Reliable Power Transformers
Manufacturer of high-efficiency dry-type and oil-immersed transformers for industrial projects.
Rectifier · Furnace · Phase-Shifting · Harmonic Mitigation
Special & Custom Transformers
100Power Special & Custom Transformers are engineered-to-order units — rectifier, furnace (EAF), phase-shifting and harmonic-mitigation transformers — built for smelters, steel plants and hyperscale data centers, with documented project references up to 120 MVA.
Engineered solutions for demanding industrial applications: rectifier transformers for electrochemical processes, furnace transformers for steel and ferroalloy production, phase-shifting and harmonic filtering transformers for power quality management.
Discuss Your Application →Specialized Transformer Categories
Custom-engineered for specific industrial processes and power quality requirements
Rectifier Transformers
High-current, low-voltage output for electrochemical processes including aluminum smelting, chlor-alkali production, electroplating, and hydrogen electrolysis. Designed for 6/12/24-pulse rectifier systems with extended vector groups.
CapacityUp to 100MVA
DC Output50V – 1000V DC
CurrentUp to 150kA
Furnace Transformers
Heavy-duty transformers for electric arc furnaces (EAF), ladle furnaces (LF), and submerged arc furnaces (SAF). Designed to withstand extreme load cycling, short-circuit stresses, and harsh thermal conditions in steel and ferroalloy production.
Capacity10MVA – 200MVA
Voltage Range35kV – 220kV / 100V – 1000V
FeaturesMulti-tap OLTC, 32 Steps
Phase-Shifting Transformers
Control power flow between parallel transmission lines or interconnected grids. Used by utilities and grid operators to optimize power transfer, reduce loop flows, and manage congestion in meshed networks.
TypeSymmetrical / Asymmetrical
Phase Shift±30° (adjustable)
VoltageUp to 400kV
Harmonic Mitigation Transformers
Reduce harmonic distortion from VFDs, UPS systems, and non-linear loads. Phase-shifting designs (Δ-Y with zig-zag, 18/24-pulse configurations) cancel specific harmonic orders, improving power quality and equipment lifespan.
THD Reduction< 5% THDi
Configuration12/18/24 Pulse
ApplicationsVFD, UPS, Data Centers
Project Case Studies
Real-world applications of our specialized transformer solutions
Rectifier Transformer
60MVA Aluminum Smelter – Saudi Arabia
24-pulse rectifier system with 150kA DC output for aluminum electrolysis. Custom vector group design for THD compliance.
Furnace Transformer
120MVA EAF Steel Plant – Indonesia
Electric arc furnace transformer with 32-step OLTC for precise voltage control during melt cycles. ONAN/OFAF cooling.
Harmonic Mitigation
5MW Data Center – Singapore
18-pulse autotransformer system for UPS power conditioning. Achieved <5% THDi meeting IEEE 519 requirements.
Have a Unique Application Challenge?
Our engineering team has decades of experience designing custom transformer solutions for the most demanding industrial applications. Share your process requirements and let us propose an optimized solution.
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