22kv to 400v 200kva Power Transformer

22kv to 400v 200kva power transformer is an indispensable key electrical equipment in the field of power transmission and distribution.It achieves voltage transformation and power transmission based on the principle of electromagnetic induction. The equipment is mainly composed of a core, windings, heat dissipation structure and safety protection components, with a stable structure and reliable operation.

22kv to 400v 200kva power transformer uses high quality cold rolled oriented high magnetic permeability silicon steel sheets as material and adopts the 45°full slope multi stage progressive laminating process, which ensures no load loss and no load current are significantly reduced, and the noise level is decreased.

For the low voltage winding of 22kv to 400v 200kva power transformer, except for small capacity ones which use copper wires, the general structure is a cylindrical one wound with copper foil; the high voltage winding adopts a multi layer cylindrical structure, using paper covered flat wires or enameled wires.

By adopting the same winding technique and using a high speed winding machine, it is ensured that the winding tension remains constant and the wire bundle is arranged closely, thereby achieving a balanced ampere turn distribution, low leakage magnetic field, high mechanical strength, and strong anti short circuit capability.

Technical parameter:

Features：

1.High efficiency and energy conservation

The average no load loss of 22kv to 400v 200kva power transformer is reduced by 30% compared to the GB/T6451 standard, the average load loss is reduced by 25%, and the operating cost is reduced by 20% on average.

2.High reliability

22kv to 400v 200kva power transformers have strong anti short circuit capability and fully sealed structure design can prevent oxygen and moisture from entering, slowing down insulation aging and extending service life.

3.Longevity and maintenance free operation

During the normal usage period, there is no need to replace the transformer oil. The maintenance cost is low and the design lifespan can exceed 20 years.

Q:What is the structure and sealing method of the 22kv to 400v 200kva power transformer’s oil tank? How is the surface of the fuel tank treated?

A:A corrugated oil tank with a fully sealed structure (the tank edge can be welded or bolted) is adopted. The corrugated plates are formed by folding cold rolled steel plates, which have the functions of heat dissipation and adjusting the oil volume through elastic deformation, and can replace the oil reservoir. And about the sealing technology, imported semi liquid silicone is used as the sealing material of 22kv to 400v 200kva power transformer, which is resistant to high temperatures and does not age easily, and has good sealing performance. All fasteners use self locking anti loosening nuts.

Moreover, the oil tank is treated with sandblasting rust removal and electrostatic powder spraying (such as epoxy resin or acrylic resin coatings), with a paint film thickness greater than 150μm, providing corrosion resistance, weather resistance, and anti aging properties.

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