LW55-35KV
The LW55-35KV is a high-performance outdoor three-phase AC SF6 circuit breaker designed for 35kV medium and high voltage power transmission and distribution systems. Manufactured in strict accordance with IEC 62271-100 and GB international standards, this professional high voltage switchgear is widely applied in urban and rural power grids, industrial and mining enterprises, power substations, wind power, photovoltaic power stations and other power distribution projects for circuit switching, overload protection and short-circuit fault isolation.
Adopting high-purity SF6 gas as insulation and arc-extinguishing medium, the LW55-35KV circuit breaker utilizes advanced self-energy arc extinguishing technology. It boasts excellent dielectric insulation performance and fast arc extinction speed, with stable and reliable short-circuit breaking capacity. The equipment can effectively eliminate various grid faults and ensure safe and stable operation of 35kV power systems. Compared with traditional high voltage breakers, it has lower operating energy consumption and smaller mechanical loss.
Equipped with a mature spring operating mechanism, the LW55-35KV outdoor SF6 circuit breaker delivers accurate, stable and consistent closing and opening actions with ultra-low failure rate. The fully sealed integrated structure is treated with multi-process anti-corrosion, waterproof, dust-proof and salt spray resistance, enabling it to adapt to diverse harsh outdoor environments such as high altitude, low temperature, coastal humidity and dusty industrial areas.
With a compact and optimized structural design, the LW55-35KV high voltage breaker is lightweight and easy to transport, hoist and install on site, greatly saving construction cycle and engineering cost. The equipment features ultra-low daily maintenance requirements, which significantly reduces the later operation and maintenance pressure of power grid projects and improves overall power system operation efficiency.
As mainstream core equipment for 35kV power grid construction and renovation, the LW55-35KV SF6 circuit breaker features high safety, strong environmental adaptability and long service life. We provide global customers with factory direct sales, customized technical solutions, complete certification documents and professional after-sales support to deliver cost-effective power switchgear for various power engineering projects.
Adopting high-purity SF6 gas as insulation and arc-extinguishing medium, the LW55-35KV circuit breaker utilizes advanced self-energy arc extinguishing technology. It boasts excellent dielectric insulation performance and fast arc extinction speed, with stable and reliable short-circuit breaking capacity. The equipment can effectively eliminate various grid faults and ensure safe and stable operation of 35kV power systems. Compared with traditional high voltage breakers, it has lower operating energy consumption and smaller mechanical loss.
Equipped with a mature spring operating mechanism, the LW55-35KV outdoor SF6 circuit breaker delivers accurate, stable and consistent closing and opening actions with ultra-low failure rate. The fully sealed integrated structure is treated with multi-process anti-corrosion, waterproof, dust-proof and salt spray resistance, enabling it to adapt to diverse harsh outdoor environments such as high altitude, low temperature, coastal humidity and dusty industrial areas.
With a compact and optimized structural design, the LW55-35KV high voltage breaker is lightweight and easy to transport, hoist and install on site, greatly saving construction cycle and engineering cost. The equipment features ultra-low daily maintenance requirements, which significantly reduces the later operation and maintenance pressure of power grid projects and improves overall power system operation efficiency.
As mainstream core equipment for 35kV power grid construction and renovation, the LW55-35KV SF6 circuit breaker features high safety, strong environmental adaptability and long service life. We provide global customers with factory direct sales, customized technical solutions, complete certification documents and professional after-sales support to deliver cost-effective power switchgear for various power engineering projects.
Product Details
35KV sulfur hexafluoride circuit breaker is a three-phase AC 50Hz outdoor high-voltage electrical equipment, suitable for the control and protection of 40.5KV power transmission and distribution system, and can also be used as a contact circuit breaker and opening and closing capacitor bank occasions.
Main features of 35KV sulfur hexafluoride circuit breaker
The product has excellent breaking performance, adopts compressed gas arc extinguishing chamber, short arcing time, long electrical life, and continuously breaks 31.5kA short-circuit current 21 times at rated voltage without maintenance LW8-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker
No sulfur hexafluoride gas is replaced; high mechanical reliability. Mechanical life is more than 3000 times; can be operated frequently, each can be equipped with 12 current transformers for users to choose. The product adopts a new MKZ type SF6 pointer density meter, the pressure gauge reading is not affected by temperature changes, and is easy to use.
The circuit breaker meets the requirements of the national standard GB1984-89 "AC High Voltage Circuit Breaker" and the Electric Power Committee standard IEC56 publication "High Voltage AC Circuit Breaker".
This product is equipped with CT14 spring mechanism.
3. Main technical parameters
LW8-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker
No. Project name Parameter
1 Rated voltage (kV) 40.5
2 Rated current (A) 2000
3 Rated short-circuit breaking current (kA) 31.5
4 Rated out-of-step breaking current (kA) 7.9
5 Rated opening and closing current of a single capacitor bank (A) 400
6 Rated operation sequence Open-0.3s-Close-Open-180s-Close-Open
7 Rated filling pressure of SF6 gas (MPa) 0.45
8 Opening time (ms) ≤60
9 Closing time (ms) ≤100
10 Opening speed (m/s) 3.4
11 Closing speed (m/s) 3.2
12 Circuit breaker weight (kg) 1400
4. Main parameters of CT14 spring mechanism
Closing coil a.c.220V,3.5A d.c.110V,3.6A d.c.220V,1.8A
Disconnection coil a.c.220V,3.5A d.c.110V,4.8A d.c.220V,2.4A
Motor a.c.220V,5A d.c.220V,5A d.c.110V,10A
Energy storage time ≤15s
5. Environmental conditions
[1] Altitude: ≤3000m.
[2] Ambient temperature: -30℃～+40℃.
[3] Pollution level: Level II, Level III, Level IV.
[4] Relative humidity: daily average not more than 95%, monthly average not more than 90% (25℃).
[5] Wind pressure: not more than 700Pa (equivalent to 34m/s).
[6] The environment is free from flammable substances, explosion hazards, chemical corrosion and severe vibration.
Main features of 35KV sulfur hexafluoride circuit breaker
The product has excellent breaking performance, adopts compressed gas arc extinguishing chamber, short arcing time, long electrical life, and continuously breaks 31.5kA short-circuit current 21 times at rated voltage without maintenance LW8-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker
No sulfur hexafluoride gas is replaced; high mechanical reliability. Mechanical life is more than 3000 times; can be operated frequently, each can be equipped with 12 current transformers for users to choose. The product adopts a new MKZ type SF6 pointer density meter, the pressure gauge reading is not affected by temperature changes, and is easy to use.
The circuit breaker meets the requirements of the national standard GB1984-89 "AC High Voltage Circuit Breaker" and the Electric Power Committee standard IEC56 publication "High Voltage AC Circuit Breaker".
This product is equipped with CT14 spring mechanism.
3. Main technical parameters
LW8-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker
No. Project name Parameter
1 Rated voltage (kV) 40.5
2 Rated current (A) 2000
3 Rated short-circuit breaking current (kA) 31.5
4 Rated out-of-step breaking current (kA) 7.9
5 Rated opening and closing current of a single capacitor bank (A) 400
6 Rated operation sequence Open-0.3s-Close-Open-180s-Close-Open
7 Rated filling pressure of SF6 gas (MPa) 0.45
8 Opening time (ms) ≤60
9 Closing time (ms) ≤100
10 Opening speed (m/s) 3.4
11 Closing speed (m/s) 3.2
12 Circuit breaker weight (kg) 1400
4. Main parameters of CT14 spring mechanism
Closing coil a.c.220V,3.5A d.c.110V,3.6A d.c.220V,1.8A
Disconnection coil a.c.220V,3.5A d.c.110V,4.8A d.c.220V,2.4A
Motor a.c.220V,5A d.c.220V,5A d.c.110V,10A
Energy storage time ≤15s
5. Environmental conditions
[1] Altitude: ≤3000m.
[2] Ambient temperature: -30℃～+40℃.
[3] Pollution level: Level II, Level III, Level IV.
[4] Relative humidity: daily average not more than 95%, monthly average not more than 90% (25℃).
[5] Wind pressure: not more than 700Pa (equivalent to 34m/s).
[6] The environment is free from flammable substances, explosion hazards, chemical corrosion and severe vibration.
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