Some related knowledge about dynamometers

　　DynamometerThe dynamometer and its testing system consist of a dynamometer (hysteresis, magnetic powder, eddy current, hydraulic power), controller, electrical parameter instrument (single-phase, three-phase, DC), computer, etc. It can change the motor's input voltage, current, power, output torque, speed, output power, and efficiency under no-load, load, and locked rotor conditions.

　　1. Supporting equipment for the dynamometer: speed and torque measuring instrument, electrical parameter measuring instrument, AC variable frequency power supply/DC power supply (optional power supply), fixing device, computer, etc. In addition, the dynamometer can be equipped with a dynamic controller and load durability controller in the unstable region of the asynchronous motor.

　　2. Measurement range of the dynamometer: Voltage: 0-600 volts, Current: 0-40A (both voltage and current can be expanded); Speed: 0-30000 RPM, Torque: 0-6000 N·m;

　　3. Measurement accuracy of the dynamometer: Voltage ≤ 0.5%, Current ≤ 0.5%, Speed ≤ 0.2%, Torque ≤ 0.5%;

　　4. The dynamometer measures voltage, current, power, speed, and torque simultaneously;

　　5. The software uses serial communication to collect data, has a user-friendly interface, is easy to operate, and is stable and reliable;

　　6. It has manual and automatic testing functions, and the testing parameters can be set by the software;

　　7. It has the function of drawing the characteristic curve of the tested motor, generating reports, and printing report curves;

　　8. It has functions such as speed feedback control, torque compensation control, constant speed and constant torque, installs a dynamic controller in the unstable region of the asynchronous motor to test the characteristics of the unstable region, and installs a load durability controller on the motor to test the load durability of the motor.

　　9. Motor fixtures and clamping tables make motor installation convenient and reliable.

　　10. Applicable occasions: single-phase and three-phase asynchronous motors, DC motors, synchronous motors, series pole motors, power tools, shaded pole motors, speed-regulating motors, stepper motors, wiper motors, window motors, automotive heater motors, motorcycle starter motors, etc.