440/415/380/220 VAC


The REVERSIBLE THREE-PHASE AUTOTRANSFORMERS PHONOVOX are apparatus which have been designed chiefly to change voltages in three-phase networks. Raise or reduce the mains voltage in order to provide the necessary voltage to the associated equipments.

Certificaciones trifásicos


  • Dry type transformer.
  • Norms: According to EN 61558-2-13.
  • Natural cooling by air.
  • Transformer for indoor use only.
  • Reversible Voltages 440/415/380/220 V AC.
  • Windings: Class H (180º).
  • Insulation Class F
  • For continuous duty.
  • Windings vacuum impregnated.
  • Frequency: 50-60 Hz. or 60 Hz.
  • Degree of protection: IP-23.
  • Type connection (with access to neutral)
  • Class I.
  • Not resistant to short-circuits.
  • Dielectric Strength: 2500 V.
  • Two cable glands are included for installation.
  • Models from 5 Kva to 160 Kva.
  • Models from 5 Kva to 20 Kva have two options for holing (side and in front) to place the cable glands.

*Other voltages arrangements available according to customers requirements
*All specifications listed in this brochure are subject to change without notice

Technical specifications

Technical specifications