Sf6 Circuit Breaker Outdoor

Zhejiang Usune Electric Co., Ltd. is a professional enterprise integrating R&D, production, and sales. Its main products include 12kV～245kV indoor and outdoor high-voltage vacuum circuit breakers, SF6 circuit breakers, disconnect switches, and load switches. The company's factory is equipped with advanced production equipment, stringent testing methods, and standardized raw material control. With mature processes and a comprehensive quality management system, they ensure the stable and reliable quality of their SF6 Circuit Breaker Outdoor.

Product Overview

The LW36-40.5 series SF6 Circuit Breaker Outdoor is an outdoor three-phase high-voltage AC device, compatible with a rated voltage of 40.5kV, 50Hz AC power grid. It is suitable for environments with altitudes ≤3000m, ambient temperatures ≥-30℃, and pollution levels ≤IV. It is primarily used for control and protection of high-voltage transmission lines in power plants, substations, and industrial and mining enterprises, and can also be used as a tie circuit breaker.

Core Advantages

1. Strong Environmental Adaptability: Adaptable to high-altitude, low-temperature, and heavily polluted outdoor conditions, with stable operation.
2. Excellent Insulation and Arc-Extinguishing Performance: Uses SF6 gas as the insulation and arc-extinguishing medium, ensuring rapid and reliable fault disconnection.
3. Reliable Structure and Maintenance-Free Operation: Excellent sealing performance, low leakage rate, and minimal daily maintenance workload.
4. Safe and Controllable Operation: Can be configured with a density monitoring device to monitor gas status in real time and provide timely warnings of abnormalities.

Real-world Application Case Study

A 110kV Substation Upgrade Project in Northwest China
The project is located in Gansu Province, at an altitude of approximately 2200m, with winter low temperatures reaching -25℃. The existing 35kV switchgear was aging and required replacement with high-reliability equipment.
We provided 8 LW36-40.5 Sf6 Circuit Breaker Outdoor units. In the three years since commissioning, the equipment has operated without abnormalities in low-temperature and high-altitude environments, successfully interrupting multiple short-circuit faults, significantly improving grid stability, reducing operation and maintenance costs, and gaining high recognition from the power grid company.

Main Technical Parameters

Outer Dimensions

Project Reference

Cas-space Rocket Launch Project

Test Report

FAQ

1. Can the Sf6 Circuit Breaker Outdoor be used in high-altitude and cold regions?

Yes. The product is designed for environments with altitudes ≤3000m and minimum temperatures -30℃. Its insulation and sealing structure have been specifically optimized for stable operation.

2. What is the routine maintenance cycle for the Sf6 Circuit Breaker Outdoor?

Under normal operating conditions, maintenance is extremely low, requiring only a visual inspection and SF6 gas pressure check every 1-2 years.

3. Can it be used in industrial and mining enterprises besides substations?

Yes. The product is suitable for high-voltage power distribution systems in power plants, substations, and various industrial and mining enterprises, and can meet the control and protection needs of industrial scenarios.