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NSRM-10
NSRM-10 SF6 gas-insulated ring main unitV
The 10kV SF6 gas filling cabinet is one of the most widely used medium voltage switchgear in the domestic distribution network. It uses SF6 gas as the insulation medium and integrates core components such as circuit breakers, load switches, and isolating switches into a sealed gas box. The overall structure is compact and the volume is small, which can adapt to various indoor and outdoor installation environments. This voltage level inflatable cabinet complies with domestic standards such as GB/T 11022, and is optimized for the load characteristics of China’s distribution network. It has reliable insulation performance and arc extinguishing ability, and is a core equipment for urban network renovation, industrial park distribution, and residential area power supply. It can effectively reduce the footprint and improve the stability of distribution network operation.
Features
1. Strong adaptability, fully compatible with the mainstream architecture of domestic 10kV distribution networks, highly compatible with existing transformers, cables and other equipment, and can be put into use without additional modifications.
2. Low operation and maintenance costs, excellent SF6 gas sealing performance, leakage rate ≤ 0.1%/year, no need for frequent gas replenishment under normal operation, and the components are sealed in the gas box to avoid external environmental influences such as moisture, dust, and pollution. The maintenance cycle can be extended to 5-8 years.
3. With outstanding safety performance, the gas box is welded with high-strength steel plates and has explosion-proof and anti condensation design. The arc extinguishing process has no open flames or odors, which can effectively avoid personal safety accidents and equipment failures.
4. High cost-effectiveness, optimized production processes for domestic market demand, controlling manufacturing costs while ensuring performance, suitable for large-scale promotion and application.
Rated current range: 630A-3150A, rated short-circuit breaking current: 20kA-40kA, air box protection level up to IP67, can operate stably in extreme temperature environments from -40 ℃ to+70 ℃. Supports manual/electric operation mode, equipped with a complete secondary control circuit, capable of remote monitoring, fault alarm, automatic opening and closing, and other functions. Optional vacuum circuit breakers or SF6 load switches can be used to meet the power supply needs of different load types (such as capacitive loads and inductive loads), while supporting modular expansion. The output circuits can be added or removed according to the actual distribution plan.
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Specification
| Item | Unit | Model C | Model F | Model V | Model CB |
| Rated voltage | kV | 10 | 10 | 10 | 10 |
| Rated frequency | Hz | 50 | 50 | 50 | 50 |
| Power frequency withstand voltage (phase to phase/port) | kV | 28/32 | 28/32 | 28/32 | 28/32 |
| Lightning impulse withstand voltage | kV | 75/85 | 75/85 | 75/85 | 75/85 |
| Rated current | A | 630 | – | 630/1250 | 630/1250 |
| Rated closed-loop breaking current | A | 630 | 630 | – | – |
| Rated cable charging breaking current | A | 135 | 135 | – | – |
| Rated short-circuit closing current (peak) | A | 50 | 80 | 50 | 50 |
| Rated peak withstand current | A | 50 | – | 50 | 50 |
| Rated short-time withstand current | kA/3s | 20 | – | 20 | 20 |
| Rated short-circuit breaking current | kA | 20 | 31.5 | 20 | 25 |
| Rated transfer current | A | – | 1750 | – | – |
| Maximum current of equipped fuse | A | – | 125 | – | – |
| Circuit resistance | -n | ≤300 | ≤600 | ≤300 | ≤300 |
| Mechanical lifespan | times | 5000 | 5000 | 5000 | 5000 |
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FAQs
How much space can a 10kV SF6 charging cabinet save compared to traditional switchgear?
Compared to traditional armored withdrawable switchgear, it can save 40% -60% of floor space, especially suitable for limited space scenarios such as urban core areas and narrow distribution rooms.
Will SF6 gas have an impact on the environment?
The equipment uses high-purity SF6 gas, with reliable sealing performance and no leakage during normal operation; When scrapped, SF6 gas can be recovered, purified and reused through professional recycling equipment, which meets environmental standards and avoids environmental pollution.
Does the device support intelligent upgrades?
Supports the integration of intelligent sensors and wireless communication modules to achieve real-time collection and upload of switch status, gas pressure, temperature and other parameters, and connects to the distribution network automation system to meet the needs of smart grid construction.
Related Applications
Widely used in various core distribution scenarios, adaptability and reliability run through all scenario requirements: In urban distribution network renovation, it can accurately adapt to narrow distribution room spaces in old urban areas, replace traditional switchgear, significantly reduce land occupation, cooperate with distribution network automation upgrades to achieve remote control, reduce the impact of line maintenance on residents’ lives, and help improve the reliability of urban power supply; In the power distribution of newly-built residential communities, in line with the characteristics of high plot ratio and limited space of distribution rooms in modern communities, compact design can be flexibly embedded in underground distribution rooms or building distribution rooms. Anti condensation and explosion-proof safety design can effectively avoid electrical safety risks in residential areas, while adapting to the management mode of community property with low operation and maintenance needs.
In the power supply of commercial complexes, it can meet the intensive load demands of multiple formats such as shopping malls, office buildings, and catering, support multi circuit expansion to adapt to power supply in different areas, and have the ability to quickly extinguish arcs to cope with sudden load fluctuations, ensuring uninterrupted operation of key equipment such as air conditioning, elevators, and fire protection.
In the power distribution of production lines in industrial parks, it can withstand complex environments such as workshop dust and oil pollution. The sealed structure avoids component corrosion and aging, and the long maintenance cycle can reduce the interference of downtime and maintenance on the production line. At the same time, it is well compatible with various inductive and capacitive production equipment, and stably supports continuous production.
In the power supply of highway service areas and toll stations, it is suitable for outdoor or simple distribution room installation. The wide temperature operation capability from -40 ℃ to+70 ℃ can withstand extreme weather, and the remote monitoring function reduces the commuting of inspection personnel, ensuring stable power supply for lighting, charging piles, and toll station management systems in the service area; In the grid connection of photovoltaic/wind power distributed energy, it has excellent insulation and arc extinguishing performance, can adapt to the fluctuating voltage of new energy generation, quickly respond to grid connection needs, assist in the efficient integration of distributed energy into the distribution network, and achieve on-site consumption of clean energy; In underground auxiliary power distribution in mines, the compact size can adapt to the narrow tunnel space underground, and the explosion-proof and moisture-proof design can cope with the harsh environment of high humidity and high dust underground, providing stable power supply for auxiliary equipment such as ventilation, drainage, and transportation, and ensuring the safety of mining operations. This device is particularly suitable for power distribution projects that have high requirements for equipment reliability, footprint, and ease of operation and maintenance.
