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NSGTG-22
NSGTG-22 Solid Insulated Switchgear
The 22kV solid insulated ring main unit is a high-performance equipment designed for rail transit, overseas specific distribution networks, and domestic high-end industrial special needs. It adopts electromagnetic compatibility strengthening and anti vibration optimization epoxy resin integrated casting technology, fully sealed and encapsulated high-voltage core components, strictly following domestic and foreign standards such as IEC 62271 and EN 50124, and is suitable for rail transit traction auxiliary power supply, overseas high-end distribution networks, and industrial heavy-duty special distribution needs under the 22kV voltage level. The product has the characteristics of strong electromagnetic compatibility, excellent vibration resistance, high degree of customization, and reliable operation, and is the core guarantee equipment for 22kV distribution network in special scenarios.
Features
1. Electromagnetic compatibility enhancement, suitable for rail transit:
Optimize the electromagnetic shielding structure and wiring design of the cabinet, pass EN 50124 electromagnetic compatibility certification, can resist strong electromagnetic interference generated by rail transit traction systems, ensure stable operation of equipment in strong electromagnetic environments, and eliminate signal interference hazards.
2. Excellent anti vibration performance, suitable for complex working conditions:
The cabinet adopts a reinforced anti vibration structure, and key components are equipped with buffering devices. It has passed the anti vibration level test of rail transit and can operate stably under frequent vibration and impact conditions, adapting to severe vibration scenarios such as rail transit and mining.
3. Cross scenario customization and adaptation, with a wide range of requirements:
Protection levels, operating mechanisms, monitoring modules can be customized according to the special needs of rail transit, overseas distribution network, and industry. It supports specialized modifications such as traction auxiliary power supply interfaces, multilingual controllers, and explosion-proof, and is suitable for multiple special scenarios.
4. Fast switching response to ensure critical loads:
Optimize the design of the switch mechanism, with a response time of ≤ 30ms for opening and closing, supporting rapid switching of emergency backup power supply, ensuring uninterrupted power supply for critical loads such as rail transit and important industries, and reducing downtime losses due to faults.
5. Extended insulation life and controllable operation and maintenance costs:
using anti-aging and arc resistant epoxy resin formula, the service life of insulation components is ≥ 35 years, combined with modular design, easy maintenance, maintenance cycle is extended by 3 times compared to equipment of the same level, and the operation and maintenance costs throughout the life cycle are reduced by more than 35%.
Execution standards: IEC 62271-200, EN 50124, GB/T 11022, CE/T Ü V certification; Rated parameters: rated current 1250A-1600A, rated short-circuit breaking current 31.5kA-40kA, rated short-time withstand current 40kA/4s, protection level IP55-IP65, suitable for 50Hz/60Hz dual frequency; Material configuration: arc resistant and anti-aging epoxy resin, oxygen free copper conductor, reinforced anti vibration cabinet body; Customized services: support for rail transit traction auxiliary interfaces, electromagnetic shielding upgrades, multilingual controllers, and anti vibration reinforcement improvements.
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Specification
| Name | Unit | Parameter | |||
| Rated voltage | kV | 22 | |||
| Rated frequency | Hz | 50 | |||
| Current rating | A | 630 | 1250 | ||
| Rated insulation level | Power frequency withstand voltage | Fracture | kV | 60 | |
| Fireline to Fireline | kV | 50 | |||
| Fireline to ground | kV | 50 | |||
| Withstand voltage for lightning impulses | Fracture | kV | 145 | ||
| Fireline to Fireline | kV | 125 | |||
| Fireline to ground | kV | 125 | |||
| Rated short-circuit interrupting current(1s) | kA | 20 | 25 | ||
| Rated short-time withstand current(4s) | kA | 20 | 25 | ||
| Rated peak withstand current(1p) | kA | 50 | 63 | ||
| Rated short-circuit closing current (peak)(1ma) | kA | 50 | 63 | ||
| Enclosure rating | IP4X | ||||
| Operating mode | Spring-loaded energy storage | ||||
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FAQs
Can the product adapt to the electromagnetic environment of traction auxiliary power supply scenarios in rail transit?
Yes, it has passed the EN 50124 electromagnetic compatibility certification. The electromagnetic shielding structure can effectively resist strong electromagnetic interference from the traction system, and will not interfere with the rail transit signal system, adapting to the traction auxiliary power supply requirements.
What is the anti vibration level and what vibration conditions can it cope with?
The anti vibration level meets the IEC 60068-2-6 standard, and can cope with vibration impacts with frequencies of 10Hz-150Hz and accelerations of 2g. It is suitable for severe vibration conditions such as rail transit train operation and mining equipment operation.
Can the 22kV distribution network frequency requirements of different countries be adapted in overseas projects?
Support, customizable 50Hz/60Hz dual frequency adaptation version, targeted optimization of core electrical component parameters, can be integrated into overseas 22kV distribution network systems with different frequencies without additional adjustments.
Can the fast switching function of the product meet the emergency backup power supply requirements?
Fully satisfied, with a response time of ≤ 30ms for opening and closing, capable of achieving second level switching between main and backup power sources, ensuring uninterrupted power supply for critical loads such as rail transit and important industries, and no voltage fluctuations during the switching process.
What is the difficulty and cost of replacing insulation components after aging?
Easy to replace, modular design allows for quick disassembly and replacement of aging insulation components without the need for overall disassembly of the cabinet; The original spare parts supply is sufficient, and the replacement cost is only about 12% of the total equipment price. After replacement, the original performance of the equipment can be restored.
Related Applications
Overseas high-speed rail traction auxiliary power supply:
Suitable for traction auxiliary power supply scenarios of high-speed railways in overseas regions such as Europe and Southeast Asia. Such scenarios have strong electromagnetic interference, frequent vibration and other working conditions, which require extremely high electromagnetic compatibility, anti vibration and fast switching ability of the equipment. The electromagnetic compatibility enhancement design of the 22kV ring main unit can resist electromagnetic interference from the traction system. The enhanced anti vibration structure can cope with the vibration impact of train operation. The fast switching function can ensure uninterrupted power supply for traction auxiliary equipment and signal system. The multilingual controller is adapted to the operating habits of overseas operation and maintenance personnel, and helps to facilitate the landing of overseas high-speed railway projects.
Domestic urban rail transit supporting power distribution:
Suitable for supporting power distribution in domestic urban rail transit such as subways and light rails. Such scenarios are located in underground tunnels or elevated platforms, with humid environments, frequent vibrations, and strict requirements for power supply reliability. The anti vibration and moisture-proof design of the product can adapt to tunnel moisture and train vibration conditions. The electromagnetic shielding function avoids interference with the rail transit signal system, and the fast switching ability can cope with sudden power failures, ensuring the stable operation of subway lighting, ventilation, and traction auxiliary equipment, and providing support for the safe operation of rail transit.
Overseas high-end industrial park distribution network:
Suitable for high-end industrial parks (such as precision manufacturing and semiconductor parks) in Europe, North America, and other regions, this type of scenario uses a 22kV voltage level and has extremely high requirements for equipment stability, electromagnetic compatibility, and environmental protection. The product is designed with dual standard compatibility and electromagnetic shielding, which can be integrated into the local distribution network system to avoid interfering with the operation of precision equipment. Its weather resistance can adapt to different climate environments, and its low noise and environmental protection characteristics meet the green production needs of high-end parks, ensuring the continuous and stable operation of precision manufacturing production lines.
Large scale underground and open-pit mine distribution network:
Suitable for underground chambers and open-pit mine distribution network scenarios in large metal mines and coal mines, with severe vibration, high humidity and dust, and customized voltage level of 22kV. The reinforced anti vibration structure of the product can resist the vibration and impact of mining equipment, and the IP65 protection and sealing design can isolate moisture and dust erosion. The complete safety protection function can ensure the safety of underground workers, provide stable power supply for mining equipment, ventilation and drainage systems, and transportation equipment, and avoid safety risks caused by mining power supply failures.
