Three-phase power transformers with the power between 40 and 1600 kVA class „H”


Power transformers are assigned for supplying power electronic devices, and for application in other industrial branches. In standard design, the transformers are adjusted to fastening by means of screwed angles.
If agreed, the transformers may have more tappings. The windings terminals may be placed on one side only, or on both sides of a transformer. Upon request, the transformers may be assembled in enclosures with the protection degree of IP 23, IP 44 and IP 54 with the possibility to insert supply cables through glands. Standard enclosures have powder coating - colour RAL 7032.

Technical data

Design Power transformers are produced in accordance with requirements of: EN/IEC 60726; EN/IEC 60076
Insulation class H(180°C)
Climatic class
/environmental class

C1/E0 - land design; C2/E1 - maritime design

Ambient temperature 40oC
Protection degree IP 00
Protection class I
Frequency 50/60 Hz
Vector group Dyn5 - standardowo
Primary voltage up to 1000 V
Secondary voltage up to 1000 V
Terminals screw terminal blocks or cable lugs or copper bus bars