GN19-12 12kV Indoor AC Disconnect Switch for Power Distribution and Circuit Control
The GN19-12 and 12C series are high-performance indoor high-voltage disconnect switches designed for electrical systems with a rated voltage of 12kV and three-phase AC 60Hz. These switches are essential for safely dividing and closing circuits under voltage but no-load conditions. Featuring a robust three-pole structure, the unit is built with high-strength porcelain pillar insulators, a reinforced base frame, and precision-engineered gate knives. The dual-plate copper contact knife design enhances heat dissipation and dynamic stability. Its versatile rotating shaft allows for easy connection to manual or electric operating mechanisms from either side of the chassis.
GN19-12 室内高压交流隔离开关(12kV)
产品概述
GN19-12和 12C 系列是高性能室内高压隔离开关(也称隔离开关),专为额定电压12kV、三相交流 60Hz 的电气系统而设计。这些设备对于在带电空载条件下安全地分割和闭合电路至关重要。由于其性能可靠、结构紧凑,因此广泛应用于发电厂、变电站和各种工业电气系统。
核心特性及技术优势
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先进的接触技术:接触刀由两块开槽铜板组成,增加了散热面积,降低了工作温度,提高了机械强度。
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增强的动态稳定性:双板刀片设计在运行过程中提供了卓越的动态稳定性。
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磁力锁定系统:额定电流为1000A 和 1250A的型号配备了磁力锁定板,以增强大短路电流期间的触点吸引力。
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坚固的绝缘:采用高强度瓷柱绝缘体或环氧树脂支撑绝缘体,具有可靠的介电性能。
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安装灵活:旋转轴延伸到底部框架之外,可以从两侧连接到手动或电动操作机构。
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多功能设计:可采用标准三极并联结构(GN19-12)或带壁穿式瓷壳绝缘子(GN19-12C)。
技术规格
| 物品 | 单元 | 数据 |
| 额定电压 | 千伏 | 12 |
| 额定频率 | 赫兹 | 60 |
| 当前期权评级 | 一个 | 400、630、1000、1250 |
| 短时耐受电流(4秒) | kA | 12.5 – 31.5 |
| 额定峰值耐受电流 | kA | 31.5 – 80 |
| 机械寿命 | 时代 | 2000 |
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