Motor protector

Abstract

The invention discloses a motor protector. The motor protector comprises a single chip microcomputer control unit and a display screen which is electrically connected with the single chip microcomputer control unit, wherein the single chip microcomputer control unit is connected with a current transformer, a voltage transformer, a Hall sensor, a temperature sensor, a voice alarm module, a wireless transmission module, a lightning protection module, an air switch, an electric leakage protector, an automatic transformer, a magnetic field detection coil and a thermal relay at the same time. The motor protector is reasonable in design, capable of effectively protecting a three-phase motor by detecting the voltage, current, temperature and bearing position information, and high in precision, reliable in operation, and high in stability; various lines of motor operating parameters can be displayed on the display screen, so that an operator can analyze reasons; in addition, the motor operating parameters can be fed back in a remote manner through the wireless transmission module, so that the motor protector can be controlled more conveniently; and moreover, the operating voltages at the two ends of the motor can be automatically regulated through the automatic transformer to prevent undervoltage and overvoltage, thereby prolonging the service life of the motor.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a motor protector. Background technique [0002] Energy conservation refers to strengthening energy management, taking measures that are technically feasible, economically reasonable, and environmentally and socially acceptable, reducing losses and waste in all links from energy production to consumption, and using energy more effectively and rationally”; “Energy saving A long-term strategic policy for economic development". Energy saving is a systematic project. According to incomplete statistics, the number of 1KW-320KW low-voltage motors in operation in the country is 60 million, accounting for more than 70% of the power consumption of the power grid. It is an industrial, agricultural and commercial system. The most widely used power equipment in China. The number of electric motors burned is about 3 million each year in the country, with a capacity of 1 billion ...

AI Technical Summary

Problems solved by technology

About 3 million electric motors are burned every year in the country, with a capacity of 1 billion kilowatts. The electric motor consumes hundreds of millions of kilowatt-hours of electricity every year during the burning process, and the repair cost is as high as 10 billion yuan, resulting in losses of 10 billion yuan due to shutdown.

Only the above expenses are not included, and it will also cause the power of the motor to drop after repair, the power consumption will be large, and the performance will be deteriorated, which will directly affect the normal production of the enterprise.

[0003] Nowadays, there is no unified standard for motor protection products on the market, and there are various models and specifications

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