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Nanning Rail Transit Line 2 - 5 Power Distribution Project

As the backbone network of urban public transportation, Nanning Rail Transit puts extremely high requirements on the reliability, safety, and intensification of the power supply system. Siewu Electric Group Co., Ltd., relying on its many years of practical experience in the field of rail transit power distribution, has provided the core power distribution equipment —— AC 40.5kV Gas - Insulated Metal - Enclosed Switchgear (C - GIS) for Lines 2 to 5 of Nanning Rail Transit, helping Nanning Metro build an efficient and stable traction power supply system.


Applied products:AC 40.5kV Gas - Insulated Metal - Enclosed Switchgear (C - GIS)

Solution
Customer Pain Points

Siwu Solution

Customer Value

1. Compact design
Adopting an integrated dual-gas chamber structure and laser double-sided welding process, while ensuring that the operating space height of the cable chamber reaches800mm, the total height of the equipment is controlled at2400mm, perfectly adapting to the narrow space of the subway.

Space optimization:

The equipment is highly intensive, effectively saving substation space and reducing civil construction costs.

Reliable operation:

The stainless - steel gas chamber and multiple sealing design ensure the long - term stable operation of the equipment in humid and high - load environments.

Easy operation and maintenance:Electronic sensors and modular structures simplify the maintenance process, reducing downtime and operation and maintenance costs.

Industrial collaboration:Promote the development of the high - end electrical equipment manufacturing industrial chain in Guangxi, achieving regional technological upgrading and economic stimulation.

2. High Sealing Reliability Applying multi - seal ring technology and process, it significantly improves the air chamber sealing performance and ensures the long - term operational stability.

3. Intelligent monitoring function

Equipped with an electronic density sensor, it reduces intermediate connection links and enables real - time status monitoring and fault early warning.

4. Localized production support

Siwu Electric has achieved localized production of core equipment in Guangxi, shortening the supply chain cycle and improving the service response speed.

1. Severe space restrictions


The space of subway substations is limited. Traditional switchgear has a large volume, making layout difficult.

4. Localized production requirements


The industrial chain of high - end electrical equipment manufacturing in Guangxi region urgently needs to be improved, and the localization of key technologies needs to be promoted.

2. High reliability requirementsThe traction power supply system needs to operate under high load for a long - term, which has extremely high requirements for the sealing, insulation, and stability of equipment.

3. High maintenance complexity Traditional equipment inspection is cumbersome, and the operation and maintenance costs are high. It is necessary to reduce the failure rate and maintenance frequency.