Standard Fittings

Power Transformer

Techno Tech Energy manufacturers power transformers from 3.0 MVA 33/11, KV Upto 15 MVA, 66 KV voltage class. All transformers can be supplied with the desired tappings for positive / negative voltage variation either with OFF circuit or ON load tap changers. We can also manufacture intermediate sizes with non standard voltage ranges as per customer requirements. We currently in operation in several power utilitiess playing an important role in efficient transmission and distribution of electricity.

Technical Specification

  • Duty, Type Outdoor / Indoor, Pole or Ground Mounted

  • Voltage Class 11, 22, 33, 66110 KV or any Specific

  • NNo of phase 3 phase 4, Frquency 50/60 Hz

  • Vector Group Dyn 11 or YND 11 or YNyn 0 or any specific

  • Insulating Fluid PCB Free Mineral Oil, both inhibited & uninhibited, as per IS/IEC and customer requirement
    Class of Insulation Class A

  • Off circuit tab changer to provide ±5% in 5 Step, ±7.5% in &Step taps in step of 2.5% and customer requirement.

  • On load tap changer to provide ±5% to -15% tabs in steps o 1.25% as standard range & also custom built for any

  • other ranges, OLTC will be internally/externally mounted as per the requirement.

  • Winding Material Copper with multi paper covering (MPC).

  • Painting Epoxy, Polyurethane ore customer specific.


Protective Devices

  • Buchholz Relay with Alarm and Trip Contact

  • Oil Temperature Indicator(OTI) with Alarm an Trip Contact

  • Winding Temperature Indicatore(WTI) with Alarm and Trip Contact

  • Magnetic Oil level gauge(MOLG) with Alarm Contact

  • Marshalling Box to House O.T.I and W.T.C.

Standard Fittings

  • Rating & Diagram Plate

  • Lifting Lugs

  • Oil Conservation with

  • Drain Plug

  • Oil Level Indicator

  • Top Filter Valve

  • Cooling Radiators

  • Earthing Terminals

  • Thermometer Pocket

  • Explosion Vent with Diaphragm

  • Bottom-Filter Valve

  • Silica Gel Breather

  • LV & HV Side Cable Box

Optional Accessories on Request

  • Neutral C.T.

  • Shut – off Valves

  • Annunciation Window

  • Pressure Release Valve

  • Windowing temperature

  • indicator and oil temperature indicator with indication

  • RTDs for winding temperature measurement

  • Oil preservation system through air cell/thermosphyon filter

  • Neutral earthing bar with epoxy supports.


  • cost effectiveness and reliability
  • Designed for 25 years of trouble-free performance.
  • Design conforms to IS 2026, IEC 60076, ANSi and other relevant standards
    Low Power loss and Low Noise
  • Designed to withstand electrical impulses and thermal and dynamic stresses
  • Optimum utilization of active materials for compactness.Modern manufacturing techniques ensure
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