IEC 62271的本部分适用于额定电压大于1kV，小于等于52kV，用于50Hz或60Hz三相交流系统的三极操作熔断电路开关。 它们可以作为独立开关设备或嵌入式控制设备进行设计。 它们用于仅需要正常机械和电气耐久能力的电路或应用。此类应用包括高压/低压变压器的保护，但不包括配电线路或电缆，以及电机电路和电容器组电路。 低电流短路条件下，高达熔断电路开关额定接管电流，由适当布置的辅助装置（冲击器、继电器等）处理，使电路开关跳闸。采用限流熔断器，以确保装置的短路断开能力高于电路开关的短路断开能力。交叉引用:EN 60282-1:2009IEC 62271-1:2017IEC 62271-105:2012EN 62271-103:2011EN 62271-105:2012EN 62271-100:2009/A1:2012IEC 62271-100:2008/AMD2: 2017IEC 60282-1:2009/AMD1:2014EN 62271-1:2017IEC 60282-1:2009EN 62271-100:2009/A2:2017EN 60282-1:2009/A1:2014IEC 62271-100:2008/AMD1:2012IEC 62271-103:2011EN 62271-100:2009IEC 62271-100:2008IEC 62271-201IEC/TR 62655EN IEC 62271-200IEC 60050EN 62271-201EN 62271-200IEC 62271-1027。016购买本文件时提供的所有当前修订均包含在购买本文件中。

This part of IEC 62271 applies to three-pole-operated fused circuit-switchers designed with rated voltages above 1 kV up to and including 52 kV for use on three-phase alternating current systems of either 50 Hz or 60 Hz. They can be designed either as stand-alone devices, or be embedded in a switchgear and controlgear assembly. They are intended to be used for circuits or applications requiring only a normal mechanical and electrical endurance capability. Such applications cover protection of HV/LV transformers for instance, but exclude distribution lines or cables, as well as motor circuits and capacitor bank circuits. Short-circuit conditions with low currents, up to the fused circuit-switcher rated take-over current, are dealt with by supplementary devices (strikers, relays, etc.), properly arranged, tripping the circuit-switcher. Current-limiting fuses are incorporated in order to ensure that the short-circuit breaking capacity of the device is above that of the circuit-switcher alone.Cross References:EN 60282-1:2009IEC 62271-1:2017IEC 62271-105:2012EN 62271-103:2011EN 62271-105:2012EN 62271-100:2009/A1:2012IEC 62271-100:2008/AMD2:2017IEC 60282-1:2009/AMD1:2014EN 62271-1:2017IEC 60282-1:2009EN 62271-100:2009/A2:2017EN 60282-1:2009/A1:2014IEC 62271-100:2008/AMD1:2012IEC 62271-103:2011EN 62271-100:2009IEC 62271-100:2008IEC 62271-201IEC/TR 62655EN IEC 62271-102IEC 62271-200IEC 60050EN 62271-201EN 62271-200IEC 62271-102IEEE C37.016All current amendments available at time of purchase are included with the purchase of this document.