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NSRM-24
NSRM-24 SF6 gas-insulated ring main unit
The NSRM-24 24KV SF6 charging cabinet is a high-end medium voltage switchgear designed specifically for high standard and demanding distribution environments. As the backbone of distribution systems with voltage levels of 20KV and above, it is known for its excellent insulation performance, strong breaking capacity, and flexible scalability. The product adopts a fully modular design, perfectly integrating different functional units such as load switches, circuit breakers, fuses, etc. into a unified platform, providing top-level power guarantee for key fields such as wind power generation, steel and petrochemical, and high-rise buildings.
Features
1. High end application:
The 24KV voltage level is usually used in places that require extremely high power supply reliability. This product has excellent performance indicators and is the first choice for high-end distribution projects.
2. Powerful breaking:
High performance vacuum circuit breaker modules (V modules) can be configured, with strong short-circuit current breaking capabilities, providing the most rigorous protection for important loads.
3. Perfect Expansion:
Truly achieving a “modular” construction, seamless connection and arbitrary expansion can be achieved between unit modules and between air boxes, meeting complex and ever-changing system requirements.
4. Flood Control Guardian:
With extremely strong water immersion resistance, the air box reaches IP67 protection level, ensuring uninterrupted power supply even in extreme situations such as floods.
5. Full life cycle economy:
Although the initial investment may be slightly higher, its maintenance free operation life of up to 30 years brings excellent full life cycle economy to users.
The NSRM-24 24KV gas filling cabinet is a top-level product designed for high-end and harsh application environments, and its technical parameters represent the leading level in the industry. Rated voltage of 24KV, power frequency withstand voltage up to 65KV, lightning impulse withstand voltage of 125KV, excellent insulation performance. The rated short-time withstand current can reach 25kA or 31.5kA, and the peak withstand current can reach up to 63kA or 80kA, with extremely strong resistance to short-circuit impact. Its rated transfer current is between 1700A and 1750A, with strong performance. The product strictly follows high standard specifications such as GB/T11022 and IEC60056, making it an ideal choice for key fields such as wind energy, petrochemicals, and rail transit.
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Specification
| Item | Unit | Model C | Model F | Model V | Model CB |
| Rated voltage | kV | 24 | 24 | 24 | 24 |
| Rated frequency | Hz | 50 | 50 | 50 | 50 |
| Power frequency withstand voltage (phase to phase/port) | kV | 50/60 | 50/60 | 50/60 | 50/60 |
| Lightning impulse withstand voltage | kV | 125/145 | 125/145 | 125/145 | 125/145 |
| 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
What are the key areas in which 24KV gas filling cabinets are usually used?
Mainly used in wind power generation, petrochemicals, rail transit, high-rise buildings, and large data centers that require extremely high power supply reliability.
What are the advantages of circuit breaker modules?
The circuit breaker module has strong short-circuit current breaking capability, which can quickly cut off faults, protect downstream equipment, and can cooperate with relay protection devices to achieve various automation functions.
What does IP67 protection level mean?
This means that the air box is completely dust-proof and can withstand water immersion for a short period of time, making it suitable for harsh environments such as underground power distribution rooms, beaches, and mines.
How to ensure the long-term reliability of equipment?
By selecting high-quality materials, advanced manufacturing processes, strict quality inspections, and fully sealed maintenance free design, we ensure reliable operation of the equipment for over 30 years.
Does it support customized services?
Yes, we can provide professional customized services based on customers’ specific needs, such as special voltage, current, external dimensions, or intelligent requirements.
Related Applications
Wind power generation: widely used in the booster stations and unit towers of wind farms, suitable for harsh environments such as high salt spray and high humidity at the seaside.
Petrochemical industry: meets the strict requirements of explosion-proof, anti-corrosion, and high reliability in the petrochemical industry, used in hazardous areas such as refineries and chemical plants.
Rail transit: Provide stable and reliable power support for transportation hubs such as high-speed rail, subway, and airports, ensuring smooth traffic arteries.
High end commercial real estate and civilian use: used for central distribution rooms in super high-rise buildings, large commercial complexes, etc., to ensure foolproof power supply.
