概述/Specification

FKN12A-12D压气式负荷开关，FKRN12A-12D系列压气式负荷开关一熔断器组合电器，适用于12kV及以下三相配电系统中，作为变压器、电缆、架空线路等电力设备的控制和保护之用；特别适用于城网、农网的终端变电站及箱式变电站。并适用于环网、双辐射供电单元的控制和保护。

FKN12A-12D系列压气式负荷开关可以分合负载电流和过载电流。

FKRN12A-12D系列压气式负荷开关一熔断器组合电器可以分合负载电流，过载电流，开断线路短路电流。

FKN12A-12D Series air-blast load break switch and FKRN12A-12D series air-blast load break switch-fuse combination apparatus are new seriesswitchgear applies to three-phase electric distribution system of rated 12KV,acting as protecting and control apparatus for transformers,cable and overheadwiring.These series are especially applicable in rural,urban terminal substation and prefabricated substations,as well as ring network power supply.FKN12A-12D Series air-blast load break switch can break and make load current and over-current.

FKRN12A-12D Series air-blast load break switch can break and make over-current,load current and short-circuit current(limited current fuse).This product is featured with impact structure,aesthetic appearance reliable interlock and high insulating level.In the spring storage operatingmechanism.ON/OFF speed is free from the influence of the manpower.For the arc-extinguish electric arc-extinguish inside the insulating cover.the free gasoccurs at sparking do not cause descend of insulating level between phases and phase to earth.The insulating cover clapboard separates electrified part thusboost protection grade of ring main unit.The copper-tungsten contact and main contact brings along reliable conductivity and long life.This product achievessound fame due to easy maintenance and operations as well as reliable performance.It is in compliance with per IEC62271-105.

正常使用条件/Ambient condition

1、周围空气温度上限：+40℃下限：-25℃。

2、海拔高度不1000m。

3、相对湿度日平均值不大于95%月平均值不大于90%。

4、地震烈度不超过8度。

5、无火灾、爆炸危险，化学腐蚀及剧烈振动的场所。

6、污秽等级：Il。

1.Ambient temperature -25℃-+40℃。

2.Elevation≤1000m。

3.Humidity:daily average humidity≤95%,monthly≤90%。

4.The earthquake does not exceed degree 8。

5.No fire,explosion,chemical errosion。

6.Pollution:level 2。

结构特点/Structural features

1、负荷开关、接地开关、熔断器及机构在一个框架上，可灵活组合，结构紧凑，体积小安装方便易。

2、断口为直动式布置，动、热稳定电流参数高，一次性完成操作。

3、具有静触头绝缘罩，使环网柜在结构上实现了隔离，省去了相间绝缘隔板，断口绝缘插板，可防内弧光短路事故。

4、具有独特的活门结构，负荷开关分闸后，活门自动将断口隔离，防护性能好。

5、负荷开关与接地开关、熔断器之间有可靠的机械闭锁装置，满足“五防”要求。

6、具有手动操作及交直流两用操作电源的电动操作两种形式，便于实现电力系统“三遥”要求。

1,load switch,grounding switch,fuse and institutions in a framework that can be flexibly combined,compact,convenient and easy to install a smallvolume.

2,the fracture is direct acting arrangement,dynamic and thermal stablity current parameters is high.time to complete the operation.

3.with static contact insulation cover,so RMU in the structure to achieve the isolation,eliminating the phase insulating spacer,fracture insulation boardsthat can prevent internal arc short circuit accident.

4,has a unique valve structure,load switch after opening the shutter automatically fracture isolation,good protective properties.

5.load switch and grounding switch.a reliable mechanical locking device between the fuse,to meet the Five Ant'requirements.

Two forms of electric operations 6,with manual operation and AC and DC operating power supply,easy to implement power system."three remote'requirements.

产品型号含义/Model implication

外形安装尺寸/Overall dimension