Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FKW18-12 Overhead Load Break Switch: 12kV 630A outdoor LBS, compressed gas arc extinguishing, 10000 mechanical cycles, high fracture insulation, 1000m altitude, -30°C to +40°C, simple structure.
Advanced FKW18-12 Overhead Load Break Switch Series: Premium outdoor load break switch designed for rated voltage 12kV (up to 40.5kV), rated frequency 50Hz outdoor three-phase AC power distribution systems, comprising disconnect blade, arc extinguishing chamber and operating mechanism, adopting compressed gas production and arc extinguishing principle with simple structure, low maintenance, strong arc extinguishing ability, high fracture insulation level and high reliability reaching foreign product standards, delivering 630A rated current, 630A active load breaking, 630A closed loop breaking, 1600kVA no-load transformer breaking, 100A capacitor bank breaking, 20kA/4s short-time withstand, 50kA peak withstand, 10000 mechanical life cycles.
Outdoor Distribution and Long Life Ready: FKW18-12 incorporates vacuum interrupter with 5±1mm contact clearance, 1.1±0.2m/s opening speed, <5ms three-phase opening asynchronism, <2ms closing asynchronism, ≤200Nm manual operating torque, operating at -30°C to +40°C, altitudes ≤1000m, 95% daily humidity, providing reliable overhead load break switching solution with compressed gas arc extinguishing for outdoor distribution systems.
| FKW18-12 Overhead Load Break Switch Specifications | FKW18-12 | FKW18-24 | FKW18-40.5 | Unit |
|---|---|---|---|---|
| Model Number | FKW18-12 | FKW18-24 | FKW18-40.5 | – |
| Brand | Bepto Insulation Systems | Bepto Insulation Systems | Bepto Insulation Systems | – |
| Product Type | Outdoor Overhead Load Break Switch (LBS) with Compressed Gas Arc Extinguishing | Outdoor Overhead Load Break Switch (LBS) with Compressed Gas Arc Extinguishing | Outdoor Overhead Load Break Switch (LBS) with Compressed Gas Arc Extinguishing | – |
| Core Technology | Compressed Gas Production and Arc Extinguishing Principle | Compressed Gas Production and Arc Extinguishing Principle | Compressed Gas Production and Arc Extinguishing Principle | – |
| Components | Disconnect Blade + Arc Extinguishing Chamber + Operating Mechanism | Disconnect Blade + Arc Extinguishing Chamber + Operating Mechanism | Disconnect Blade + Arc Extinguishing Chamber + Operating Mechanism | – |
| Rated Voltage | 12 | 24 | 40.5 | kV |
| Rated Frequency | 50 | 50 | 50 | Hz |
| System Type | Outdoor Three-Phase AC Power Distribution System | Outdoor Three-Phase AC Power Distribution System | Outdoor Three-Phase AC Power Distribution System | – |
| Rated Current | 630 | 630 | 630 | A |
| Rated Active Load Breaking Current | 630 | 630 | 630 | A |
| Rated Closed Loop Breaking Current | 630 | 630 | 630 | A |
| 5% Rated Active Load Breaking Current | 31.5 | 31.5 | 31.5 | A |
| Rated Cable Charging Breaking Current | 10 | 10 | 10 | A |
| Rated Breaking Capacity of No-Load Transformer | 1600 | 1600 | 1600 | kVA |
| Rated Breaking Capacitor Bank Current | 100 | 100 | 100 | A |
| 1min Power Frequency Withstand Voltage (Vacuum Fracture) | 42 | 50 | 70 | kV |
| 1min Power Frequency Withstand Voltage (Phase-to-Phase/Earth, Disconnecting Fracture) | 48 | 60 | 80 | kV |
| Lightning Impulse Withstand Voltage (Phase-to-Phase/Earth) | 75 | 125 | 185 | kV |
| Lightning Impulse Withstand Voltage (Disconnecting Fracture) | 85 | 145 | 215 | kV |
| Rated Short-Time Withstand Current (Thermal Stability) | 20 | 20 | 25 | kA |
| Rated Short-Circuit Duration | 4 | 4 | 4 | s |
| Rated Peak Withstand Current (Dynamic Stability) | 50 | 50 | 50 | kA |
| Rated Short-Circuit Closing Current | 50 | 50 | 50 | kA |
| Mechanical Life | 10000 | 10000 | 10000 | cycles |
| Vacuum Interrupter Contact Erosion Limit | 0.5 | 0.5 | 0.5 | mm |
| Manual Operating Torque | ≤200 | ≤200 | ≤200 | Nm |
| Clearance Between Open Contacts | 5±1 | 5±1 | 5±1 | mm |
| Average Opening Speed | 1.1±0.2 | 1.1±0.2 | 1.1±0.2 | m/s |
| Three-Phase Opening Asynchronism | <5 | <5 | <5 | ms |
| Three-Phase Closing Asynchronism | <2 | <2 | <2 | ms |
| Distance Between Charged Bodies and Phase-to-Earth | >200 | >200 | >200 | mm |
| Auxiliary Circuit Resistance | ≥400 | ≥400 | ≥400 | μΩ |
| Ambient Temperature | -30 to +40 | -30 to +40 | -30 to +40 | °C |
| Relative Humidity (Daily Average) | ≤95 | ≤95 | ≤95 | % |
| Relative Humidity (Monthly Average) | ≤90 | ≤90 | ≤90 | % |
| Altitude | ≤1000 | ≤1000 | ≤1000 | m |
| Vibration Resistance | Without Frequent Violent Vibration | Without Frequent Violent Vibration | Without Frequent Violent Vibration | – |
| Key Advantages | Simple Structure, Low Maintenance, Strong Arc Extinguishing Ability, High Fracture Insulation Level, High Reliability, 10000 Mechanical Cycles, Compressed Gas Arc Extinguishing | Simple Structure, Low Maintenance, Strong Arc Extinguishing Ability, High Fracture Insulation Level, High Reliability, 10000 Mechanical Cycles, Compressed Gas Arc Extinguishing | Simple Structure, Low Maintenance, Strong Arc Extinguishing Ability, High Fracture Insulation Level, High Reliability, 10000 Mechanical Cycles, Compressed Gas Arc Extinguishing | – |
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.
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.
