標準號：IEEE C 37.20.1a-2005
中文標準名稱：金屬外殼低壓電力線路斷路器開關裝置.修改件1:短時和短路耐受電流試驗.多電纜連接的*小區域
英文標準名稱：Metal-enclosed low-voltage power circuit breaker switchgear - Amendment 1: Short-time and short-circuit withstand current tests - Minimum areas for multiple cable connections
標準類型：K43
發布日期：2005/12/30 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：K43
國際標準分類號：29.130.20
適用范圍：Low-voltage metal-enclosed switchgear-which contains either stationary or drawout, manually or electrically operated low-voltage ac or dc power circuit breakers in individual grounded metal compartments, in three-pole, two-pole, or single-pole construction-is covered. Rated maximum voltage levels are 254 V, 508 V, or 635 V (ac) and 300/325 V, 800 V, 1000 V, 1200 V, 1600 V, or 3200 V (dc). The standard deals with service conditions, ratings, temperature limitations, and classification of insulating materials, insulation (dielectric) withstand voltage requirements, test procedures, and application.