AUT SERIES

POLYLUX’S AUT SERIES

Three phase autotransformers for voltage changing

Our AUT series is made up of three-phase autotransformers with 400V input and 230V output, being able to work reversibly and with a rating range as from 1kVA up to 1000kVA.

These autotransformers are designed to adapt the network voltages to the operating voltage of the equipment, as well as to work continuously and at maximum performance 365 days a year, thus ensuring the supply to the facilities or equipment they feed.

We can find different versions depending on their degree of protection:

  • AUTX: IP00
  • AUTW: IP23
  • AUTZ: IP54/65

Constructive features:

  • All the autotransformers are dipped in anti-flash varnish and then compacted in the oven. This process increases the insulation grade, reduces noise and provides anti-moisture, waterproof protection.
  • All the connection terminals are made of copper. For transformers with aluminium coils, internal bimetallic AL-CU connections are made by welding with filling and sealing material to ensure a safe, long-lasting connection.
  • The high-power autotransformers are made with format cores and low loss properties, thus contributing to increase their performance.

AUTX
Three-phase dry type reversible autotransformers with anti-flash varnish finished for maximum protection, insulation, noise and vibration reduction.
Rating
From 1 kVA to 1000 kVA
Input voltage
400 V
Output voltage
230 V
Protection degree
IP-00

Frequency
50/60 Hz
Connection group
YN0
Cooling
AN
Ambient temperature
45 ºC
Temperature rise
From Class F – 155ºC to Class H – 180ºC
Insulation
Class H – 180ºC
Windings
Class HC – 200 ºC
Test voltage
3 kV (1 min, 50 Hz)
Standards
From IEC/EN/UNE-EN 61558, CE to IEC/EN/UNE-EN 60076, CE
AUTW
Three-phase dry type reversible autotransformers, finished in anti-flash varnished in IP23 metal enclosure with protection to prevent direct contact with electrical parts.
Rating
From 1 kVA to 1000 kVA
Input voltage
400 V
Output voltage
230 V
Protection degree
IP-23 / IK-08

Frequency
50/60 Hz
Connection group
YN0
Cover
Metal enclosure RAL 7035 (cat. C3 ISO 12994-2)
Cooling
From ANAN to ANAF
Ambient temperature
45 ºC
Temperature rise
From Class F – 155ºC to Class H – 180ºC
Insulation
Class H – 180ºC
Windings
Class HC – 200 ºC
Test voltage
3 kV (1 min, 50 Hz)
Standards
From IEC/EN/UNE-EN 61558, CE to IEC/EN/UNE-EN 60076, CE
AUTZ
Three-phase dry type reversible autotransformers, with anti-flash varnish finished in IP54/65 metal enclosure with protection for outdoor installation.
Rating
From 1 kVA to 1000 kVA
Input voltage
400 V
Output voltage
230 V
Protection degree
From IP-65 / IK-10 to IP-54 / IK-10

Frequency
50/60 Hz
Connection group
YN0
Cover
Metal enclosure RAL 7035 (cat. C4 ISO 12994-2)
Cooling
From ANAN to ANAF
Ambient temperature
45 ºC
Temperature rise
From Class F – 155ºC to Class H – 180ºC
Insulation
Class H – 180ºC
Windings
Class HC – 200 ºC
Test voltage
3 kV (1 min, 50 Hz)
Standards
From IEC/EN/UNE-EN 61558, CE to IEC/EN/UNE-EN 60076, CE
Includes
Silent blocks

Special Manufacturing

We build transformers and inductive elements tailored to your needs.

Tell us about your needs and our engineers will create a solution adapted to your company.