规定了一般操作特性和标准化原则。没有从尺寸的角度定义连接系统的特定模式，但规定了每个系统的设计和性能限制。本部分规定了机械结构和电气性能的基本要求以及使用中的基本环境条件。

Specifies the general operating characteristics and standardization principles. Does not define a specific pattern for the connection system from the point of view of dimensions, but lays down limits for the design and performance for each system. This part lays down the basic requirements for the mechanical structure and electrical performances as well as the basic environmental conditions in service.