GRANSO:Your Professional Circuit Breaker in Gas-Insulated Switchgear Manufacturer!
Since its founding in 2010, Granso's first factory has grown into one of China's largest metal component manufacturers. Granso specializes in producing components for switchgear ranging from 7.2kV to 40.5kV, such as interlocks, circuit breakers, load switches, earthing switches, vacuum circuit breakers, and insulation. Through partnerships with renowned brands such as CHNT, DELIXI, and HUAWEI, Granso's annual output value has reached US$60 million.
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![Gas Insulated Circuit Breaker]()
Gas Insulated Circuit BreakerGas insulated circuit breaker with disconnector differs from others. While they are integrated, the disconnector is located above the circuit breaker. Consequently, the operating mechanisms for...view more -
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Gas Insulated BreakerThis gas-insulated circuit breaker with disconnector is 12KV 630A, which is used in gas insulated switchgear (GIS) to protect cables and machines from overloads, short circuits and insulation faults.view more -
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Gas Insulated Substation Components12KV 1000A High-voltage circuit breakers ,like this kind gas insulated substation components, (often termed high-voltage switches) plays a critical role in SF₆ gas-insulated switchgears.view more -
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Gis Circuit BreakerGis circuit breaker is a three-position circuit breaker with disconnector and grounding, which adopts a splint-type structure and has the characteristics of small size, reliable breaking...view more
Why Choose Us
Our Factory
Owning three factories with 23000+ square meters together, Granso now has over 200+ staff, 25+ technicians. The self-production rate of parts in our company is as high as over 90%.
Quality Control
We rigorously control every process, ensuring our products comply with relevant standards such as GB7251.1, GBT/23359, and JB/T9661.
One-Stop Service
In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation.During the sales period, we ensure timely delivery and provide installation guidance.For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.
Technical Parameters
|
No. |
Item |
Unit |
Data |
|
1 |
Rated frequency |
Hz |
50 |
|
2 |
Rated current |
A |
630 |
|
3 |
Rated short-time withstand current |
kA |
20/25 |
|
4 |
Rated peak withstand current |
kA |
50 |
|
5 |
Rated short-circuit duration |
s |
4 |
|
6 |
Rated short-circuit closing current |
kA |
50 |
|
7 |
Rated operating sequence |
0-0.3s-CO-180s-CO |
|
Advantages of Circuit Breaker in Gas-Insulated Switchgear
High Efficiency:
Circuit breaker in gas-insulated switchgear has higher efficiency than most other breakers because SF6 safely and quickly break high-voltage currents.
01
Excellent Insulation:
Circuit breaker in gas-insulated switchgear has strong insulation. It keeps the system safe from electrical arcs.
02
Low Maintenance:
These breakers are kept in good condition because the gas prevents the system from damage or wear.
03
Compact Size:
The high insulating strength of SF6 allows the equipment to be smaller in size, so it saves space.
04
Reliable Operation:
Circuit breaker in gas-insulated switchgear is reliable and strong. These breakers work well in a variety of weather and environmental conditions.
05
Applications of Circuit Breaker in Gas-Insulated Switchgear
Power Transmission & Distribution:
GIS circuit breakers are integral to the stable operation of electrical grids, reliably interrupting fault currents to prevent extended power outages and maintain grid stability.
Power Generation:
In power plants, GIS protects and controls the power flow from generators to the grid, handling high voltages and currents.
Space-Constrained Environments:
Due to their compact design and smaller clearances, GIS equipment with circuit breakers is perfect for urban areas, underground substations, and offshore platforms where space is limited.
Industrial & Sensitive Applications:
Industries such as petrochemical, mining, and data centers rely on GIS for their high reliability and ability to function in harsh environments with critical processes.
Renewable Energy:
In comparison with the type of equipment, wind farms and solar power plants prefer using GIS for more efficient energy transfer. This is because GIS guarantees stable power flow and electrical fault prevention which is vital for renewable energy projects.
Components of Circuit Breaker in Gas-Insulated Switchgear
Interrupter (Burning Chamber): This is the core component of a gas-insulated circuit breaker, responsible for extinguishing the arc. The arc extinguishing chamber contains the moving and stationary contacts, the insulating nozzle, and the associated arc-extinguishing mechanism.
Operating Mechanism: This component provides the mechanical energy required to open and close the circuit breaker. Common operating methods include manual and electric operation, with electric operation enabling remote control and automation.
Gas System and Density Monitoring: The circuit breaker is filled with SF6 gas at a specific pressure. A sophisticated gas system manages the filling, circulation, and sealing of the SF6 gas.
Insulation Support System: High-performance insulating materials such as porcelain post insulators, solid insulators (e.g., epoxy post insulators), or composite insulators are used to support and isolate live parts. This ensures excellent insulation performance under high voltage conditions.
Enclosure: Common structural types include:
Live Can (Porcelain Post): The circuit breaker consists of multiple independent phases, with the internal arc extinguishing chamber and other live parts of each phase supported by porcelain insulators.
Dead tank type (tank type): In this design, the interrupter, and sometimes even the disconnector, are integrated into a sealed metal tank filled with SF6 gas. This configuration is common in SF6 switchgear and SF6GIS devices. It is more compact, has better pollution resistance, and is safer to operate.
Packing and Shipping
|
Packing |
Carton/ Wooden Case / Pallet |
|
Shipping |
Express, Air Freight, Sea Freight, LCL/FCL |
FAQ
We're professional circuit breaker in gas-insulated switchgear manufacturers and suppliers in China, specialized in providing high quality custom service. We warmly welcome you to buy circuit breaker in gas-insulated switchgear at competitive price from our factory.
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