MNS低压开关柜

Low voltage switch cabinet

概述 General

新型低压抽出式开关柜适用于三相交流频率为50Hz，额定工作电压为400V ( 690V)，额定电流为4000A及以下的发、供电系统中，作为动力、配电和电动机集中控制、电容补偿之用。广泛应用于发电厂、石油、化工、冶金、纺织、高层建筑等场所，本产品符合IEC60439-1、GB7251.1、 JB/T9661 等标准。可实现或替代MNS、GCS、GCK柜型的所有方案，用户可根据需要选配组合，是目前行业中从生产到应用都有重大创新的低压抽出式新型柜体。

New-type low-voltage withdrawable switchgear is applicable for the power generation and supply system with three-phase AC frequency of 50Hz,rated working voltage of 400V (690V) and rated current of 4000A (or below) for power, distribution, motor control and capacitance compensation. It is widely used in power station, petroleum, chemical engineering, metallurgy, textile, and high-rise buildings, and meets the IEC60439-1, GB7251.1 and JB/T966 1 standards. The switchgear can realize or replace all schemes of MNS, GCS and GCK switchgears, being new low-voltage withdrawable switchgear in the industry with significant production and application innovation, which can be selected and combined as per the customer demands.

结构说明  Structure Description

1、新型手摇式推进机构应用于单元抽屉，分手操和电操两大类。为多圈省力推进方式，实现轻松、灵活、平稳推进与移出抽屉，三工位具有机械定位、显示，并带有位置声音提示功能，推进630A的三极、四极方案抽屉轻松灵活；合闸联锁具有再扣复位功能，推进机构原理与联锁机构为同行业*技术。

2、新型小型手拉式推进机构应用于1/2、1/4 抽屉单元，具有三位置锁定、显示、合闸联锁位置辅助电源功能，开关再扣复位功能;

3、抽屉新型推进联锁机构具有分离、试验、连接位置机械显示，电气接点与位置同步。

4、垂直通道：可选用半块功能板或铁制矩形通道，并能方便互换。

1. New-type hａnd -operated push mechanism (manual and electrical operation) in the way of multi-circle effort- saving push can be used in unitdrawer to realize the relaxed, flexible and smooth push and remove of drawer. Three-position switch is equipped with the function of mechanical positioning and display, as well as position voice prompt. The three-ａnd four-pole drawer pushing 630A is relaxed and flexible; closing interlocking has the function of re-trip resetting with advanced pushing and interlocking technology.

2. New-type tiny manual pushing mechanism applies 1/2 and 1/4 drawer unit with the functions of three-position locking, display, closing interlocking position assistance, and switch re-trip resetting.

3. New-type pushing interlocking mechanism can display separation, test and connection position, and synchronize electrical terminal and position.

4. Vertical channel: It can select half function board and iron rectangular channel to facilitate exchange.

主要特点  Main Features

1、框架为组合式结构，基本骨架由C型钢材组装而成;

2、每一个柜体分隔为三个室，即水平母线室、抽屉小室、电缆室。高低压成套开关柜各隔室之间用钢板或高强度阻燃塑料功能板相互隔开，上下层抽屉之间有带通风孔的金属板隔离，以有效防止开关元件因故障引起的飞弧或母线与其它线路短路造成的事故;

3、设计紧凑：以较小的空间容纳较多的功能单元;

4、结构件通用性强、组装灵活，以E=25mm为模数，结构及抽出式单元可以任意组合，以满足系统设计的需要;

5、抽屉采用双折边定位槽铆钉铆接工艺，同时双折边、铆钉工艺解决了板材毛刺、自攻螺丝尖伤手的缺陷;

6、抽屉分为1/4 单元抽屉、1/2 单元抽屉和全宽度抽屉（抽屉高度: 6E 8E 12E 16E 24E，E=25mm），所有零部件采用模具一次成型，真正实现同规格抽屉99%互换。

7、仪表板采用开启式空心结构，方便元器件安装、接线及检测，元器件安装空间增大，能满足96mm x 96mm外形的数显表安装，还可以安装其它灯钮等元件，空心处用钢板制作，方便制造开孔;

8、柜体防护等级为IP4X。

1. Frame is in combined structure with the main frame made of C-steel;

2. Each switchgear is divided into three compartments, namely horizontal bus compartment, drawer compartment and cable compartment. Compartments are divided by steel plate or high-stress flame-resistance plastic board, and the upper and lower drawers are divided by metal plates with vent holes to effectively prevent arcing caused by fault of switch element or the accident caused by short circuit of bus and other lines;

3. Compact design: Contain many function units with small space;

4. The structural components have the characteristics of strong commonality and high flexibility for assembly; taking E=25mm as module, the structural and withdrawable units can be combined randomly to meet system design requirements;

5. The drawer adopts the process of double-fold locating slot riveting by rivet which avoids the rag caused by plat or hａnd damage caused by selftapping screw.

6. Drawers are divided into 1/4, 1/2 and overall-width drawer (height: 6E, 8E, 12E, 16E, 24E, E=25mm). All the components are produced by mould at a time to realize the 99% exchange of drawers in the same specification.

7. Instrument panel is in the open hollow structure to facilitate element installation, wiring and detection. The installation space of element is enlargedto enable the installation of data display instrument (96mm x 96mm), and can also install other elements such as lamp knob. Hollow places are provided with steel plate to facilitate hole opening.

8. Switchgear protection grade is IP4X;