ANSI/IEEE C37.20.1a:2005
金屬殼密封的低壓電力線路斷路器開關(guān)設(shè)備標(biāo)準(zhǔn).修改1:短時(shí)間和短路可耐電流測試;多電纜連接的最小區(qū)域
Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear - Amendment 1: Short-Time and Short-Circuit Withstand Current Tests; Minimum Areas for Multiple Cable Connections