252KV Dead-Tank SF6 Circuit Breaker 252KV Dead-Tank SF6 Circuit Breaker

Product Description

Ang RHD-252KV Dead-Tank SF6 Circuit Breaker, usa ka high-reliability high-voltage electrical device nga gihimo pinaagi sa 220kV ug uban pa ang power transmission ug transformation systems. Isip usa ka core product sa RHD series, adunay niya ang series' excellent industrial quality ug integrated advanced high-voltage technologies. Ang iyang primary functions naka-include sa pagdistribute sa combined load currents, pag-interrupt sa fault currents ngadto, ug pag-realize sa effective control, measurement, ug protection sa transmission lines. Pinaagi sa compact dead-tank structure nga nag-encapsulate sa key components sa metal casing nga filled sa SF6 gas, sigurado ang breaker nga stable ang operation kahit asa pa ang harsh environments, making it an ideal choice alang sa pag-upgrade sa high-voltage power grids.

Key Features

1. Superior Seismic Resistance：Adopting a low-center-of-gravity design, ang breaker makakapag-withstand og earthquake intensity nga up to 9 degrees, ensuring stable performance sa seismic-prone areas—consistent sa RHD series’ proven anti-seismic capability.
2. Excellent Arc-Extinguishing Performance & Long Service Life：Leveraging the high arc-extinguishing efficiency sa SF6 gas, ang breaker achieves a rated short-circuit breaking current nga ≥50kA. Adunay niya og electrical life nga more than 20 operations ug mechanical life nga up to 10,000 cycles, significantly reducing equipment replacement ug maintenance costs.
3. Low SF6 Gas Leakage Rate：The hermetic metal tank structure minimizes SF6 gas leakage, with an annual leakage rate nga ≤1%—far below industry averages. This design not only avoids safety hazards from gas leakage but also reduces environmental impact.
4. Modular Design & Flexible Expansion：It supports on-demand configuration of built-in current transformers (CTs), with up to 15 CTs available for measurement or protection purposes. The standardized module interface allows flexible combination to meet diverse substation design and layout requirements, especially suitable for space-constrained scenarios.
5. Strong Environmental Adaptability：The breaker operates stably in extreme conditions: ambient temperature ranging from -40℃ to +55℃, maximum daily temperature difference of 32K, altitude up to 3,000m, and air pollution level up to Class IV. It also resists wind pressure of 700Pa (equivalent to 34m/s wind speed) and icing thickness of up to 20mm.
6. Comprehensive Safety Protection：Equipped with anti-misoperation interlocking devices, it effectively prevents accidents caused by incorrect operations. Before delivery, the breaker undergoes lightning impulse tests to eliminate insulation discharge risks from production and assembly, ensuring reliable quality.
7. Maintenance-Free Operating Mechanism：It adopts a spring-operated mechanism that is oil-free, gas-free, and maintenance-free. This mechanism delivers stable performance, low noise, and high reliability, reducing long-term operational workload.
8. Compliance with International Standards：The product fully meets the requirements of GB/T 1984 and IEC 62271-100 standards, ensuring compatibility with global high-voltage power grid systems and facilitating international project applications..

Main characteristics

Electrical

Mekanikal

Mga Kaso sa Pag-aplikar

1. Dako nga Hub Substations：Ideal para sa 220kV ug uban pang mga mahitungod nga hub substations, kini nagtumong sa core nga tunggali sa pag- kontrol ug proteksyon sa primarya nga power supply circuit, siguraduhon ang stable nga transmision sa kuryente alang sa urban ug industriyal nga areas.
2. New Energy Bases：Angay para sa high-voltage grid-connection systems sa wind power ug photovoltaic bases. Ang iyang excellent nga fault-interrupting capability ug environmental adaptability mogahin sa reliable nga integration sa renewable energy sa main grid.
3. Cross-Regional Power Transmission Projects：Gisultiha sa long-distance cross-regional power transmission lines, kini effectively nag-isolate sa mga fault points aron mas sayon ang pag-prevent sa brownouts o blackouts mula'g mag-spread, naghimo og continuous ug stable nga power supply tali sa regions.