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NSGTG-24
NSGTG-24 Solid Insulated Switchgear
The 24kV solid insulated ring main unit is a top-level performance equipment designed for the front-end of ultra-high voltage distribution networks, large energy bases, and overseas high-end distribution network scenarios. It uses ultra-high voltage dedicated epoxy resin materials and integrated casting technology to fully seal high-voltage conductors, circuit breakers, precision transformers, and intelligent monitoring units. It strictly follows domestic and foreign ultra-high voltage distribution network standards such as GB/T 11022 and IEC 62271, and is suitable for the front-end connection of ultra-high voltage distribution networks at 24kV voltage levels, heavy-duty distribution in large energy bases, and core distribution needs of overseas high-end projects. The product has the characteristics of ultra-high insulation strength, ultimate bearing capacity, intelligent and precise control, and is a reliable benchmark equipment for the core link of 24kV distribution network.
Features
1. Ultra high voltage insulation upgrade, extremely reliable operation:
using ultra-high voltage dedicated epoxy resin formula, breakdown strength ≥ 35kV/mm, insulation margin increased by 40% compared to similar products, optimized overvoltage protection and insulation structure, can effectively resist the risks of overvoltage and insulation aging in ultra-high voltage distribution network, ensuring uninterrupted operation of core links.
2. Ultimate heavy load bearing, capable of handling extremely large loads:
rated current up to 2000A-2500A, rated short-circuit breaking current 50kA-63kA, rated short-time withstand current 63kA/5s, capable of stably carrying front-end loads of ultra-high voltage distribution networks and heavy-duty equipment in large energy bases, capable of handling extreme overload and grid impact, without heating or fault hazards.
3. Intelligent monitoring with precision and efficient fault prediction:
Equipped with partial discharge positioning monitoring, insulation status assessment, arc light protection, and temperature rise precision monitoring modules, this system uses 5G+AI data analysis technology to achieve fault prediction and precise positioning, with a response time of ≤ 15ms, providing ultimate support for the operation and maintenance of ultra-high voltage distribution networks.
4. Suitable for 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 -50 ℃~+90 ℃ extreme temperature, high altitude (≤ 5500m), strong salt spray, strong ultraviolet radiation, etc. It is suitable for multiple complex scenarios of ultra-high voltage distribution network.
5. Closed loop safety protection and complete risk elimination:
equipped with comprehensive 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 strong safety defense line for ultra-high voltage distribution network.
Execution standards: GB/T 11022, IEC 62271-200, DL/T 1484, GB/T 3804; Rated parameters: rated current 2000A-2500A, rated short-circuit breaking current 50kA-63kA, rated short-time withstand current 63kA/5s, protection level IP66, operation mode supports manual, electric, remote intelligent control; Material configuration: Ultra high voltage dedicated 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 | 24 | |||
| 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
Is the insulation performance stable when the product is used in ultra-high voltage scenarios at an altitude of 5500m?
Stable and reliable. The insulation structure and conductor spacing have been specially optimized for the 5500m 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?
It has functions such as AI fault prediction, trend analysis of operation data, automatic generation of operation and maintenance strategies, and remote issuance of operation and maintenance instructions, which can significantly reduce the dependence on manual operation and maintenance and achieve intelligent operation and maintenance of ultra-high voltage distribution networks.
What are the core upgrade points compared to high-end 22kV products?
The core upgrade focuses on insulation strength, load-bearing capacity, and intelligent operation and maintenance. The 24kV product is suitable for ultra-high voltage front-end 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 to ensure installation accuracy and operational stability, without the need for additional special equipment.
Related Applications
Front end distribution network of ultra-high voltage converter station:
Adapting to the front-end distribution network link of ultra-high voltage converter stations, this type of scenario serves as the core of the connection between ultra-high voltage power grids and medium voltage distribution networks, with the ultimate requirements for equipment insulation strength, load-bearing capacity, and stability. The upgraded design of the ultra-high voltage insulation of the 24kV ring main unit can resist the overvoltage impact of the converter station, and the ultimate heavy load bearing capacity can stably bear the front-end load of the converter station. The intelligent AI 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 energy reserve base distribution network:
Suitable for the distribution network links of energy reserve bases such as large oil reserves, natural gas reserve bases, and pumped storage power stations. Such scenarios have extremely high load power, extremely high safety requirements, and are often located in complex outdoor environments. The ultimate heavy-duty bearing capacity of the product can stably support the operation of high-power equipment such as oil pumps, compressors, and generator sets. The IP66 protection and anti-corrosion strengthening design can resist outdoor extreme environments and corrosive media erosion. The perfect safety protection function can eliminate safety hazards caused by electric sparks and insulation faults, ensuring the safe operation of the energy reserve base.
Overseas ultra-high voltage distribution network high-end project:
Suitable for high-end projects in ultra-high voltage distribution networks in Europe, North America, and other regions, this type of scenario uses a voltage level of 24kV and has strict requirements for equipment performance, certification, and intelligence level. The product complies with international standards and certifications for ultra-high voltage distribution networks. The AI intelligent operation and maintenance module can adapt to overseas unmanned operation and maintenance needs, and the full working condition adaptation capability can cope with different climate environments, helping high-end projects in overseas ultra-high voltage distribution networks to land and ensuring stable power supply in local core areas.
Core power distribution for ultra large data centers:
Suitable for the core power distribution process of ultra large data centers, this type of scenario requires strict requirements for power supply reliability, stability, and carrying capacity, ensuring uninterrupted operation of hundreds of thousands of server clusters 24 hours a day. The product’s ultimate overload carrying capacity can stably support high-power loads in data centers. The ultra-high voltage insulation performance can avoid insulation failures caused by moisture and dust. The AI fault prediction and fast switching function can achieve a second level response to faults. Combined with the energy storage system, it ensures power supply continuity and eliminates data loss and business interruption caused by distribution failures.
High altitude ultra large photovoltaic base distribution network:
Suitable for the distribution network of ultra large photovoltaic bases at altitudes above 5000m. Such scenarios involve high altitude, low air pressure, drastic temperature changes, and high load power, with strict requirements for equipment weather resistance and insulation performance. The product is designed to adapt to high altitudes of 5500m and withstand extreme temperatures, which can resist insulation performance degradation and huge temperature differences between day and night in low-pressure environments. Its ultimate bearing capacity can stably collect photovoltaic energy. The intelligent remote operation and maintenance function is suitable for the shortage of operation and maintenance personnel in high-altitude areas, ensuring efficient distribution and grid connection of electricity in high-altitude photovoltaic bases.
