What is the role of the protector of the electric hoist motor?

Because of the continuous development of insulation technology, in the design of the motor requires both increased output, but also requires a reduction in size, so that the new electric hoist motor thermal capacity is getting smaller and smaller, the load capacity is getting weaker and weaker; and then due to the increase in the degree of automation of the production, the motor is often required to run in the frequent starting, braking, forward and reverse, as well as a variety of ways to change the load, the motor protection device puts forward a higher demand.

At present, the electric hoist motor protector has been developed from the past mechanical electronic and intelligent type, can directly display the motor current, voltage, temperature and other parameters, sensitivity, high reliability, multi-functional, debugging is also convenient, after the protection of the action of the type of failure at a glance, not only reduces the damage to the motor, but also greatly facilitates the judgment of the fault, and is conducive to the production of the site of the troubleshooting and shortening of the recovery of the The new system is designed to be a very easy to use and easy to install.

The ideal electric hoist motor protector is not the most functional, not the so-called advanced, but should meet the actual needs of the site, to achieve the unity of economy and reliability, with a high performance-price ratio. According to the actual situation of the site to reasonably select the type of protector, function, while considering the protector installation, adjustment, use of simple and convenient, and more importantly, to choose a high-quality protector.

Traditional electric hoist motor protection device is based on thermal relay, but thermal relay low sensitivity, error, poor stability, unreliable protection. The fact is also true that, although many devices installed thermal relay, but the motor damage and affect the normal production of the phenomenon is still prevalent.