In this class electrical heater, air cooling fan, is using a stepper motor, and the motor at the time of application, also need to often contact with electricity. So everyone in the use of such devices, it requires them to how to higher safety requirements. From this perspective, you need to choose such a motor, at the time of application will be safer: 1, the motor insulation resistance: the step motor at the time of application will be able to play very good safety performance, one of very important factors, is to see the motor insulation resistance value whether meet the requirements, and even can have very good advantage. In general, only the insulation resistance values can conform to the requirements of the motor, at the time of application will be more secure. 2, the motor insulation strength: on the surface of the stepper motor in the application of Andorra stands performance, whether it can present a good security, with the strength of the insulation of the motor itself is also related. So I need you at the time of buying the motor, choose the products that meet the requirements in terms of dielectric strength, at the time of application will be more secure. For you, it will need to select in the two aspects above are conform to the requirements of the stepper motor, at the time of application will be more secure. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: