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NSRM-6
NSRM-6 SF6 gas-insulated ring main unit
NSRM-6 gas insulated enclosed metal switchgear focuses on 6KV industrial distribution network scenarios and is the core distribution equipment for medium and large industrial enterprises such as metallurgy, building materials, and chemical industry. It provides stable power support for continuous production with high reliability, anti harmonic interference capability, and adaptability to the fluctuation characteristics of industrial loads. The equipment adopts a reinforced modular design, supporting a mixed configuration of fixed and expandable units. It can be flexibly expanded according to the needs of workshop expansion, production line upgrading, etc., avoiding the pain point of traditional switchgear that is “one-time investment, lifelong restriction”.
Features
1. Ultra high reliability, suitable for harsh industrial conditions:
It has passed the short-circuit withstand and temperature rise tests of the National High Voltage Electrical Testing Center, with a rated short-time withstand current of up to 20kA. It can easily withstand the surge current during industrial motor start-up, eliminating equipment failures caused by current surges. The cabinet body adopts a special anti-corrosion coating, which can operate stably in harsh industrial environments with high dust and corrosion. The design life is up to 30 years, greatly reducing the frequency of equipment replacement and maintenance costs.
2. Strong anti-interference ability and protection of precision equipment:
In response to the problem of harmonic pollution in industrial sites, the internal busbar adopts a full screen shielding design, which can effectively block electromagnetic interference, avoid the influence of voltage and electromagnetic fluctuations on precision control equipment, and ensure the stable operation of production control systems, especially suitable for industrial scenes with high degree of automation.
3. Intelligent operation and maintenance to improve management efficiency:
Equipped with dual interfaces for local status display and remote communication, compatible with mainstream communication protocols such as Modbus and IEC61850, it can seamlessly integrate into enterprise energy management systems. Realize real-time online monitoring of key parameters such as current, temperature, SF6 gas pressure, without the need for manual on-site inspections, early warning of equipment abnormalities, reducing operation and maintenance labor costs, and achieving refined power management.
4. Flexible expansion and adaptation to capacity upgrades:
Modular design breaks the limitations of traditional equipment structures, and fixed units and expandable units can be combined as needed. When the workshop expands or the production line adds new loads in the later stage, there is no need to replace the equipment as a whole, only the corresponding units need to be expanded, reducing duplicate investment and adapting to the distribution needs of enterprises at different stages of development.
The NSRM-6 inflatable sulfur hexafluoride fully insulated ring main unit has passed the short-circuit withstand and temperature rise test of the National High Voltage Electrical Testing Center, with a rated short-time withstand current of 20kA, and can withstand the surge current during the start-up of industrial motors. In response to the harmonic pollution problem in industrial sites, the internal busbar of the equipment adopts a shielded design, effectively reducing electromagnetic interference and protecting precision control equipment. To meet the inspection needs of industrial enterprises, the equipment is equipped with local status display and remote communication interfaces, supporting protocols such as Modbus and IEC61850, and can be connected to enterprise energy management systems to achieve real-time online monitoring of current, temperature, and SF6 gas pressure. At the same time, the cabinet body is coated with anti-corrosion coating, which can operate stably in industrial environments with high dust and corrosion, with a design life of up to 30 years.
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Specification
| Item | Unit | Model C | Model F | Model V | Model CB |
| Rated voltage | kV | 6 | 6 | 6 | 6 |
| Rated frequency | Hz | 50 | 50 | 50 | 50 |
| Power frequency withstand voltage (phase to phase/port) | kV | 20/23 | 20/23 | 20/23 | 20/23 |
| Lightning impulse withstand voltage | kV | 40/46 | 40/46 | 40/46 | 40/46 |
| 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
Is the SF6 gas in the NSRM-6 charging cabinet safe and is there any risk of leakage?
The equipment adopts a fully enclosed sealing structure, matched with high-precision gas seals, which can effectively prevent SF6 gas leakage. At the same time, the equipment is equipped with a real-time monitoring function for SF6 gas pressure. Once the pressure falls below the safety threshold, a warning signal will be immediately issued for operation and maintenance personnel to handle it in a timely manner, balancing safety and stability.
What is the maintenance cycle for this device and is it difficult to maintain?
The equipment has a designed lifespan of 30 years, excellent sealing performance, and does not require frequent maintenance on a daily basis. The regular maintenance cycle can be extended to 1-2 years. And it supports remote online monitoring, and in most working conditions, there is no need for on-site dismantling and inspection. Only regular verification of monitoring data and cleaning of the cabinet body are required, with low maintenance difficulty and significant savings in labor costs.
Will the expansion in the later stage affect the normal power supply of the existing production line?
No. The equipment adopts modular independent design, and the expansion unit does not interfere with the existing operating unit. It can be connected and debugged without power outage, avoiding production line shutdown caused by expansion and ensuring production continuity.
Can the device adapt to the existing energy management system of the enterprise?
Sure. The device is compatible with mainstream communication protocols such as Modbus and IEC61850, and can be directly connected to the existing energy management platform of the enterprise without the need for additional conversion modules, achieving seamless data integration and quickly integrating into the enterprise’s intelligent management system.
Is the protection level of the equipment sufficient in highly corrosive and dusty environments?
The equipment cabinet body adopts a special anti-corrosion coating, with a protection level of up to industrial high standards, which can effectively resist dust accumulation and corrosive gas erosion. After rigorous environmental testing and verification, it can operate stably in harsh environments such as metallurgy and chemical industry for a long time without the need for additional protective devices.
Related Applications
Metallurgical industry: Suitable for high load, strong impact, and high dust conditions in steel and non-ferrous metal smelting workshops, providing stable power distribution for core devices such as smelting furnaces and rolling equipment, resisting motor start-up impact and harmonic interference, and ensuring continuous smelting production.
Building materials industry: Suitable for production enterprises such as cement, glass, ceramics, etc., it can operate stably in workshop environments with high dust and high temperature difference, providing reliable power support for crushers, kilns, molding equipment, etc., and adapting to load changes caused by capacity fluctuations.
Chemical industry: Resistant to harsh environments such as corrosive gases and humidity, providing power for equipment such as reaction vessels, conveying pumps, and precision testing instruments. The fully shielded design can avoid electromagnetic interference affecting the accuracy of chemical process control, ensuring production safety and process stability.
Industrial park distribution network: As the core equipment of distributed distribution in industrial parks, it can be flexibly expanded according to the settlement of enterprises in the park, realizing multi enterprise power zoning control. The intelligent monitoring function facilitates unified management by the park operation and maintenance team, and improves overall distribution efficiency.
