Product Introduction
The integrated motor test bench is designed for automated factory electrical testing of both three-phase asynchronous motors (including squirrel-cage and wound-rotor types) and DC motors. It verifies product compliance with control standards by performing a series of tests—such as DC, insulation resistance, inter-turn insulation, power frequency withstand voltage, and no-load testing for asynchronous motors, along with no-load testing for DC motors—and automatically generates a final test report.
Product Characteristics
Derintegrated ac motor test bed is designed to perform automated testing of key electrical and operational parameters for three-phase asynchronous motors. The integrated motor test bench factory measures DC resistance, insulation resistance, power frequency withstand voltage, inter-turn withstand voltage, locked rotor performance, and no-load characteristics, while also monitoring environmental conditions such as ambient temperature.
For DC motors, the integrated motor test bench manufactures automatically conducts no-load testing to evaluate performance under standard operating conditions without mechanical load.
A built-in evaluation function compares all collected test data against preset quality control limits. The integrated motor test bench supplier automatically determines whether each parameter meets the specified standards and records the compliance status.
Upon completion of testing, the system automatically generates a detailed test report summarizing all measurements, evaluation results, and relevant test conditions for documentation and quality assurance.
The hardware configuration includes dedicated measurement circuits, with one channel rated for 1000A and another for 100A, to accommodate a wide range of motor power ratings.
Comprehensive safety features are integrated into the design, including a safety interlock system, audible and visual alarm indicators, and an emergency stop function to ensure operator protection and equipment security during testing procedures.
Produktparameter
Measurement parameters range and precision
| Test item | Test range | Genauigkeit | Description | |
| Temperatur | -40-150℃ | ±1℃ | Environmental temperature measurement | |
| DC resistance | 0.01～2000Ω | 0.2% | Range divided into 6 levels, with automatic temperature compensation | |
| Isolationswiderstand | DC 500V/1～500MΩ | 0.5% | Automatic deduction of background | |
| Inter-turn testing | 400～3000Vp | 0.5% | Wavefront time: 0.2uS, automatic judgment of adjacent turns between 1/200 turns | |
| Power frequency withstand voltage test | Spannung standhalten | AC 400～3000V | 0.2% | |
| Leckstrom | 1～500mA | 0.2% | ||
| Current measuring | DC voltage | DC 50-800V | 0.5% | |
| DC current | DC 1-100A | 0.5% | ||
Test item and method
1、Three phase asynchronous motor
DC resistance test:
After starting the test, first measure the current ambient temperature as the basis for correcting the resistance; According to the resistance range set in the "Parameter Settings", select the corresponding range, measure the resistance of the three lines of the three-phase stator in sequence, and calculate the resistance imbalance. After converting according to the requirements of GB/T 1032-2023, compare the measurement results with the upper and lower limits set in the "Parameter Settings" to automatically determine whether they are qualified or not. If they are unqualified, terminate the testing of other projects on this line. If they are qualified, continue the testing of other projects on this line.
Insulation resistance test:
Before measuring this project, it is necessary to measure the background insulation of the equipment in advance to calculate the final actual measurement results. During testing, the testing equipment applies a DC voltage of 500V between the tested winding and the casing (ground wire). The measured insulation resistance is subtracted from the background and displayed as the test result output. It automatically determines whether it is qualified or not based on the preset lower limit value in the "parameter settings".
Interturn insulation test:
Before testing, standard waveform sampling should be done in advance to determine the sampling rate and amplification factor. During testing, the adjusted inter turn high voltage will be applied to both ends of the tested stator winding. Then, the testing program will overlay the collected oscillation waveforms generated by the three windings with the pre sampled standard waveform on the screen (to compare the overlap with the standard waveform). The testing program will automatically compare and calculate them, and judge the good or bad inter turn insulation strength based on the upper limit of the area difference set in the "parameter settings" and other standards.
No load test:
After the tested motor runs continuously under idle running until the loss is stable, adjust it to the rated voltage. By pressing the "Start" button for the second time, measure the voltage, current, power and frequency of the motor under no-load condition, and correct the measured data according to the voltage value set in "Parameter Setting", calculate the no-load current, power and current unevenness, judge whether it is qualified or not, and display all the data on the screen.
Power frequency withstand voltage and leakage current test:
Before measuring the project, it is also necessary to measure the background leakage current of the testing device; Apply the same power frequency high voltage between the tested motor winding and the shell to measure the leakage current generated, deduct the background and display it as the final result, and automatically judge whether it is qualified or not based on the upper and lower limits set in the "parameter settings".
2、DC motor
After the tested DC motor runs continuously in idle state until the loss stabilizes, the armature voltage, current, excitation voltage, and current of the DC motor under no-load are measured, and the qualification is judged. All data is displayed on the screen.
Application Scenarios
Motor production and factory inspection
The UHV-316 is suitable for the production and factory inspection of three-phase asynchronous motors and DC motors. It can perform multiple tests on motors, including DC resistance, insulation resistance, inter-turn withstand voltage, power-frequency withstand voltage, locked-rotor, and no-load tests, quickly determining whether products meet quality requirements.
Automated testing on motor production lines
The equipment can be applied to automated motor production lines, integrating multiple tests into a single testing platform to achieve automatic testing, data acquisition, and result judgment. This reduces manual operations and improves production efficiency and testing consistency.
Motor winding and insulation testing
Can be used for inter-turn insulation, insulation resistance, and withstand voltage testing during motor winding production and assembly, promptly identifying potential issues such as winding short circuits and insulation abnormalities, ensuring the electrical safety and product quality of motors.
Motor R&D and performance verification
Suitable for motor R&D laboratories and new product development. It can perform no-load, locked-rotor, and insulation performance tests on prototypes, providing reliable test data for product design, performance verification, and quality improvement.
Quality control and data traceability
The equipment supports automatic test result judgment and test report generation, and can record various motor test data, achieving standardized management from product testing to result determination. It meets the requirements of quality control and data traceability in batch production.
