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SM6 Indoor Gas Insulated Ring Main Unit Switchgear Panel with VCB

The LGSM6 Indoor Gas Insulated Ring Main Unit Switchgear Panel with VCB is a ring main unit that uses air as the insulating medium and is equipped with a high-performance vacuum circuit breaker (VCB). Rated voltages cover 10kV, 12kV, and 24kV. Because it uses air as the insulating medium, there is no need for gas monitoring or recovery treatment. It is widely used in various scenarios such as industrial and mining enterprises, residential power distribution, and wind and solar power distribution rooms. Annual sales exceed 3,000 units, and mainstream solutions are kept in stock to ensure rapid delivery.

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Product Description

The LGSM6 Indoor Gas Insulated Ring Main Unit Switchgear Panel with VCB is a fully enclosed ring main unit that uses SF6 gas as the primary insulating medium. Its core feature is the integration of a vacuum circuit breaker (VCB) within a sealed gas chamber. This retains the advantages of gas-insulated switchgear, such as small size and maintenance-free operation, while also possessing the high breaking capacity and suitability for frequent operation of vacuum circuit breakers. Therefore, it is highly suitable for applications in industrial and mining enterprises, residential power distribution, wind and solar power generation, and various substations.As a professional GIS RMU manufacturer, Lugao's switchgear solution fully complies with international standards such as IEC, ISO, and CE, ensuring global recognition and reliable operation in various power distribution scenarios.

Main technical parameters

No.	Item		Unit	Parameters
1	Rated Voltage		kV	12	24	36	40.5
2	Rated Current		A	630/1250
3	Rated Frequency		Hz	50/60
4	1-Minute Power Frequency Withstand Voltage	Total Value	kV	42	55	80	95
		Break Point		48	65	95	110
5	Lightning Impulse Withstand Voltage	Total Value	kV	75	125/150	170	95
		Break Point		85	150/160	185	215
6	Rated Short-Time Withstand Current	Main Circuit	kA	25/2s
		Grounding Circuit		25/2s
7	Rated Peak Withstand Current		kA	63			50
8	Rated Transfer Current		A	1300~1700
9	Rated Load Closing Breaking Current		A	630
10	Rated Cable Charging Breaking Current		A	50/10
11	Unloaded Transformer Breaking Current		A	20
12	Cable Charging Ground Fault Breaking Current		A	100			80
13	Rated Short-Circuit Breaking Current		kA	20
14	Rated Short-Circuit Closing Current		kA	63			50
15	Protection Class			IP3X
16	Load Switch Life		Time	5000
17	Grounding Switch Life		Time	5000

Typical Scheme Diagram：

Factory shooting：

Core technology features:

1. The LGSM6 Indoor Gas Insulated Ring Main Unit Switchgear Panel with VCB is used, which eliminates arcing in the main circuit and has a long electrical life. The entire vacuum circuit breaker is sealed in a stainless steel gas chamber filled with SF6 gas, completely isolating it from the external environment and improving insulation reliability.

2. All high-voltage live components, such as busbars, disconnect switches, vacuum circuit breakers, and current transformers, are sealed inside a gas chamber, requiring no maintenance for their entire lifespan and no cleaning of the insulation components.

3. Its compact size can significantly save on the floor space of the power distribution room, making it particularly suitable for prefabricated substations or projects with limited space.

4. It features a five-proof mechanical interlock to prevent misoperation. The air box is equipped with a directional pressure relief channel to ensure operational safety.

5. It reserves interfaces for electric operation and automation to meet the requirements of smart distribution networks.

Application scenarios:

Industrial Sector: Factory power distribution, mining

Construction Sector: Commercial complexes, high-rise buildings, residential communities

New Energy: Wind power generation, photovoltaic power stations

Infrastructure: Airports, subways

Supply and Service

Inventory and Delivery: We maintain a large inventory; regular orders ship within approximately 10 days.

After-sales Service: We provide 24-hour response and support on-site installation guidance and commissioning.

Customized services: We can provide solutions for non-standard LGSM6 Indoor Gas Insulated Ring Main Unit Switchgear Panel with VCB according to customer needs, such as special voltage levels, secondary protection schemes, and parallel cabinet connections.