Reactor Transformers

📊 KATOY Reactor Transformers

A reactor transformer (sometimes called a transformer with a reactor, or series reactor transformer) is a specialized transformer that includes or works in conjunction with a reactor (inductor) to control current, voltage, or power quality in an electrical system.

Katoy can manufacturer Reactor Transformers to any specification required for your application.


⚡ What Is a Reactor?

A reactor is essentially a coil of wire with inductance that resists changes in current. It limits fault current, filters harmonics, or helps manage voltage fluctuations.


🧩 What Is a Reactor Transformer?

A reactor transformer combines the functions of both:

  • A transformer — to change voltage levels.
  • A reactor — to limit or smooth current.

This can be done by:

  1. Integrating a reactor into the transformer windings or core.
  2. Connecting a reactor in series with the transformer in the system.

🧲 Types and Uses

1. Series Reactor Transformer

  • A reactor is connected in series with the transformer’s output.
  • Use: Limits inrush or short-circuit current; protects equipment.

2. Shunt Reactor Transformer

  • A reactor is connected across (parallel) the power line.
  • Use: Absorbs reactive power in long transmission lines; stabilizes voltage.

3. Load Balancing Reactor Transformer

  • Helps balance uneven loads across a three-phase system.

4. Harmonic Filtering Transformer

  • Reactor included to block or reduce harmonics in power systems.

🏭 Where It’s Used

  • Electrical substations
  • High-voltage transmission lines
  • Power plants
  • Industrial motor drives
  • Reactive power compensation systems
  • Renewable energy systems (wind/solar inverters)

🔧 Benefits

Protects downstream equipment
Limits fault current
Improves voltage regulation
Reduces harmonics
Enhances power factor