What are the bits of the high voltage connector

Dustproof and waterproof. High-voltage connector protection level is IP67, in which his digit the first digit is said to be dustproof, the second is said to be waterproof, high-voltage connectors are connectors with an AC voltage of more than 1000V or DC voltage of more than 1500V, mainly used for vehicles, charging facilities, industrial equipment, medical equipment and so on.