標準號：BS EN 50274-2002
中文標準名稱：低壓開關裝置和控制裝置組件.防電擊穿.防止無意地直接與危害生命的部件接觸
英文標準名稱：Low-voltage switchgear and controlgear assemblies - Protection against electric shock - Protection against unintentional direct contact with hazardous live parts
標準類型：K31
發布日期：2002/7/23 12:00:00
實施日期：2002/7/23 12:00:00
中國標準分類號：K31
國際標準分類號：29.130.20
引用標準：EN 60529;EN 61032;EN 61140;IEC 60050-195;IEC 60050-826
適用范圍：This standard applies to low-voltage switchgear and controlgear assemblies with a rated voltage not exceeding AC 1 000 V or DC 1 500 V. It sets out the requirements for the provision of additional features to provide protection against electric shock from direct contact with hazardous live parts only for skilled and instructed persons when they are required to manually actuate devices within the assembly and where a level of protection for the operating face of not less than IPXXB cannot be achieved. These devices are those only accessible via a door or cover requiring a key or tool to open it or in an assembly located in an area set apart and where the access to that area is restricted solely to skilled or instructed persons. This standard does not apply to - manually operated devices and their locations where access is available to ordinary persons, - low-voltage switchgear and controlgear assemblies where the operating voltage does not exceed AC 50 V or DC 120 V and there is protective separation, in accordance with EN 61140, between these circuits and any other circuits, NOTE Voltages generated by means of auto-transformers, potentiometers, semiconductor components etc. do NOT meet these requirements. - low-voltage switchgear and controlgear assemblies where protection of persons is provided by limitation of steady-state touch current or charge in accordance with EN 61140.