Common environmental properties include low temperature, constant damp heat, alternating damp heat, salt spray test, sulfur dioxide test, hydrogen sulfide test.
Temperature resistance
At present, the maximum working temperature of the connector is 200°C (except for a few high-temperature special connectors), and the minimum temperature is -65°C. In some specifications, the maximum temperature rise allowed by the connector at the rated operating current is clearly specified.
Moisture resistance
The intrusion of moisture can affect the insulation performance of the connection and corrode metal parts. The constant damp heat test conditions are relative humidity 90%~95% (according to product specifications, up to 98%), temperature +40±20℃, and the test time is at least 96 hours according to the product regulations. The alternating damp heat test is more severe.
Resistant to salt spray
When the connector works in an environment containing moisture and salt, its metal structural parts and the surface treatment layer of the contact parts may produce galvanic corrosion, which affects the physical and electrical properties of the connector. To evaluate the ability of electrical connectors to withstand this environment, the salt spray test is specified. It is to hang the connector in a temperature-controlled test box, and spray the sodium chloride solution with the specified concentration with compressed air to form a salt fog atmosphere. The exposure time is specified by the product specification, at least 48 hours.
Other environmental performance
According to the requirements of use, other environmental properties of the electrical connector include sealing (air leakage, liquid pressure), liquid immersion (the ability to resist deterioration of specific liquids), low air pressure, and the like.
Other environmental performance
According to the requirements of use, other environmental properties of the electrical connector include sealing (air leakage, liquid pressure), liquid immersion (the ability to resist deterioration of specific liquids), low air pressure, and the like.
