3/5.4 |
1000/1500 |
75/77 |
0.70/0.80 |
|
YD-112M-6/4 |
2.2/2.8 |
5.7/6.7 |
1000/1500 |
78/77 |
0.75/0.82 |
|
YD-132S-6/4 |
3/4 |
7.7/9.5 |
1000/1500 |
79/78 |
0.75/0.82 |
|
YD-132M-6/4 |
4/5.5 |
9.8/12.3 |
1000/1500 |
82/80 |
0.76/0.85 |
|
YD-160M-6/4 |
6.5/8 |
15.1/17.4 |
1000/1500 |
84/82 |
0.78/0.84 |
|
YD-160L-6/4 |
9/11 |
20.6/23.4 |
1000/1500 |
85/83 |
0.78/0.85 |
|
YD-180M-6/4 |
11/14 |
25.9/29.8 |
1000/1500 |
85/84 |
0.76/0.85 |
|
YD-180L-6/4 |
13/16 |
29.4/33.6 |
1000/1500 |
86/85 |
0.78/0.85 |
|
YD-200L-6/4 |
18.5/22 |
41.4/44.9 |
1000/1500 |
87/86.5 |
0.78/0.86 |
|
YD-225S-6/4 |
22/28 |
44.2/56.5 |
1000/1500 |
88/86.5 |
0.86/0.87 |
|
YD-225M-6/4 |
26/32 |
52.2/63.2 |
1000/1500 |
88/85.5 |
0.86/0.90 |
|
YD-250M-6/4 |
32/42 |
62.1/81.1 |
1000/1500 |
90/86.5 |
0.87/0.91 |
|
YD-280S-6/4 |
42/55 |
81.5/106.7 |
1000/1500 |
90/87 |
0.87/0.90 |
|
YD-280M-6/4 |
55/67 |
106.7/131.5 |
1000/1500 |
90/87 |
0.87/0.89 |
|
8/4 pole 750/1500rpm |
|||||
|
YD-90L-8/4 |
0.45/0.75 |
1.9/1.8 |
750/1500 |
58/72 |
0.63/0.87 |
|
YD-100L-8/4 |
0.85/1.5 |
3.1/3.5 |
750/1500 |
67/74 |
0.63/0.88 |
|
YD-112M-8/4 |
1.5/2.4 |
5.0/5.3 |
750/1500 |
72/78 |
0.63/0.88 |
|
YD-132S-8/4 |
2.2/3.3 |
70./7.1 |
750/1500 |
75/80 |
0.64/0.88 |
|
YD-132M-8/4 |
3/4.5 |
9.0/9.4 |
750/1500 |
78/82 |
0.65/0.89 |
|
YD-160M-8/4 |
5/7.5 |
13.9/15.2 |
750/1500 |
83/84 |
0.66/0.89 |
|
YD-160L-8/4 |
7/11 |
19/21.8 |
750/1500 |
85/86 |
0.66/0.89 |
|
YD-180L-8/4 |
11/17 |
26.7/32.8 |
750/1500 |
87/88 |
0.72/0.91 |
|
YD-200L1-8/4 |
14/22 |
33.0/41.3 |
750/1500 |
87/88 |
0.74/0.92 |
|
YD-200L2-8/4 |
17/26 |
40.1/48.8 |
750/1500 |
87/88 |
0.74/0.92 |
|
YD-225M-8/4 |
24/34 |
53.2/66.7 |
750/1500 |
89/88 |
0.77/0.88 |
|
YD-250M-8/4 |
30/42 |
64.9/78.8 |
750/1500 |
90/89 |
0.78/0.91 |
|
YD-280S-8/4 |
40/55 |
83.5/102 |
750/1500 |
91/90 |
0.80/0.91 |
|
YD-280M-8/4 |
47/67 |
96.9/122.9 |
750/1500 |
91/90 |
0.81/0.92 |
|
8/6 pole 750/1000rpm |
|||||
|
YD-90S-8/6 |
0.35/0.45 |
1.6/1.4 |
750/1000 |
56/70 |
0.60/0.72 |
|
YD-90L-8/6 |
0.45/0.65 |
1.9/1.9 |
750/1000 |
59/71 |
0.60/0.73 |
|
YD-100L-8/6 |
0.75/1.1 |
2.9/3.1 |
750/1000 |
65/75 |
0.60/0.73 |
|
YD-112M-8/6 |
1.3/1.8 |
4.5/4.8 |
750/1000 |
72/78 |
0.61/0.73 |
|
YD-132S-8/6 |
1.8/2.4 |
5.8/6.2 |
750/1000 |
76/80 |
0.62/0.73 |
|
YD-132M-8/6 |
2.6/3.7 |
8.2/9.4 |
750/1000 |
78/82 |
0.62/0.73 |
|
YD-160M-8/6 |
4.5/6 |
13.3/14.7 |
750/1000 |
83/85 |
0.62/0.73 |
|
YD-160L-8/6 |
6/8 |
17.5/19.4 |
750/1000 |
84/86 |
0.62/0.73 |
|
12/6 pole 500/1000rpm |
|||||
|
YD-160M-12/6 |
2.6/5 |
11.6/11.9 |
500/1000 |
74/84 |
0.46/0.76 |
|
YD-160L-12/6 |
3.7/7 |
16.1/15.8 |
500/1000 |
76/85 |
0.46/0.79 |
|
YD-180L-12/6 |
5.5/10 |
16.5/20.5 |
500/1000 |
79/86 |
0.54/0.86 |
|
YD-200L1-12/6 |
7.5/13 |
24.5/26.4 |
500/1000 |
83/87 |
0.56/0.86 |
|
YD-200L2-12/6 |
9/15 |
28.9/30.1 |
500/1000 |
83/87 |
0.57/0.87 |
|
YD-225M-12/6 |
12/20 |
35.2/39.7 |
500/1000 |
85/88 |
0.61/0.87 |
|
YD-250M-12/6 |
15/24 |
42.1/47.1 |
500/1000 |
86/89 |
0.63/0.87 |
|
YD-280S-12/6 |
20/30 |
54.8/58.9 |
500/1000 |
88/89 |
0.63/0.87 |
|
YD-280M-12/6 |
24/37 |
63.8/72.6 |
500/1000 |
88/89 |
0.65/0.87 |
Tri-Speed motor
|
Type |
Power (kw) |
Current |
Synchronous Speed |
Efficiency |
power factor |
|
6/4/2pole 1000/1500/3000rpm |
|||||
|
YD-100L-6/4/2 |
0.75/1.3/1.8 |
2.6/3.7/4.5 |
1000/1500/3000 |
67/72/71 |
0.65/0.75/0.85 |
|
YD-112M-6/4/2 |
1.1/2/2.4 |
3.5/5.1/5.8 |
1000/1500/3000 |
73/74/74 |
0.65/0.81/0.85 |
|
YD-132S-6/4/2 |
1.8/2.6/3 |
5.1/6.1/7.4 |
1000/1500/3000 |
75/78/71 |
0.71/0.83/0.87 |
|
YD-132M1-6/4/2 |
2.2/3.3/4 |
6.0/7.5/8.8 |
1000/1500/3000 |
77/80/76 |
0.72/0.84/0.91 |
|
YD-132M2-6/4/2 |
2.6/4/5 |
6.9/9/10.8 |
1000/1500/3000 |
80/80/77 |
0.72/0.84/0.91 |
|
YD-160M-6/4/2 |
3.7/5/6 |
9.5/11.2/13.2 |
1000/1500/3000 |
82/81/76 |
0.72/0.84/0.91 |
|
YD-160L-6/4/2 |
4.5/7/9 |
11.4/15.1/18.8 |
1000/1500/3000 |
83/83/79 |
0.72/0.85/0.92 |
|
8/4/2pole 750/1500/3000rpm |
|||||
|
YD-112M-8/4/2 |
0.65/2/2.4 |
2.7/5.1/5.8 |
750/1500/3000 |
59/74/74 |
0.63/0.81/0.85 |
|
YD-132S-8/4/2 |
1/2.6/3 |
3.6/6.1/7.1 |
750/1500/3000 |
69/78/74 |
0.61/0.83/0.87 |
|
YD-132M-8/4/2 |
1.3/3.7/4.5 |
4.6/8.4/10.0 |
750/1500/3000 |
71/80/75 |
0.61/0.84/0.91 |
|
YD-160M-8/4/2 |
2.2/5/6 |
7.6/11.2/13.2 |
750/1500/3000 |
75/81/76 |
0.59/0.84/0.91 |
|
YD-160L-8/4/2 |
2.8/7/9 |
9.2/15.1/18.8 |
750/1500/3000 |
77/83/79 |
0.6/0.85/0.92 |
|
8/6/4pole 750/1000/1500rpm |
|||||
|
YD-112M-8/6/4 |
0.85/1/1.5 |
3.7/3.1/3.5 |
750/1000/1500 |
62/68/75 |
0.56/0.73/0.86 |
|
YD-132S-8/6/4 |
1.1/1.5/1.8 |
4.1/4.2/4.0 |
750/1000/1500 |
68/74/78 |
0.60/0.73/0.87 |
|
YD-132M1-8/6/4 |
1.5/2/2.2 |
5.2/5.4/4.9 |
750/1000/1500 |
71/77/79 |
0.62/0.73/0.87 |
|
YD-132M2-8/6/4 |
1.8/2.6/3 |
6.1/6.8/6.5 |
750/1000/1500 |
72/78/80 |
0.62/0.73/0.87 |
|
YD-160M-8/6/4 |
3.3/4/5.5 |
10.2/9.9/11.6 |
750/1000/1500 |
79/81/83 |
0.62/0.76/0.87 |
|
YD-160L-8/6/4 |
4.5/6/7.5 |
13.8/14.5/15.6 |
750/1000/1500 |
80/83/84 |
0.62/0.76/0.87 |
We can produce the above model of multi speed motor, and can be customized according to customer needs, welcome to contact our sales team for consultation.
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