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适用范围Application Range
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主要用于开断、关合电力系统的负载电流、过载电流及短路电流。适用于变电站、工矿企业及城、农网作保护和控制，是城、农网改造的理想设备。
Mainly used for breaking, closing load current and short circuit current of the power system for substations, mining enterprises and urban and rural distribution grid protection and control, it is a perfect device for urban and rural network reformation.
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产品特点Product Features
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ZW20A-12采用成熟的箱式密封结构，内部充以SF6气体，具有良好的密封性能，是一种免维护产品。其弹簧操作机构采用直动传动和多级脱扣系统，动作可靠性高；配备航空插座作二次电气连接、便于与智能化控制器相结合。
1. 操作灵活，方便：本产品为电动储能、电动分合，同时具有手动储能、手动分合；
2. 开断性能优越：开断额定短路电流达30次；
3. 操作功率小，可靠性高：全新设计的小型电动弹簧机构，机件数目和操作功都降低到最低水平；
4. 安装方式灵活：可采用柱上吊装或坐装安装方式；
5. 独特的进出线方式：采用硅橡胶套管，使接线端子之间绝缘距离充裕，外绝缘特性优良；
6. 使用安全：在箱体顶部安装有防爆装置，即使发生意外的内部故障，也不会有高温气体或飞溅物泄漏出来。
ZW20A-12 uses better box-type seal structure. Interior filled with SF6 gas, with good sealing performance, and maintenance-free, the spring operating mechanic uses direct drive transmission system and multi-stage release, it has the high operating reliability; with secondary aerial socket for the electrical connection with the intelligent controller combination.
1. Flexible operation, this product is the power storage with hand-operated and automatic electric operation;
2. Superior breaking advantage: breaking short current can reach 30 times;
3. Small operation power with the high reliability; all newly-designed small size electric spring mechanism, the operation power can be decrease at lowest level;
4. Flexible installation: it can be placed on the column or hung on the column;
5. Unique in-out way of cables: using bushing to expand the insulation space between the terminals, the unique insulation characteristics;
6. Safety utilization: installation the explosion-proof device on the top of the cabinet. The high temperature gas or spatter will not be leak, even if there is accident inside.
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