| 序号 | 项目 | ABBMNS | 仿制的MNS(MLS,MNSG) |
1 | 联锁机构 | 一个操作机构同时实现开关操作及抽屉机械联锁功能，操作方便、可靠。 | 用二个操作机构分别进行开关及抽屉机械联锁的操作，操作较困难，可靠性较差。 |
2 | 功能单元 规 格 | 6E，10E，14E，32E固定式单元及8E/4,8E/2,4E，8E，12E，16E，24E抽出式单元提供更灵活的单元组合，节省配电室空间。 | 仅8E，11E，16E，32E固定式单元及8E/4, 8E/2, 8E， 16E，24E抽出式单元可供选择，将增加整个项目的开关柜数量。 |
3 | 多功能板 | 专用模具整体成型，保证精度和强度；材料为PUR，不含卤素，对环境及人体没有危害；能自熄灭电弧及隔离电弧。 | 分体加工后进行组合，精度和强度较差；由于存在组合间隙不能阻隔电弧；含有卤素的材料易对人体及环境产生危害。 |
| 4 | C型骨架 | 柔性加工工艺加工，保证精度和强度。 | 传统剪、冲、弯工艺加工，精度较难控制，强度差。 |
5 | 单元后板 | 玻纤增强尼龙66材料及精良的模具保证组件的精度和强度，使插件的连接到位，可靠。 | 组件的塑料材质较软，易造成一次插件连接不到位，接插不可靠。 |
6 | 铜母线 | 导电率99%以上并使用热缩绝缘套管，具良好的导电性能和绝缘性能。 | 未经严格检测的铜排导电率一般在70-80%之间，电气性 能差。 |
7 | 绝缘材料 | 电气绝缘材料CTI600V，材料组别I，充分保证绝缘性能和机械强度。 | 未经检测，材料性能不稳定，影响绝缘性能及机械强度。 |
8 | 无功功率补偿 | 补偿柜设计已考虑谐波及操作过电压的影响，运行可靠。 | 补偿控制器易受操作过电压影响而损坏，接触器维护工作量大，运行不可靠。 |
9 | 成套配置 | 另部件及全部电气元件(包括一次及二次元件)均为ABB集团内部配套，系统设计时已考虑到电气参数间的协调及标准化，从而大大提高系统运行的可靠性。 | 开关柜的安装组件及电气元件由各公司采购组装，整体质量较难控制。 |
| No. | Items | ABB MNS | MNS Copies(MLS,MNSG) |
| 1 | Interlock mechanism | One mechanism controls both the switch operation and the module’s mechanical interlock. Easy to operate, more reliable. | Two operating mechanism manipulate the switch operation and the module’s mechanical interlock respectively. Hard to operate, less reliable. |
| 2 | Functional unit sizes | Fixed unit: 6E,10E,14E,32E; Withdrawable unit: 8E/4,8E/2,4E,8E,12E,16E,20E,24E; more flexible unit selection, saving distribution chamber’s space. | Fixed unit: 8E,11E,16E,32E; Withdrawable unit: 8E/4,8E/2,8E,16E,24E; Less units selection, easy to increase the numbers of the switchgear. |
| 3 | Multi-functon wall | Special moulds and dies to make it at one time, to ensure the accuracy and strength; material: PUR, free-halogen, harmless to environment and human beings, self-extinguishing-arc and insulating arc. | Dividing in several pieces, then assembling together, so poor accuracy and strength; Due to assembling gaps, can not insulate arc; material with halogen is harm to environment and human beings. |
| 4 | C-profile frame | Using flexible machining technologic, to ensure accuracy and strength. | Traditional shearing, punching and bending machining technologic, hard to control accuracy, and got less strength. |
| 5 | rear wall of withdrawable module unit | Material: PA66-GF, with excellent moulds and dies to ensure accuracy and strength, to make connectors connected in proper position, to be more reliable. | Less strength in plastic material, easy to make connectors connected in wrong position, less reliable. |
| 6 | Copper busbar | Electric conductivity: 99%, with heat-shrinkable tube, to ensure high conductive properties and insulation properties. | Without strict inspection and test, electric conductivity is usually between 70%-80%, with poor electric characteristic. |
| 7 | Insulation material | Electric insulation material in material group I, CTI600V, to completely ensure the insulation properties and mechanical strength. | Without inspection and test, so the material characteristic is unstable, also to influence the insulation properties and mechanical strength. |
| 8 | Reactive power compensation | To take the harmonic and operation overvoltage into consideration in cubicle design; reliable operation. | Compensation controller is easy to be destroyed by operation overvoltage. Much more maintenance work in repairing contactors, unreliable operation. |
| 9 | Assemblies configuration | Parts、pieces parts and all the electric components(including main circuits components and control circuits components) are made in ABB group. In wholly system design, already considered the coordination and standardization of among electric parameters. So to highly increase the reliability of the system operation. | Mounting parts and electric components of cubicles are purchased from various companies, so hard to control the whole quality. |
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