標準號：IEEE C 37.27-2008
中文標準名稱：分開安裝的限流熔斷器的低電壓交流電源斷路器的應用指南
英文標準名稱：Application guide for low-voltage ac power circuit breakers applied with separately-mounted current-limiting fuses
標準類型：K31
發布日期：2008/12/10 12:00:00
實施日期：1999/12/31 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：ANSI C37.16;ANSI C37.50;IEEE C37.13;IEEE C37.13.1;IEEE C37.20.1;IEEE C37.26;IEEE C37.59;IEEE C37.100;IEEE 141;IEEE 241;IEEE 242;NEMA FU-1;UL 248-1
適用范圍：This guide applies to low-voltage ac power circuit breakers of the 635 V maximum voltage class withseparately-mounted current-limiting fuses for use on ac circuits with available short-circuit currents of200 000 A (rms symmetrical) or less. Low-voltage ac fused power circuit breakers and combinations offuses and molded-case circuit breakers are not covered by this guide.This guide sets forth recommendations believed essential for the selection of current-limiting fuses (seeNEMA FU-11 and UL 248-1) for use in combination with low-voltage ac power circuit breakers, rated inaccordance with IEEE Std C37.13? and applied in metal-enclosed low-voltage power circuit breakerswitchgear in accordance with ANSI/IEEE Std C37.20.1?.NOTE—The combination of a circuit breaker and separately mounted fuses is limited to 600 V based on fusemaximum voltage ratings.