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NSGTG-6
NSGTG-6 Solid Insulated Switchgear
The NSGTG-6 6kV solid insulated switchgear is a medium-voltage power distribution system designed specifically for 6kV power networks commonly used in heavy industrial facilities and municipal infrastructure. It utilizes epoxy resin solid insulation, encapsulating high-voltage components in a sealed structure, achieving stable switching operation, high insulation reliability, and maintenance-free operation without the need for oil or SF6 gas.
This switchgear supports ring, radial, and segmented power supply systems at 6kV voltage levels. The 6kV solid insulated switchgear integrates key components such as circuit breakers, load switches, and protection modules into a single, compact, sealed structure, providing reliable switching and protection for medium-voltage power distribution networks.
Manufactured according to IEC 62271-200 and relevant GB standards, the NSGTG switchgear features stable performance and low maintenance requirements. It is widely used in industrial facilities, municipal substations, commercial buildings, and urban power distribution networks, providing reliable and efficient medium-voltage power distribution.
Features
1. Versatile for Industrial and Municipal 6.6kV Networks
The NSGTG switchgear is designed specifically for 6kV medium-voltage distribution systems used in industrial plants, municipal infrastructure, and renewable energy facilities. Its flexible rated current and breaking capacity allow the same platform to serve multiple applications, simplifying equipment selection and reducing procurement costs.
2. High Load Capacity and Stable Operation
The switchgear features an optimized conductor and switching structure capable of handling frequent load fluctuations and short-term overload conditions. With a rated short-circuit breaking current of 25kA–31.5kA, it ensures reliable operation during equipment startup, peak municipal demand, and other high-load conditions.
3. Smart Monitoring and Remote Control
The NSGTG switchgear supports intelligent distribution network management. Equipped with a smart controller and RS485 communication interface, it enables switch status monitoring, fault alarms, and remote switching operations. It can be integrated into distribution automation systems, making it suitable for unattended substations and modern smart grids.
4. Environmentally Friendly Solid Insulation
The switchgear uses epoxy resin solid insulation, eliminating the need for SF6 gas or insulation oil. This design prevents gas leakage and oil contamination while meeting modern environmental and carbon-reduction requirements. The recyclable insulation material makes it suitable for industrial parks and municipal projects with strict environmental standards.
5. Modular Design for Flexible Expansion
The modular architecture allows switching units, protection modules, and metering components to be installed or upgraded independently. As system loads increase, additional modules can be added without replacing the entire cabinet, reducing future upgrade and expansion costs.
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Specification
| Name | Unit | Parameter | |||
| Rated voltage | kV | 6 | |||
| Rated frequency | Hz | 50 | |||
| Current rating | A | 630 | 1250 | ||
| Rated insulation level | Power frequency withstand voltage | Fracture | kV | 23 | |
| Fireline to Fireline | kV | 20 | |||
| Fireline to ground | kV | 20 | |||
| Withstand voltage for lightning impulses | Fracture | kV | 46 | ||
| Fireline to Fireline | kV | 40 | |||
| Fireline to ground | kV | 40 | |||
| 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 the product be used in dusty and corrosive environments?
Yes, the cabinet has undergone special anti-corrosion spray treatment and is equipped with a fully sealed insulation structure. It can operate stably in environments with high dust and mild corrosive gases, and is suitable for scenarios such as chemical parks and metallurgical plants.
Is the intelligent module compatible with existing distribution automation systems?
Compatible with IEC 61850 communication protocol, seamlessly integrated into mainstream distribution automation platforms without the need for additional conversion modules, achieving data interoperability and unified control.
Is it difficult to repair after a malfunction, and are spare parts easy to obtain?
Easy to maintain, modular design allows for quick replacement of faulty units without the need for professional disassembly of equipment. The core spare parts have strong universality, and the manufacturer has a standing inventory that can be quickly allocated to shorten downtime due to malfunctions.
What are the core differences compared to 6.6kV products?
The core difference lies in voltage adaptability, with 6kV being the mainstream voltage level for domestic industrial and municipal use, providing a wider range of adaptability, 6 kV is mostly targeted at special industries or overseas scenarios, with the same structure and performance framework, only differing in insulation parameters and conductor specifications.
Are there any special requirements for the foundation during installation?
No special requirements, only the cement foundation needs to be leveled, no additional reinforcement treatment is required, the cabinet comes with a fixed device, the installation process is simple, and on-site deployment can be quickly completed.
Is the NSGTG 6.6kV switchgear really maintenance-free?
The 6kV solid insulated switchgear uses solid epoxy insulation and sealed components, which significantly reduces maintenance requirements compared with traditional switchgear. Routine inspections are usually limited to visual checks and basic system monitoring, helping reduce long-term operating and maintenance costs.
Can the switchgear be integrated into smart distribution systems?
Yes. The NSGTG 6kV solid insulated switchgear supports intelligent monitoring and remote communication, typically through RS485 or other control interfaces. It can be integrated into distribution automation systems to enable real-time monitoring, fault alarms, and remote switching operations.
How long does 6.6kV solid insulated switchgear typically last?
With proper installation and normal operating conditions, solid insulated switchgear can operate reliably for 20–30 years or more. Its sealed insulation structure helps protect internal components from moisture, dust, and environmental contamination.
Related Applications
Industrial Park Power Distribution
The NSGTG 6kV solid insulated switchgear is well suited for general industrial parks, including mechanical manufacturing, electronics processing, and food production facilities. The switchgear provides strong load impact resistance and stable operation for equipment such as machine tools, automated production lines, and refrigeration systems.
Urban Road and Bridge Distribution Networks
The 6kV solid insulated switchgear is widely used in municipal infrastructure systems, including power distribution for street lighting, traffic monitoring, and emergency equipment along urban roads, overpasses, and tunnels. Remote monitoring and control functions enable municipal authorities to quickly manage faults and maintain stable public infrastructure services.
Distributed Photovoltaic Power Stations
The NSGTG 6kV solid insulated switchgear is suitable for grid-connected distribution systems in distributed photovoltaic (PV) power plants. It supports the boosting and grid-connection stages of industrial and commercial solar projects. The solid insulation design eliminates environmental pollution, aligning with the sustainability goals of renewable energy projects.
Power Distribution for Large Public Facilities
The 6kV solid insulated switchgear is also ideal for large public buildings such as hospitals, exhibition centers, and sports venues where power reliability is critical. The 6kV switchgear provides stable operation and rapid fault isolation to protect key systems, including medical equipment, emergency lighting, elevators, and HVAC systems.
