概述   Outline

MNS 低壓抽出式成套開關設備（以下簡稱為裝置）是參考MNS 系列低壓開關柜并加以綜合改進后用標準模件生產制造的產品。本裝置適用于交流 50Hz，額定工作電壓 660V 及以下的系統。作為各種發電、輸電、配電、電能轉換和電能消耗設備的控制設備，能廣泛應用于各工礦企業、大樓賓館、市政建設等低壓配電系統中。除一般陸用外，經過處理后，還可以用于海上石油鉆采平臺和核電站中。 

本裝置符合 IEC439-1，GB7251.1標準。

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.

主要特點  Main feature

1. 設計緊湊：以較小的空間能容納較多的功能單元。 

2. 結構通用性強，組裝靈活，以 25mm 為模數的 C 型型材能滿足各種結構型式、防護等級、使用環境的要求。 

3. 采用標準模塊設計：分別可組成保護、操作、轉換、控制、調節、測定、指示等標準單元。用戶可根據需要任意選用組裝，以 200 余種零件可以組 成不同方案的柜架結構和抽屜單元。 

4. 安裝性好：大量采用高強度阻燃型工程塑料組件，有效加強防護安全性能。 

5. 技術性能高：主要參數達到國內優良水平。

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.

主要技術參數  The main technical parameters

直母線額定工作電流： 單面或雙面操作的抽出式 MCC 為 800A，柜深 1000mm 單面操作的 MCC 為 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.

使用環境條件  Use environmental conditions

1. 周圍空氣溫度不高于 +40℃，不低于 -5℃，并且 24h 內其平均溫度不高于 +35℃。 

2. 大氣條件：空氣清潔，相對濕度在高溫 +40℃時不超過 50%，在較低溫度時允許有較高的相對濕度，例如 +20℃時為 90%，但應考慮到溫度變化， 有可能會偶然產生適度的凝露。 

3. 海拔高度不超過 2000m。 

4. 本裝置適應于以下溫度的運輸和儲存過程：-25℃至 +55℃的范圍之間，在短時間內（不超過 24h）可達 +70℃，在這些限溫度下裝置不應遭到任 何不可恢復的損傷，而且在正常的條件下應能正常工作。 

5. 如果上述使用條件不能滿足時，應由用戶和制造廠協商解決。 

6. 當本裝置使用于海上石油鉆采平臺和核電站時，應另簽訂技術協議。

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.

結構特點   Structural features

裝置的基本柜架為組合式裝配結構，柜架的基本結構件都經過鍍鋅處理，通過自攻鎖緊螺釘或 8.8 級方角螺絲緊固互相連接成基本柜架，再按方 案變化需要，加上相應的門、封板、隔板、安裝支架，以及母線、功能單元等零部件，組裝成一臺完整的裝置。裝置內零部件尺寸，隔室尺寸實行模 數化（模數單位 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).

內部結構  Internal structure