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 12 KVA reversible with enclosure

€430.80 Tax included

350.24 tax excl.

ATT12

12kVAthree-phase reversible autotransformer with metal enclosure, which allows voltage adaptation from 230Vac three-phase to 400Vac three-phase or 400Vac three-phase to 230Vac three-phase. It also generates neutral.

Allows to adapt the voltage in machinery, motors, pumps, etc., in an economical way.

Reference: ATT-12

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 low-loss magnetic plate providing high performance.

Technical characteristics:

  • Ref: ATT-12
  • Windings: Thermal class N 200ºC.
  • Transformer ratio 230/400V and neutral. Reversible.
  • Power: 12 KVA.
  • Apparent current
    • 400Vac: 18.1A
    • 230Vac: 31.4A
  • 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.
Material for professional use, install in compliance with the regulations in force at the place of installation.

Questions

Question
Bonjour,

Pourriez-vous me donner le type de protection et le calibre à utiliser en amont d'un autotransformateur 12.5KVA 230V/400V ?

En vous remerciant par avance,
Cordialement
Answer

Bon après-midi.

Nous devons connaître les conditions de fonctionnement de l'autotransformateur, la puissance et la tension de l'équipement qu'il doit alimenter.


Salutations

ADAJUSA

pierre SELLIER on 03/04/2025 15:53:08
Question
Bonjour Nous avons un réseau électrique 3x230V sans neutre. Nous avons acheté une borne de recharge pour véhicule électrique Réf: HomeBox 16A/3F - 11kW qui a besoin du fil neutre. Votre autotransformateur peut il servir pour notre borne de recharge https://adajusa.fr/fr/autotransformateurs-monophases-et-triphases/4466-autotransformateur-triphase-230-400v-125-kva-reversible-avec-boitier-8435532844662.html Merci
Answer
Bonjour.

Un autotransformateur triphasé entrée 230 Vac triphasé sortie 400 Vac triphasé permet un changement de tension et la génération du neutre.
L'autotransformateur que vous avez choisi supporte une charge de 8,75 KW, il est petit, le fabricant du transformateur recommande de dimensionner 20% de la charge maximale à laquelle il doit être soumis, donc 11 x 20% = 2,2 KW, vous devriez chercher un autotransformateur qui supporte une charge de 13,2 KW.
https://adajusa.fr/fr/autotransformadores-monofasicos-y-trifasicos/4468-autotransformador-trifasico-230400v-20-kva-reversible-con-caja--8435532844686.html 
Cette référence supporte une charge de 14 KW, par contre, le fabricant des autotransformateurs indique qu'il est nécessaire de protéger la sortie de l'appareil avec un élément de coupure qui est en fonction de l'intensité maximale qu'il est capable de supporter.

Il faudrait que vous nous envoyiez une photo des caractéristiques du chargeur de batterie car la sortie de l'autotransformateur va avoir 400 Vac triphasé + neutre.

Toutefois, veuillez vérifier qu'il répond à vos spécifications. 

 Cordialement
FERNANDO on 01/10/2023 00:32:35
Question
Buenos dias, un cliente necesita instalar un transformador para conectar un punto de cargo para su coche (Renault ZOE). El coche verifica el voltaje entre el conductor neutro y la tierra. La preguntan es si podemos proponerle autotransformador para pasar de 3X230V hasta 3x400V+N y en el secundario, si el voltaje entre el neutro y la tierra es cerca de 0 ? Yo se que hay un categoriza de autotransformador que no genera neutro al mismo voltaje que la tierra...Gracias
Answer
Buenos días,

El autotransformador le permitiría pasar de 230V trifásico a 400V+N trifásico. Pero pueden pasarnos las características y potencia del cargador para ver la potencia adecuada del autotransformador que necesitarían?

Gracias,


Un saludo

ADAJUSA
BERTHOLET JC on 12/11/2022 13:21:31
Question
Bonjour Quel auto transformateur dois-je utiliser pour faire tourner ce type de moteur? LEROY-SOMER 16015-ANGOULÈME-FRANCE MOTEUR ASYNCHRONE - NFC 51.111 NOV 79 Type LS9 cast(0) kW 3 tr/min Hz Ird % YV 15 80 2840 50 ph/3 isolclass Ce S S64 A 0C Merci pour votre retour Roland
Answer
Bonjour  Si votre approvisionnement est monophasé, avec un autotransformateur que nous commercialisons, vous ne pouvez pas le faire car il s’agit de 230 Vac triphasé / 400 Vac triphasé.Nous ne disposons pas de transformateurs entrée monophasée sortie triphasée.L’option serait un convertisseur de fréquence entrée monophasé sortie 220 Vac triphasé et le moteur brancher pour le faire fonctionner à 220 Vac triphasé, mais nos convertisseurs de fréquence entrée monophasée sortie triphasée atteignent jusqu’à 2,2 KW avec ce qui serait petit pour ce moteur.L’autre option serait de changer le moteur triphasé par un monophasé des mêmes caractéristiques  https://adajusa.fr/fr/moteurs-monophases-3000-trmin-bride-b3-pattes-fort-couple-/910-moteur-monophase-3kw-4cv-230v-3000-trmin-fort-couple-de-demarrage-bride-b3-pattes-8435532809104.html  Nos salutations
Roland on 02/19/2022 14:38:30
Question
E gustaría haceros una consulta para instalaciones transformadores para unos electrodomesticos americanos. Me podrías facilitar un contacto para ponerme en contacto con vosotros.Mi teléfono es 616931733 IN SALUDO
Answer

Buenos días,

Usted tiene que realizar la consulta mediante email.

Saludos

Juan Martinez on 09/06/2018 14:42:18
Question
tengo trifasica 220v com 3.9kw puedo enchufar autotransformador para tener trifasica 400v de 12.5kva
Answer

Buenas tardes,

Lamento decirle que No, un autotransformador permite adaptar las tensiones, pero la potencia permanece constante, para ser exacto, un poquito menor debido a que el redimiento del autotransformador no es el 100%.

La unica forma de tener mas potencia, es recurrir a la compañia eléctrica o a un sistema de generación.

Saludos

pedro on 05/08/2018 13:31:58

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