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The manufacturer of Construction machinery connection system will take you to understand: the basic performance of the connector

The manufacturer of Construction machinery connection system will take you to understand: the basic performance of the connector

(Summary description)The manufacturer of Construction machinery connection system tells you that the basic performance of connectors can be divided into three categories: mechanical performance, environmental performance and electrical performance.

The manufacturer of Construction machinery connection system will take you to understand: the basic performance of the connector

(Summary description)The manufacturer of Construction machinery connection system tells you that the basic performance of connectors can be divided into three categories: mechanical performance, environmental performance and electrical performance.

Information

The manufacturer of Construction machinery connection system tells you that the basic performance of connectors can be divided into three categories: mechanical performance, environmental performance and electrical performance.

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(1) Mechanical properties
The manufacturer of Construction machinery connection system tells you that in terms of connection function, plugging force is an important mechanical property. Insertion and extraction force is divided into insertion force and extraction force (extraction force is also called separation force), the requirements of the two are different.
Another important mechanical property is the mechanical life of the connector. Construction machinery connection system manufacturers tell you that mechanical life is actually a durability index, which is called mechanical operation in the national standard GB5095. It takes one insertion and one unplugging as a cycle, and whether the connector can normally complete its connection function (such as contact resistance value) after the specified plug-in cycle is used as the judgement basis.
The manufacturer of Construction machinery connection system tells you that the plug-in force and mechanical life of the connector are related to the contact structure (positive pressure), the coating quality of the contact part (sliding friction factor) and the dimensional accuracy of the contact arrangement (alignment).
(2) Environmental performance
Common environmental properties include temperature resistance, humidity resistance, salt spray resistance, vibration resistance and impact resistance.
①Temperature resistance. At present, the maximum working temperature of the connector is 200oC (except for a few high-temperature special connectors), and the lowest temperature is -65oC. The manufacturer of Construction machinery connection system tells you that when the connector is working, the current generates heat at the contact point, which leads to a temperature rise. Therefore, it is generally believed that the working temperature should be equal to the sum of the ambient temperature and the temperature of the contact point. In some specifications, the maximum temperature rise allowed by the connector under the rated operating current is clearly specified.
② Humidity resistance. The intrusion of moisture will affect the insulation performance of the connector and rust metal parts. The constant humidity test conditions are 90%-95% relative humidity (up to 98% according to product specifications), temperature +40±20oC, and the test time is at least 96h according to product specifications. The alternating damp heat test is more stringent.
③Salt spray resistance. The manufacturer of Construction machinery connection system tells you that when the connector works in an environment containing moisture and salt, the metal structure and the surface treatment layer of the contact member may produce galvanic corrosion, which affects the physical and electrical properties of the connector.
④ Vibration and shock resistance. Vibration and shock resistance are important properties of electrical connectors. The manufacturer of Construction machinery connection system tells you that it is particularly important in special application environments such as aviation and aerospace, railway and road transportation. It is to test the robustness and mechanical structure of electrical connectors. An important indicator of electrical contact reliability.
⑤Other environmental performance. According to the requirements of use, other environmental properties of the electrical connector include airtightness (air leakage, liquid pressure), liquid immersion (resistance to specific liquids) and low air pressure.
(3) Electrical performance
The manufacturer of Construction machinery connection system tells you that the main electrical properties of the connector include contact resistance, insulation resistance and dielectric strength.
① Contact resistance. High-quality electrical connectors should have low and stable contact resistance. The contact resistance of the connector ranges from a few milliohms to tens of milliohms.
②Insulation resistance. The manufacturer of Construction machinery connection system tells you the index to measure the insulation performance between the electrical connector plugs and between the contact piece and the shell, and its magnitude ranges from hundreds of megohms to several thousand megohms.
③ Dielectric strength. Dielectric strength, also known as withstand voltage and dielectric withstand voltage, is the ability to withstand the rated test voltage between the connector contacts or between the contacts and the shell.
④Other electrical properties. The manufacturer of Construction machinery connection system tells you that the electromagnetic interference leakage attenuation is to evaluate the electromagnetic interference shielding effect of the connector, and the electromagnetic interference leakage attenuation is to evaluate the electromagnetic interference shielding effect of the connector, which is generally tested in the frequency range of 100MHz~10GHz.

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