110KV High Voltage Circuit Breaker

The LW36-126 (W)/T3150-40 self powered high-voltage AC sulfur hexafluoride circuit breaker is an outdoor product suitable for use in power grids with a rated voltage of 126kV in areas with an altitude not exceeding 3000 meters, an ambient temperature not lower than -40 ℃, and a pollution level not higher than IV. It is used to cut off rated current, fault current, or conversion lines, achieve control and protection of the power system, and can also be used as a contact circuit breaker.110KV High Voltage Circuit Breaker
structural characteristics
The LW36-126 self powered high-voltage AC sulfur hexafluoride circuit breaker is a new type of circuit breaker with horizontal capabilities.

Performance Characteristics - Safe and Reliable
Reliable breaking performance: The self powered arc extinguishing technology adopted by Xi'an Shuchen High Voltage Switch Manufacturing Co., Ltd. can continuously break a short-circuit current of 40kA 22 times without maintenance.
Reliable mechanical operation performance:Xi'an Shuchen High Voltage Switch Manufacturing Co., LtdThe continuous operation lifespan of the machinery can reach 6000 times, and with simple adjustments, it can reach over 10000 times, demonstrating high operational reliability.
Reliable insulation capability: The external insulation creepage distance is ≥ 31mm/kV, with strong pollution resistance, suitable for safe operation in harsh environments with an altitude not exceeding 3000m. The insulation rod can withstand 250kV/5 minutes in air.
Reliable sealing performance: ensuring that the annual leakage rate of sulfur hexafluoride gas is far less than 0.5%,
The dehumidification process of product components is strict: the moisture content of SF6 is much lower than that of similar products.
Structural Features - Novelty
Adopting the self powered arc extinguishing principle, the operating power is low.
The arc extinguishing chamber valve plate is made of a new type of high-temperature resistant and lightweight special alloy. Compared with similar products that use traditional materials, the airflow characteristics and breaking performance are more stable and reliable.
The nozzle is composed of imported PTFE (polytetrafluoroethylene) and other trace components, with stable breaking performance and strong burn resistance.
Using high-quality ceramic sleeves with good bending resistance, strict and reliable production technology and quality control, it can ensure the safe operation of the circuit breaker.
The insulation rod of the circuit breaker adopts our company's anti loosening measures, making the operation of the circuit breaker more reliable.
Adopting a spring operated mechanism with low operating power, light weight, and low noise, there is no leakage and high reliability.
Important components within the organization are forged from high-quality alloy steel, which has high strength, wear resistance, and can ensure frequent operation of circuit breakers with low failure rates.
The secondary circuit electrical components and SF6 density controller are made of high-quality products.

The product has a novel and bright appearance, and a compact structure. The installation chassis is made of thick steel plates that are bent as a whole, and the surface is hot-dip galvanized. The exposed fasteners use high-strength hot-dip galvanized bolts, and the inter phase transmission connecting rods use high-strength aluminum or stainless steel profiles. The mechanism box is made of stainless steel, and the product has excellent corrosion resistance110KV High Voltage Circuit Breaker

vacuum interrupter

According to different switch types, there are external shielded ceramic vacuum arc extinguishing chambers, middle sealed cup-shaped longitudinal magnetic field miniaturized vacuum arc extinguishing chambers, and internal sealed glass bubble arc extinguishing chambers. Their basic structures are as follows:

①Airtight insulation system(shell)

The airtight insulation system composed of a ceramic, glass or microcrystalline glass airtight insulation cylinder, a moving end cover plate, a fixed end cover plate, and a stainless steel corrugated tube is a vacuum sealed container. In order to ensure airtightness, in addition to strict operating procedures in sealing, it is also required that the material itself has low breathability and internal air release.

②Conductive system

Composed of a fixed conductive rod, a fixed running arc surface, a fixed contact, a moving contact, a moving running arc surface, and a moving conductive rod. There are roughly three types of contact structures: cylindrical contacts, transverse magnetic field contacts with spiral groove running arc surfaces, and longitudinal magnetic field contacts. At present, longitudinal magnetic field technology is used, and this type of arc extinguishing chamber has strong and stable arc breaking ability.

③Shielding system

The shielding cover is a component in the vacuum arc extinguishing chamber, and there are various types of shielding covers such as the main shielding cover, corrugated tube shielding cover, and pressure equalization shielding cover that surround the contacts. The function of the main shielding cover is to prevent arc products from splashing onto the inner wall of the insulation shell during the arc ignition process, thereby reducing the insulation strength of the shell. Improving the uniformity of electric field distribution inside the arc extinguishing chamber is beneficial for reducing local field strength and promoting the miniaturization of vacuum arc extinguishing chambers. The condensed arc product absorbs a portion of the arc energy, which helps to restore the strength of the gap medium behind the arc