Protector

Abstract

The invention relates to a protector, which is used in a motor protection and control system to detect the real-time temperature of the motor, and quickly cut off the circuit when the detected temperature exceeds the set value, so as to realize the stall protection of the motor; the protector shell is a whole The sealed welding structure can meet the quality requirements of the vacuum impregnation process for motor enameled wire windings; the bimetal structure is used to achieve temperature protection from a low temperature of 80 degrees to a high temperature of 180 degrees; the insulator is made of high temperature resistant glass fiber material or high temperature resistant ceramic material to achieve High temperature insulation; the protector also includes a built-in auxiliary action structure to realize rapid cutoff between the moving contact and the static contact. The protector of the present invention has high-current tolerance characteristics and high-temperature insulation characteristics. It adopts a fully-sealed structure, can adapt to the working conditions of vacuum varnish immersion, and can realize rapid cut-off. It can be used in motor protection and control systems, and has excellent motor blocking. turn protection feature.

Description

technical field [0001] The invention relates to the technical field of protection control, in particular to a protector. Background technique [0002] The temperature protector is a series of automatic control elements that cause physical deformation inside the switch according to the temperature change of the working environment, resulting in some special effects and a disconnection action, so as to control the operation of the equipment to achieve the ideal temperature protection and control effect. , Its application range is very wide, and it is used in many products such as home appliances, motors, refrigeration or heating according to different types of thermostats. The bimetal sheet is also called a thermal bimetal sheet. Because the thermal expansion coefficients of each layer of metal are different, when the temperature changes, the deformation of the active layer is greater than that of the passive layer, so that the whole bimetal sheet will bend to the side of the ...

AI Technical Summary

Problems solved by technology

[0003] The normal working current of the temperature protectors on the market is mostly within 10A, which cannot withstand high power and high current, and the insulation layer cannot achieve high temperature insulation, and the cut-off speed of the temperature protector cannot meet the sensitivity requirements of high-power devices. Therefore, the current market There is a greater demand for medium and high-power temperature protectors that can be used for high-power devices such as motors

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