Dry Type Transformers

At LH Marthinusen, we specialize in providing high-quality dry type transformers for industrial and commercial applications. Our dry type transformers are designed to offer reliable performance, enhanced safety, and reduced maintenance, making them ideal for environments where fire safety and cooling efficiency are critical.

Key Features and Capabilities:

VPI Insulation Systems (up to 6.6kV)
Our Vacuum Pressure Impregnation (VPI) systems ensure that windings are completely impregnated with insulating resin, enhancing electrical insulation and mechanical strength. Suitable for applications up to 6.6kV, these systems are ideal for harsh environments and ensure long-lasting performance.
Cast Resin Insulation Systems
Cast resin transformers provide high reliability and are maintenance-free. These transformers are ideal for environments where fire safety and environmental protection are priorities, offering excellent protection against moisture, dust, and chemical pollutants.
IP Rated Enclosures
We offer transformers with IP-rated enclosures to protect the equipment from environmental factors such as dust, water, and other contaminants, ensuring safe and reliable operation in outdoor or industrial environments.
Forced Cooling Options
Our dry type transformers can be equipped with forced air-cooling options to enhance the transformer's capacity and performance. This is especially beneficial in high-load applications where efficient heat dissipation is required.

Our transformer repair facility is fully equipped to handle repairs and refurbishments for transformers ranging from 10kVA to 200MVA at 275kV, including reactors and regulators. Our advanced equipment and expert technicians ensure that your transformer components are returned to full operational capacity, adhering to the highest industry standards

Facility Features:

160-Ton Overhead Crane Capacity
Our facility is capable of handling large transformers, allowing us to manage even the most complex repair and refurbishment projects efficiently and safely.
Automated Vacuum Ovens
Equipped with nitrogen injection and oil spraying processing, our three vacuum ovens ensure that all active parts of the transformers are dried to the highest standards before tanking. This process is critical for ensuring the longevity and reliability of transformer components.
Test Bay Facility
Our test bay can perform tests up to 350kV and 200Hz, ensuring that all transformers are tested in compliance with IEC and BS standards
Pressurised Electrical Assembly Facility
Our pressurised assembly area allows for precise and safe electrical assembly, reducing the risk of contamination and ensuring the highest levels of build quality for all transformer components.
MV Impulse Test Facility
We also provide medium-voltage impulse testing to ensure that your transformers can withstand electrical stresses and meet all required safety standards.
In addition to repairs and refurbishments, LH Marthinusen specializes in the manufacture of furnace, rectifier, dry type, and distribution transformers, as well as the complete repair of both underground and surface miniature substations. We offer end-to-end services to ensure that your transformers continue to operate efficiently, regardless of the application.

We offer custom transformer design services to meet your specific operational requirements. We design and manufacture transformers up to 80MVA and 275kV to match customer specifications, ensuring tailored solutions that provide reliable performance in demanding environments.

Our team utilizes in-house 3D CAD design capabilities, which allow us to create custom designs that meet the precise needs of your project.

With years of experience in the industry, LH Marthinusen is recognized for delivering reliable transformer solutions across a range of industries, including rail, mining, energy, and manufacturing.