CATAGÓIRÍ
TÁIRGÍ RÁTHAÍOCHTA
220kV SF6 Gas Circuit Breaker | High Voltage Grid Switching & Protection Equipment
1. Product Overview 产品概述
The 220kV SF6 Gas Circuit Breaker is a key switching and protection equipment in 220kV high-voltage power systems. It uses SF6 gas with excellent arc-extinguishing and insulation properties as the interrupting medium. It can reliably connect, carry and break normal load current, and quickly break short-circuit current, overload current and other fault currents to protect transformers, lines and other power equipment.
The product adopts a sealed structure with high gas tightness, stable performance, long service life, and can be used outdoors or indoors. It is widely used in 220kV substations, high-voltage transmission lines, power plants, booster stations and industrial power systems.
220kV 六氟化硫断路器是 220kV 高压电力系统中的关键开关与保护设备。它采用具备优异灭弧与绝缘性能的 SF6 气体作为灭弧介质，能够可靠地接通、承载和分断正常负荷电流，并能快速切断短路电流、过载电流等故障电流，从而保护变压器、线路等电力设备安全。
产品采用密封结构设计，气体密封性高、性能稳定、使用寿命长，可户外或户内安装使用，广泛应用于 220kV 变电站、高压输电线路、发电厂、升压站及工业电力系统。
2. Core Features 核心特点
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Excellent Arc-Extinguishing Performance 灭弧性能优异
Adopting SF6 gas as arc-extinguishing medium, with strong arc extinguishing ability, fast breaking speed, large breaking capacity, can safely break short-circuit current.
采用 SF6 气体作为灭弧介质，灭弧能力强、分断速度快、开断容量大，可安全切断短路电流。
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High Insulation Level 绝缘水平高
SF6 gas has excellent insulation performance, which can ensure reliable insulation between phases and to ground under 220kV high voltage, with high safety.
SF6 气体绝缘性能极佳，可保证 220kV 高压下相间及对地绝缘可靠，安全系数高。
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Strong Breaking Capacity 开断能力强
Large rated short-circuit breaking current, can quickly and reliably remove system faults, ensure the stability of the power grid.
额定短路开断电流大，能快速、可靠地切除系统故障，保障电网稳定。
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High Reliability & Long Life 可靠性高、寿命长
High mechanical life and electrical life, stable operation, low failure rate, long maintenance-free period.
机械寿命与电气寿命高，运行稳定，故障率低，免维护周期长。
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Good Sealing Performance 密封性能好
Adopting fully sealed structure and high-quality seals, the gas leakage rate is extremely low, safe and environmentally friendly.
采用全密封结构与优质密封件，气体泄漏率极低，安全环保。
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Strong Environmental Adaptability 环境适应性强
Suitable for outdoor use, wide temperature range, anti-pollution, anti-moisture, anti-corrosion, adaptable to various harsh environments.
适合户外运行，适用温度范围宽，防污、防潮、防腐，适应各种恶劣环境。
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Compact Structure & Easy Installation 结构紧凑、安装方便
Compact structure, lorg beag, light weight, easy installation, commissioning and maintenance.
结构紧凑，占地面积小，重量较轻，安装、调试与维护便捷。
3. Technical Parameters 技术参数
| Item 项目 | Specification 技术指标 |
|---|---|
| Rated Voltage 额定电压 | 220kV |
| Rated Frequency 额定频率 | 50Hz |
| Rated Current 额定电流 | 1250A / 1600A / 2000A / 2500A (optional) |
| Rated Short-Circuit Breaking Current 额定短路开断电流 | 40kA / 50kA / 63kA (optional) |
| Arc-Extinguishing Medium 灭弧介质 | SF6 (Sulfur Hexafluoride) |
| Mechanical Life 机械寿命 | ≥10000 times |
| Operation Mode 操作机构 | Spring operating mechanism / Hydraulic operating mechanism |
| Sealing Performance 密封性能 | SF6 leakage rate ≤ 0.5%/year |
| Ambient Temperature 环境温度 | -40℃ ~ +70℃ |
| Protection Class 防护等级 | IP54 ~ IP67 (according to model) |
| Application 适用场所 | Indoor / Outdoor substation, power plant, transmission line |
| Standard 执行标准 | IEC 62271, GB 1984 |
4. Application Scenarios 应用场景
- 220kV substations for line switching and protection
220kV 变电站，用于线路投切与保护
- 220kV high-voltage transmission lines
220kV 高压输电线路
- Power plants, generator outlets and booster stations
发电厂、发电机出口及升压站
- Large industrial and mining enterprises with 220kV power supply
使用 220kV 供电的大型工矿企业
- Urban and rural power grid reconstruction and expansion projects
城乡电网改造与扩建工程
5. After-Sales Service 售后服务
- Factory Direct Supply & Quality Assurance
工厂直供，符合 IEC/GB 标准，提供型式试验报告、出厂试验报告、合格证。
- Customization Service
可按额定电流、短路开断电流、操作机构、户外 / 户内、海拔、防污等级定制。
- Installation & Commissioning Guidance
提供安装、接线、调试、操作培训及技术支持。
- Long-term After-sales & Spare Parts
提供终身维护、快速响应维修、长期备品备件供应。
