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NSRM-6.6
NSRM-6.6 SF6 gas-insulated ring main unit
NSRM-6.6 gas insulated enclosed metal switchgear is designed for 6.6KV special industrial and overseas scenarios. It is a specialized distribution equipment for high-risk environments such as mines, oil fields, and offshore platforms, and is also a main product for overseas markets such as Southeast Asia and the Middle East. It solves the problem of power supply safety under harsh working conditions with its explosion-proof and extreme weather resistant characteristics. The equipment adopts an explosion-proof modular design, and all live parts are completely sealed inside a stainless steel shell. It can operate reliably in extreme environments such as gas, salt spray, and strong ultraviolet radiation, meeting explosion-proof standards such as IEC 60079, and providing an inherently safe power distribution solution for high-risk scenarios.
Features
1. High safety and explosion-proof, extremely adaptable to harsh environments
2. Stable core performance and guaranteed insulation protection
3. High adaptability to overseas localization, meeting the needs of the international market
4. Convenient operation and low cost, suitable for overseas project management
The actual working conditions have been fully verified, and the product reputation is supportedThe NSRM-6.6 inflatable sulfur hexafluoride fully insulated ring main unit has passed the Ex d IIB T4 explosion-proof certification of the National Explosion proof Testing Center. The sealing structure has been optimized specifically for the humid and high dust environment underground in mines, with a protection level of IP67. The equipment is equipped with SF6 gas leakage monitoring and automatic gas replenishment device, which can maintain stable insulation performance even at extreme temperatures ranging from -40 ℃ to 60 ℃. For the localization needs of overseas projects, this device supports both imperial and metric installation interfaces and can adapt to cable specifications in different countries. At the same time, it provides a multilingual human-machine interface, supports remote diagnosis and OTA upgrades, significantly reducing the operation and maintenance costs of overseas projects. At present, it has been widely applied in projects such as coal mines in Indonesia and oil fields in the United Arab Emirates, with a cumulative operating time of over 100000 hours.
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Specification
| Item | Unit | Model C | Model F | Model V | Model CB |
| Rated voltage | kV | 6.6 | 6.6 | 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
What scenarios is the NSRM-6.6 device mainly suitable for?
Designed specifically for 6.6KV special industrial and overseas scenarios, with core adaptability to high-risk environments such as mines, oil fields, and offshore platforms. It is also the main power distribution equipment for overseas markets such as Southeast Asia and the Middle East.
What extreme environments can this device handle?
It can withstand harsh working conditions such as gas, salt spray, strong ultraviolet radiation, high dust, and humidity, and is suitable for extreme temperature ranges of -40 ℃~60 ℃. It can operate reliably in complex and high-risk environments.
How to ensure the insulation performance and operational safety of equipment?
Adopting SF6 gas full insulation design, built-in SF6 gas leakage monitoring and automatic gas replenishment device, continuously stable insulation performance; All live parts are sealed in a stainless steel shell, and the explosion-proof modular design achieves intrinsic safety.
What are the localized adaptation designs for equipment in overseas projects?
Supports dual installation interfaces for both imperial and metric systems, and can adapt to cable specifications from different countries; Equipped with a multilingual human-machine interface that meets the needs of localized overseas use.
Is overseas project operation and maintenance convenient? How to control costs?
Supports remote diagnosis and OTA upgrade functions, eliminating the need for frequent on-site operations, significantly reducing the manpower and time costs of overseas project operations, and simplifying the operation and maintenance process.
What are the practical project application cases of the equipment? How is the operational performance?
It has been widely applied in projects such as coal mines in Indonesia and oil fields in the United Arab Emirates, with a cumulative operating time of over 100000 hours. Its performance has been tested under real high-risk conditions, and its stability and practicality have been verified by the market.
What are the characteristics of the device's structural design?
Adopting explosion-proof modular design, the overall structure is compact, and the live parts are fully sealed and protected, which not only ensures safety but also facilitates installation, maintenance, and expansion.
Related Applications
Application in Southeast Asian coal mines
Suitable for the common problems of moisture, high dust, and high gas concentration underground, and the power supply safety is directly related to the continuity of mining operations and personnel safety, with extremely high requirements for equipment explosion-proof, dustproof, and moisture-proof performance.
Application in Middle Eastern oil fields
Suitable for Middle Eastern oil fields that are often exposed to high temperatures and strong ultraviolet radiation. Some offshore oil fields also face salt spray erosion, and the oil field site is remote, making it difficult to allocate operation and maintenance personnel. The requirements for equipment high temperature resistance, corrosion resistance, and remote operation and maintenance capabilities are strict.
Application in overseas chemical industrial parks
Suitable for chemical industrial parks with flammable and explosive gases, corrosive media, and some parks located in tropical or cold regions, which need to cope with extreme temperatures and complex media erosion. At the same time, overseas parks must comply with international standards such as IEC and local installation requirements.
Application of Tropical Coastal Power Stations
Suitable for tropical coastal power stations that are significantly affected by high temperatures, high humidity, and salt spray, with equipment prone to corrosion and insulation aging issues. As the core power supply hub, the power station has extremely high requirements for distribution reliability and maintenance convenience.
