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