PTU | QTU | TU SERIES

POLYLUX’S PTU | QTU | TU SERIES

Single phase ultra-isolating EI transformers (≤ 5000 VA)

Single-phase 230V input and output ultra-isolation transformers, designed for environments with high electrical noise, where a shield is needed to ensure good signal quality.

This equipment has the option of one or three electrostatic screens that attenuate noise and parasites depending on the level of electrostatic shields and include a rating range as from 40VA up to 4000VA.

Some of its utilities:

  • The isolation of circuits, especially low noise installations.
  • To change the neutral regime of the installations, being able to go from a two-phase network to a single-phase network or vice versa (this case implies the generation of the artificial neutral).
  • In installations with a certain level of electrical noise.
  • Being able to isolate the most sensitive devices in a control panel.

Constructive features:

  • Anti-flash dip varnishing. Ensures greater compaction, isolation and noise elimination.
  • Connection terminals made of copper, welded and inserted in blocks to prevent hazards caused by expansion that may lead to poor connection.
  • Noise and interference attenuation according to the level of 1 or 3 electrostatic screens.

PTU
Single phase dry type ultra-isolation transformers, finished in anti-flash varnished in IP20 enclosure, resin filled with protection against direct contact with electrical parts and electrostatic screens (up to 2500 VA 1 screen or 2000 VA 3 screens).
Rating
From 40 VA to 4000 VA
Input voltage
230 V
Output voltage
230 V
Protection degree
IP-20

Electrostatic Screen
From 1 (65 dB attenuation at 10 kHz) to 3 (80 dB attenuation at 10 kHz)
Frequency
50/60 Hz
Cooling
ANAN
Ambient temperature
45ºC
Temperature rise
Class B – 130ºC
Insulation
Class H – 180ºC
Windings
Class HC – 200 ºC
Test voltage
4 kV (1 min, 50 Hz)
Standards
IEC/EN/UNE-EN 61558, CE
Mounting
From Screws and DIN Rail to Screws
QTU
Single phase dry type ultra-isolation transformers, finished in anti-flash varnished in IP20 enclosure, resin filled with protection against direct contact with electrical parts and electrostatic screens (up to 1000 VA 1 screen or 800 VA 3 screens).
Rating
From 40 VA to 2000 VA
Input voltage
230 V
Output voltage
230 V
Protection degree
IP-20

Electrostatic Screen
From 1 (65 dB attenuation at 10 kHz) to 3 (80 dB attenuation at 10 kHz)
Frequency
50/60 Hz
Cooling
ANAN
Ambient temperature
45ºC
Temperature rise
Class B – 130ºC
Insulation
Class H – 180ºC
Windings
Class HC – 200 ºC
Test voltage
4 kV (1 min, 50 Hz)
Standards
IEC/EN/UNE-EN 61558, CE
Mounting
From Screws and DIN Rail to Screws

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.