Tamura Autotransformers

Products > Low Voltage Transformers > Autotransformers

The three-phase or single-phase autotransformers are a type of magnetic that have the primary and secondary windings not electrically insulated (The autotransformer does not have galvanic isolation). When it has the appropriate and necessary technical requirements, autotransformers have great advantages over transformers, such as reduced dimensional and cost and greater efficiency. They can be supplied with or without enclosure, with or without fuses/circuit breakers.

Materials available for download:

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- Dry insulation, suitable for indoor installation.

- In standardized powers from 3.0 to 1000kVA.

- For one or more primary and secondary voltages;

- Optimized designs with low losses and excellent heat dissipation;

- Main application in voltage adaptation of components to power circuits;

- Easy access connections;

- They are supplied with different degrees of protection and with a varnish immersion finish, providing robust protection against moisture, dust and corrosion, in addition to protecting against unwanted noise.

Note: Can be supplied with or without fuses.

Manufacturing and testing standard: NBR 5356 / IEC 60076 / IEC 61558-2-13

Isolation voltage class: 1.1 kV - Voltage applied in test: 3.0 kVrms

Temperature class: F (155° C)

Temperature rise: 100° C

Room temperature: Maximum 40°C, minimum 5°C, average for 24h max. of 30°C

Overvoltage limit: Maximum of 5% (with rated current)

Altitude: maximum of 1000m

Autotransformers of general purpose are designed for the same applications of low voltage transformers of general purpose, that is, for applications where it is necessary the voltage supply at appropriate levels for powering machines, equipments and general industrial facilities, with maximum efficiency and safety, but where galvanic isolation is not a basic facility requirement. They can also be used for generating an artificial neutral in facilities that do not have neutral, and that need to connect single-phase loads between phase and neutral.
3kVA to 15kVA - SATP
Keeping all the significant characteristics of Indusul transformers, the SATP autotransformer is a special type, derived from the transformer. The primary and secondary windings are not insulated electrically (there is no galvanic isolation).
20kVA to 1000kVA - SATF

Keeping all the significant characteristics of Indusul transformers, the SATF autotransformer is a special type, derived from the transformer. The primary and secondary windings are not insulated electrically (there is no galvanic isolation).

Concordo em enviar meus dados para a Tamura Brasil para que sejam tratados de acordo com a Política de privacidade.