Motor protection is a comprehensive protection for the motor. That is, when the motor has overload, phase loss, stall, short circuit, over voltage, under voltage, leakage, three-phase unbalance, overheating, bearing wear, and eccentricity o....

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The motor protector consists of a three-phase current transformer, detection, amplification, delay, adjustment circuit and execution relay. When the detection circuit detects that the current induced by the current transformer is out of phas....

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It is a well-known fact that bimetal thermal relays and motor protectors cannot be equated. According to incomplete statistics when, occur about every 100 motor burned, thermal relay can work less than 30 times. The reason is multi-faceted,....

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The motor protector shows the overload solution as follows: Motor protector parameter check: (1) Is the built-in CT of the motor protector consistent with the external CT current and rating? solution: If they are inconsistent, follow the sa....

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The role of the motor protector is to provide complete protection of the motor. A device that alarms or protects the motor when there is overload, overcurrent, phase loss, stall, short circuit, overvoltage, undervoltage, leakage, three-phas....

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1. For the single-machine independent operation motor with low requirements on working conditions, simple operation control, and no impact on production, normal type protector can be used. Because the common type protector has a simple stru....

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Mechanical life and electrical life, if operated improperly or under abnormal conditions, will accelerate the aging of electrical components and shorten the service life of the motor protector. Therefore, whether natural or human factors wi....

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Compound motor overload protector The working current of a large compressor is very large, and the arcing of the overload protector causes arcing and cannot be used. The commonly used protection method is the protection method of the thermi....

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In the late 1980s, in order to adapt to the domestic voltage, the power system was not directly grounded, and the defects of the vacuum switch of the traditional arrester were overcome. A new type of operating overvoltage protection device,....

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Working principle and classification of Breaker protector switch. The Breaker protector switch of the air conditioner compressor is generally a jump-type bimetal protector.....

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