Choose your region and language

Go

Menu

Reliable insulation and components for transformer performance

Transformer Insulation and Components

Hitachi Energy offers the world’s broadest portfolio of safe and reliable transformer insulation and components, designed to meet the evolving needs of the power industry. Transformers are essential components of our electric power infrastructure, and their components—such as bushings, tap changers, insulation materials, accessories, and other consumables—play a critical role in ensuring reliable and safe operation.

We continually address major transformer technology trends and market challenges with innovative products that meet or exceed today’s demanding standards. As a leading component manufacturer, Hitachi Energy invests in research and development to deliver competitive solutions that enhance equipment safety, power reliability, and efficiency, while minimizing environmental impact.

For over 100 years, we have been the supplier of choice for original equipment manufacturers and distributors of power and distribution transformers. Our comprehensive range of products and services supports everything from replacements to upgrades—mechanical to digital—ensuring that we meet the diverse needs of an evolving industry.

Why Transformer Insulation Matters

High-quality insulation safeguards transformers against extreme electrical, thermal, and mechanical stresses. This protection extends the life span of equipment and minimizes downtime, making insulation a cornerstone of power system stability.

Our comprehensive range of components and insulation

Transformer Insulation and Components Portfolio

Transformer Bushings
Composite insulators
Tap-changers
Measurement and Monitoring Devices
De-energized tap-changers and switches
Protection and Safety Devices
Preservation and Mechanical Accessories
Insulation components and materials

Explore our Interactive Tools

Discover Hitachi Energy’s interactive tools designed to help you select and configure transformer insulation and components with ease. These tools provide quick access to technical data, product specifications, and application insights—empowering you to make informed decisions for reliable transformer performance and grid stability.
Ordering data software for tap-changers and motor-drives
As a transformer designer, you constantly face the challenge of choosing the right accessories for the transformers.
Tap-changer and bushing selection program Compas
Selecting components can be a challenging task for transformer design engineers, especially during the tendering stage as time can be of the essence.
Bushing searches and Certified Test Reports

Hitachi Energy has introduced many online utilities to facilitate your search for transformer bushings.

Customer log-in for the Alamo Power Transmission Online

Check your order history to see if any orders have been shipped out instantly.

Alamo Vendor Online

Welcome to the Alamo Tennessee Vendor Information Online

Gas Detector Relay (GDR) Test Report Search

Search for GDR test reports by serial number

Get to know more

Delivery times for transformer insulation and components

Delivery information is available for tap-changers and bushings from our different production sites.

Transformer insulation and components brochure

The world's broadest and most reliable portfolio of transformer insulation and components.

Transformers
Discover advanced transformer solutions for efficient and sustainable power systems. Explore our portfolio and digital innovations.

Why choose our Transformers Insulation and Components solutions

Hitachi Energy’s transformer insulation and components deliver superior electrical performance, durability under extreme conditions, and enhanced grid stability, all while meeting global standards for safety and sustainability.
Superior Electrical Performance

High dielectric strength ensures safe and efficient transformer operation under demanding conditions.

Improved Grid Stability

Bushings and tap changers maintain voltage control and system resilience.

Enhanced Thermal and Mechanical Durability

Components withstand extreme temperatures and mechanical stress for long-lasting reliability.

Sustainability and Compliance

Designed to meet global standards while minimizing environmental impact.

Frequently Asked Questions (FAQs) about Transformer Insulation and Components

Find quick answers to common questions about transformer insulation and components, their role in ensuring reliability, and how Hitachi Energy’s solutions support safe and efficient power systems.

They include bushings, tap changers, pressboard, and polymeric insulators that ensure safe and reliable transformer operation.

Insulation protects transformers from electrical and thermal stress, extending their service life and maintaining grid stability.

Common materials include pressboard, insulation paper, fiber composites, flexible laminates, and resin-impregnated glass fiber.

They provide high dielectric strength and mechanical durability, reducing failure risks and enhancing system performance.

Our products combine advanced materials and innovative designs to meet global standards, improve safety, and minimize environmental impact.

They are used in power and distribution transformers across industries, including renewable energy, utilities, and manufacturing.

Bushings enable safe current conduction, while tap changers regulate voltage under varying load conditions.

It provides superior thermal and mechanical strength, ensuring insulation integrity under extreme conditions.

Latest News on Transformer Insulation and Components

Stay updated with Hitachi Energy’s latest innovations, industry insights, and technology trends in transformer insulation and components. Discover how our solutions enhance reliability, efficiency, and sustainability across the global power system.
Discover solutions from Hitachi Energy, including advanced transformer technologies, grid resilience systems, and digital tools that enhance performance, safety, and sustainability across power networks.

Something caught your eye?

Our sales team will get in touch with you