Technical Specifications

Ratings CRGO - Upto 10 MVA
Applicable Standards IS, IEC, ANSI, JIS, DIN, BS Etc.
Cooling ONAN, ONAF
Insulating Fluid Mineral Oil to specification
Frequency 50 Hz, 60 Hz
Polarity As specified
Primary Voltage 11 to 33KV
Secondary Voltage Single/Dual Voltage (as per customer specification)
Winding Material Copper
Taping range Off circuit & On load tap changers (as per customer specification)
Impedance In line with applicable standards.
  • Solar - Stardelta
  • Solar - Stardelta
  • Solar - Stardelta

Special Purpose Transformers

SDTL also specialize in manufacturing Special Purpose & Custom-built transformers namely:

  • Furnace Transformers
  • Earthing Transformers
  • Welding Transformers
  • Auto Transformers
  • Rectifier Transformers
  • Dry Type Flame-proof Transformers, etc.

Standard Fittings

include Lifting Lugs, Oil level Guage, Rating & Diagram Plate, HV & LV Bushings with fittings, Skid Base/Roller Arrangement, Silica gel Breather, Drain/Filter Valves, Thermometer, Pressure Relief Device/Explosion vent.


Optional Fittings

include Terminal Connectors, Magnetic Oil Level Guage, Oil Temperature Indicator, Winding Temperature Indicator, Buchholz Relay, RTCC Panel, Condenser Type Bushing for voltage class of 33 kV & 66 kV, Off circuit Tap Switch / On-load Tap Changer with RTCC, HV / LV Cable Boxes, Disconnecting, Epoxy / Touch proof Bushings with connector, Siphon Thermo Filter, Conservator, Lightening Arrester, Arcing Horns, Protective Fuse, Secondary Circuit Breaker, Bird Guard.