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This switchgear strictly adheres to several industry standards, including the national standard GB3906, the Ministry of Electric Power's DL404, and the international standard IEC298. Adherence to these standards ensures that the product's design, manufacturing, and performance meet high-level specification requirements.
One of its core features is the integrated "five-prevention" interlocking function, a mechanism that effectively prevents incorrect operation of the circuit breaker, pushing or pulling the handcart under load, closing the grounding switch while energized, energizing the system with the grounding switch in the grounded position, and accidental entry into an energized compartment. This significantly enhances operational safety and reliability.
Regarding its main component configuration, the XGN2-12(Z) switchgear can be equipped with either the ZN28-12 or VS1-12 vacuum circuit breakers as the main switch. The isolating switch utilizes the GN30-12 and GN22-12 series. Furthermore, the transformer adopts a fully insulated structure, further ensuring a high level of safety for the entire cabinet. The VD4 vacuum circuit breaker is also mentioned as an optional component within this series.
The technical parameters of this equipment are comprehensive, with a rated voltage range of 3.6kV, 7.2kV, and 12kV. The rated current spans from 630A to 4000A, supporting operating current levels of 6301000A, 12501600A, 2000~3150A, and 4000A. The rated short-circuit opening current can reach 20/25kA, 31.5kA, 40kA, or 50kA, with corresponding ratings for rated short-time withstand current and rated peak withstand current.
The switchgear has a thermal stability time of 4 seconds. Its enclosure protection level is IP3X, making it suitable for indoor operating conditions. Additionally, it supports remote monitoring, facilitating integrated management within modern power systems.
In terms of dimensions, the single busbar without bypass structured switchgear has widths of 1100mm or 1200mm, with a uniform depth of 1200mm for units 1250A and below, and 1200mm for units 1250A and above. For the single busbar with bypass structure, the width can be 1100mm or 1200mm, with depths of 1600mm (for 1250A and below) or 1900mm (for 1250A and above) respectively. The equipment's internal structure is clearly defined, typically comprising the busbar room, circuit breaker room, lower isolation room, cable room, and relay instrument room, ensuring functional partitioning and ease of maintenance.
