Welcome to the official website of Zhengzhou leno Electric Co., Ltd.Chinese |   English |   privacy

News Center

Company Industry

Selection of thermal relay

Classification:Company   2018-05-02 21:38:59

(1) type selection   

Generally, two phase structure of thermal relay can be selected, but when the balance of the three-phase voltage is poor, the working environment is bad or the unattended motor, it is suitable for the thermal relay of three phase structure. For a triangular connection motor, a thermal relay with a phase protection device shall be selected.   

(2) selection of rated current for thermal relay  

The rated current of the thermal relay should be greater than the rated current of the motor. Then select the type of the thermal relay according to the rated current.   

(3) the selection and setting of the rated current of the thermal element   

The rated current of the heat element should be slightly larger than the rated current of the motor. When the starting current of the motor is 6 times the rated current and the start time is not more than 5S, the thermal integral current of the motor is adjusted to the rated current of the motor. When the starting time of the motor is longer, the impact load is dragged or no parking is allowed, the setting current of the thermal element is adjusted to 1.1-1.15 times of the rated current of the motor.

About us
Products and Solutions
News Center
Contact us
Contact

0371-67838896

Leno service hotline

Zhengzhou leno Electric Co., Ltd. all rights copyright Copyright© 2007-2015 豫ICP备13022503号-1

pk拾登陆官网