Products
Outdoor SF6 Circuit Breaker
Key Features
Dead tank type SF6 Gas Circuit-Breaker.72.5kV up to 252KV, 25kA~63kA, 1250A~4000A for Outdoor. Comply with IEC/ANSI standards
The dead tank SF6 circuit breakers are all equipped with pure spring operating mechanisms which makes structure simple and highly reliable. The mechanical endurance for the operating mechanism is over 10000 times, and it is convenient for maintenance and meets mechanism’s requirements for oil free and air free. It uses self-energy arc-extinguishing principle, and reduces operation power of the mechanism and enhance operational reliability of product.
The flanges adopt dual-seal structural design, the outer seal ring is water-proof and inner seal ring is gas - proof. Therefore, it can reduce the leakage of the product greatly and makes the product more suitable for outdoor operation.
Service environment
• Ambient temperature: -40 ℃ ~ +55 ℃.
• Daily average ambient air relative humidity ≤ 95%, on average ≤ 90%;
• Wind pressure: less than 700pa.
• Altitude: less than 3000m.
• Earthquake intensity: not more than 9 degrees.
• Air Contamination: Ⅲ grade.
Principle
1. High breaking current: Self-energy principle: The arc combustion makes SF6 gas in the thermal expansion chamber fiercely expanding to generate gas flow blowing to nozzle to the nozzle to extinguish the arc.
2. Low breaking current: Puff type principle: SF6 gas in the compression chamber is compressed to generate gas flow, blowing to the nozzle to extinguish the arc, which then extinguishes.
Field service operation and warranty issues
Naten can provide competent, well trained field service representatives to provide technical guidance and advisory assistance for the installation, overhaul, repair and maintenance of Naten® equipment, processes and systems.