In the field of modern industrial automation, induction motors (asynchronous motors) are hailed as the "power source" of industrial production due to their simple structure, reliable operation, and low cost. From household fans to factory conveyor belts, various types of induction motors are indispensable.
 
For students in vocational schools and higher education institutions, combining the abstract theory of rotating magnetic fields from textbooks with the actual starting, speed regulation, and forward/reverse control of motors is a major challenge in the learning process. The MR242E induction motor experimental equipment is a one-stop training platform designed to address this teaching challenge.

I.What is the MR242E?
The MR242E is a comprehensive experimental teaching device for electric motors, integrating various types of induction motors. Through its modular design and rich experimental content, it helps students gain a deep understanding of the structural characteristics, control principles, and operating features of various motors. Whether you are a beginner or an advanced learner, you can gain valuable practical experience through this device..
 
II.Key Features: Safe, Flexible, Durable
1.Flexible Mobility and Robust Structure: The experimental platform features an aluminum column frame with casters at the bottom, allowing for easy movement to fit the classroom layout. The tabletop is made of fire-resistant board, making it sturdy, durable, and aesthetically pleasing, capable of withstanding frequent and prolonged experimental operations.
2. Integrated Measurement and Control: The equipment integrates a power supply box and instrument box, combining the power supply and parameter measurement required for experiments. The panel is equipped with a voltmeter, ammeter, wattmeter, and power factor meter, allowing students to monitor the motor's operating status in real time, with intuitive and convenient data reading.
3. High Safety Guarantee: Safety is paramount for teaching equipment. The MR242E is equipped with a leakage current protector, emergency stop button, and safety output socket, ensuring absolute safety for students during wiring and operation.
 
III.Technical Specifications at a Glance
Input Power: Three-phase five-wire system, 380V±10%, 50Hz
Dimensions: 1200mm × 800mm × 1500mm
Total Capacity: < 1.5 KVA
Equipment Weight: < 100kg
Operating Environment: Temperature -10℃～+40℃, Humidity <85% (25℃)
 
IV.Comprehensive Experimental Content
The highlight of the MR242E is its comprehensive experimental system covering everything from single-phase motors to special-purpose motors, comprising six major experimental modules:
1. Single-Phase Capacitor-Run Motor Experiment
This is the most common type of motor in household appliances. Students will learn its working principle, conduct static tests, and master start/stop control and the role of centrifugal switches. This helps students understand why single-phase motors require capacitors for starting.
2. Three-Phase Asynchronous Motor Experiment
As a core component in industrial applications, the three-phase asynchronous motor is a key focus of study. Experiments include:
Motor forward and reverse rotation control
Star (Y) and delta (△) connection switching
Contactor-based inching and continuous operation control
These experiments form the foundation for learning relay contactor control systems.
3. Three-Phase Wound-Rotor Asynchronous Motor Experiment
Unlike ordinary squirrel-cage motors, wound-rotor motors improve starting performance and speed regulation characteristics by incorporating resistance in the rotor circuit through slip rings and brushes. Students will master its wiring methods and parameter settings through experiments.
4. Three-Phase Wound-Rotor Synchronous Motor Experiment
Although synchronous motors have a complex structure, they are indispensable in high-power applications requiring constant speed operation. Through this experiment, students can understand the concept of "synchronization" and the special characteristics of start-up and stop control.
5. Three-Phase Dual-Speed ​​Motor Experiment
Dual-speed motors achieve stepped speed regulation by changing the stator winding connection to alter the number of pole pairs. The experiment includes high-speed/low-speed switching and speed variation control, allowing students to understand the relationship between the number of pole pairs and rotational speed.
6. Comprehensive Motor Experiment
After mastering individual motor control, comprehensive experiments will guide students to conduct deeper exploration:
Load Characteristic Testing: Understanding the motor's performance under different loads
Functional Technical Parameter Testing: Measuring key indicators such as efficiency and power factor
Electrical Parameter Testing: In-depth analysis of the relationship between voltage, current, and power.
 
V.Conclusion
For electrical engineering and automation majors, the MR242E induction motor experimental equipment is more than just a power supply and instrument rack; it's a fully functional "motor control laboratory." It transforms complex motor theory into a visual, measurable, and operable hands-on experience.
Whether you are a teacher setting up a motor lab or a student eager to improve your practical skills, this equipment provides an excellent platform for in-depth exploration of the world of motors. If you are interested in the specific configuration of the equipment or the experimental manual, please leave a message to discuss!