LW24 Dead Tank SF6 Circuit Breaker
2.Rated frequency:50Hz
3.Rated Normal Current:3150A,4000A
4.Self-optimized gas blast pressure matching fault current characteristics
5.Arc energy utilization minimizing operating mechanism workload
6.Modular three-chamber design with independent pole operation
7.Maintenance-optimized CT20 spring drive system
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
1.LW24 Dead Tank SF6 Circuit Breaker: Reliable Power Grid Protection
Looking for a high-performance circuit breaker that combines cutting-edge technology with unmatched durability? The LW24 Dead Tank SF6 Circuit Breaker is engineered to safeguard power grids, industrial plants, and renewable energy systems against electrical faults. With its advanced SF6 gas insulation and modular design, this breaker delivers superior arc-quenching performance, operational reliability, and compliance with global standards like IEC and ANSI. Whether you’re upgrading aging infrastructure or deploying new substations, the LW24 ensures minimal downtime, reduced lifecycle costs, and seamless integration into diverse environments.
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2.Technical Specifications
- Rated Voltage: 40.5kV, 72.5kV, 126kV, 145kV, 252kV
- Rated Current: 3150A, 4000A
- Breaking Capacity: Up to 63kA
- Operating Temperature: -30°C to +40°C
- Design: Modular three-chamber structure with independent pole operation
- Drive System: Maintenance-optimized CT20 spring mechanism
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Item Unit LW24-40.5 LW24-72.5 LW24-125/145 LW24-252/T 1 Rated voltage kV 40.5 72.5 126 145 252 2 Rated normal current A 3150 4000 3 Rated frequency Hz 50 4 Rated short circuit breaking current kA 40 40 40 31.5 50 5 Rated short-time withstand current and duration kA 40 (4s) 40 (4s) 40 (3s) 31.5（3s） 50 (3s) 6 Rated peak withstand current kA 100 100 100 80 125 7 Rated making current (peak) kA 100 100 100 80 125 8 Rated short-time power frequency withstand voltage between breaks kV 95+23.4 160+42 315 460+145 to earth kV 95 160 275 460 9 Rated lightning impulse withstand voltage between breaks kV 185+33 350+59 650+100 1050+200 to earth kV 185 350 650 1050 10 Creepage distance mm/kV 31 31 25, 31 11 Breaking time ms ≤60 ≤60 ≤60 12 Opening time ms ≤30 ≤30 ≤30 13 Closing time ms ≤100 ≤100 ≤150 14 Mechanical endurance Times 10000 ≥5000 15 Rated operation sequence O-0.3s-CO-180s-CO or CO-15s-CO 16 Rated pressure of SF6 gas (at 20℃) MPa 0.50, 0.40 0.50 0.60 17 Alarm/lock pressure of SF6 gas MPa 0.45/0.40 0.35/0.30 0.45/0.40 0.55/0.50 18 Rated voltage of control circuit V DC220/110 19 Rated voltage of energy-store motor circuit V DC220/110, AC220 20 Breaking number of rated short-circuit breaking current times 20 21 Rated back-to-back capacitor back breaking current A 1500 2000 --- --- 22 Rated shunt reactor switching current A 1600 1500 --- ---
3.Key Features & Benefits
1. Self-Optimized Gas Blast Technology
The LW24 uses arc energy to generate gas pressure, reducing the need for external operating power. This innovation ensures efficient short-circuit interruption while lowering energy consumption.
2. Modular, Maintenance-Friendly Design
Three independent interrupters allow for easy servicing without dismantling the entire unit. The CT20 spring mechanism requires minimal upkeep, cutting maintenance costs by up to 40%.
3. Robust Performance in Extreme Conditions
Built to withstand harsh environments—from desert heat to Arctic cold—the LW24’s corrosion-resistant enclosure and advanced gas-sealing technology prevent leaks and ensure longevity.
4. Eco-Efficient Operation
Optimized SF6 gas usage and low leakage rates align with global sustainability goals, making it ideal for regions prioritizing environmental compliance.
4.Where It Works Best？
- Power Utilities: Upgrade aging grids with breakers rated for 72.5kV–252kV, designed for 25+ years of service.
- Industrial Facilities: Ruggedized variants resist dust, humidity, and chemical exposure in mining or oil/gas sites.
- Renewable Energy: Compact models like the LW24-Solar integrate smoothly with solar/wind farms, offering fast reclosing for grid stability.
Be used in a wide range of industries.
Industrial Plants
Eliminate power factor penalties in CNC machines and assembly lines while handling surge currents up to 100x rated capacity.
Substation
Stabilizes substation voltage against harmonics and intermittent generation from renewable inverters.
Commercial Buildings
Retrofit aging systems in hospitals or malls with silent (<45dB), flame-retardant capacitors that meet NFPA 70 fire codes.
5.How It Works？
The LW24 Dead Tank SF6 Circuit Breaker operates on a gas-blast pressure principle. During a fault, arc energy heats SF6 gas, creating high-pressure zones that extinguish the arc rapidly. Its spring-driven mechanism ensures quick, reliable tripping, while the modular design allows individual pole maintenance without shutting down the entire system.
6.Built to Last: Manufacturing & Quality
Every LW24 unit undergoes rigorous testing under ISO 9001, ISO 14001, and ISO 45001 standards. Core components like interrupters and operating mechanisms are produced in-house, ensuring precision and consistency. Third-party certifications (KEMA, ANSI) validate performance in critical applications like capacitor bank switching.
7.Why Choose Us?
- 50+ Years of Expertise: Backed by R&D from national 863 projects and Mitsubishi-inspired technology.
- Global Compliance: Certifications include IEC 62271, IEEE C37.04.
- End-to-End Support: 24/7 technical assistance, rapid spare parts delivery, and on-site installation guidance.
- Cost Efficiency: Vertical integration cuts production costs, offering competitive pricing without compromising quality.
8.FAQs
1. What safety standards does the LW24 meet?
It complies with IEC 62271, IEEE C37.04, GB (China).
2. How often does it require maintenance?
The CT20 spring mechanism needs inspection every 10 years under normal conditions.
3. Can it handle high-altitude installations?
Yes, customized models are available for elevations up to 3000 meters.
4. Is SF6 gas monitoring needed?
Built-in pressure sensors alert you to gas leaks, ensuring compliance and safety.
5. What’s the lifespan?
Designed for 25+ years with proper maintenance, thanks to corrosion-resistant materials.
9.Contact Us
Need a Reliable Circuit Breaker Solution?
Contact our team at xaxd_electric@163.com for tailored configurations, quotes, or technical details. Let’s power your projects with the precision of the LW24 Dead Tank SF6 Circuit Breaker!
10.Factory Show
11.Equipment Display
12.Application Cases
State Grid systems, power engineering, steel and metallurgy, petrochemicals, rail transportation, energy and water conservancy, construction, environmental protection, and renewable energy sectors
13.Team and Exhibition
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