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NSRM-40.5
NSRM-40.5 SF6 gas-insulated ring main unit
The NSRM-40.5 40.5kV SF6 gas filling cabinet is a high-end core equipment for medium and high voltage distribution networks. It adopts a fully sealed, modular, and intelligent design, with SF6 gas as the insulation and arc extinguishing medium. It integrates components such as circuit breakers, load switches, grounding switches, transformers, and intelligent measurement and control devices, and has excellent insulation performance, strong arc extinguishing ability, high degree of intelligence, and stable and reliable operation. This product is optimized for 40.5kV high voltage scenarios and can meet the high-end power supply needs of large industrial enterprises, hub substations, new energy bases, and other high-end power supply scenarios. It is a key equipment for the development of distribution networks towards high voltage, large capacity, and intelligence.
Features
1. Excellent high voltage performance:
The rated breaking current can reach 63kA, the short-time withstand current is 63kA/3s, the rated peak withstand current is 160kA, it can withstand high voltage and high current faults, reliable arc extinguishing, and adapt to high voltage distribution network scenarios.
2. Intelligent integrated design:
Integrating AI intelligent measurement and control, remote control, fault prediction and other functions, it can achieve full lifecycle management of equipment, real-time data uploading, automatic fault alarm, remote operation and maintenance, and adapt to the needs of smart grid.
3. Ultra long term sealing:
using imported sealing materials and dual sealing structure, the protection level reaches IP68, the SF6 gas leakage rate is ≤ 0.01%/year, the core component life is 25 years, the cabinet life is 30 years, and the long-term stable operation is achieved.
4. Complex scene adaptation:
Through multiple rigorous tests such as high and low temperature, humidity, salt spray, vibration, and impact, it can adapt to temperatures ranging from -45 ℃ to+80 ℃ and can operate for a long time in extreme environments such as high cold, high temperature, high salt spray, and high vibration.
5. Comprehensive safety protection:
It has complete five prevention locking, pressure release, explosion prevention, and fire prevention functions, and is equipped with personal safety protection devices to prevent personal injury and equipment damage, with safety performance reaching the industry-leading level.
The NSRM-40.5 product has a rated current of 1250A-4000A, a rated insulation level of 185kV/1min relative to ground, 185kV/1min phase to phase, and a partial discharge level of ≤ 3pC. It is suitable for altitudes ≤ 5000m and can meet the needs of high-altitude areas. SF6 gas filling capacity is 15-35kg, equipped with high-precision gas density sensors and online monitoring systems. The operating mechanism adopts a permanent magnet operating mechanism, which has precise action, long service life, and supports automatic reclosing and remote control. The cabinet is made of high-strength stainless steel material, which has excellent anti-corrosion and compressive properties
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Specification
| Item | Unit | Model C | Model F | Model V | Model CB |
| Rated voltage | kV | 40.5 | 40.5 | 40.5 | 40.5 |
| Rated frequency | Hz | 50 | 50 | 50 | 50 |
| Power frequency withstand voltage (phase to phase/port) | kV | 70/80 | 70/80 | 70/80 | 70/80 |
| Lightning impulse withstand voltage | kV | 185/215 | 185/215 | 185/215 | 185/215 |
| 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 advantages of 40.5kV SF6 filling cabinet compared to 35kV products?
With higher voltage levels, larger capacity, and stronger breaking current, it can meet the needs of high-voltage and high-capacity power supply scenarios. It has better insulation performance and safety protection, higher intelligence, and is suitable for high-end scenarios such as large industrial enterprises and hub substations.
How accurate is the AI fault prediction function of the device?
With an accuracy rate of over 95%, by analyzing equipment operating parameters, mechanical characteristics, gas status, and other data, insulation aging, mechanism failures, gas leaks, and other issues can be alerted in advance, providing accurate basis for operation and maintenance, and avoiding unplanned power outages.
Can it be used as supporting equipment for ultra-high voltage distribution networks?
It can be used in the terminal distribution network link of ultra-high voltage distribution network, as a supporting medium and high voltage equipment for ultra-high voltage substations, to ensure the stability of power supply at the end of the distribution network and meet the high reliability requirements of ultra-high voltage distribution network.
What are the acceptance criteria for products?
Complies with domestic and international standards such as GB, IEC, DL, etc. Before leaving the factory, multiple acceptance tests such as airtightness testing, insulation testing, arc extinguishing performance testing, mechanical characteristic testing, and intelligent function testing must be conducted, and a complete test report must be provided.
How to handle and reuse SF6 gas after recovery?
After professional equipment recycling, the purity can reach over 99.9% through drying, filtering, purification and other treatments. It can be reused in SF6 gas filling equipment to achieve resource recycling. The manufacturer can provide recycling and purification services.
How long is the warranty period for the product?
The warranty period is 5 years, during which free maintenance, replacement of faulty components, technical support, and lifelong maintenance services are provided to ensure the long-term stable operation of the equipment.
Related Applications
High voltage distribution systems for large industrial enterprises, metallurgy, chemical, power and other industries meet the demand for large capacity power supply.
Hub substations and regional distribution network core switch stations are key equipment for medium and high voltage distribution networks.
The boosting and distribution processes of new energy bases such as photovoltaics, wind power, and energy storage ensure grid stability.
The construction of distribution networks in extreme environments such as plateaus, high cold, and high salt spray can withstand complex working conditions.
High end commercial parks, data centers, and distribution network equipment for national key projects ensure high reliability power supply.
