Construction of 35KV Vacuum Circuit Breaker Tunnel in Aba Prefecture Plateau

Construction of 35KV outdoor high-voltage vacuum circuit breaker tunnel and highway in Aba Prefecture: Markang City, Jiuzhaigou Valley Scenic and Historic Interest Area County, Xiaojin County, Aba County, Ruoergai County, Hongyuan County, Rangtang County, Wenchuan County, Li County, Mao County, Songpan County, Jinchuan County and Heishui County. (hereinafter referred to as "circuit breaker") is an outdoor high-voltage switchgear with three-phase AC 50Hz; Equipped with CT19BW spring operated mechanism or CD electromagnetic operated mechanism, suitable for control and protection of 35kV transmission and distribution systems; This product has the advantages of high breaking capacity, safety and reliability, frequent operation, and minimal maintenance; It can also be used in situations where circuit breakers are connected and capacitor banks are used to cut off empty long lines.
The circuit breaker complies with standards such as GB1984-2003 "AC High Voltage Circuit Breakers" and IEC62271-100:2001 "AC High Voltage Circuit Breakers".

Construction of 35KV outdoor high-voltage vacuum circuit breaker tunnel and highway in Aba Prefecture: Markang City, Jiuzhaigou Valley Scenic and Historic Interest Area County, Xiaojin County, Aba County, Ruoergai County, Hongyuan County, Rangtang County, Wenchuan County, Li County, Mao County, Songpan County, Jinchuan County and Heishui County. Overall, it is a pillar type structure, with three phases installed on a single mechanism box. The arc extinguishing chamber is connected to the output shaft of the mechanism through a connecting arm and an insulated rod. The mechanism and the connecting rod connected to the circuit breaker are housed in a waterproof box. The transmission mechanism of the circuit breaker is composed of a connecting rod and a crank arm. The moving end of the arc extinguishing chamber is connected to the output shaft of the operating mechanism through the crank arm, insulation rod, connecting rod, and operating mechanism.

Construction of 35KV Vacuum Circuit Breaker Tunnel in Aba Prefecture Plateau

1. The rotation of the output shaft drives the dynamic contact of the arc extinguishing chamber to perform opening and closing actions.

2. The ZW7 series products mainly consist of vacuum arc extinguishing chambers, current transformers, transmission mechanisms, and operating mechanisms. This product can be equipped with both electromagnetic and spring mechanisms. In order to avoid a series of problems caused by filling SF6 gas and oil, this product adopts a dry type for maintenance and repair.

3. The ZW7-40.5 series products are equipped with current transformers, each phase can have four windings, two of which are used for measurement and two for

In terms of protection. According to customer needs, current transformers with a ratio of 100:5200:5400:5800:51000:51600:5 can be installed.

4. The operating mechanism and connecting rod are installed inside the mechanism box, which is waterproof. To prevent the electrical control components inside the box from getting damp, an electric heater is installed inside the mechanism box.

5. The transmission mechanism includes insulation rods, connecting arms, and guide rods. By adjusting the length of the insulation rods and guide rods, the opening distance and overtravel of the switch can be adjusted.

6. Principle of conductive circuit: The current is led to the static and dynamic ends of the vacuum arc extinguishing chamber through the upper and lower output terminals, and is led out to the lower output terminal through flexible connections and current transformers.

Construction of 35KV outdoor high-voltage vacuum circuit breaker tunnel and highway in Aba Prefecture: Markang City, Jiuzhaigou Valley Scenic and Historic Interest Area County, Xiaojin County, Aba County, Ruoergai County, Hongyuan County, Rangtang County, Wenchuan County, Li County, Mao County, Songpan County, Jinchuan County and Heishui County.