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　　山东 MNS 低压抽屉柜是一款融合现代电气技术与精密制造工艺的低压配电装置，专为工业与民用供配电系统设计。该设备以冷轧钢板为基材，经高精度折弯成型，通过标准化连接件组装而成，模块化设计使其可依据不同配电需求，灵活配置柜体结构、功能单元与防护组件，构建完整可靠的电力分配与控制体系。

　　Shandong MNS low-voltage drawer cabinet is a low-voltage distribution device that integrates modern electrical technology and precision manufacturing processes, designed specifically for industrial and civilian power supply and distribution systems. This equipment is made of high-quality cold-rolled steel plates as the base material, which are formed by high-precision bending and assembled through standardized connectors. The modular design allows for flexible configuration of cabinet structure, functional units, and protective components according to different power distribution needs, building a complete and reliable power distribution and control system.

　　一、多元场景下的深度应用

　　1、 Deep application in diverse scenarios

　　山东 MNS 低压抽屉柜凭借性能，在多个领域发挥关键作用。在电力行业，作为变电站低压侧的核心配电设备，它能精准分配电能，保障电力稳定输出；建筑领域中，无论是商业综合体的大型配电间，还是高层住宅的电气竖井，该设备都能为照明、空调、电梯等系统提供可靠的电力供应；钢铁、水泥等重工业场景下，面对高负荷、强冲击的用电环境，其稳定的电气性能可确保生产线设备持续运行；在石化行业，防爆型 MNS 低压抽屉柜满足特殊区域的用电需求，助力油气开采、化工生产等环节的电力控制；此外，数据中心、医院等对供电可靠性要求极高的场所，也广泛采用该设备构建冗余配电系统，为关键设备提供不间断电力保障。

　　Shandong MNS low-voltage drawer cabinets play a key role in multiple fields with excellent performance. In the power industry, as the core distribution equipment on the low-voltage side of substations, it can accurately distribute electrical energy and ensure stable power output; In the field of architecture, whether it is a large distribution room in a commercial complex or an electrical shaft in a high-rise residential building, this equipment can provide safe and reliable power supply for lighting, air conditioning, elevators, and other systems; In heavy industrial scenarios such as steel and cement, facing high load and strong impact electrical environments, their stable electrical performance can ensure the continuous operation of production line equipment; In the petrochemical industry, explosion-proof MNS low-voltage drawer cabinets meet the safety electricity needs of special areas and assist in power control for oil and gas extraction, chemical production, and other processes; In addition, data centers, hospitals, and other places with extremely high requirements for power supply reliability also widely use this equipment to build redundant distribution systems, providing uninterrupted power guarantee for key equipment.

　　二、精密科学的结构与工作原理

　　2、 The structure and working principle of precision science

　　山东 MNS 低压抽屉柜采用模块化设计理念，以 25mm 为基本模数（单位 E），柜体框架由高强度冷轧钢板经数控设备加工而成，各部件通过自攻锁紧螺钉或六角螺钉稳固连接。柜体内部划分功能单元室、母线室、电缆室等独立隔室，有效避免不同功能区域间的电磁干扰与故障蔓延。

　　The Shandong MNS low-voltage drawer cabinet adopts a modular design concept, with a basic module of 25mm (unit E). The cabinet frame is made of high-strength cold-rolled steel plate processed by CNC equipment, and each component is firmly connected by self tapping locking screws or hexagonal screws. The cabinet is divided into independent compartments such as functional unit rooms, busbar rooms, and cable rooms, effectively avoiding electromagnetic interference and fault propagation between different functional areas.

　　功能单元是抽屉柜的核心组件，涵盖断路器、接触器、继电器等电气元件，按 8E/4、8E/2、6E、8E 等多种规格组合，可实现对电路的通断控制、过载保护、短路保护等功能。母线系统采用高强度绝缘材料包裹铜质母线排，具备强大的载流能力与动热稳定性，能承受短路电流的冲击；电缆室预留充裕空间，方便电缆的引入、固定与连接，确保电力传输的稳定。各隔室间通过金属隔板完全隔离，满足国际电工标准 IEC 439-1 中 “形式 4” 的防护要求，有效提升设备运行性。

　　The functional unit is the core component of the drawer cabinet, covering electrical components such as circuit breakers, contactors, relays, etc. It can be combined in various specifications such as 8E/4, 8E/2, 6E, and 8E to achieve functions such as on/off control, overload protection, and short circuit protection for circuits. The busbar system adopts high-strength insulation material to wrap the copper busbar, which has strong current carrying capacity and dynamic thermal stability, and can withstand the impact of short-circuit current; Adequate space is reserved in the cable room to facilitate the introduction, fixation, and connection of cables, ensuring efficient and stable power transmission. Each compartment is completely isolated by metal partitions, meeting the protection requirements of "Form 4" in the international electrical standard IEC 439-1, effectively improving the safety of equipment operation.

　　叁、突出的技术优势与性能特点

　　3、 Outstanding technological advantages and performance characteristics

　　的电气性能：山东 MNS 低压抽屉柜的额定载流量、分断能力与动热稳定性等关键指标均处于行业水平。其框架结构经优化设计，能承载高达 6300A 的额定电流，短路分断能力可达 150kA，有效保障在复杂用电环境下的可靠运行，降低设备故障风险。

　　Excellent electrical performance: The rated current carrying capacity, breaking capacity, and dynamic thermal stability of Shandong MNS low-voltage drawer cabinets are all at the leading level in the industry. Its framework structure has been optimized and designed to carry a rated current of up to 6300A, with a short-circuit breaking capacity of up to 150kA, effectively ensuring reliable operation in complex electrical environments and reducing equipment failure risks.

　　可靠的防护体系：设备具备多种防护等级，如 IP31 可防护直径大于 2.5mm 的物体侵入，阻挡灰尘与小型外物；IP40 能防止大于 1.0mm 的固体异物进入；IP54 则进一步增强防尘防水能力，可抵御飞溅的水侵入，适用于不同环境需求，为内部电气元件提供良好的运行环境 。

　　Reliable protection system: The equipment has multiple protection levels, such as IP31, which can protect objects with a diameter greater than 2.5mm from entering, block dust and small foreign objects; IP40 can prevent solid foreign objects larger than 1.0mm from entering; IP54 further enhances dust and water resistance, can resist splashing water intrusion, and is suitable for different environmental requirements, providing a good operating environment for internal electrical components.

　　智能的联锁机制：防误操作联锁系统由断路器操作手柄机构与抽屉位置机械联锁共同构成，采用双重保险设计。当抽屉处于工作位置时，断路器操作手柄锁定，防止误分合；抽屉未完全推入或抽出时，断路器无法合闸，有效避免因误操作引发的事故。此外，还可实现柜间联锁，依据系统运行方式灵活配置，增强整个配电系统的性与可靠性。

　　Intelligent interlocking mechanism: The anti misoperation interlocking system consists of a circuit breaker operating handle mechanism and a drawer position mechanical interlock, adopting a dual safety design. When the drawer is in the working position, the circuit breaker operating handle is locked to prevent accidental opening and closing; When the drawer is not fully pushed in or pulled out, the circuit breaker cannot be closed, effectively avoiding safety accidents caused by misoperation. In addition, interlocking between cabinets can be achieved, which can be flexibly configured according to the system operation mode, enhancing the safety and reliability of the entire distribution system.

　　灵活的配置方案：以 8E 为基础单元的模块化设计，使功能单元组合丰富多样。一台 MCC 柜多可容纳 36 个功能单元，支持 PC（动力中心）与 MCC（电动机控制中心）混装，可根据实际用电需求灵活调整方案，减少柜体数量，优化配电室空间布局，同时降低设备采购与安装成本 。

　　Flexible configuration scheme: Modular design based on 8E as the basic unit, making the combination of functional units rich and diverse. One MCC cabinet can accommodate up to 36 functional units, supporting the mixing of PC (power center) and MCC (motor control center). The plan can be flexibly adjusted according to actual power demand, reducing the number of cabinets, optimizing the spatial layout of the distribution room, and reducing equipment procurement and installation costs.

　　山东 MNS 低压抽屉柜凭借的技术、可靠的性能与灵活的配置，成为现代供配电系统中不可或缺的关键设备，为各行业的电力与运行提供了坚实保障，推动着低压配电领域的技术进步与应用革新。

　　Shandong MNS low-voltage drawer cabinets, with advanced technology, reliable performance, and flexible configuration, have become an indispensable key equipment in modern power supply and distribution systems, providing solid guarantees for power safety and efficient operation in various industries, and promoting technological progress and application innovation in the field of low-voltage distribution.