Induction motor
- Chủ nhật - 18/10/2015 17:58
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- It is possible to use the motor for continuous rated operation. - It is designed to be used in a single direction. - The number of rated revolution of the motor varies depending on the load imposed on it. - It is suitable for such operation that does not need the speed control. - Its insulation class is B. Our UL conformance motor is class A. |
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- | The characteristic of voltage can be represented by the torque's characteristic about the applied voltage. The torque of induction motor changes in proportion to two times the voltage. |
- | The characteristic of torque also change according to the capacity of the condenser. |
- | The characteristic of torque also change according to the capacity of the condenser. |
- | As the capacity of the condenser boost, the starting torque and stalling torque increase. But if the capacity is increased by 2.5~3.0 folds, the operating torque decreases and the starting torque do not increase. |
- | As a simple method to increase the torque when the induction motor is short on torque, either the voltage or the condenser capacity can be increased to continue the operation. In this case, the loss input of the motor increases and the temperature rises rapidly. |
- | However, if the motor must be run with insufficient torque, take measures to let the motor release heat as much as possible and operate the motor while keeping the temperature of the motor's housing below 90℃. Refer to (Fig. 4) |
Item | Specification |
Insulation Resistance | 100MΩ or more when 500V megger is applied between the windings and the housing after rated motor operation under normal ambient temperature and humidity |
Dielectric Strength | Sufficient to withstand 1500V at 50/60Hz applied between the windings and the case after rated motor operation under normal ambient temperature and humidity for 1 min. |
Temperature Rise | class A (65℃) or class B (85℃)or less increase measured by thermometer after rated operation |
Insulation Class | Class B(130℃), UL approval motor class A (105℃) |
Overheat Protection Device | Built-in thermal protector (automatic return type) :Open 130℃±5℃ Close 77℃±5℃ |
Ambient Temperature | -10℃~+50℃ (with UL, CE marked motors: -10℃~40℃) |
Ambient Humidity | 85% maximum (non condensing) |