標準號：BS EN 60947-5-8-2006
中文標準名稱：低壓開關設備和控制設備.第5-8部分:控制電路器件和開關元件.三相啟動開關
英文標準名稱：Low-voltage switchgear and controlgear - Part 5-8: Control circuit devices and switching elements - Three-position enabling switches
標準類型：K30
發布日期：2007/1/31 12:00:00
實施日期：2007/1/31 12:00:00
中國標準分類號：K30
國際標準分類號：29.130.20
引用標準：IEC 60068-2-1-1990;IEC 60068-2-1 AMD 1-1993;IEC 60068-2-1 AMD 2-1994;IEC 60068-2-6-1995;IEC 60068-2-27-1987
適用范圍：This part of IEC 60947 specifies requirements for three-position enabling switches.These switches are used as components of enabling devices described in 10.9 ofIEC 60204-1 to provide signals that,a) when activated, allow machine operation to be initiated by a separate start control, andb) when de-activated,i) initiate a stop function, andii) prevent initiation of machine operation.NOTE 1 The enabling control function is described in 9.2.6.3 of IEC 60204-1.NOTE 2 This standard does not deal with enabling devices.This standard does not apply to:? three-position enabling switches for non-electrical control circuits, for example hydraulic, pneumatic;? enabling switches without three-position mechanism;? emergency stop devices (see IEC 60947-5-5).