Industrial connectors are connectors used to install electrical circuits, wires and cables in electrical equipment in the industry, mainly to protect them from normal operation, so that they are not affected by external environment and foreign materials, resulting in electrical equipment failure, and even A short circuit occurs. The industrial connector has four basic functions: connection function, electrical function, environmental function and protection function.
The connection function of the industrial connector is the most important part of its function. Testing the insertion force of an industrial connector is a test method to check whether its performance is passed. There is a clear definition of the maximum insertion force and minimum separation force for industrial connectors in national standards and international standards: the insertion force is generally required to be small, and the separation force requirements are changed according to the actual conditions. If it is too small, it will affect the industrial connector. Reliability of contact. The connection function of the industrial connector can also determine its mechanical life, mainly according to the one-time insertion and one-time extraction as the detection standard (generally, whether the connector can continue to complete the connection function after the plugging cycle), and the industrial connector is inspected. Whether it can maintain normal working conditions after multiple insertions and removals. Similarly, the structure of the contact, the sliding friction index and the dimensional accuracy also affect the length of use of the industrial connector.
The electrical functions of industrial connectors include three main functions: contact resistance, insulation resistance and electrical strength. Since the industrial connector is a device for preventing leakage or short circuit of the circuit due to external problems, it must have the function of protecting the electric appliance. High quality industrial connectors should have a small contact resistance, typically in the range of a few milliohms to tens of milliohms, to ensure the stability of their electrical performance. The insulation resistance should meet the insulation performance standard between the contacts of the industrial connector and the contact and the outer casing, and should generally be in the range of hundreds of megaohms to several gigaohms. The strength of the electrical resistance refers to the ability to withstand the rated test voltage between the connector contacts or between the contacts and the outer casing.
Industrial connectors also need to ensure that they have perfect environmental functions. Generally, it should be waterproof, dustproof and high temperature resistant, and it should be protected against impact and impact. In general, the operating environment of an industrial connector must not exceed a temperature of 200 ° C and a minimum of -65 ° C. The main reason for this regulation is that the current will cause heat to rise at the contact point during operation, so the standard is generally the sum of the ambient temperature and the temperature at which the junction heats up. And to prevent the intrusion of moisture and water vapor, otherwise it will affect the insulation performance of industrial connectors and rust the metal parts of industrial connectors. Impact and impact resistance are also key features of industrial connectors that determine the ruggedness and reliability of industrial connectors. Of course, in addition to the above characteristics, industrial connectors also have high-strength sealing and low-pressure performance.
Electrical function is the soul of industrial connectors, the connection function is the basis of industrial connectors, environmental functions are essential for industrial connectors, and protection functions are regarded as the ultimate goal of industrial connectors. The primary purpose of industrial connectors is to protect the appliance from power outages and failures without any factor. Industrial connectors are widely used because they not only have a connection function, but also prevent water and dust from entering the connector to protect the current and voltage of the circuit.