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NSGTG-12
NSGTG-12 Solid Insulated Switchgear
The 12kV solid insulated ring main unit is a high-performance equipment designed for high-end heavy-duty and intelligent core nodes in medium voltage distribution networks. It uses ultra-high voltage modified epoxy resin materials and integrated casting technology to fully encapsulate high-voltage conductors, circuit breakers, transformers, and intelligent monitoring modules. It is suitable for demanding requirements such as heavy-duty power supply, ring network core connection, and critical load protection at 12kV voltage levels. The product strictly follows high standards such as GB/T 11022 and IEC 62271 at home and abroad, and has core advantages such as high insulation strength, high load-bearing capacity, intelligent precision control, and extreme working condition adaptation. It can cope with high-end scenarios such as large industrial heavy loads, ultra-high voltage matching, and urban core distribution network hubs, and is a reliable guarantee equipment for the core links of distribution networks.
Features
1. Ultra high insulation redundancy, extremely reliable operation:
using ultra-high voltage modified epoxy resin, breakdown strength ≥ 32kV/mm, insulation margin increased by 30% compared to ordinary products, optimized overvoltage protection design, can effectively resist risks such as lightning overvoltage and operation overvoltage, ensuring uninterrupted operation of core distribution network nodes.
2. Excellent overload carrying capacity:
The rated current can reach 1600A-2000A, the rated short-circuit breaking current can reach 40kA-50kA, and the rated short-time withstand current is 50kA/5s. It can stably carry large industrial heavy-duty equipment and ultra-high voltage supporting loads, cope with frequent start stop and extreme overload impact, and has no hidden danger of heating failure.
3. Intelligent monitoring integration and accurate early warning:
standard partial discharge online monitoring, insulation status evaluation, arc light protection, temperature and humidity accurate monitoring and other modules, which can realize real-time data analysis and fault prediction through 5G+edge computing technology, can early warn potential problems such as insulation degradation and poor contact, and avoid sudden shutdown.
4. Double layer sealing protection, no dead corners in working conditions:
Adopting a double-layer sealing structure and anti-corrosion strengthening process, the protection level reaches IP65, and can operate stably in harsh environments such as extreme temperatures of -45 ℃~+85 ℃, high altitudes (≤ 5200m), strong ultraviolet rays, and strong salt spray, suitable for various high-end complex scenarios.
5. Safety protection loop, eliminating risks:
It has complete five prevention interlocking, rapid fault isolation, grounding protection, and arc suppression functions, which can effectively avoid safety accidents such as arc explosion and leakage caused by personnel misoperation and equipment failure, and build a strong safety line for the core distribution network link.
Execution standards: GB/T 11022, IEC 62271-200, DL/T 1484, GB/T 3804 “3.6kV~40.5kV High Voltage AC Switchgear and Control Equipment”; Rated parameters: rated current 1600A-2000A, rated short-circuit breaking current 40kA-50kA, rated short-time withstand current 50kA/5s, protection level IP65, operation mode supports manual, electric, remote intelligent control; Material configuration: ultra-high voltage modified epoxy resin, high conductivity copper conductor (silver plated), 3.0mm reinforced anti-corrosion cold-rolled steel plate cabinet body; Customized services: can install energy storage emergency modules, partial discharge positioning monitoring, intelligent operation and maintenance platform docking modules, and support high-end customized transformation.
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Specification
| Name | Unit | Parameter | |||
| Rated voltage | kV | 12 | |||
| Rated frequency | Hz | 50 | |||
| Current rating | A | 630 | 1250 | ||
| Rated insulation level | Power frequency withstand voltage | Fracture | kV | 32 | |
| Fireline to Fireline | kV | 28 | |||
| Fireline to ground | kV | 28 | |||
| Withstand voltage for lightning impulses | Fracture | kV | 85 | ||
| Fireline to Fireline | kV | 75 | |||
| Fireline to ground | kV | 75 | |||
| 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 of the product affected in the 5200m high-altitude scenario?
Not affected, the insulation structure and conductor spacing have been optimized for high-altitude and low-pressure environments. Through high-altitude special testing, stable operation can be achieved without additional modifications.
What is the response time and effectiveness of arc light protection?
Response time ≤ 20ms, can quickly detect arc faults and trigger tripping, effectively limiting the release of arc energy and avoiding equipment damage and personnel safety risks caused by arc explosions.
Can intelligent monitoring data be integrated with enterprise private operation and maintenance platforms?
Support, compatible with mainstream private cloud platforms and industrial Internet platforms, provide customized data interfaces, realize seamless connection and unified management and control of monitoring data, and adapt to enterprise intelligent management needs.
What is the service life and replacement cost of insulation components?
The service life of insulation components is ≥ 35 years. After aging, they can be replaced by modular disassembly without the need to disassemble the cabinet as a whole. The quality of original spare parts is guaranteed, and the replacement cost is only about 15% of the total equipment price.
What are the core upgrade points compared to high-end 10kV products?
The core upgrade lies in insulation redundancy, load-bearing capacity, and intelligent monitoring. The 12kV product has higher insulation strength and short-circuit breaking current, adapts to heavy load and core node requirements, and has a more comprehensive intelligent monitoring module that supports fault prediction and precise positioning.
Related Applications
Large scale industrial heavy-duty core power distribution:
Suitable for large-scale industrial heavy-duty scenarios such as metallurgy, building materials, and heavy machinery, where the load power is extremely high and the start stop is frequent, the load capacity and reliability requirements for power distribution equipment are reached to the extreme. The 12kV ring main unit has ultra-high short-circuit breaking current and heavy load adaptability, which can stably support the operation of high-power equipment such as steelmaking furnaces, cement rotary kilns, and large stamping equipment. The intelligent monitoring and arc light protection function can provide real-time warning and quickly handle faults, avoiding long-term production line shutdowns caused by power distribution failures and significantly reducing economic losses for enterprises.
Supporting distribution network for ultra-high voltage power station:
Suitable for supporting distribution network links of ultra-high voltage power stations and regional power grid hubs. As the core node of the power grid, such scenarios require ensuring power supply stability and scheduling flexibility, and there are complex working conditions such as overvoltage and load impact. The product has ultra-high insulation redundancy and impact resistance, which can withstand power grid disturbances in ultra-high voltage supporting scenarios and achieve stable power distribution and coordination scheduling; The intelligent monitoring module can upload real-time operational data, support unified control by the power grid dispatch center, and assist in the safe and efficient operation of the ultra-high voltage power grid.
Urban core distribution network hub nodes:
Adapting to urban core business districts, government centers, transportation hubs and other distribution network hub nodes, such scenarios have dense loads and extremely high power supply importance. Once there is a power outage, it will cause significant public events and economic losses. The 12kV ring main unit has the ability to quickly isolate faults and transfer loads, and can instantly switch power supply paths when faults occur, ensuring uninterrupted power supply for critical loads; The intelligent operation and maintenance function can predict potential faults in advance, reserve sufficient disposal time for operation and maintenance personnel, and build a strong defense line for the security of the city’s core distribution network.
Core power distribution for 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 and stability, ensuring 24-hour uninterrupted operation of server clusters and high load and heat dissipation requirements. The product’s heavy load bearing capacity can stably support high-power loads in data centers. The fully sealed insulation structure avoids faults caused by moisture and dust. The intelligent monitoring and fast switching function can achieve a second level response to faults. Combined with energy storage modules, it ensures power supply continuity and eliminates data loss and business interruption caused by power distribution failures.
High altitude new energy base distribution network:
It is applicable to the distribution network links of high-altitude large-scale photovoltaic and wind power bases on the Qinghai Tibet Plateau and the Yunnan-Guizhou Plateau. Such scenarios have high altitude, low air pressure, severe temperature changes, and strict requirements on equipment insulation performance and weather resistance. The product is designed for high-altitude adaptation and extreme temperature tolerance, which can resist insulation performance degradation and the impact of large temperature differences between day and night in low-pressure environments. Its green and environmentally friendly characteristics are in line with the positioning of new energy bases. At the same time, the intelligent monitoring function can achieve remote control, adapt to the current situation of insufficient operation and maintenance personnel in high-altitude areas, and ensure efficient distribution and grid connection of electricity in new energy bases.
