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AC Motor Comprehensive Test Bench |
Product Features:
◆ Basic composition of the test system
The test system consists of test power supply, power switch cabinet, signal sensing devices and power measurement equipment, automated test measurement units, control console, AC motor test software system, database system, etc. The load equipment for type tests can be selected according to user requirements, including companion motors (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 measurement
The measurement cabinet is equipped with current and voltage sensors, with signal conditioning interface modules in the intermediate links. The computer completes signal acquisition and measurement tasks.
◆ Control method: Direct control using automotive-grade MCU
It uses German Siemens automotive-grade microcontrollers for interlock control. The interlock program can be customized and modified according to user requirements. The control system has stable performance and good scalability.
◆ Operation method: Both manual and automatic operation modes coexist
To avoid affecting test work during computer failures, both manual control (panel button operation) and automatic control (computer keyboard/mouse operation) are adopted. If automatic control is inconvenient 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 industrial computer. Manually measured data can be entered into the test software interface and then saved in the memory, providing local database functions for local query and access of test data. It also has automatic test report generation and printing functions (equipped with HP multifunction laser printer).
◆ High measurement accuracy and good repeatability;
◆ Stable control system performance and good scalability.
Product Parameters:
◆ Design Principles
The design principles are reliability, safety, economy, practicality, operability, and maintainability, while also considering advanced technology.
◆ Applicable Scope
It meets the factory and maintenance tests for three-phase asynchronous motors with rated voltages of 380V, 660V, 1140V, 3300V, 6000V, 10000V; rated power from 1 to 15000kW.
◆ 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 in the cabinet area and equipment area is -5℃ to +45℃, with relative humidity not exceeding 80% at +40℃ and not exceeding 85% at +25℃;
◇ The air must not contain excessive dust, acid, salt, corrosive, or explosive gases;
◇ The 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 (calculating three-phase resistance unbalance);
◇ Power frequency withstand voltage test;
◇ Turn-to-turn withstand voltage test;
◇ No-load test (calculating 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 the 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, have affected 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 day by day.
In recent years, with the advancement of science and technology, it is imperative to improve motor testing efficiency, reduce operator labor intensity, and improve testing accuracy and quality. Due to the enrichment of testing theories, the advancement of testing methods, the improvement of equipment accuracy, and the widespread application of automated testing systems and electronic computers in testing, motor testing technology has indeed developed by leaps and bounds.
Motor testing is the inspection of technical indicators such as electrical performance, mechanical performance, safety performance, and reliability 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. Using these data, it can be judged whether the tested motor meets design requirements, the quality, and the goals and directions for improvement. Motor testing and inspection are indispensable important links in 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 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 expansion, and multifunctionality, 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 printing output. The measurement 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 published by Yangzhou Dari Electric Co., Ltd.
