Product Type: The LW8-40.5Y outdoor high-voltage sulfur hexafluoride circuit breaker is an outdoor high-voltage electrical device for three-phase AC 50Hz power systems.
Manufacturer: Produced by Yueqing Jidian Electric Co., Ltd.
Series Classification
The product belongs to the LW8-35 series, which includes two main categories: LW8-35 tank-type circuit breakers and LW8-35A series porcelain column-type circuit breakers.
The LW8-35A series porcelain column-type circuit breakers are further divided into three subcategories: LW8-35A (parallel arrangement), LW8-35AT type, and LW8-35AG type.
It is suitable for control and protection in 40.5kV power transmission and distribution systems, and can also be used as a tie circuit breaker or in scenarios for switching capacitor banks. Additionally, it can be equipped with built-in current transformers for measurement and protection purposes.
Strong Current Withstand and Short-Circuit Breaking Capacity: It exhibits excellent current withstand capability and short-circuit current breaking performance. The rated current can reach up to 3150A, and the rated short-circuit breaking current is 40KA, making it suitable for large-capacity user requirements.
Highly Reliable Operating Mechanism
Equipped with the CT14 spring operating mechanism, which features high operational stability, a mechanical service life of over 5000 operations, and minimal maintenance requirements. To date, the company has deployed over 20,000 circuit breakers with CT14 mechanisms across the country.
For the LW8-35AG type circuit breaker equipped with the CT10-A mechanism, it offers lower operating power and a more compact, aesthetically pleasing structure.
High-Precision Current Transformer (CT) Configuration
It can be integrated with bushing-type CTs, achieving an accuracy class of up to 0.2S, a secondary load of 40VA or higher, and a protection class of 5P30 or higher.
To meet diverse user needs, the LW8-35AG type circuit breaker can be equipped with externally mounted epoxy-cast CTs.
The circuit breaker meets the requirements of the national standard GB1984-1989 AC High-Voltage Circuit Breakers and the International Electrotechnical Commission (IEC) standard IEC 60056:1987 High-Voltage AC Circuit Breakers. It is a high-tech product with advanced technology at the level of the 1990s.
Adhering to the noble philosophy of serving global users, the company continues to pioneer and innovate. It strictly controls every production process, strives for excellence in quality, and continuously improves product manufacturing techniques.
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