ISO 20474-12:2017给出了ISO 6165中定义的电缆挖掘机的特定安全要求。它将与ISO 20474？1一起使用，该标准规定了两个或更多土方机械系列通用的一般安全要求。本文件中给出的具体要求优先于ISO 20474-1的一般要求。 ISO 20474-12:2017规定了在其范围内（见ISO 20474-1:2017，附录A）与土方机械有关的所有重大危险、危险情况和事件，这些危险、危险情况和事件是在按照预期使用或在制造商合理预见的误用情况下发生的。它规定了适当的技术措施，以消除或减少调试、运行和维护期间相关危险、危险情况或事件产生的风险。 如果电缆挖掘机拟与其他设备或附件（如钻机）以及用于打桩或提取和移动的设备或附件（如轨道、步行腿、浮筒、船舶设备或固定底盘）结合使用，则仅适用于机器本身。它不涉及与此类附加设备或附件相关的特定危险。 ISO 20474-12:2017不适用于发布日期之前制造的机器。

ISO 20474-12:2017 gives the safety requirements specific to cable excavators as defined in ISO 6165. It is intended to be used in conjunction with ISO 20474？1, which specifies general safety requirements common to two or more earth-moving machine families. The specific requirements given in this document take precedence over the general requirements of ISO 20474？1. ISO 20474-12:2017 deals with all significant hazards, hazardous situations and events relevant to the earth-moving machinery within its scope (see ISO 20474？1:2017, Annex A) when used as intended or under conditions of misuse reasonably foreseeable by the manufacturer. It specifies the appropriate technical measures for eliminating or reducing risks arising from relevant hazards, hazardous situations or events during commissioning, operation and maintenance. It is applicable only to the machine itself if the cable excavator is intended for use in combination with other equipment or attachments such as drill rigs and those for pile driving or extracting and moving (e.g. rail-track, walking legs, pontoon, ship equipment or stationary undercarriages). It does not deal with the specific hazards relevant to such additional equipment or attachments. ISO 20474-12:2017 is not applicable to machines manufactured before the date of its publication.