Why is the motor burned more easily than in the past? Due to the continuous development of insulation technology, the motor is designed for output increasing, and reduce the volume of the heat capacity, and new motor overload capacity of smaller, more and more weak; and then because of the improvement of production automation, motor always runs in frequent starting, braking, positive inversion and variable load in many ways, put forward higher request to the motor protection device. In addition, the application of motor is wider, often working in the environment is extremely bad situations, such as high temperature, moisture, dust, corrosion etc.. All of these, causing the motor more easily damaged than in the past, especially overload, short circuit, phase missing, sweeping failure occurs at the highest frequency teco brushless dc motor.
Traditional motor protective device based on thermal relay thermal relay, but low sensitivity, large error, poor stability, protection is not reliable. Indeed, despite the many devices installed thermal relay, but motor damage and affect the normal production is still a widespread phenomenon.
The motor protector is composed of mechanical development in the past to electronic and intelligent, can directly display the motor current, voltage, temperature and other parameters, high sensitivity, high reliability, multiple functions, convenient debugging, after the protection action fault type of stick out a mile, both to reduce the damage to the motor, and greatly facilitate the fault judgment, conducive to the production of on-site troubleshooting and shorten the recovery time of production. In addition, motor eccentricity detection technique using air-gap magnetic field, so that the motor wear condition monitoring becomes possible, through curves show trends in motor eccentric degree, the early detection of bearing wear and go inside the circle, the outer circle fault, accomplish early discovery, early treatment, avoid sweeping accident tecoelectric.com
Motor protector ideal? Ideal motor protector is not the most functions, is not the most advanced, but should meet the actual needs of the scene, to achieve unity of economy and reliability, high ratio of performance to price. Reasonable selection of protection device type, function according to the actual situation, considering the protector installation, adjustment, simple and convenient to use, it is important to select high quality protection device teco dc motor speed control.