Resonant 50 MVA 132 kV substation power transformer

Resonant / TransformersA — 50 MVA / 132 kV substation unit

ReliablepowerforEveryIndustry.

Substation and industrial transformers with verified loss guarantees, extreme dielectric integrity, and 30+ years of continuous grid operation.

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Voltage class: 0kV
Max capacity: 0MVA
BIL impulse tested: 0kV
Partial discharge: <0pC

Power Transformers
Distribution
Dry-Type Cast Resin
Oil-Immersed
Arc Furnace Duty
Renewable Inverter Duty

Engineered in Vadodara
Tested to 650 kV BIL
IEC 60076
IS 2026
IEEE C57
Partial discharge < 10 pC

[ 02 ] Catalogue — 05 product families

Solutions for
every application.

Engineered solutions for modern power networks, demanding industries, and critical infrastructure.

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Primary power class01 / 04

50 MVA 132 kV Power Transformer

Engineered for transmission substations and utility grids — 16-step on-load tap changer, low-noise radiator cooling banks, and full Buchholz protection.

Cooling: ONAN / ONAF
Ratio: 132 / 33 kV
Vector: Dyn11 / YNd11
Standard: IEC 60076 · IS 2026

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Cast resin02 / 04

2500 kVA Dry-Type

Epoxy cast resin coils engineered for zero fire risk in commercial high-rises, hospitals, and high-density data centers.

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Distribution03 / 04

1000 kVA Distribution

Corrugated fin tank technology delivering maximum heat dissipation in a compact footprint with a low no-load silicon steel core.

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Special duty — 55,000 A04 / 04

30 MVA Arc Furnace

High-current water-cooled copper busbars engineered for repeated short-circuits and severe cyclic metallurgical shocks.

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[ Interactive engineering visualization ] Select a component

Inside the machine.

Core geometry, continuously transposed copper windings, and vacuum-sealed fluid containment — part by part.

3D cutaway illustration of an industrial power transformer showing core and windings

Fig. — Cutaway, hover a marker

Continuously Transposed Conductors (CTC) wound in disc and helical configurations with thermally upgraded kraft paper and high-density pressboard spacers.
Material
99.99% ETP / OFHC Copper (CTC)
Standard
IEC 60076-5 (Short-Circuit Tested)
Performance
101% IACS Conductivity
Rating
Class A (105°C) / Class F (155°C)
Performance guaranteeHigh radial and axial clamping rigidity withstands severe electromagnetic forces during external through-fault short circuits.

Request custom sizingElectromagnetic FEA

[ 03 ] Engineering → Manufacturing → Testing

From simulation to impulse.

Explore capabilities

01 / DesignFEA

Electromagnetic Core Simulation

Step-lap mitered core stacking using laser-scribed prime CRGO silicon steel to minimize hysteresis losses and excitation currents.

02 / DesignCFD

Computational Fluid Dynamics

Thermal modeling of transformer oil velocity and radiator convection to eliminate localized winding hotspots.

03 / BuildInsulation

Dielectric Insulation & Impulse Grading

High-density pre-compressed pressboard barriers guaranteeing partial discharge levels strictly below 10 picocoulombs.

04 / Verify100% routine

Voltage Ratio & Vector Group

Verified phase displacement, polarity, and transformation ratio on every unit before it leaves Vadodara.

05 / VerifyType test

Lightning Impulse Withstand

Full wave 1.2/50 μs impulse surge applied from a multi-stage Marx generator up to 650 kV, with digital oscillograms.

06 / VerifyDielectric

Partial Discharge & Tan Delta

Discharge levels verified strictly below 10 picocoulombs. Insulation power factor logged for the lifetime record.

[ 03 ] Engineering → Manufacturing → Testing