Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
LW8/LW8A/LW8Y-40.5 Outdoor SF6 Circuit Breaker: 40.5kV porcelain column, CT14 spring mechanism, self-energy arc extinguishing, 6-12 current transformers, long electrical/mechanical life, transmission distribution, IP5XW, -40°C to +50°C.
Advanced LW8/LW8A/LW8Y-40.5 Outdoor SF6 Circuit Breaker Series: Three-phase AC 50Hz outdoor high-voltage electrical equipment suitable for 40.5kV power transmission and distribution systems control and protection, can be used as contact circuit breaker and switching electrical sets, uses sulfur hexafluoride gas as insulating and arc-extinguishing medium, single-post single-break structure for each pole adopting self-energy arc extinguishing principle, equipped with CT14 spring operating mechanism and three-phase mechanical linkage, complies with GB1984 and IEC62271-100 standards, excellent breaking performance with compressed air silencing chamber, long electrical life without need to replace SF6 gas, high mechanical reliability with long mechanical life enabling frequent operation.
Current Transformer and Reliability Features: LW8/LW8A-40.5 equipped with current transformers for measurement and protection, each unit can be equipped with 6-12 current transformers for user choice, uses new MKZ type SF6 pointer density gauge with pressure gauge reading not affected by temperature changes for easy use, IP5XW protection level, operates reliably in relative humidity up to 95% daily average, wind speed up to 34m/s, earthquake resistance horizontal acceleration 0.250g/vertical 0.125g, pollution level III (25mm/kV), ice thickness 10mm, providing reliable SF6 circuit breaking solution for 40.5kV transmission distribution systems.
| LW8/LW8A-40.5 Outdoor SF6 Circuit Breaker Specifications | Parameter | Unit |
|---|---|---|
| Brand | Bepto Insulation Systems | – |
| Model Number | LW8-40.5 / LW8A-40.5/LW8Y-40.5 | – |
| Product Type | Outdoor Porcelain Column High Voltage Sulfur Hexafluoride (SF6) Circuit Breaker with CT14 Spring Mechanism for Transmission and Distribution Systems | – |
| Core Technology | Sulfur Hexafluoride (SF6) Gas Insulating and Arc-Extinguishing Medium + Single-Post Single-Break Structure + Self-Energy Arc Extinguishing Principle + CT14 Spring Operating Mechanism + Three-Phase Mechanical Linkage + Compressed Air Silencing Chamber + Current Transformers for Measurement and Protection + MKZ Type SF6 Pointer Density Gauge + Temperature-Independent Pressure Reading | – |
| Rated Voltage | 40.5 | kV |
| Rated Frequency | 50 | Hz |
| Phases | Three-Phase | – |
| Installation Type | Outdoor | – |
| Structure Type | Porcelain Column | – |
| SF6 Gas Insulation | Yes (Sulfur Hexafluoride Gas as Insulating and Arc-Extinguishing Medium) | – |
| Single-Post Single-Break Structure | Yes (Each Pole with Single-Post Single-Break Structure) | – |
| Self-Energy Arc Extinguishing | Yes (Self-Energy Arc Extinguishing Principle) | – |
| CT14 Spring Operating Mechanism | Yes (CT14 Spring Operating Mechanism) | – |
| Three-Phase Mechanical Linkage | Yes (Three-Phase Mechanical Linkage) | – |
| Compressed Air Silencing Chamber | Yes (Compressed Air Silencing Chamber) | – |
| Current Transformers | Yes (6-12 Current Transformers for Measurement and Protection) | – |
| CT Quantity Options | 6-12 | Units |
| MKZ Type SF6 Density Gauge | Yes (New MKZ Type SF6 Pointer Density Gauge) | – |
| Temperature-Independent Reading | Yes (Pressure Gauge Reading Not Affected by Temperature Changes) | – |
| Excellent Breaking Performance | Yes (Excellent Breaking Performance) | – |
| Long Electrical Life | Yes (Long Electrical Life) | – |
| No SF6 Gas Replacement | Yes (Does Not Need to Replace Sulfur Hexafluoride Gas) | – |
| High Mechanical Reliability | Yes (High Mechanical Reliability) | – |
| Long Mechanical Life | Yes (Long Mechanical Life) | – |
| Frequent Operation Capability | Yes (Can Be Operated Frequently) | – |
| Standards Compliance | GB1984-1989, IEC56, IEC62271-100 | – |
| Control and Protection | Yes (Control and Protection Device for Power System) | – |
| Contact Circuit Breaker | Yes (Can Be Used as Contact Circuit Breaker) | – |
| Switching Electrical Sets | Yes (Can Be Used as Switching Electrical Sets) | – |
| Transmission and Distribution | Yes (Suitable for 40.5kV Power Transmission and Distribution Systems) | – |
| Sunshine | 1000 | W/m² |
| Relative Humidity – Daily Average | ≤95 | % |
| Relative Humidity – Monthly Average | ≤90 | % |
| Wind Speed | ≤34 | m/s |
| Earthquake Resistance – Horizontal Acceleration | 0.250 | g |
| Earthquake Resistance – Vertical Acceleration | 0.125 | g |
| Pollution Level | Level III (25mm/kV) | – |
| Ice Thickness | 10mm (wind speed ≤15m/s) | mm |
| Protection Level | IP5XW | – |
| Key Advantages | Porcelain Column Structure, SF6 Gas Insulation, Self-Energy Arc Extinguishing, CT14 Spring Mechanism, 6-12 Current Transformers, Long Electrical/Mechanical Life, No SF6 Replacement, High Reliability, Frequent Operation, Temperature-Independent Gauge, IP5XW Protection | – |
| Primary Applications | 40.5kV Power Transmission and Distribution Systems, Control and Protection, Contact Circuit Breaker, Switching Electrical Sets, Measurement and Protection with Current Transformers, Three-Phase AC 50Hz Systems | – |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.
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Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
