What exactly is the casing of the box transformer substation?

What exactly is the casing of the box transformer substation?

1. What exactly is a box transformer housing?

In simple terms, the casing of a box transformer is the outdoor and oil transformation and distribution complete set of equipment composed of three parts: high-voltage switchgear, power transformer, and low-voltage switchgear. It is an indispensable component of a box transformer substation. In short, it is a "container" used to carry high-voltage switchgear, low-voltage distribution equipment, and distribution transformers. It mainly consists of a base, side panels, partitions, doors, and a top cover. The partitions, hoardings, doors, and top covers above the base can be connected together by welding or fasteners, while the frame of the base and top cover is welded from angle steel or channel steel.

2. What are the types of box transformer shells?

Box type substations are mainly divided into two types: European type and American type. Due to the differences in box type substations, various materials are used for the production of box transformer shells, resulting in various types of box transformer shells.

a. The composite plate box transformer housing is a commonly used type of box transformer housing, which is mainly made of composite plate. The main body of the shell is made of channel steel, and the four sides of the shell are made of composite plates made of cold rolled plates sandwiched with thermal insulation foam. The characteristic of the composite plate box transformer shell is that it has good thermal insulation, low cost, and faster production cycle.

b. Metal carved board box transformer housing, also known as metal embossed board box transformer housing. Metal carved board is an energy-saving decorative material that has both insulation and decorative functions. It not only composite with polystyrene insulation layer, but also provides us with ornamental embossing effects such as red wood grain, marble, and mosaic. The advantages of metal carved board box transformer housing are relatively obvious, and we will provide a special introduction later.

c. Landscape type box transformer shells are commonly used, such as cement GRC box transformer shells and stainless steel wooden strip landscape box transformer shells. Due to the need for processing techniques such as ceramic tile veneer and anti-corrosion insulation wood strip inlay on the outside of the shell, it is highly ornamental, just like a small house, and is more common in application fields such as scenic spots.

d. The stainless steel box transformer housing also uses channel steel as the main support for the entire housing, and is made of stainless steel plates around it, which has good anti-corrosion and rust prevention performance, and the overall structure is sturdy.

3. What characteristics does a box transformer housing need to contain?

A good box transformer housing not only needs to have strong integrity, small size, compact structure, safe and reliable operation, convenient maintenance, and mobility, but also needs to have beautiful appearance, anti sticking small advertisements, high mechanical strength, sun resistance, flame retardant, heat insulation, anti-corrosion, moisture-proof, noise reduction, and anti condensation characteristics. Only when these basic conditions are met or even exceeded will it be called a good box transformer shell.

4. How to install the box transformer housing? Materials and usage environment of box transformer housing

The electrical equipment of the box transformer housing varies depending on the usage situation, and the primary main wiring diagram is diverse. The typical scheme consists of an incoming cabinet, an outgoing cabinet, a metering cabinet, and a reactive power compensation cabinet. Used to control the power supply and protection of the entire low-voltage system; The outgoing cabinet is equipped with a shunt switch, which is used to control the power supply and protection of the low-voltage outgoing terminal. The metering cabinet is mainly used to charge the electric energy consumed by users. It is equipped with a metering Electricity meter. Due to the calculation of economic benefits, the cabinet must take anti stealing measures, such as lead sealing; The reactive power compensation cabinet mainly compensates for the power factor of the power supply system, with built-in capacitors and automatic switching devices.

Generally, transformers are placed in enclosed boxes. In order to solve the problem of heat dissipation, natural ventilation and forced ventilation are often used. From the perspective of overall operating costs and reliability, natural ventilation should be adopted, that is, the air circulation system should be composed of ventilation holes, pipelines, louvers, etc. on the entire box transformer shell. Forced ventilation generally adopts exhaust fans with automatic temperature measurement control. For advanced users, air conditioning systems can also be used. Due to the outdoor use of the box transformer casing, in order to prevent the temperature of the transformer room from rising due to sunlight, a double-layer sandwich structure can be adopted. The top cover adopts an air tower structure with an air cushion, and technical measures such as using insulation materials can be taken

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