NSGTG-6

NSGTG-10 Solid Insulated Switchgear

The 10kV solid insulated ring main unit is a benchmark equipment in the domestic medium voltage distribution network field, designed for mainstream scenarios such as urban distribution network, industrial production, and new energy grid connection. It adopts modified epoxy resin integrated casting technology and fully seals core components such as high-voltage conductors, load switches, circuit breakers, and transformers, completely eliminating SF6 gas and insulating oil. The product strictly complies with national standards such as GB/T 11022 and DL/T 1484, and is suitable for all scenarios of ring network power supply, radiation power supply, interconnection power supply, and terminal distribution under 10kV voltage level. It has core characteristics such as stable operation, environmental protection, high efficiency, and intelligent convenience. It is the core preferred equipment for modern distribution network upgrading and transformation, and can fully meet the construction needs of “safety, green, and intelligence” in domestic distribution networks.

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Features

1. Universal adaptation to national standards, with a wide range of scenarios:

As the mainstream voltage level equipment for domestic medium voltage distribution networks, it perfectly adapts to all types of 10kV distribution network scenarios such as urban, industrial, rural, and new energy, without the need for customized adjustment of core structures. It is easy to select and can significantly shorten project procurement and deployment cycles.

2. Iterative insulation performance and sufficient safety redundancy:

Made of aging resistant modified epoxy resin material with a breakdown strength of ≥ 28kV/mm, optimized insulation spacing design can effectively resist risks such as overvoltage, condensation, and pollution, with insulation failure rates approaching zero, ensuring continuous operation of the distribution network.

3. Intelligent operation and maintenance linkage, management efficiency upgrade:

Equipped with intelligent monitoring unit and IEC 61850 communication protocol, it can seamlessly integrate into the distribution network automation system, achieve real-time collection and remote control of switch status, temperature and humidity, and partial discharge data, support automatic fault location and isolation, and adapt to unmanned operation and maintenance mode.

4. Balancing environmental protection and economy, with optimal lifecycle costs:

no SF6 greenhouse gas emissions and insulation oil leakage risks, in line with the “dual carbon” policy; Modular design reduces maintenance and expansion costs in the later stages, with a service life of ≥ 20 years and a comprehensive cost reduction of over 25% over the entire lifecycle compared to traditional gas cabinets.

5. Outstanding anti-interference ability, suitable for complex power grids:

optimized conductor and switch arc extinguishing structure, rated short-circuit breaking current up to 31.5kA-40kA, able to withstand power grid impact and frequent load fluctuations, stable operation under complex working conditions such as power grid harmonics and voltage dips, suitable for industrial heavy loads and urban core distribution network needs.

Execution standards: GB/T 11022 “Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards”, DL/T 1484 “Technical Conditions for 12kV Solid Insulated Ring Main Unit”, GB/T 3906 “3.6kV~40.5kV AC Metal Enclosed Switchgear and Control Equipment”; Rated parameters: rated current 800A-1600A, rated short-time withstand current 40kA/4s, protection level IP4X-IP65, operation mode supports manual, electric, and remote control; Material configuration: Modified weather resistant epoxy resin, high conductivity copper conductor (tin plated), 2.5mm cold-rolled steel plate anti-corrosion cabinet body; Customized service: can be equipped with arc protection, precise measurement, and energy storage backup modules, supporting personalized customization of cabinet size and color.

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    Specification

    Name Unit Parameter
    Rated voltage kV 10
    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

    FAQs

    Can 10kV products and 12kV products be mixed in the same distribution network system?

    It is not recommended to mix them. The insulation parameters and conductor specifications of the two should be designed accordingly. Mixing them will reduce insulation redundancy and operational stability. Therefore, the selection should be based on the rated voltage of the system.

    What is the accuracy of product partial discharge monitoring, and does it support threshold customization?

    The accuracy of partial discharge monitoring reaches 1pC, and the warning threshold can be customized through the cloud platform. When the threshold is exceeded, it will automatically trigger sound and light and remote alarms, making it easy to accurately control the equipment status.

    Do outdoor installations require additional protective measures?

    Standard IP54 protection level, no additional protection required for outdoor installation; If used in coastal and high dust scenarios, it can be upgraded to IP65 protection to resist salt spray and dust erosion.

    Is power outage operation required for later expansion?

    Supports live expansion, modular units can be independently disassembled and assembled, only the corresponding expansion units need to be isolated, without affecting the overall power supply of the distribution network, greatly reducing power outage losses.

    Is there any difference in installation difficulty compared to traditional SF6 ring main units?

    The installation difficulty is lower, the weight is 30% lighter than SF6 cabinets, there is no need for gas filling and leak detection processes, the basic construction is simple, and 2-3 people can complete daily installation and commissioning.

    Related Applications

    Upgrading the distribution network in the urban core area:
    Adapt to core distribution network scenarios such as urban CBD and old city renovation, which have high load density, extremely high power supply reliability requirements, limited distribution space, and strict environmental protection requirements. The compact structure of the 10kV ring main unit can adapt to small spaces such as underground distribution rooms and building mezzanines, and the intelligent operation and maintenance function can achieve unmanned operation, which meets the needs of urban distribution network automation management; There is no risk of environmental pollution, which is in line with the positioning of urban green development. At the same time, the ability to quickly isolate faults can minimize the scope of power outages, ensuring continuous electricity supply for commercial offices and residents’ lives, and improving the quality of urban distribution network power supply.

    Centralized power distribution in industrial and commercial parks:
    Suitable for industrial and commercial parks such as automobile manufacturing, electronic information, and high-end equipment. Such scenarios have dense equipment, frequent load fluctuations, and high requirements for power supply stability and anti-interference ability. The product has strong resistance to power grid impact and load fluctuations, and can stably support the operation of multiple loads such as production lines, precision equipment, and central air conditioning; The intelligent monitoring function can provide real-time feedback on equipment abnormalities, making it easy for park operation and maintenance personnel to accurately troubleshoot faults and avoid production line shutdowns caused by power distribution failures. At the same time, the environmental protection characteristics meet the green production certification requirements of the park.

    Large scale distributed photovoltaic/energy storage power stations connected to the grid:
    Adapt to the 10kV grid connection link of industrial and commercial rooftop photovoltaics and centralized energy storage power stations. Such scenarios need to balance grid stability, environmental protection, and intelligent control. The product has no SF6 gas emissions, fits the green positioning of new energy projects, and has stable grid switching capabilities, which can effectively cope with fluctuations in photovoltaic output and energy storage charging and discharging impacts; Support access to the new energy management and control platform, achieve real-time upload and remote scheduling of grid connected data, ensure efficient integration of photovoltaic energy into the distribution network, and assist in the consumption of new energy.

    Construction of rural revitalization power grid:
    Suitable for scenarios such as rural power grid renovation and distribution in characteristic industrial parks, where transportation is inconvenient, operation and maintenance personnel are insufficient, and outdoor environments are complex. The product has strong weather resistance and can withstand harsh weather conditions such as high temperatures, rain, snow, and dust. Its low maintenance feature eliminates the need for frequent inspections, reducing the operation and maintenance costs of rural distribution networks; Lightweight design facilitates transportation to remote villages, simple installation and debugging, can quickly improve the rural distribution network architecture, support the development of characteristic industries such as agricultural product processing and rural tourism, and assist in rural revitalization.

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