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NSGTG-40.5
NSGTG-40.5 Solid Insulated Switchgear
The 40.5kV solid insulated ring main unit is a top-level core equipment for domestic ultra-high voltage distribution networks, designed specifically for ultra-high voltage converter stations, large energy hubs, and overseas ultra-high voltage high-end projects. It uses ultra-high voltage top-level epoxy resin materials and integrated casting technology, fully sealed and packaged high voltage conductors, circuit breakers, precision transformers, and intelligent monitoring units, strictly following domestic and foreign ultra-high voltage top-level standards such as GB/T 11022 and IEC 62271, and is suitable for the extremely demanding requirements of ultra-high voltage front-end connection, large energy hub distribution, and top-level industrial heavy-duty distribution under the 40.5kV voltage level. The product has the characteristics of ultra-high insulation strength, ultimate bearing capacity, and safety protection loop, and is a reliable benchmark equipment for the core link of 40.5kV level distribution network.
Features
1. Top level insulation upgrade, ultimate reliability:
using ultra-high voltage top-level epoxy resin formula, breakdown strength ≥ 40kV/mm, insulation margin increased by 50% compared to similar products, optimized overvoltage protection and insulation structure, can effectively resist overvoltage and insulation aging risks in ultra-high voltage supporting scenarios, ensuring uninterrupted operation of core links.
2. With a super large carrying capacity, it can cope with extreme loads:
the rated current can reach 2500A-3150A, the rated short-circuit breaking current is 63kA-80kA, and the rated short-time withstand current is 80kA/5s. It can stably carry ultra-high voltage front-end loads and large energy hub heavy-duty equipment, cope with extreme overload and grid impact, and has no heating or fault hazards.
3. Intelligent monitoring and precision, AI operation and maintenance empowerment:
Standard configuration includes partial discharge positioning monitoring, insulation status assessment, arc light protection, and temperature rise precision monitoring modules. Through 5G+AI data analysis technology, fault prediction, trend analysis, and automatic generation of operation and maintenance strategies are achieved, with a response time of ≤ 15ms, providing ultimate support for the operation and maintenance of ultra-high voltage core links.
4. Top level protection under all working conditions, worry free in extreme environments:
adopting three-layer sealing and anti-corrosion strengthening technology, the protection level reaches IP66, and can operate stably in harsh environments such as -55 ℃~+95 ℃ extreme temperature, high altitude (≤ 5800m), strong salt spray, strong ultraviolet radiation, etc. It is suitable for various complex scenarios such as ultra-high voltage and energy hubs.
5. Closed loop safety protection and complete risk elimination:
equipped with perfect five prevention interlocking, rapid fault isolation, arc suppression, and grounding protection functions, it can effectively avoid safety accidents such as arc explosion and leakage caused by personnel misoperation and equipment failure, and build a solid safety defense line for the core links of ultra-high voltage.
Execution standards: GB/T 11022, IEC 62271-200, DL/T 1484, GB/T 3804; Rated parameters: rated current 2500A-3150A, rated short-circuit breaking current 63kA-80kA, rated short-time withstand current 80kA/5s, protection level IP66, operation mode supports manual, electric, remote intelligent control; Material configuration: Ultra high voltage top-level epoxy resin, high conductivity purple copper conductor (silver plated thickened treatment), 3.5mm reinforced anti-corrosion cabinet body; Customized services: AI operation and maintenance modules, energy storage emergency dispatch, ultra-high voltage insulation monitoring can be installed, supporting high-end intelligent distribution network platform docking.
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Specification
| Name | Unit | Parameter | |||
| Rated voltage | kV | 40.5 | |||
| Rated frequency | Hz | 50 | |||
| Current rating | A | 630 | 1250 | ||
| Rated insulation level | Power frequency withstand voltage | Fracture | kV | 80 | |
| Fireline to Fireline | kV | 70 | |||
| Fireline to ground | kV | 70 | |||
| Withstand voltage for lightning impulses | Fracture | kV | 215 | ||
| Fireline to Fireline | kV | 185 | |||
| Fireline to ground | kV | 185 | |||
| 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
Is the insulation performance stable when the product is used in a 5800m high altitude ultra-high voltage scenario?
Stable and reliable. The insulation structure and conductor spacing have been specially optimized for the 5800m high-altitude and low-pressure environment. Through joint testing at ultra-high voltage and high altitude, the insulation performance has not deteriorated and can operate stably directly.
What are the core functions of the AI operation and maintenance module?
Equipped with AI fault prediction, trend analysis of operational data, automatic generation of operation and maintenance strategies, remote issuance of operation and maintenance instructions, multi-dimensional data traceability and other functions, it can significantly reduce the dependence on manual operation and maintenance, and achieve intelligent operation and maintenance of ultra-high voltage core links.
What are the core upgrade points compared to high-end 35kV products?
The core upgrade focuses on insulation strength, load-bearing capacity, and intelligent operation and maintenance. 40.5kV is suitable for ultra-high voltage core scenarios, with higher insulation margin and short-circuit breaking current. The AI operation and maintenance module is more accurate and can cope with more stringent ultra-high voltage conditions.
What is the response time and protection effect of the product's arc light protection?
With a response time of ≤ 15ms, it can quickly detect arc faults and trigger tripping and arc suppression, effectively limiting the release of arc energy, avoiding equipment damage and personnel safety risks caused by arc explosions, and achieving industry-leading protection effects.
Are there any special requirements for the transportation and installation of the product?
Transport using special shock resistant wooden boxes for ultra-high voltage equipment, equipped with positioning and buffering devices; Installation requires leveling and reinforcing the cement foundation. The manufacturer provides a professional technical team for on-site debugging and calibration to ensure installation accuracy and operational stability, without the need for additional special equipment.
Related Applications
Core supporting distribution network of ultra-high voltage converter station:
The core supporting distribution network link that adapts to ultra-high voltage converter stations, such scenarios serve as the connection hub between ultra-high voltage power grids and ultra-high voltage distribution networks, with the ultimate requirements for equipment insulation strength, bearing capacity, and stability. The top-level insulation design of the 40.5kV ring main unit can resist the overvoltage impact of the converter station, and the ultimate heavy load bearing capacity can stably bear the core load of the converter station. The AI intelligent operation and maintenance module can predict faults in real time, providing core support for the safe and efficient operation of the ultra-high voltage converter station, and ensuring the stable conversion and transmission of ultra-high voltage electrical energy.
Large scale nuclear power base energy hub distribution network:
Suitable for the energy hub distribution network of large nuclear power bases, this type of scenario has extremely high load power and safety requirements, requiring stable ultra-high voltage power supply for nuclear power units and auxiliary systems, and strict requirements for equipment weather resistance and protection. The product’s ultimate heavy-duty bearing capacity can stably support the operation of high-power loads such as auxiliary equipment and cooling systems of nuclear power units. The IP66 protection and anti-corrosion reinforcement design can withstand extreme outdoor environments, and the perfect safety protection function can eliminate safety hazards caused by electric sparks and insulation failures, ensuring the safe and stable operation of nuclear power bases.
Overseas ultra-high voltage high-end energy project distribution network:
Suitable for distribution networks of ultra-high voltage high-end energy projects in Europe, North America, and other regions, this type of scenario uses a voltage level of 40.5kV, with strict requirements for equipment performance, certification, and intelligence level. The product meets the top international standards and certifications for ultra-high voltage, and the AI intelligent operation and maintenance module can adapt to overseas unmanned operation and maintenance needs. The full working condition adaptation capability can cope with different climate environments, helping overseas ultra-high voltage high-end energy projects to land and ensuring stable power supply for local core energy hubs.
Core distribution network of large-scale pumped storage power stations:
Suitable for the core distribution network of large-scale pumped storage power stations, this type of scenario serves as an energy regulation hub with severe load fluctuations and frequent vibrations, requiring extremely high equipment carrying capacity, anti vibration, and stability. The product is designed with ultimate heavy-duty bearing and anti vibration capabilities, which can stably support the operation of high-power equipment such as water pumps, turbines, and generator sets, and cope with severe load fluctuations and vibration impacts. The AI intelligent monitoring function can capture equipment abnormalities in real time, ensuring efficient regulation of grid loads in pumped storage power stations and achieving peak shaving and valley filling of electrical energy.
