How to protect motor ?
1. Protection level of the motor
For example, the motor of ip23 prevents the intrusion of solid objects greater than 12mm and prevents human fingers from touching the internal parts of medium-sized external objects (diameter greater than 12mm). Can prevent sprayed water intrusion, or prevent damage caused in a direction of a vertical angle of less than 60 degrees.
The ip (international protection) protection rating system is drafted by iec (international electrotechnical commission). Grade the motor according to its dust and moisture proof characteristics. The external objects referred to here contain tools, and the human fingers are not allowed to contact the charged part of the motor, so as to avoid electric shock.
The ip protection level is composed of two numbers. The first number indicates the level of the motor from dust and preventing external intrusion, and the second number indicates the sealing degree of the motor against moisture and waterproof invasion. The larger the Lou character, the higher the protection level.
2. Do the motor frequency conversion frequency control experiment, can the ordinary motor achieve the frequency conversion speed regulation? Or must you buy a frequency conversion motor?
To do motor frequency control experiment with ordinary AC motor on the line.
DC motor can also realize frequency conversion, such as the DC frequency conversion air conditioning: the power frequency ac into DC power, and to the power module, the module by microcomputer control signal control, and ac frequency conversion is different module output controlled DC power supply to the compressor DC motor, control the displacement of the compressor engine, so as to achieve "variable frequency speed regulation".
3. What kind of motor is an AC frequency conversion motor?
Simply put, the frequency conversion technology is used in the control of AC motors. AC frequency conversion motor is actually a kind of motor by adjusting the AC frequency to adjust the speed, adjust the AC frequency by the frequency converter, the motor itself will not be frequency conversion, in many occasions is to take the ordinary motor and frequency converter speed regulation when the AC frequency conversion motor use.
