- Detail
Overview
Since the 1950s, the development of medium-voltage switchgear has gone through stages such as open type, cubicle type, and metal-enclosed type. There are no longer any issues in meeting the functional use requirements of the equipment, and the products have long been standardized and fully covered in terms of usage. The environmentally friendly gas-insulated ring main unit, which is compact, maintenance-free, highly modular, and safe and reliable, has rapidly developed. It can realize remote monitoring, control, and management of the power distribution network, meeting the needs for grid optimization, electricity safety, energy management, and energy saving; the system can also be widely applied in intelligent power distribution fields such as transportation, factories, hospitals, schools, buildings, residential communities, and commercial office buildings.
The HBN-12 energy-saving and environmentally friendly fully insulated ring main unit has comprehensively introduced production equipment and manufacturing technology, achieving localized production, greatly reducing manufacturing costs, shortening delivery time, and receiving high praise from users after its launch.
Product Features
◇ Functional Integration, All-in-One Product
The switchgear's gas-filled enclosure is made of high-quality 2.5mm thick stainless steel plate welded with laser technology, ensuring the reliability of the gas-tight box, high mechanical strength, and good corrosion resistance. The protection level of the gas-filled enclosure reaches IP67; the gas box is equipped with an explosion-proof diaphragm, which can effectively prevent harm to people and equipment caused by excessive gas pressure; all conductive components are enclosed within the gas box, which not only avoids the influence of external environmental factors but also improves operational reliability, enabling maintenance-free (or low-maintenance) functionality while meeting the requirements for compact size.
The switch uses a three-position (isolating, grounding) vacuum interrupter, which is currently a technically mature configuration, particularly suitable for the operational and maintenance needs of the current power grid.
◇ Environmentally Friendly, Pollution-Free
The HBN-12 energy-saving and environmentally friendly fully insulated ring main unit uses zero-grade dry air (commercially purchased) or 99.99% pure N2 that meets GB/T 8979-2008 as the insulating medium. Gas leakage does not cause any impact on the external environment, and no recovery treatment is required.
◇ Complete Mechanical Interlock
The operation panel of the HBN-12 energy-saving and environmentally friendly fully insulated ring main unit is equipped with a complete five-prevention mechanical interlock function. All interlock functions are pre-installed internally; please follow the operation instructions in order during use, making it very convenient to operate.
◇ Flexible Expansion Design
The HBN-12 energy-saving and environmentally friendly fully insulated ring main unit is modular in design, allowing various modules to be connected through dedicated bus connectors to achieve diversified unit combinations, maximizing the satisfaction of complex and diverse distribution design schemes in different regions of China.
