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NSGTG-3.3
NSGTG-3.3 Solid Insulated Switchgear
The 3.3kV solid insulated ring main unit is a compact distribution equipment designed for low-voltage distribution network terminals, small industrial and civilian scenarios. It uses environmentally friendly epoxy resin as the core insulation medium, integrates casting and packaging of high-voltage core components, and abandons traditional insulation oil and SF6 gas. The product strictly complies with GB/T 11022 and industry specific standards, integrating load switches, grounding switches, and simple metering modules. It has a simple structure and easy operation, and is suitable for radiation power supply and terminal distribution needs under 3.3kV voltage level. It is particularly suitable for scenarios with limited space, basic requirements for environmental protection and safety, and is the preferred equipment for civil distribution network and small industrial power supply.
Features
1. Ultra compact structure, suitable for small scenarios:
The cabinet width can be controlled within 600mm, reducing the volume by 30% compared to similar products, without occupying a large area of power distribution space, perfectly adapting to narrow areas such as residential distribution rooms, small commercial machine rooms, and building mezzanines.
2. Lightweight design, low installation cost:
The overall weight does not exceed 300kg, no heavy lifting equipment is required, manual handling and installation can be completed, and the basic construction requirements are simplified, greatly reducing on-site deployment costs and construction period.
3. The foundation insulation is reliable, and the operation and maintenance cost is extremely low:
the insulation structure is optimized for the 3.3kV low voltage level. The epoxy resin material has excellent anti-aging and anti condensation performance, and no professional maintenance is required in daily life. Only annual appearance inspection is required to reduce the later operation and maintenance investment.
4. Adapt to civilian loads and ensure adequate safety protection:
The rated current is suitable for the range of 630A-800A civilian loads, with a protection level of IP4X. It has complete anti misoperation and grounding protection functions, which can effectively avoid the risks of electric shock and equipment failure in civilian scenarios.
Execution standards: GB/T 11022, DL/T 1484; Rated parameters:rated current 630A-800A, rated short-circuit breaking current 16kA-20kA, rated short-time withstand current 20kA/3s; Material configuration: The breakdown strength of epoxy resin is ≥ 22kV/mm, the conductor is made of oxygen free copper, and the cabinet is made of cold-rolled steel plate with electrostatic spraying; Customized service: Simple metering and overload alarm modules can be installed as needed, supporting personalized adjustment of cabinet color.
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Specification
| Name | Unit | Parameter | |||
| Rated voltage | kV | 3.3 | |||
| Rated frequency | Hz | 50 | |||
| Current rating | A | 630 | 1250 | ||
| Rated insulation level | Power frequency withstand voltage | Fracture | kV | 12 | |
| Fireline to Fireline | kV | 10 | |||
| Fireline to ground | kV | 10 | |||
| Withstand voltage for lightning impulses | Fracture | kV | 23 | ||
| Fireline to Fireline | kV | 20 | |||
| Fireline to ground | kV | 20 | |||
| 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 this product be used in outdoor settings?
Supports outdoor installation, with a protection level of up to IP54 after installing a rain cover, which can resist rain and dust invasion, and is suitable for outdoor substations in residential areas, rural outdoor distribution points, and other scenarios.
What are the advantages compared to traditional air insulated ring main units?
The core advantages are sealed insulation, no condensation risk, and smaller size and lighter weight, without the need for regular cleaning of insulation components, making it more suitable for low-cost operation and maintenance needs in civilian scenarios.
Does it support dual operation of manual and electric?
Supports, comes standard with a manual operating mechanism, and can be equipped with an electric operating module as needed to meet the dual needs of manual emergency operation and simple remote control in small scenarios.
How long is the service life and warranty period?
Under normal working conditions, the service life is ≥ 18 years. The insulation components are guaranteed for 10 years, and the cabinet and core components are guaranteed for 5 years. During the warranty period, free maintenance and component replacement services can be enjoyed.
Related Applications
Distribution network for residential communities and urban villages:
Suitable for terminal power distribution scenarios in newly built residential areas and urban village renovations. In such scenarios, the distribution room space is narrow and the residential density is high, requiring high safety and quietness. The ultra compact and lightweight characteristics of the 3.3kV ring main unit can save space in the distribution room, and the fully sealed insulation structure eliminates leakage and fault noise. At the same time, it adapts to the management capabilities of the community property with low operation and maintenance requirements, providing stable daily electricity for residents and reducing the impact of distribution failures on their lives.
Small commercial complexes and street shops:
Suitable for centralized power distribution in supermarkets, convenience stores, and clusters of street shops, this type of scenario has moderate load fluctuations, and the power distribution area is mostly located in the back of the shop or in the corners of the floor, with limited space. The product can be flexibly deployed in small spaces, adapting to various loads such as shop lighting, air conditioning, and cash register equipment. At the same time, the perfect anti misoperation function can avoid safety accidents caused by non professionals touching it, ensuring orderly commercial operations.
Upgrading the distribution network in rural and remote areas:
Adapt to rural power grid renovation and remote village terminal power supply scenarios, which have inconvenient transportation, insufficient operation and maintenance personnel, and complex outdoor environments. The lightweight design of the product facilitates transportation and installation in fields, village entrances, and other locations. It has strong outdoor adaptability and can withstand high temperatures, rain, snow, and other weather conditions. At the same time, it has low mobility and does not require frequent inspections, effectively solving the problem of difficult installation and operation of rural distribution networks and improving power supply stability.
