Adjust the pressure/vacuum source of the air source pipeline. When the air pressure in the system under test reaches 30KPa positive pressure or 30KPa negative pressure, keep the air pressure stable, close the pressure air source, and start measuring 15 seconds later, read the system air pressure P, The leakage air pressure value δP is the difference between the measured air pressure P and the initial value, and the leakage should be no more than 100pa, which is considered qualified.

Voltage drop test
The voltage drop test of the high-voltage wire harness assembly is mainly aimed at the measurement of the terminal crimping part, which is used to evaluate whether the crimping of the terminal crimping area of the wire harness assembly meets the requirements after the environmental test is completed. This part of the test can be manufactured by wires/terminals The supplier of the wiring harness assembly can directly quote the report after checking the report, and can also entrust a third-party laboratory to conduct a voltage drop test on the high-voltage assembly parts and issue a report.