Dry-type ТС/ТСЗ transformer is the electrical device aimed at converting electrical alternating current. It heats up during operation. Therefore, cooling system is provided in the transformer. Thermal protection for dry transformers is based on air cooling. ТС dry-type transformers are safe, since their design is free from combustible materials, they withstand shaking; the units can be installed in dry premises with high fire safety requirements; the units can be equipped with a protective housing, which results in reducing the likelihood of human electric shock from the operating transformer.

Transformers with a power up to 1000 kVA are cooled through natural air circulation. In more powerful models air is "blown" by fans. The units are designed for supplying reduced ­three-phase voltage with industrial frequency of 50 Hz to various consumers.

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Transformers of ТС series comply with the requirements of GOST Р52719-2007. In terms of the method of protection against electric-shock hazard the transformers are referred to class I pursuant to GOST and its protection degree is IP00 pursuant to GOST 14254-2015.
Types of climatic category - УЗ, УХЛЗ pursuant to GOST 15150-69. Temperature class of insulation is B, F pursuant to GOST 8865-93.
Transformer version in terms of the installation conditions on the operation site - built-in, they can be installed both horizontally and vertically (at the customer's request). Connection circuit and group - У/Ун-0.
Transformers of ТСЗ type - related to the protected version (protection degree is IP21).

Operating conditions:

Transformers are designed for indoor operation.
Height above sea level should not exceed 1000 m.
Ambient temperature should range from -45 °C to +40 °C.
The environment should be non-explosive.
Relative humidity at +25°C should not exceed 80%.
Power network frequency makes 50 Hz.

Note: All transformers within the specified power scope can be manufactured as compatible with any voltage values for low voltage windings (for ТС and ТСЗ) at the customer's request. Winding connection circuits and groups can also be coordinated with the customer.
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