概述   Outline

MNS 低压抽出式成套开关设备（以下简称为装置）是参考MNS 系列低压开关柜并加以综合改进后用标准模件生产制造的产品。本装置适用于交流 50Hz，额定工作电压 660V 及以下的系统。作为各种发电、输电、配电、电能转换和电能消耗设备的控制设备，能广泛应用于各工矿企业、大楼宾馆、市政建设等低压配电系统中。除一般陆用外，经过处理后，还可以用于海上石油钻采平台和核电站中。 

本装置符合 IEC439-1，GB7251.1标准。

MNS LV withdrawable switchgear (hereinafter referred to as device) is manufactured by standard module through consulting MNS series low voltage switch cabinet of Switzerland Co-mpany, and synthetically improved. The device is applicable to the system with AC 50Hz, rated working voltage 660V and below, used as control device for various power generation, transmission, distribution, power transfer and power consumption device. It is widely used in low voltage distribution system of various mining enterprise, tall building and hotel, municipal construction etc. Besides the general land use, after special disposal, it also can be used for marine petrol drill taken platform and nuclear power station. 

The device accords with international standard IEC439-1 and national standard GB7251.1.

主要特点  Main feature

1. 设计紧凑：以较小的空间能容纳较多的功能单元。 

2. 结构通用性强，组装灵活，以 25mm 为模数的 C 型型材能满足各种结构型式、防护等级、使用环境的要求。 

3. 采用标准模块设计：分别可组成保护、操作、转换、控制、调节、测定、指示等标准单元。用户可根据需要任意选用组装，以 200 余种零件可以组 成不同方案的柜架结构和抽屉单元。 

4. 安装性好：大量采用高强度阻燃型工程塑料组件，有效加强防护安全性能。 

5. 技术性能高：主要参数达到国内优良水平。

1. Compact design: Contain more function units with less space. 

2. Strong versatility for structure, flexible assembly. C type bar section of 25mm modulus can meet the demands of various structure and type, protection grade and operating environment. 

3. Adopt standard module design, can be combined into protection, operation, transfer, control, regulation, measurement, indication etc such standard units. User can choose assembly according to requirement at will. Cabinet structure and drawer unit can be formed with more than 200 components. 

4. Fine security: Adopt high strength antiflaming type engineering plastic pack in large quantity to effectively enhance the protective safety performance. 

5. High technical performance: Main parameters reach the advanced level at home.

主要技术参数  The main technical parameters

直母线额定工作电流： 单面或双面操作的抽出式 MCC 为 800A，柜深 1000mm 单面操作的 MCC 为 800~2000A。

Rated working current of vertical bus bar: Draw-out type MCC with single side or double sides operation: 800A. MCC with 1000mm depth and single operation: 800~2000A.

使用环境条件  Use environmental conditions

1. 周围空气温度不高于 +40℃，不低于 -5℃，并且 24h 内其平均温度不高于 +35℃。 

2. 大气条件：空气清洁，相对湿度在高温 +40℃时不超过 50%，在较低温度时允许有较高的相对湿度，例如 +20℃时为 90%，但应考虑到温度变化， 有可能会偶然产生适度的凝露。 

3. 海拔高度不超过 2000m。 

4. 本装置适应于以下温度的运输和储存过程：-25℃至 +55℃的范围之间，在短时间内（不超过 24h）可达 +70℃，在这些限温度下装置不应遭到任 何不可恢复的损伤，而且在正常的条件下应能正常工作。 

5. 如果上述使用条件不能满足时，应由用户和制造厂协商解决。 

6. 当本装置使用于海上石油钻采平台和核电站时，应另签订技术协议。

1. Ambient air temperature: -5℃ ~+40℃ and the average temperature should not exceed +35℃ in 24h. 

2. Air condition: With clean air. Relative humidity should not exceed 50% at +40℃ . Higher relative humidity is allowed at lower temperature. Ex. 90% at +20℃ . But in view of the temperature change, it is possible that moderate dews will produce casually. 

3. Altitude above sea level should not exceed 2000M. 

4. The device is suitable to the transportation and store with following temperature :-25℃ ~+55℃ , in short time (within 24h) it reaches +70℃ . Under the limiting temperature, device should not suffer damage that can't recover, and it can works normally under normal conditions. 5. If the above operating conditions not meet user's demand. Consult with manufactory. 6. Technical agreement should be signed additionally if the device is used for marine petrol drill taken platform and nuclear power station.

结构特点   Structural features

装置的基本柜架为组合式装配结构，柜架的基本结构件都经过镀锌处理，通过自攻锁紧螺钉或 8.8 级方角螺丝紧固互相连接成基本柜架，再按方 案变化需要，加上相应的门、封板、隔板、安装支架，以及母线、功能单元等零部件，组装成一台完整的装置。装置内零部件尺寸，隔室尺寸实行模 数化（模数单位 e=25mm）。

The basic cabinet of device is combined assembly structure. Basic structural pieces of cabinet is zinc plated, connected and firmed into basic bracket through self tappinglocking screw or 8.8 grade square corner screw. According to the change demand of project, additionally add corresponding gate, closing board,baffle plate, installationsupport and the components of bus bar, function units, to assemble a complete set of device. Perform modulus to interior component and compartment size (Modulus unite=25mm).

内部结构  Internal structure