Cast Resin Transformers

General Features

STD Cast Resin Transformers have at least one of the two windings embedded on an autoclave mould, at vacuum values close to zero with epoxy resin. The other winding can also be cast in H class.

STD Cast Resin Transformers have reached a high degree of reliability thanks to the technological advances in recent years. Our production E2, C2, F1, but also E3 (IEC 60076-16) and C4 (GOST-R), can be used in the presence of a high humidity and pollution rate, low installation temperatures even down to -60°C, therefore eliminating the problems related to the risks of fire and emissions of toxic and harmful substances in case of fire.

As they are entirely built with insulating, flame retardant and self-extinguishing materials, they are completely free from all restrictions that should normally be applied to flammable equipment with a danger of spreading fire.

  • Generation Step-up Units (GSU)
  • Transmission Substations
  • Distribution Substations
  • Industrial Plants
  • Oil & Gas
  • Cement
  • Chemicals & Petrochemicals
  • Rolling Mills
  • Mining
  • Desalination Plants

Main Characteristics

Power Rating : from 50kVA up to 2500kVA

Voltage Level : from 1,1kV up to 36kV

Frequency : 50 or 60Hz

Vector Group : single phase or three phase transformers with possibility of star or delta connections in any of its windings.

Number Of Windings : possibility to manufacture transformers with primary + secondary, double secondary and any other type according to requirements of customer.

Cooling : according to EN/IEC 60076, AN, AF

Standard Accessories
  • Earthing Terminals
  • Low Voltage Bushings
  • Off Load Tap Changer
  • Safety Valve
  • Terminal Box
  • Filling Tap
  • Conservator (if not hermetic)
  • Buchholz Relay
  • Lifting Lugs
  • Thermometer pocket
  • Medium Voltage Windings
  • Bi-Directional Rollers
  • Magnetic Core
  • Oil discharge and extraction valve
  • Low Voltage Windings
  • Clamps
  • Oil level indicator (if not hermetic)
  • Medium Voltage Bushings
  • Silica Gel Breather (if not hermetic)
  • Tank with Corrugated Wall
  • Plug-in connectors (upon request)
  • Earthing point on tank
  • Name plate
  • Jacking Pods
Accessories Upon Request
  • DGPT2 or RIS or DMCR (if hermetic)
  • LV Extension Bars
  • Safety Valve with Contacts
  • Winding Temprerature Indicator
  • Cable Box (MV / LV)
  • Oil Level Indicator with Contacts (if not hermetic)
  • PT100 sensors for oil temperature control (PTO)
  • Others (Contact Us)