1、 Test product classification:1. AC/DC charging stand with cable.
2. AC/DC charging gun.
3. High voltage wiring harness.
2、 Test items:
1. Phase sequence test
2. Conduction resistance test.
3. Component testing (resistance, inductance, capacitance).
4. Electronic lock.
5. Temperature control resistor.
6. AC withstand voltage test, DC withstand voltage test, and insulation resistance test.
7. Air tightness test (IP67 standard).
3、 Architecture and composition of testing equipment:
1. Multi channel safety gauge tester 7632 (8 channels).
2. Four wire harness comprehensive tester 8700.
3. Air tightness test.
4. Temperature and humidity meter.
5. Switch boxes.
6. Industrial computers.
7. Test bench.
8. Test software.
9. Electric control part.
4： Specification parameters：
| Test items: | |
| project | specifications |
| Open/Short Circuit | 1KΩ ~ 50KΩ |
| Conduction | 0.1mΩ ~ 50.0Ω |
| resistance | Max.10.0MΩ |
| capacitance | 10pF ~ 1000uF |
| diode | 0-7V |
| insulation | voltage：0〜1KV Range：10MΩ ~ 10GΩ |
| AC withstand voltage | voltage：100V〜5KV Leakage current： 0〜20mA |
| DC withstand voltage | voltage：100V〜6KVLeakage current：0~12mA |
| Test time: | 0〜999S |
| leak test | Pressure Range ；0~100kpa |
5、 Equipment features:
1. Four wire measurement for more stable testing.
2. Computerized operation, all testing items and specifications are completed on the computer.
3. Can scan code for testing, and the test results are automatically stored.
4. It can automatically generate test reports.
5. After testing, labels can be automatically printed (requiring a label printer).
6. The testing software has an MES interface, and the test data can be connected to MES.
7. The testing software defines the function of the test pin, making it convenient for analyzing the fault of the tested object.
8. High pressure, conductivity, and airtightness tests have been completed in one go.
9. The testing software is managed at two levels: tester permissions and administrator permissions.
In terms of safety, the testing equipment has an emergency stop button and leakage protection function.6、 Test function implementation method:
Test process description: The test software controls the high-voltage tester, wiring harness tester, and airtightness tester through the 232 communication port. During the testing process, the electronic lock, phase sequence, temperature control resistance, and conduction resistance are tested first. After the low voltage test is completed, switch to the high voltage end through the electric control box, and then test the high voltage and insulation. When the high voltage is also tested, test the air tightness. After the test is completed, the software will display the test results and save the test result data. (Air tightness can be tested simultaneously with conduction and high pressure).7、 Safety protection:
1. The test bench adopts safety grating protection.
2. The communication method adopts optocoupler isolation, which makes communication more stable and has strong anti-interference ability.
3. The cylinders will be installed with in-situ and dynamic signals for more accurate and safe testing.
4. The equipment is equipped with leakage protectors and emergency stop buttons.
