IEC TS 63334:2021是一项技术规范，定义了根据IEC 60529进行的无源光学保护外壳和硬化光纤连接器（IP5X、IPX4、IPX5、IPX6）防尘和防水测试的条件。本文件中的条件补充了IEC 60529中规定的试验要求。包含导电体、电气连接件、无源电气部件、有源电气设备或传输信号或提供电源的电子设备的防护外壳和硬化连接器不在本文件的范围内。

IEC TS 63334:2021 which is a technical specification, defines the conditions for testing the protection against dust and water ingress of passive optical protective housings and hardened fibre optic connectors (IP5X, IPX4, IPX5, IPX6) performed according to IEC 60529. The conditions in this document supplement the test requirements specified in IEC 60529. Protective housings and hardened connectors containing electrical conductors, electrical connections, passive electrical components, active electrical equipment or electronics that transmit signals or provide power are not within the scope of this document.