ZTelec Yuguang Furnace Transformers: Complete Classification for Industrial Heating Systems

12-04 2025 | By:

Industrial furnace transformers are specialized power transformers used to supply heating furnaces across metallurgy, heat treatment, and industrial manufacturing. ZTelec Yuguang Transformer Factory, as a professional transformer manufacturer with over 20 years of experience, provides a full range of oil-immersed furnace transformers from 100 kVA to 80 MVA, supporting customized voltage regulation, cooling methods, and furnace-specific designs.

What Is an Industrial Furnace Transformer?

An industrial furnace transformer delivers controlled, adjustable voltage to heating equipment with unique load characteristics—such as low resistance, ultra-high current, or sharply changing impedance. Yuguang furnace transformers are engineered for high short-circuit strength, low loss, and stable long-term operation, making them suitable for global steel plants, foundries, and heat-treatment workshops.

1. Resistance Furnace Transformer (By ZTelec Yuguang)

Used in:

• Mechanical parts heating

• Heat treatment

• Powder metallurgy sintering

• Non-ferrous metal melting

• Salt-bath furnaces

Resistance furnaces often have low or significantly varying heating-element resistance. Therefore, Yuguang resistance furnace transformers provide stable step-down voltage and precise adjustment to match the heating curve.

Cooling Types

• Small capacity: dry-type, natural air cooling

• Medium capacity: oil-immersed, ONAN cooling

• Large capacity: forced oil circulation + water cooling

2. Arc Furnace Transformer (Steel-Making Furnace Transformer)

ZTelec Yuguang arc furnace transformers are widely used in electric arc steel-making equipment.

Key Features

• High capacity: 5 MVA – 80 MVA

• Wide secondary voltage adjustment

• High output current: 5,000–40,000 A

• Withstands 20% overload for 2 hours

• Designed with high leakage impedance to limit short-circuit current

Voltage Regulation Options

• On-load tap changer (OLTC) for continuous voltage control

• Off-load tap changer for medium and small furnaces

3. Induction Furnace Transformer

Induction furnaces melt ferrous and non-ferrous metals using electromagnetic induction. Yuguang induction furnace transformers provide optimized coupling for high-frequency or power-frequency melting systems.

Types

• Core-type induction furnace

• Coreless induction furnace

A core-type design uses a single-turn secondary winding, enabling extremely high induced current for efficient melting.

4. Structural Advantages of ZTelec Yuguang Furnace Transformers

▪ Premium Magnetic Core

• Grain-oriented silicon steel

• Automatic step-lap cutting

• 45° full miter joints

• No punching or strap binding

▪ Advanced Coil & Insulation System

• Excellent axial/radial mechanical strength

• High short-circuit withstand capability

• Overload-friendly thermal design

• Low loss per IEC/GB standards

▪ Flexible Voltage Regulation Designs

• OLTC for large furnaces (no series reactor)

• Off-load tap changer for medium-small units

• Optional series reactor to modify furnace impedance

Industrial Furnace Transformer Specifications 

Why Choose ZTelec Yuguang Furnace Transformers?

ZTelec Yuguang offers:

• 20+ years manufacturing experience

• Full production line for oil-immersed furnace transformers

• Support for up to 80 MVA custom furnace transformers

• Global installations in steel plants, foundries, aluminum factories, heat-treatment plants

• Fast delivery & international certification (IEC, CE, ISO, SASO, SONCAP, etc.)

Industrial furnace transformers—including resistance furnace transformers, arc furnace transformers, and induction furnace transformers—play a critical role in modern metallurgy and industrial heating. ZTelec Yuguang Transformer Factory provides reliable, customizable, and high-performance transformer solutions tailored to a wide variety of industrial furnace applications.

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