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NSHBG-7.2
NSHBG-7.2 Environmentally friendly gas-insulated ring main unit
NSHBG-7.2 7.2kV environmentally friendly gas insulated ring main unit is a high-end distribution equipment designed for high-end industrial and intelligent distribution network scenarios. It uses a new low GWP environmentally friendly mixed gas as the insulation medium, integrates circuit breakers, load switches, intelligent monitoring modules, transformers and other components, and adopts a drawer type modular+intelligent linkage design, balancing high-precision voltage adaptation, efficient operation and maintenance, and green environmental protection characteristics. This device complies with the dual standards of GB/T 11022 and IEC 62271, and is suitable for scenarios such as semiconductors, high-end manufacturing, and smart parks that require high levels of power supply continuity, intelligence, and environmental protection. It is the core equipment for the green upgrade of high-end distribution networks.
Features
1. Accurate voltage adaptation, optimized insulation design for 7.2kV power grid characteristics, partial discharge level ≤ 10pC, sufficient insulation margin, can effectively avoid the impact of voltage fluctuations on precision equipment, ensuring stable power supply for high-end loads.
2. Environmental performance upgrade, using a new type of environmentally friendly mixed gas, GWP value is reduced by more than 99% compared to SF ₆, insulation arc extinguishing performance is better than traditional environmentally friendly gases, and the gas can be 100% recycled, purified and reused.
3. High degree of intelligence, integrated AI intelligent diagnostic module, can real-time collect multi-dimensional parameters such as gas status, switch mechanical characteristics, partial discharge, harmonics, etc., predict faults through algorithms, and achieve state maintenance and intelligent linkage.
4. With the ability to expand live capacity, a non-destructive live expansion structure is adopted. The newly added circuit can be installed and debugged without affecting the original power supply, ensuring the continuity of power supply.
Rated current range: 800A-3150A, rated short-circuit breaking current: 25kA-40kA, air box protection level IP67, applicable temperature range -30 ℃ to+65 ℃, air leakage rate ≤ 0.05%/year. Support seamless linkage with GIS devices, energy storage systems, and intelligent distribution network platforms to achieve precise load control and rapid fault self-healing. Adopting oil-free and low-noise design, the operating noise is ≤ 60 decibels, and the service life of the air box is ≥ 25 years. The components are selected from high-end brands to ensure reliable operation in high-end scenarios.
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Specification
| Serial No. | Item | PT Module | V Module | |
| Disconnecting Switch | Vacuum Circuit Breaker | Isolation/Earth Switch | ||
| 1 | Rated Voltage | 7.2 | ||
| 2 | 1min Power Frequency Withstand Voltage | 20/23 | ||
| 3 | Lightning Impulse Withstand Voltage | 40/46 | ||
| 4 | Rated Current | 630 | 630 | 630 |
| 5 | Short-Circuit Breaking Current | 20 | ||
| 6 | Short-Circuit Making Current | 50 | ||
| 7 | Short-Time Withstand Current | 20 | 20 | 20 |
| 8 | Short-Circuit Duration | 4 | 4 | 4 |
| 9 | Mechanical Life | 5000 | 10000 | 5000 |
| 10 | Gas Pressure | 0.025（20℃） | ||
| 11 | Annual Leakage Rate | ≤0.01% | ||
| 12 | Arc Extinguishing Method | Vacuum Arc Extinguishing | ||
| 13 | Protection Class | IP67/4X (Tank/Enclosure) | ||
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FAQs
What are the differences in core adaptation scenarios between the 7.2kV model and the 6kV model?
The core difference lies in voltage accuracy and intelligence level. The 7.2kV model has higher insulation margin and lower partial discharge level, making it suitable for precision manufacturing scenarios that require extremely high voltage stability. In addition, AI intelligent diagnosis and live expansion functions are more complete, making it suitable for high-end intelligent distribution networks.
What is the service life and replacement cost of the new environmentally friendly mixed gas?
The gas service life is synchronized with the equipment life cycle (25 years), without the need for regular replacement. After recycling and purification, it can be reused, and the replacement cost is only 1/5 of SF ₆ gas, with lower long-term operation and maintenance costs.
Does it support linkage with energy storage systems and microgrids?
Supports seamless integration with energy storage systems and microgrid platforms through the IEC 61850 communication protocol, enabling charge discharge linkage, load allocation, and fault self-healing to meet the needs of high-end park microgrid construction.
Related Applications
Precision power distribution scenario in semiconductor factories: For precision processes such as photolithography and etching in semiconductor chip production, the extremely low partial discharge level of equipment can effectively avoid electromagnetic interference and voltage fluctuations, ensuring stable operation of precision equipment. The oil-free and dust-free design meets the requirements of clean workshops in semiconductor factories. The environmentally friendly gas is non-toxic and non corrosive, meeting high-end manufacturing green standards. The AI intelligent diagnostic function can predict faults in advance, avoiding chip production scrap caused by equipment failures and ensuring production continuity.
High end intelligent park distribution scenario: Suitable for the construction of intelligent distribution networks in technology parks and digital parks, it can seamlessly link with park energy storage systems, photovoltaic power stations, and intelligent security systems to achieve precise load control and efficient utilization of green electricity. The live expansion capability can gradually expand the power supply circuit with the entry of park enterprises and the increase of load. The intelligent remote control function facilitates centralized operation and maintenance of the park, and the environmental protection attributes are in line with the park’s green and low-carbon positioning, providing high-quality power supply for office buildings, research and development centers, and high-end manufacturing plants.
High end power distribution scenarios for medical equipment: focusing on operating rooms in tertiary hospitals ICU、 The power supply requirements of precision medical equipment (nuclear magnetic resonance, CT), the extremely high power supply continuity of the equipment can eliminate the risk of power outage, and the low-noise operation does not interfere with the diagnosis and treatment environment. Environmentally friendly gas has no leakage or pollution hazards, complies with safety and environmental regulations for medical facilities, and has AI intelligent monitoring function that can provide real-time feedback on equipment status, ensuring rapid response of emergency power supply and providing reliable power support for life rescue and precision diagnosis and treatment.
Energy storage power stations and microgrid integration scenarios: As the core distribution equipment of energy storage power stations and high-end microgrids, it can achieve seamless linkage with energy storage units and the grid, accurately adapting to the characteristics of frequent charging and discharging switching and wide voltage fluctuation range. The intelligent diagnostic function can monitor the grid connection status in real time, ensuring the stability and safety of the grid connection process. The environmentally friendly gas is in line with the green development concept in the energy storage field. At the same time, the live expansion capability can meet the capacity upgrade needs of energy storage power stations, and help the efficient operation of microgrids.
