SERIE TTFK

POLYLUX’S SERIE TTFK

K factor three phase transformers

In the TTFK series, we find isolation transformers for three-phase networks with a high level of harmonics. They have a 400V three-phase input and a 400V three-phase output and a rating range as from 1kVA up to 100kVA.

These “k” factor transformers are used to withstand the overheating produced by harmonics from non-linear loads and it is possible to manufacture models with different “K” values.

A k=13 factor transformer is used when the harmonic load represents 30% of the total load.

A k=20 factor transformer is used when the harmonic load represents 60% of the total load.

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

  • TTFKX / TTFK2X: IP00
  • TTFKW / TTFK2W: IP23
  • TTFKZ / TTFK2Z: IP54/65

Constructive features:

  • All the transformers are dipped in anti-flash varnish and then compacted in the oven. This process increases the insulation grade, reduces noise and provides anti-moisture, waterproofed 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.

TTFKX
Three-phase isolation transformers for installations with a 30% harmonic level. Dry type k13 factor with anti-flash varnish finished for maximum protection, insulation, noise and vibration reduction.
Rating
From 10 kVA to 500 kVA
Input voltage
400 V
Output voltage
400 V
Protection degree
IP-00

Frequency
50/60 Hz
k Factor
13
THDI (<=)
0,6
Connection group
Dyn11
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
TTFKW
Three-phase isolation transformers for installations with a 30% harmonic level. Dry type k13 factor finished in anti-flash varnished in IP23 metal enclosure with protection to prevent direct contact with electrical parts.
Rating
From 10 kVA to 500 kVA
Input voltage
400 V
Output voltage
From 400 V to 400 V
Protection degree
IP-23 / IK-08

Frequency
50/60 Hz
k Factor
13
Cover
Metal enclosure RAL 7035 (cat. C3 ISO 12994-2)
THDI (<=)
0,6
Connection group
Dyn11
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
TTFKZ
Three-phase isolation transformers for installations with a 30% harmonic level. Dry type k13 factor with anti-flash varnish finished in IP54/65 metal enclosure with protection for outdoor installation.
Rating
From 10 kVA to 500 kVA
Input voltage
400 V
Output voltage
400 V
Protection degree
From IP-65 / IK-10 to IP-54 / IK-10

Frequency
50/60 Hz
k Factor
13
Cover
Metal enclosure RAL 7035 (cat. C4 ISO 12994-2)
THDI (<=)
0,6
Connection group
Dyn11
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
TTFK2X
Three-phase isolation transformers for installations with a 60% harmonic level. Dry type k20 factor with anti-flash varnish finished for maximum protection, insulation, noise and vibration reduction.
Rating
From 10 kVA to 400 kVA
Input voltage
400 V
Output voltage
400 V
Protection degree
IP-00

Frequency
50/60 Hz
k Factor
20
THDI (<=)
0,9
Connection group
Dyn11
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
TTFK2W
Three-phase isolation transformers for installations with a 60% harmonic level. Dry type k20 factor finished in anti-flash varnished in IP23 metal enclosure with protection to prevent direct contact with electrical parts.
Rating
From 10 kVA to 400 kVA
Input voltage
400 V
Output voltage
400 V
Protection degree
IP-23 / IK-08

Frequency
50/60 Hz
k Factor
20
Cover
Metal enclosure RAL 7035 (cat. C3 ISO 12994-2)
THDI (<=)
0,9
Connection group
Dyn11
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
TTFK2Z
Three-phase isolation transformers for installations with a 60% harmonics rate. Dry type k20 factor with anti-flash varnish finished in IP54/65 metal enclosure with protection for outdoor installation.
Rating
From 10 kVA to 315 kVA
Input voltage
400 V
Output voltage
400 V
Protection degree
From IP-65 / IK-10 to IP-54 / IK-10

Frequency
50/60 Hz
k Factor
20
Cover
Metal enclosure RAL 7035 (cat. C4 ISO 12994-2)
THDI (<=)
0,9
Connection group
Dyn11
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

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.