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LW9-72.5/3150 66kV-72.5kV Poircealláin Cineál Poist SF6 Briste Cuarda, Lascthrealamh Grád Stáisiún Cumhachta

Cur síos gairid:
An Heicseafluairíd Sulfair LW9-72.5/3150 (SF6) Circuit Breaker is a power station-grade core switching device specifically designed for 66kV to 72.5kV high-voltage power systems. Adopting a porcelain post type external insulation structure and using high-purity sulfur hexafluoride (SF6) gas as the insulation and arc-extinguishing medium, it features a rated current of 3150A and strong breaking capacity. With excellent performance, compact structure and high electrical insulation reliability, it adapts perfectly to complex climatic environments from -40℃ to +40℃. Widely used in large thermal/hydropower plants, regional substations, high-voltage transmission lines and main distribution stations of large industrial and mining enterprises, it provides crucial guarantee for the safe, stable and efficient operation of high-voltage power systems.

aon、产品描述(Product Description)

LW9-72.5/3150 六氟化硫断路器,定位于66kV-72.5kV 高压电力系统的 “电站级” 守护者,核心优势在于瓷柱式结构的高稳定性、SF6 介质的优异灭弧性能以及超大电流承载能力。
核心技术与结构

glacadh táirge瓷柱式户外紧凑型结构,由独立的 SF6 绝缘瓷套支柱、灭弧室、导电回路及操动机构组成。瓷套选用高强度优质电瓷材料,经严格工艺烧制,具备极高的机械强度与抗污闪能力,确保在高海拔、多污秽、强紫外线等恶劣户外环境下仍保持卓越的绝缘性能。灭弧室采用先进的自能式或压气式灭弧原理设计,利用 SF6 气体优异的电负性和灭弧特性,开断能力强,电气性能稳定,其绝缘强度是空气的 2-3 倍,可确保在 3150A 大额定电流下长期稳定运行。

环境适应性与防护

设备为全户外、电站型设计,防护等级达到IP65以上,可有效抵御风沙、雨雪、spraeála salann、紫外线照射等自然侵蚀。温度适应范围极宽,可达 **-40℃至 + 40℃**,并可根据需求配置防凝露加热装置,满足全国绝大多数地区,特别是高寒、高湿度及沿海多风地区的电站使用标准。

操作与维护

配备高性能Meicníocht oibriúcháin earraigh,动作平稳、分合闸速度快、机械寿命长(通常≥3000 次),支持电动操作与手动储能,适配频繁操作工况。SF6 气体作为绝缘介质,化学性质稳定,全密封结构确保了长期运行的cothabháil saor in aiscetréith,仅需定期进行 SF6 气体密度监测,极大降低了电站的后期运维成本与工作量。

Cásanna iarratais

作为电站级核心设备,它主要用于66kV-72.5kV电压等级的电力枢纽,是大型电厂发电机出口开关、区域变电站主变进线开关、高压输电线路联络开关的理想选择,确保电力系统在故障状态下的快速隔离与安全切断。

The LW9-72.5/3150 SF6 Circuit Breaker is positioned as the “Power Station-Grade” Guardian for 66kV-72.5kV high-voltage power systems. Its core advantages lie in the high stability of the porcelain post structure, the excellent arc-extinguishing performance of SF6 medium, and the large current carrying capacity.
Core Technology & Structure

The product adopts an outdoor compact porcelain post type structure, consisting of independent SF6 insulated porcelain posts, arc chambers, conductive circuits and operating mechanisms. The porcelain posts are made of high-strength high-quality electrical porcelain materials, fired through strict processes. They possess extremely high mechanical strength and anti-flashover capability, ensuring excellent insulation performance even in severe outdoor environments such as high altitude, high pollution and strong UV radiation. The arc chamber adopts an advanced self-energy type or pneumatic type arc-extinguishing principle. Utilizing the excellent electronegativity and arc-extinguishing characteristics of SF6 gas, it offers strong breaking capacity and stable electrical performance. Its insulation strength is 2-3 times that of air, ensuring long-term stable operation at a large rated current of 3150A.

Inoiriúnaitheacht Timpeallachta & Cosaint

Designed as a fully outdoor, power station-grade device, it achieves a protection level of IP65 and above, effectively resisting natural erosion such as sand, báisteach, salt fog and UV radiation. It features an extremely wide temperature adaptation range of -40℃ to +40℃, and can be configured with anti-condensation heating devices as required, meeting the power station operation standards of most regions in China, especially cold, high-humidity and coastal areas with strong winds.

Operation & Maintenance

Equipped with a high-performance meicníocht oibriúcháin earraigh, it operates smoothly, has fast switching speed and long mechanical life (usually ≥3000 operations). Supporting electric operation and manual energy storage, it meets the demands of frequent operation. As an insulating medium, SF6 gas has stable chemical properties. The fully sealed structure ensures truly saor ó chothabháil during long-term operation, requiring only regular SF6 gas density monitoring, which greatly reduces the long-term operation and maintenance costs and workload of the power station.

Cásanna Iarratais

As a core power station-grade device, it is mainly used in 66kV-72.5kV power hubs. It is an ideal choice for generator outlet switches of large power plants, main transformer incoming line switches of regional substations, and connection switches of high-voltage transmission lines, ensuring rapid isolation and safe isolation of the power system in case of faults.

dhá、产品参数表(Product Parameters Table)

Míreanna paraiméadar Paraiméadair shonracha
Múnla táirge LW9-72.5/3150
产品类型 户外瓷柱式、六氟化硫断路器、电站型
Voltas rátáilte 72.5kV (适配 66kV 系统)
Minicíocht rátáilte 50Hz (60Hz 可选)
Reatha rátáilte 3150A (大电流承载)
Sruth briste gearrchiorcaid rátáilte 31.5kA / 40kA (Roghnach)
额定短路关合电流 80kA / 100kA (对应开断电流)
mheán inslithe Heicseafluairíd sulfair (SF6) 气体
meán múchta stua Heicseafluairíd sulfair (SF6) 气体
操作机构 高压弹簧操动机构 (电动 / Lámhleabhar)
额定操作电压 DC 220V (标准,可定制 DC 110V/AC 110V)
SF6 气体充装压力 0.45MPa ~ 0.6MPa (20℃,可定制)
Saol meicniúil ≥3000 次
Leibhéal cosanta IP65 (户外电站型,防盐雾)
环境温度范围 -40℃ ~ +40℃
Airde is infheidhme ≤1000m (高海拔可定制,≤3000m)
Caighdeáin forfheidhmithe GB/T 1984、GB/T 4089.1、IEC 62271-100
外形尺寸 约 3500×1200×2800mm (以实物为准)
meáchan iomlán 约 1800kg ~ 2500kg (随配置变化)
Míreanna Paraiméadar Paraiméadair Sonracha
Múnla Táirge LW9-72.5/3150
Product Type Outdoor Porcelain Post Type, SF6 Scoradán Cuarda, Power Station Grade
Voltas Rátáilte 72.5kV (For 66kV System)
Minicíocht Rátáilte 50Hz (60Hz Optional)
Reatha Rátáilte 3150A (High Current Carrying)
Reatha Briseadh Gearrchiorcaid Rátáilte 31.5kA / 40kA (Roghnach)
Rated Short-Circuit Making Current 80kA / 100kA (Corresponding to Breaking Current)
Insulating Medium Sulfur Hexafluoride (SF6) Gas
Arc-Múchadh Meán Sulfur Hexafluoride (SF6) Gas
Meicníocht Oibriúcháin High-Voltage Spring Operating Mechanism (Electric/Manual)
Rated Operating Voltage DC 220V (Standard, DC 110V/AC 110V Customizable)
SF6 Gas Filling Pressure 0.45MPa ~ 0.6MPa (20℃, Incheaptha)
Saol Meicniúla ≥3000 Operations
Leibhéal Cosanta IP65 (Outdoor Power Station Type, Anti-Salt Fog)
Ambient Temperature Range -40℃ ~ +40℃
Airde is Infheidhme ≤1000m (High Altitude Customizable, ≤3000m)
Caighdeáin Forghníomhaithe GB/T 1984, GB/T 4089.1, IEC 62271-100
Overall Dimensions Approx. 3500×1200×2800mm (Subject to Actual Product)
Meáchan Iomlán Approx. 1800kg ~ 2500kg (Varies with Configuration)
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