Three-phase autotransformer 230/400V 1 KVA reversible with box
Three-phase autotransformer 230/400V 1 KVA reversible with box
Three-phase autotransformer 230/400V 1 KVA reversible with box
Three-phase autotransformer 230/400V 1 KVA reversible with box
Three-phase autotransformer 230/400V 1 KVA reversible with box
Three-phase autotransformer 230/400V 1 KVA reversible with box

Three-phase autotransformer 230/400V 31.5 kVA reversible with enclosure

€809.44 Tax included

668.96 tax excl.

ATT31,5

Three-phase 31.5kVAreversible autotransformer with metal enclosure, allows voltage adaptation from three-phase 230Vac to three-phase 400Vac or three-phase 400Vac to three-phase 230Vac. It also generates neutral.

It allows to adapt the voltage in machinery, motors, pumps, etc., in an economic way.

esquema eléctrico autotransformador trifásico
Representative image for illustrative purposes, the item supplied will correspond to the specifications indicated.

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Three-phase autotransformer for voltage change, dry type, reversible, capable of generating neutral while transforming the voltage value. They are indicated when it is required to adapt the voltage in an economical way, without galvanic separation. Its usual field of application is the adaptation of voltages in machines, pumps, motors, etc.. They are supplied in metallic box that provides a degree of isolation IP-23, connection by means of terminals.

Manufactured with magnetic sheet of low losses providing high performance.

Technical characteristics:

  • Windings: Thermal class N 200ºC.
  • Transformer ratio 230/400V and neutral. Reversible.
  • Power: 31.5 KVA.
  • Apparent current
    • 400Vac: 45.5A
    • 230Vac: 79.2A
  • Frequency: 50/60Hz.
  • Connection: Yn0.
  • Test voltage: 3KV between windings and ground.
  • Insulation: Thermal class F 155ºC and H 180ºC.
  • Protection: IP-23 (Box metallic).
  • Ambient temperature: TA=25ºC.
  • Cooling: ANAN (Natural air).
  • Certification: UNE-EN 61558, UNE-EN 60076.

Dimensiones autotransformadores trifásicos Sevein

The transformer is supplied without any type of overload protection, it is mandatory to install them to avoid overloading the transformer.
The power and current indicated are apparent, the active current provided by the transformer will depend on the power factor of the connected load.
Professional use material, install in compliance with the regulations in force at the place of installation.

Questions

Question
La intensidad en 400V son 45,5A por fase?
Answer
Buenos días.
Un autotransformador de 31,5 KVA conectado entrada 230 Vac trifásico salida 400 Vac trifásico trabajando al 100% la intensidad máxima a la salida es 45,5 A por fase, a la salida del transformador hay que instalar un elemento de corte que esté en función de  la intensidad máxima que es capaz de soportar, en su caso  lo que más se aproxima es 40 A.
No obstante, verifique que cumpla con sus especificaciones.



Saludos
Adajusa
Juanjo on 01/31/2025 21:19:11

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