MegaVolt Group — Power Transformers

For All Requirements.
For All Industries.

Custom-engineered cast-resin and oil-immersed transformers for every power class and voltage — from compact distribution units to large-scale grid and special-purpose systems.

“The best experience for industrial transformers — commitment, engineering excellence, and on-spec delivery.”

ISO 9001:2015
IEC 60076
EU 548/2014 Tier 2
IEC 60076-11
Fire Class F1
Climate Class C5
Ambient Class E4
DIN EN 50588-1
GOST on request

1994

Our Transformers Made in Germany — for more than 70 years.

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Product Range

Products & Services

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Product Range
Products & Services

Cast Resin · Standard
Cast-Resin Dry-Type Transformers

Mechanically and thermally stable against changing loads, short circuits and extreme climates. Climate class C5, ambient class E4, fire class F1. HV & LV coils cast under vacuum.

All ratings on requestUp to 36 kVAl or CuEcodesign Tier 1/2
Price
By request

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Oil Immersed · Standard
Oil Immersed Power Transformers

High-performance oil transformers with corrugated or radiator tank, hermetically sealed or with expansion tank. Full accessory suite: Buchholz relay, OTI, WTI, pressure relief.

All ratings on requestUp to 750 kVCu or AlGOST on request
Price
By request

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Cast Resin & Oil · Large Power
Power Transformers

High-capacity units for grid substations, industrial facilities, and renewable energy. ONAN / ONAF / OFAF / OFWF. Guaranteed P₀ & Pk per IEC 60076-1. Arctic rated −50 °C.

Up to 500 MVAUp to 750 kVOLTC standardEU Tier 2
Price
By request

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Cast Resin & Oil · Distribution
Distribution Transformers

Compact, efficient units for MV/LV power distribution. EU 548/2014 Tier 2 — guaranteed loss values per unit. Express delivery available.

All ratings on requestUp to 36 kVFire Class F1DIN EN 50588-1
Price
By request

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Cast Resin & Oil · Special
Converter Transformers

For 6-pulse, 12/24-pulse (double-storey) and 18-pulse (triple-storey) inverter operation. Step-up/step-down & voltage sequencing control unit designs available.

All ratings on requestUp to 52 kV6/12/18/24 pulsex2/x3 storey
Price
By request

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Cast Resin & Oil · Special
Rectifier Transformers

6-pulse, 12-pulse, 24-pulse double-storey and 18-pulse triple-storey. Cast resin and oil-immersed. Electrolysis, electroplating, traction, UPS, arc furnace DC supply.

All ratings on requestUp to 36 kVMulti-pulse DCIEC 60146
Price
By request

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Cast Resin & Oil · Special
Regulating Transformers

Grid adjustment or LV primary control via OLTC. No-load LV regulation via NLTC on LV-side. Custom-engineered to your voltage regulation specification per IEC 60214-1.

All ratings on requestUp to 36 kVOLTCNLTC
Price
By request

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Cast Resin & Oil · Special
Starting Transformers

For LV and HV motors — reduce grid load and inrush current during starting. Multi-tap LV output for selectable reduced-voltage starting levels. Cast resin and oil-immersed.

All ratings on requestUp to 36 kVLV & HV MotorsGrid Load Reduction
Price
By request

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Cast Resin & Oil · Special
Testing Transformers

For single and three-phase HV and high-current test fields. Up to 120 kV test voltage and 180 kA eff. short-time. Each unit uniquely engineered per IEC 60060.

Up to 120 kVUp to 180 kA eff.1-phase & 3-phaseHV / HC test fields
Price
By request

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Cast Resin & Oil · Special
Thawing & Pipeline Heating

For thawing frozen pipelines and frost protection via electrical resistance heating. C5 arctic-rated, high-current LV winding with selectable current taps.

All ratings on requestUp to 36 kVPipeline ThawingArctic C5 −60 °C
Price
By request

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Reactor · Choking Coil
Choking Coils & Reactors

Vacuum-cast resin and oil-immersed coils with or without iron core. Current limitation, coupling, PWM line reactors, interface transformers. IEC 60076-6.

Cast Resin & OilCurrent LimitationHarmonic Filter
Price
By request

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Custom · Special Applications
Special Applications

Mining shaft, offshore/icebreaker with air/water HX, Scott-T, Vv open-delta, autotransformers, pulse transformers. Full FEM/FEA engineering.

Extreme EnvironmentsOffshore/MiningFEM/FEA Design
Price
By request

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Certified Quality
A High-Quality Finish, as Individual as Our Customers

  • Every transformer custom-engineered to exact specification — no catalogue compromise
  • No component advances to the next production stage without testing first
  • Regular audits by reputed external test and certification institutes
  • GOST certificate available on request
  • Manufactured to ISO 9001, Ecodesign Dir. 2009/125/EC, VO 548/2014, DIN EN 50588-1
  • Cast resin transformers satisfy fire class F1, climate class C5, ambient class E4
  • Decades of offshore sector experience — classification society requirements implemented
  • FEM/FEA simulation: thermal, mechanical, acoustic and electromagnetic
  • Independent third-party FAT by KEMA Labs or TÜV Rheinland available on request
  • Factory tours and works inspections welcome
ISO 9001:2015
GOST
Ecodesign
DIN EN 50588-1
Fire Class F1
Climate Class C5

“From the enquiry through to final delivery — we are available as a competent engineering partner. We know the requirements of your transformer inside out. That’s what makes our service so efficient.”

MegaVolt Group — Engineering Team

Made-to-measure engineering. Do you need a transformer that hangs upside down in a mine shaft, or one equipped with air/water heat exchangers designed for an icebreaker? We plan every product in detail using FEM/FEA software — thermal, mechanical, acoustic, and electromagnetic simulation before a single winding is wound.

Full Product ClassificationAll Transformer Types

Power Transformers for Special Purposes

Starting Transformers
Testing Transformers
Regulating Transformers
Special-Purpose Transformers
Autotransformers
Pulse Transformers
Rectifier Transformers
Single-Phase Transformers
Thawing Transformers
Converter Transformers

Choking Coils & Reactors

Cast Resin — Vacuum Cast
Oil Immersed
With Iron Core
Without Iron Core
Current Limitation
Coupling Coils
Harmonic Filter Reactors
PWM Line Reactors

Standard & Large Power Transformers

Cast-Resin Dry-Type
Oil Immersed Power
Distribution Transformers
Three-Phase Transformers
High Voltage up to 750 kV
Up to 500 MVA

Converter & Rectifier Transformers

6-Pulse Inverter
12-Pulse Double-Storey
18-Pulse Triple-Storey
24-Pulse Double-Storey
Step-Up / Step-Down
Voltage Sequencing Control

Exotic, Renewable & Custom Transformers

Scott-Transformer
Vv Open-Delta
Offshore / Icebreaker
Mining Shaft — Inverted
Wind / Solar Step-Up
BESS Grid Interface
Classification Society Certified
Air/Water Heat Exchanger

About us

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Let’s keep in touch