Covered Transformer

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产品摘要

The construction and billboard type low-voltage structure of covered transformer: The covered transformer is divided into over-ground part and underground part. The main body is installed in the concrete pit, not occupying the surface space. The high-voltage casing shaft, low-voltage terminal, high-voltage load switch, backup fuse, plug-in arrester, pressure relief valve, vacuum pressure gauge, temperature controller and oil level indicator are installed on the covered transformer and tank cover, and these accessories may be observed and operated on the ground. The oil tank is made of stainless steel and adopts fully sealed structure and tank rim closed welding structure, with the sealing area minimized, and the transformer may safely run for a long time in the special underground environment.

产品介绍

1. Brief Description
    The construction and billboard type low-voltage structure of covered transformer: The covered transformer is divided into over-ground part and underground part. The main body is installed in the concrete pit, not occupying the surface space. The high-voltage casing shaft, low-voltage terminal, high-voltage load switch, backup fuse, plug-in arrester, pressure relief valve, vacuum pressure gauge, temperature controller and oil level indicator are installed on the covered transformer and tank cover, and these accessories may be observed and operated on the ground. The oil tank is made of stainless steel and adopts fully sealed structure and tank rim closed welding structure, with the sealing area minimized, and the transformer may safely run for a long time in the special underground environment. The ground part of covered transformer is a mixed structure integrating the billboard and low-voltage switch box. The box inside is a low-voltage distribution box, and a neon lamp box billboard is placed on both sides and they may be used for public service advertisement, traffic guidance and road information, with very good visual effects. The adoption of covered transformer and billboard low-voltage structure conforms to the urban ecology design idea, beautifies the environment and occupies a small area. 

2. Application Scope
The product applies to the main urban roads, airports, expressways and residual areas. 

3. Model Description


4. Standards

5. Normal Service Conditions

6. Features
1. The product is suitable for urban environment (installed in basement or cellar), particularly for densely populated central cities. 
2. The product is applicable to lighting and power systems of streets, expressways, bridges, tunnels, parking lots, airports, ports and tourist attractions. 
3. The high and low-voltage incoming and outgoing lines adopt waterproof, fully sealed, fully insulated, and fully shielded connection method. 
4. The box shell is made of stainless steel and fully sealed and may be immersed into water for certain period of time. 
5. The protection system should be convenient to operate and safe, and the accessories adopt American COOPER products; 
6. The handling rod is adopted to operate the covered transformer, with the operation mode the same as that of combined transformer. 
7. Fully considering the particularity of heat dissipation condition, the transformer adopts low-loss and low-temperature design. 
8. The measures for prevention of water and automatic water drainage are installed in transformer cellar. 

产品参数