SF6 gas-insulated circuit breaker LW35B

voltageautomaticfor substations

Product name
LW35B-72.5/126 ceramic-column circuit breaker

Category
High-voltage equipment - circuit breaker

Product description
The LW35B-72.5/126 circuit breaker is used to make and break rated current, interrupt fault currents and transfer lines in power transmission and transformation systems to provide control and protection. It supports three-pole opening and closing as well as rapid automatic reclosing. The device employs a self-energizing arc extinguishing principle, requires low operating power, and meets operational requirements up to 2000 m altitude. It is suitable for cold-region environments. The annual gas leakage rate is 0.3%. Seismic resistance meets intensity IX. Mechanical life is 10,000 operations. Capacitive current breaking capability meets C2 class and is suitable for switching capacitor banks.

Features / Applications

• Designed for control and protection in power transmission and transformation systems: making/breaking rated currents, interrupting fault currents and performing line transfers.
• Three-pole opening/closing and rapid automatic reclosing operations.
• Self-energizing arc extinguishing principle with low operating power requirement.
• Altitude: suitable for operation up to 2000 m.
• Operating environment: suitable for cold-region service.
• Annual gas leakage rate: 0.3%.
• Seismic capability: suitable for seismic intensity IX.
• Mechanical life: 10,000 operations.
• Capacitive current breaking capability: meets C2 class, suitable for capacitor bank switching.