Common environmental performance indicators for outdoor waterproof connectors

1. Moisture Resistance: The intrusion of moisture has a great impact on the connector's insulation performance and tends to rust metal parts. Constant moisture and heat test conditions are relative humidity of 95% (according to product specifications, the higher for 98%), the temperature is + 40 ± 20oC, and according to product specifications of the test time of at least 96h. Alternate moisture and heat test is more stringent. 2. heat resistance: At present, outdoor waterproof connector manufacturers of connectors for the higher operating temperature of 200oC (except for special high-temperature connectors), lower temperature of -65oC. When the connector works, the current in the contact point generates heat, resulting in an increase in temperature. Therefore, it is generally accepted that the operating temperature should be equal to the ambient temperature plus the contact temperature. 3. Salt spray resistance: When the connector works in an environment containing moisture and salt, the plating layer on the surface of the metal structure and contact parts will produce galvanic corrosion, which will affect the physical and electrical properties of the connector. Salt spray testing involves suspending the connector in a temperature-controlled test chamber and spraying it with compressed air at a specified concentration of sodium chloride solution to create a salt spray atmosphere. The exposure time should be specified by the product specification for at least 48 hours.4. Vibration and Shock Resistance: Vibration and shock resistance are important properties of electrical connectors, especially in aviation and aerospace, rail and road transportation and other special applications. Testing the robustness of the mechanical structure of the electrical connector and the reliability of the electrical contact is an important indicator.

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