Inflatable Cabinet Circuit Breaker
Gas filled cabinet is a high-voltage switchgear, mainly used for the protection and control of power distribution systems. The following are its key features and selection points:
1. Structure and composition
Inflatable cabinet circuit breakers usually consist of the following parts:
Gas chamber: filled with insulating gas (such as sulfur hexafluoride SF6), used to isolate live parts.
Contact system: realize the connection and disconnection of the circuit.
Operating mechanism: control the contact system, support manual or electric operation.
Protective device: including overload, short circuit and overvoltage protection functions.
2. Product features
Insulation performance: SF6 gas or environmentally friendly gas is used as the insulating medium, with excellent insulation performance.
Modular design: such as VJG series environmentally friendly inflatable cabinet circuit breakers, using modular spring operating mechanism, long life (60,000 times) and high reliability.
Maintenance-free: The primary circuit adopts a sealed pole structure, and the secondary circuit integrates a control protection module to reduce maintenance requirements.
3. Key points for selection
When selecting an inflatable cabinet circuit breaker, the following factors should be considered:
Rated voltage: must be greater than or equal to the rated voltage of the circuit.
Rated current: must be greater than or equal to the rated current of the circuit.
Operation mode: select manual or electric operation according to needs.
Protection function: select the corresponding protection function according to the circuit fault situation.
Installation method: needs to match the cabinet structure.
4. Application scenario
Inflatable cabinet circuit breakers are widely used in distribution switch stations, box-type substations, cable distribution boxes and other scenarios to meet the needs of end users or network nodes.
In summary, inflatable cabinet circuit breakers have become important protection and control equipment in distribution systems with their high insulation, modular design and maintenance-free characteristics.
