1Advantages of electric dynamometer

1TraditionaldynamometerThe loading method includes eddy current dynamometer、Hysteresis dynamometer、magnetic powderdynamometerWait. Eddy current loading has poor low-speed performance, and even cannot be loaded at low speeds; magnetic powderdynamometerCannot be used in high-speed applications, and hysteresis dynamometers are not suitable for high-power applications, and all of the above types of dynamometers require the installation of a cooling water circulation system, and can only be used as a single storage loading device.Electric dynamometerNo need for cooling auxiliary facilities, bringing great convenience to use.

2Electric dynamometerUsing a unique fully digital control device, the electric dynamometer has power-There are two operating states for measuring power, which can operate in four quadrant mode and can be used as both a generator and an electric motor; It can be loaded forward or backward.

3. During dynamometer operation, the mechanical energy of the generator is converted into electrical energy for consumption (feedback to the grid), which saves energy and has a very significant energy-saving effect.

4. Fast dynamic response and good control characteristics.

5. Simple structure, good stability and reliability, easy to use, and simple maintenance.

6. The stability of constant torque and constant speed control is unparalleled by other loaders, as it can maintain extremely high stability (0.1% -0.3%) throughout the entire speed (even at zero speed) and torque range.

7. It can easily achieve zero torque and zero speed starting, to achieve true impact free soft starting for the power grid and machinery.

8. It can perform performance tests on asynchronous motors very ideally, including M-S curve testing, maximum torque, minimum torque, and locked rotor torque testing.

9. Based on the characteristics of the tested motor, choose the appropriate type of electric dynamometer. AC electric dynamometer is particularly suitable for situations where the motor speed is high.

2、 Main configuration

1AC power dynamometer host

2. Electrical control cabinet (AC motor control device, logic control circuit, interface circuit)wait）

3systemConsole (dynamometer controller, electrical parameter measuring instrumentLow resistance measuring instrument, temperature inspection instrumentComputer, printerControl switches, etc）

4Motor specific testingcast iron plate

5. Loading motor and installation fixture for tested motor

6Torque and speed sensorAnd bracket

7. Variable frequency drive

8. Resistance cabinet

9Specialized testing software

10Strong current cabinet

11Power supply device(AC variable frequency power supply, voltage regulator or DC stabilized power supply)

3、 Main functions

1. No load test

2. Load test

3. Blockage test

4. Energy feedback test

5. Aging test

6. Temperature rise test

7. Overload test

8. Overspeed test

9. T-N curve

10. Other customer specified tests