Product Details

I. Product Features:

◆ Basic composition of the test system

The test system consists of test power supply, power switch cabinets, signal sensing devices and power measurement equipment, automated test measurement units, control console, AC motor test software system, database system, and other components. The load equipment for type tests can be selected according to user requirements, including companion motors (such as DC generators, AC generators, wound-rotor motors), eddy current dynamometers, magnetic powder dynamometers, magnetic powder brakes, and other equipment, to meet the type test needs of different motors. 

◆ Measurement method: Microcomputer-based measurement

The measurement cabinet is equipped with current and voltage sensors, and the intermediate links use signal conditioning interface modules. The computer completes signal acquisition and measurement tasks.

◆ Control method: Direct control using automotive-grade MCU

It uses German Siemens automotive-grade microcontrollers for interlocking control. The interlocking program can be customized and modified according to user requirements. The control system has stable performance and good scalability.

◆ Operation mode: Both manual and automatic operation modes coexist

To avoid affecting test work in case of computer failure, a combination of manual control (panel button operation) and automatic control (computer keyboard/mouse operation) is adopted. If automatic control is not convenient or the computer fails, manual operation can be used for testing.

◆ Test data processing: Test results are saved in the industrial computer or server

The microcomputer test bench is equipped with original industrial computers from well-known domestic and international brands. The result data of automatic tests is directly saved in the hard disk of the test industrial computer. Manually measured data can be entered into the test software interface and then saved in the memory. It provides local database functions, allowing local query and access of test data, and is designed with automatic test report generation and output printing functions (equipped with HP multifunction laser printer).

◆ High measurement accuracy and good repeatability;

◆ Stable control system performance and good system scalability.

II. Product Parameters:

◆ Design principles

The design principles are reliability, safety, economy, practicality, operability, and maintainability, while also considering advanced technology.

◆ Applicable scope

Suitable for rated voltages of 380V, 660V, 1140V, 3300V, 6000V, 10000V; rated power from 1 to 15000kW, for factory and maintenance tests of three-phase asynchronous motors.

◆ Operating conditions

◇ The rated working temperature of the central control room is +20℃, with an allowable variation range of 0℃ to 45℃, and relative air humidity not exceeding 85%;

◇ The central control room should be far from electromagnetic field interference and mechanical vibration, and avoid corrosion by corrosive gases;

◇ The ambient temperature for the cabinet area and equipment area is -5℃ to +45℃, with relative air humidity not exceeding 80% at +40℃ and not exceeding 85% at +25℃;

◇ The air must not contain excessive dust, acids, salts, corrosive, or explosive gases;

◇ Installation altitude should not exceed 1000m.

◆ Test items

Users can select the following test items according to their own requirements:

◇ Ambient temperature measurement;

◇ Insulation resistance measurement;

◇ DC resistance measurement (calculate three-phase resistance unbalance);

◇ Power frequency withstand voltage test;

◇ Turn-to-turn withstand voltage test;

◇ No-load test (calculate three-phase current unbalance);

◇ Locked-rotor test;

◇ Load test;

◇ Efficiency test;

◇ Temperature rise test.

The system completes measurement and calculation of voltage, current, power factor, active power, reactive power, efficiency, frequency, output torque, output speed, output power, temperature rise, etc.

◆ Main technical parameters:

◇ No-load, locked-rotor, load test, temperature rise:

Current measurement accuracy: 0.2%FS±3d;

Voltage measurement accuracy: 0.2%FS±3d;

Power measurement accuracy: 0.5%FS±3d;

Current unbalance calculation: 0.1%FS±3d;

Temperature measurement accuracy: 0.5%±2d;

Speed measurement accuracy: 0.2%FS±3d;

Torque measurement accuracy: 0.2%FS±3d;

◇ Power frequency withstand voltage test:

High voltage: 0～100000V adjustable;

High voltage current: 0～3000mA;

Withstand voltage time: 0～9999S;

◇ Turn-to-turn impulse withstand voltage test:

Voltage peak: < 30000V, adjustable;

Wavefront time: < 0.5us, adjustable;

◇ Insulation resistance measurement

Measurement range: < 200GΩ;

Measurement accuracy: 5%FS±5d;

◇ DC resistance measurement:

Measurement current: < 10A;

Measurement resistance: 0～20kΩ;

Minimum resolution: 1uΩ;

Resistance unbalance calculation: 0.1%FS±3d;

Measurement accuracy: 0.2%FS±3d.



The development of science and technology has put forward higher and higher requirements for motor performance and quality indicators. The development of motor testing technology is closely related to the development of the motor industry. Motor testing is an important part of comprehensive evaluation of motor assembly quality and technical performance, and is an important process in motor manufacturing and production. Traditional test equipment and methods, due to long operation time, many instruments to observe, manual reading of test data and data analysis and calculation, affect the quality and accuracy of motor testing to a certain extent. With the further improvement of current motor design level, process level, and the continuous improvement of motor raw material performance, the performance and quality indicators of motors have been greatly improved. Therefore, the requirements for motor testing technology are also increasing.

In recent years, with the advancement of science and technology, it is imperative to improve motor testing efficiency, reduce operator labor intensity, improve testing accuracy and test quality. Due to the enrichment of testing theories, the progress of testing methods, the improvement of equipment accuracy, and the wide application of automated testing systems and computers in testing, motor testing technology has indeed developed by leaps and bounds.

Motor testing is the inspection of electrical performance, mechanical performance, safety performance, reliability, and other technical indicators of semi-finished and finished products in the motor manufacturing process, or supporting products with motors as the main body, using instruments, meters, and related equipment according to relevant regulations. Through these inspections, the relevant performance data of the tested motor can be fully or partially reflected. With these data, it can be judged whether the tested motor meets the design requirements, the quality is good or bad, and the goals and directions for improvement. Motor testing and inspection is an indispensable and important part of motor research, production, and maintenance. Therefore, for units engaged in motor research, production, or maintenance, it is very necessary to have a set of motor testing and inspection equipment that meets the requirements.

The AC motor comprehensive test bench adopts advanced virtual instrument technology, combining the powerful computing capabilities of computers with the hardware measurement and control capabilities of instruments and equipment. Through software, it realizes test control and data calculation, analysis, processing, display, printing, and storage, making the system functions far exceed the simple combination of general instruments. Especially in terms of result storage, waveform storage, synchronous measurement, test report generation, system scalability, and multi-functionality, it shows superiority that traditional manual test benches cannot match.

The entire system is fully automated, fully computerized, and highly efficient, with anti-misoperation safety function design. WINDOWS Chinese interface operation, automatic collection of measurement data, automatic calculation of results, automatic generation of factory test reports and print output. The measurement and control system adopts PLC programming control, especially suitable for occasions with high product requirements and batch testing.



Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.