1. Load: The amount of power required to drive the load must be considered.
The electric motor must be powerful enough to handle the load, or the ac motors will be overloaded and could fail prematurely.
The working system is an important operation mode of electric motors products, which directly affects the operation quality of the electric motor.
Continuous working system is a more typical working system, continuous working system motor load can be basically divided into two kinds, one is the constant value load.
That is, in the electric motor's entire operation process, the load is basically not too much change.
The other case is a regular periodic change load, this situation is also more common.
For the constant value load situation, the electric motor power follows the principle that the load power does not exceed the rated power of the electric motor, but also very close to the rated power of the ac motor, to ensure the safety of the ac motor.
It is also to ensure the efficient output of the dc motor, the dc motors in the design and test links, according to the constant value load setting and verification.
If the load towed does not exceed the rated power of the suitable motor, the normal operation of such motor is not a problem.
For asynchronous motors, the starting problem during actual operation should be fully considered.
If there is repeated starting, the impact of the starting process on the overall motor temperature rise level due to higher current must be taken into account.
2. Efficiency: The electric motors must be efficient enough to minimize energy losses.
Inefficient motors will consume more energy than necessary and increase the overall cost of operation.
In the technical conditions of the energy efficiency motor products, will specify the normal operating temperature range of the industrial motor.
If it is in the special high temperature or low temperature operation, the three phase motor output power should be necessary to adjust.
That is the low temperature state motor output power can be slightly greater than the rated power (but do not increase the part more than 8%), and in the high temperature state, the motor power must be less than its rated power.
3. Speed: The ac motors must be able to operate at the desired speed.
If selecting a motor is not powerful enough, it will need to operate at a slower speed.
To ensure that the new motor is able to maintain the desired speed, it must be powerful enough to handle the load.
If the load is too much for the right motor, it will be forced to operate at a slower speed and will be less efficient.
In addition, if the load is too light, the single phase motor may not be able to reach the desired speed due to insufficient power.
It is important to select an electric motor with the right power rating to ensure that it is able to operate at the desired speed.
4. Environment: The operating environment must be considered.
Motors used in hazardous environments or in extreme temperatures may require special designs.
There is also a particularly important factor is the motor operating in a high-altitude environment, despite the lower temperature of this environment.
But due to the thin air, the motor's heat dissipation conditions will deteriorate, but in most cases, the combined effect of changes in temperature and heat dissipation medium will be basically balanced; here to remind in particular.
When the operating environment altitude of more than 1000 meters, should be special instructions when ordering, the design and manufacturing process must Take the necessary safety measures to ensure the safety of motor use.
For variable load, the motor load change characteristics and environment should be simulated for the necessary performance verification, verification of the main performance of the temperature rise level, such as air compressor operating in a high ambient temperature.
It is also a typical variable load, some motor users will also put forward specific simulation test requirements.
5. Maintenance: Regular maintenance is necessary for all types of right electric motor.
The best motor must be designed for easy access for maintenance and repair.
Ultimately, the power of an electric motor for a continuous working system should be determined based on the application and continuous duty operating conditions.
It is important to select a motor that is designed to meet the specific requirements of the application.
Dongchun motor is a professional manufacturer of electric motors in China. Please kindly check the products as follows single phase motor: YC, YCL with cast iron body and ML , MY motor with Aluminium body Three phase motor : IE1, IE2, IE3 motor for both cast iron body and Aluminium body Brake motor: DC brake motor and AC brake motor VFD motor : frequency variable drive motors. Get a Free quote from Dongchun motor
