wholesale high power motor, motor manufacturer should be informed: motor operating conditions (power, speed), ambient temperature, indoor or outdoor, altitude, environment (water mist, harmful gases, corrosive substances) and supporting machinery, etc.Only the motor manufacturer can customize the relevant insulation level, protection level and other special motor products according to the description.And the choice of the manufacturer of the customized motor is also very important.Then how to choose frequency converter power and motor power?
1. There is a general principle for the matching and selection of frequency converter and motor, that is, according to voltage and current.The voltage grade of the motor and the frequency converter shall be consistent, and the working current of the motor shall be less than or equal to the rated current of the frequency converter.These two conditions are met.If you choose by power it's a problem.For example, if the motor is of 30kW, the current of the 2-pole motor is far from that of the 12-pole motor. If you choose the frequency converter according to the power of 30kW, it will be broken. The current of the 12-pole motor is definitely greater than the rated current of the 30kW frequency converter, and you need to choose a frequency converter of 37W or larger.
It should be noted that submersible pump and Roots blower have constant torque rather than variable torque.Pay attention to the distinction in the selection.
