Vacuum switches for electrical line | equipment protection

Technical Specifications

Voltage Range: Commonly used from 6 kV to 36 kV, suitable for both medium and high voltage networks.
Current Range: Typically ranges from 630 A to 2500 A, depending on the operating environment and electrical load requirements.
Short-Circuit Breaking Current: Up to 25 kA or more, depending on the switch type.
Insulating Medium: Vacuum (acts as an arc extinguishing medium, ensuring safe and reliable interruption of electrical flow).
Installation: Typically installed in medium or high voltage distribution cabinets.
Operating Cycles: Most models are designed for thousands of switching cycles, ensuring durability.
Ambient Temperature Range: Usually from -25°C to +50°C.
Compliance Standards: IEC 62271-100 and IEEE C37.04, ensuring safety and reliability requirements.
Usage

Vacuum circuit breakers are versatile electrical protection devices used in:

Power Transmission Lines: Protects electrical lines from overloads and short circuits.
Substations and Power Stations: Ensures safe and reliable energy distribution to consumers.
Industrial Facilities: Protects production lines and equipment where reliable electrical protection is required.
Infrastructure Facilities: Used in urban infrastructure networks, railways, and airports, where stable and uninterrupted power supply is crucial.
Pros

Durability: Vacuum circuit breakers are designed for numerous operation cycles, providing long service life, making them a cost-effective long-term solution.
High Reliability: The vacuum medium ensures quick arc extinction without additional materials, making the breakers reliable and safe.
Low Maintenance: Vacuum circuit breakers require minimal maintenance as the vacuum technology resists environmental impact and mechanical wear.
High Interrupting Capacity: These breakers can safely interrupt large currents (in the event of short circuits) and quickly stop the electrical flow, protecting lines and equipment.
Eco-Friendly: The use of a vacuum medium means no hazardous gases or oil leakage, making these breakers environmentally friendly.
Compact Size: The compact design allows easy integration of vacuum circuit breakers into electrical distribution systems.
Cons

Higher Initial Investment: Vacuum circuit breakers are more expensive than some other protection devices, such as oil circuit breakers.
Limited Application Range in Extreme Voltages: Vacuum circuit breakers are generally used in the medium voltage range (up to 36 kV) – at extremely high voltages, specialized solutions are required.
Sensitivity to High Frequency Effects: High-frequency electrical fluctuations can affect vacuum circuit breaker performance, requiring additional protection in certain areas.
Replacement Needs After Faults: In some models, loss of vacuum or malfunction requires a complete breaker replacement rather than repair, which may increase maintenance costs.
Vacuum circuit breakers are reliable, durable, and low-maintenance electrical protection solutions designed for medium and high voltage systems. They are ideal for industrial and commercial sectors where stable and safe power supply is essential. With advanced vacuum technology, these breakers efficiently extinguish arcs and protect equipment from overloads and short circuits.