The structure of the waterproof connector is generally divided into: metal contact conductor and shell metal.
Metal and plastic (nylon TA66) shell different points:
Mechanical life
Waterproof connector mechanical life refers to the number of plug-in life, industry standards are usually specified 500 to 1000 times. When the mechanical life is reached, the contact resistance, insulation resistance and pressure resistance of the waterproof connector shall not exceed the specified standard value. This is not the difference between the metal shell and the plastic shell.
2. Electrical performance
Rated voltage, rated current, contact resistance, insulation resistance according to the provisions of the standard value, which is the same metal and plastic shell.
3. Environmental parameters
Environmental parameters are mainly ambient temperature, humidity, temperature changes, atmospheric pressure and corrosion environment. Waterproof connectors in the use and storage, transport environment in which the environment has a significant impact on its performance, it must be based on the actual environmental conditions, the choice of the corresponding metal shell will be better than plastic.
4. Termination method
Termination refers to the waterproof connector male and female connector hardware contacts and wire and cable connection. Metal and plastic shell the same. Share it
Welding crimping screw
Comprehensive analysis, in addition to the need for connector with shielding function, the metal and nylon TA66 plastic shell performance difference is not significant. Plastic relative to the cost of metal shell is lower, the structure is more reasonable.