Motor rating
The motor rating is the total value of the amount of electricity and mechanical output specified by the motor manufacturer and its duration and sequence. Includes the following typical cases:
(1) The amount of continuous work.
(2) Short-term work quota.
(3) The amount of work for the cycle.
(4) Non-discrete constant load work quota.
Affecting motor rating factors
(1) The heat and heat dissipation conditions of the motor.
(2) Motor structure form.
(3) Use environment.
(4) Cooling method.
(5) Work system.
(6) Insulation class.
Quota issues for specific applications
The most commonly used motor rating is continuous rating, which defines the output power that can be continuously sustained without breaking the specified limits (the DC generator is expressed in kW, the alternator is expressed in kVA with a specific power factor, and the motor is expressed in horsepower or kW). ). For loads with intermittent load, cyclic load or load rate variation, a short-time rating of the motor can be given to define the load that can be assumed within the specified time. The standard time limit for short-term quotas is 5, 15, 30 and 60 minutes.
The motor rating also specifies speed, voltage and frequency, as well as allowable voltage and frequency changes. However, in many motor applications, the load will cycle more or less over a wide range. A typical crane or elevator working cycle is a good example. From a thermal point of view, it is necessary to determine the average calorific value of the motor by studying the loss of the motor at each stage of the working cycle in detail.
The company focuses on the production of planetary gear motor and medical instrument motor.
