LW36-110 (126) High-Voltage SF6 Circuit Breaker

Overview

The LW36-110 (126) High-Voltage SF6 Circuit Breaker is engineered for AC 50Hz, 110kV (126kV) power systems. It serves as a primary control and protection device or a tie circuit breaker, offering high reliability and adaptability in complex electrical networks.

LW36-110 (126) High-Voltage SF6 Circuit Breaker

2. Key Features & Benefits

Feature	Benefit
High Breaking Capacity	Safely interrupts fault currents up to 40kA
Low Operating Power	Easy and efficient operation with CT-30 spring mechanism
Reliable & Durable	Mechanical life ≥ 3000 operations
Minimal Maintenance	Reduces operational downtime and cost
Adaptable Design	Suitable for extreme environments and complex power systems

3. Product Structure & Working Principle

Three-Phase Porcelain Post Design: Single spring mechanism interlocks all three phases.
SF6 Gas Insulation & Arc Quenching:

High currents: hot gas flows into the expansion chamber to extinguish the arc.
Low currents: compressed gas from the pressure chamber quenches the arc.

Safety Monitoring: Pointer-type density relay tracks SF6 pressure in real time.

4. Technical Specifications

Environmental Conditions

Condition	Requirement
Ambient Temperature	-25°C to +40°C (customizable to -40°C)
Altitude	≤2500m (can adapt to 2000m)
Wind Speed	≤34 m/s
Daily Temperature Variation	≤25°C
Solar Radiation	≤1000 W/m²
Seismic Resistance	Earthquake level 8 (horizontal 0.2g, vertical 0.1g)
Ice Thickness	≤10mm
Pollution Level	≤ Class III (GB/T 5582)
Monthly Average Relative Humidity	≤90%

Electrical & Mechanical Parameters

Parameter	Value
Rated Voltage	110kV (126kV)
Rated Current	3150A
Short-Circuit Breaking Current	40kA
Short-Circuit Duration	3 seconds
Mechanical Life	≥3000 operations
Protection Level	IP54
Operating Mechanism	CT-30 Spring Mechanism