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Should be clear problems with the motor moisture-proof heating band

Anti-condensation heating device

There are two types of moisture-proof heating devices, one is an anti-condensation heater and the other is a moisture-proof heating tape. The former is installed in the proper position in the cavity of the motor, and the latter is tied at the end of the winding. The functions are to prevent the accumulation of the hot air temperature inside the motor and the suction of moisture due to negative pressure.

The heating device is an additional component that must be equipped with the wet-tropic motor and high-voltage motor. In the actual use and installation process, if the heating device itself fails or the power supply link is out of control, it may be a serious motor failure.

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About heating tape

Heating tapes are suitable for the heating or insulation of tanks, pipes, tanks and other containers of various industrial equipment. It is mainly composed of electric heating material and insulating material. The electric heating material is nickel-chromium alloy belt, which has the characteristics of fast heating, high thermal efficiency and long service life; the insulating material is multi-layer alkali-free glass fiber, with good temperature resistance and reliability. The insulation properties.

The heating belt structure is soft, and can be directly wound on the surface of the heated part during use, and has the advantages of uniform temperature, simple installation, convenient use, and safety and reliability.

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Motor moisture heating belt

A single motor moisture-proof heating band is installed at the winding end of the motor drive end. If the single heating power is insufficient to maintain the internal temperature of the motor, double or multiple motor moisture-proof heating tapes should be used. In this case, balance should be arranged at the driving end and the non-driving end.

Wound stator heating bands are not allowed to overlap to prevent local overheat damage to the insulation. The heating tape is fixed with a polyester tape and its leads are usually fixed in the terminal box.

In order to make the motor work in discontinuous, the insulating winding resistance of the winding coil of the motor will not be reduced due to moisture absorption, and the temperature of the winding should be higher than the ambient temperature by 5° C. to prevent condensation of the motor coil, thereby preventing winding coils. Wet, ensure that the motor starts normally.

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Motor moisture-proof heating belt selection

● The heater power selection principle is: When the motor is deactivated, the winding temperature of a closed motor is higher than the ambient temperature by 5K. Without taking into account external influences, the heat released is completely absorbed.

Selection of heating belt length: According to the heating belt can not overlap, the heating belt length is greater than or equal to 90% of the circumference, and at least less than the circumference of 30mm as the standard selection.

Selection of heating belt length: According to the heating belt can not overlap, the heating belt length is greater than or equal to 90% of the circumference, and at least less than the circumference of 30mm as the standard selection.

In order to ensure the heat transfer and fixing effect of the heating belt, it is used together with the motor to dip the paint; also some enterprises fix the stator after the kiln, in order to prevent the corrosion of the heating belt caused by the dipping process. The use of a heating belt is the same as that of a heater. When the motor is working, the heating belt does not work; when the motor is not working, the heating belt works.