Precautions for the installation of high-voltage connector sockets

Precautions for the installation of high-voltage connector sockets

(1)The voltage selection needs to be matched: the rated voltage of the whole vehicle after load calculation should be less than or equal to the rated voltage of the connector. If the working voltage of the whole vehicle exceeds the rated voltage of the connector for a long time, the electrical connector has the risk of creeping and ablation.

(2)Current selection needs to be matched: the rated current of the whole vehicle after load calculation should be less than or equal to the rated current of the connector. If the working current of the whole vehicle exceeds the rated current of the connector for a long time, the electrical connector may be overloaded and ablated.

(3) Cable selection needs to be matched: the vehicle cable selection and matching are divided into cable current-carrying matching and cable and connector sealing matching. Regarding cable current-carrying, each main engine factory has specialized electrical engineers to carry out matching design, which will not be explained here. .

Seal matching: The connector and cable seal rely on the elastic compression of the rubber seal to provide the contact pressure between the two, thereby achieving reliable protection performance, such as IP67; according to calculations, the realization of a specific contact pressure depends on the specific compression of the seal, and accordingly Introduced, if reliable protection is required, the sealing protection of the connector has specific size requirements for the cable at the beginning of the design;

The current-carrying section of the same specification, the cable can have different outer diameters, such as shielded cable and unshielded cable, national standard cable and LV216 standard cable, which cable is specifically matched, the connector selection specification has a clear statement, so connect Particular attention should be paid to the specification requirements of the adapter cable when selecting the type of the connector to prevent failure of the connector seal.

(4) The whole vehicle needs flexible wiring: For the wiring of the whole vehicle, each OEM has requirements for bending radius and slack; according to the use case of the connector in the whole vehicle, it is recommended that the connector terminal itself is not stressed after the wiring harness is assembled. Only when the wiring harness as a whole is subjected to vibration or impact due to the vehicle’s operation, the strain relief is achieved through the flexibility of the wiring harness. Even if a little strain is transmitted to the connector terminals, the stress generated does not exceed the design holding force of the terminal in the connector.