Brief description of the withstand voltage test of dry-type transformer

Brief description of the withstand voltage test of dry-type transformer

Dry-type transformers are used in power systems to conduct insulation withstand voltage tests on various high-voltage electrical equipment, electrical components, and insulating materials under power frequency or DC high voltage. Dry-type transformers have the advantages of small size, light weight, compact structure, and strong versatility.

The iron core of dry-type transformers is made of high-quality cold-rolled grain-oriented silicon steel sheets, 45 full-bevel joints, no punching, and epoxy tape binding. The high-voltage winding is wound with copper wire and has cylindrical, continuous, and pancake structures.

The low-voltage winding has cylindrical copper foil winding and cylindrical, continuous, spiral, and pancake structures wound with copper wire. This product is small in size, good in quality, low in loss, and low in noise.

Dry-type transformer features: Application range:

Dry-type transformers have the characteristics of reasonable design structure, low loss, low noise, strong overload capacity, flexible installation, small size, easy operation and maintenance, etc. They can be widely used in high-rise buildings, commercial centers, subways, airports, stations, industrial and mining enterprises, drilling platforms, oil production platforms, and are particularly suitable for use in places with high fire protection requirements and harsh environments such as flammable and explosive materials.

Usage conditions:

(1) Ambient temperature: -15℃ to +40℃

(2) Altitude not exceeding 1000 meters

(3) Relative humidity: The average relative humidity in the wet month is 90% and the average monthly temperature is 25℃.

(4) Parallel use is strictly prohibited.

(5) The installation site should be free of gases, vapors, chemical deposits, dust, dirt and other corrosive and corrosive media that may seriously affect the insulation of the voltage regulator, and there should be no severe vibration or bumps

Dry-type-transformer

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