Reliable and efficient transformer solutions

• 225 to 20,000 kVA

• Standard Gauges & Relays

• Lifting Lugs

• 2400 – 69,000 V Primary voltages

• 220Y/127 – 34,500 V Secondary voltages

• 3-phase

• 60 or 50 Hz

• ONAN, ONAN/ONAF, KNAN, KNAN/KNAF

• Mineral oil, FR3, Silicone, Beta Fluid, Alpha Fluid

• Aluminium/Copper Windings

• Standard impedance according to ANSI C57.12.3

• Multi-LV transformers

• Multi-CCA transformers

• Low-noise transformers

• K-rated transformers

• External Flange/Throat

• Five-limb transformers

• Special paint for marine or corrosive atmosphere

• Non-standard Ambient conditions (temperature, seismic rating, wind, altitude etc)

Complete, in-house production testing per ANSI C57.12.90 and customer specifications as applicable, including:

• Ratio tests on rated voltage connection and tap connections

• No-load loss at rated voltage

• Resistance Measurement on all windings

• Polarity & Phase Relation tests on the rated voltage connection

• Impedance & Load loss

• Induced Potential test

• Excitation Current Test

• Pressure Leak Test

• Applied Potential Tests

• Applied Potential Tests

• Sound measurement test

• Switching Surge

• Partial Discharge

Following special type-tests to be done either in-house or at an independent accredited laboratory based on request

• Switching Surge

• Temperature Rise Test (including thermal imaging)

• Short-Circuit Test

• Sweep Frequency Response

• American National Standards Institute (ANSI)

• Institute of Electrical and Electronics Engineers, Inc. (IEEE)

• National Electrical Manufacturers Association (NEMA)

• Department of Energy (DOE)

• UL Listing

• 100 kva – 5,000 kva

• 600 V to 34.5 kV

• 220°C insulation system

• Indoor – NEMA 1, Outdoor – NEMA 3R/4

• Aluminium/Copper Windings

• 3-phase

• 60 or 50 Hz

• Type of core

  • Barrel wound

  • Section wound

  • Disk wound

Complete, in-house production testing per ANSI C57.12.90

• Routine Tests

  • Resistance test

  • Polarity & phase relation test

  • Turns ratio test at all tap positions

  • No-load loss & exciting current test

  • Impedance and load-loss test

  • Applied potential test

  • Induced potential test

  • Impulse test

  • Sound test

• Special tests

  • Temperature test

  • Partial discharge test

• American National Standards Institute (ANSI)

• Institute of Electrical and Electronics Engineers, Inc. (IEEE)

• National Electrical Manufacturers Association (NEMA)

• Department of Energy (DOE)

• UL Listing

• Up to 500 MVA

• Upto 765 KV voltages

• 3-phase

• 60 or 50 Hz

• Surge Arresters

• OLTC on HV/LV for HV/LV variation

• Insulating mineral oil as per IS/IEC

• Drain/Filter/Sampling valves

• Standard Gauges & Relays

• Lifting Lugs

• Current transformers

• ONAN, ONAN/ONAF, ONAN/ONAF/ONAF, OFAF

• NEMA 3/4 Control Cabinet

• C4 corrosion

• Spare parts - Gaskets

• Valves, Paints, & Toolkit

• Flanged roller assembly to suit standard rail gauge

• Multi-CCA transformers

• Low noise level Transformers

• OFAF Cooling using oil pumps or compact unit coolers

• OFWF Cooling using oil pumps & heat exchangers

• Air led cable box up to 33 KV

• Oil filled cable box up to 400 KV

• Special paint for marine or corrosive atmosphere

• Sealed Tank Preservation Systems

• High-Seismic-Rating zone

• Safe Harbor

• Audible Sound level measurement at the factory

• Dew Point in degrees Fahrenheit of air in the tank

• Zero Phase Sequence Impedance Test

• Power Factor

• Pressure of air in the tank

• Core Ground Resistance

• SFRA at the factory

• SFRA prior to Shipping (loaded on trailer)

• Sweep Frequency Response Analysis on-site

• DGA (Dissolved Gas Analysis) – before and after dielectrics & each sample for temperature rise tests or otherwise

• Temperature Rise Test (Base & Top rating only)

• Doble Excitation Test

• Lightning Impulse Test as per IEEE C57.12.90.

• Applied Potential Test as per IEEE C57.12.90.

• Induced Voltage Test as per IEEE C57.12.90.

• Partial Discharge Measurement Test

• Switching Impulse Test (if applicable) as per IEEE C57.12.90

• Ductor Test

• Routine Test on all units as per IEEE at the factory

  • Resistance measurement

  • Ratio tests

  • Polarity and Phase Relation

  • Insulation Resistance Measurement

  • Insulation Power Factor

  • Impedance and Load loss measurement

  • Excitation Losses and percentage excitation current measurement

  • Percent Impedance and Load Loss Measurement

• Power Factor and capacitance for Bushing (DGA if applicable)