SF6 gas-insulated circuit breaker LW62S-252

SF6arc protectionautomatic

Product
Porcelain-insulated SF6 circuit breaker LW62S-252

Category
High-voltage equipment - Circuit breakers

Description
The LW62S-252 SF6 circuit breaker is designed to open, close and carry the normal operating current of transmission lines, and to carry, close and open specified abnormal currents such as overload and short-circuit currents within the prescribed time to provide control and protection. The breaker supports three-pole mechanical interlocked opening/closing and fast automatic reclosing. Its compact, simple structure minimizes footprint. The arc-extinguishing chamber uses a double-moving design in which moving and fixed arc contacts move relative to each other during opening/closing, reducing contact separation speed, lowering operating energy and improving reliability and stability. Annual gas leakage rate is ≤0.3%; suitable for seismic intensity 9; mechanical life is 10000 operations.

Technical specifications

• Model: LW62S-252
• Insulating medium: Sulfur hexafluoride (SF6)
• Functions: Open, close and carry normal operating current; carry, close and open specified overload and short-circuit currents within prescribed time; three-pole mechanical interlocked opening/closing; fast automatic reclosing
• Arc-extinguishing chamber: Double-moving design with relative motion of moving and fixed contacts
• Structural features: Simple, compact, small footprint
• Annual leakage rate: ≤0.3%
• Seismic resistance: Suitable for seismic intensity 9
• Mechanical life: 10000 operations