History of ITL
Measurement, Protection & Monitoring Solutions for the Power Industry
Since 1973, ITL has designed, manufactured, and supplied specialist measurement, protection, and monitoring solutions for the electrical power industry.
From our UK manufacturing base, we support OEMs, utilities, EPC contractors and power-industry specialists with engineered solutions for LV, MV and HV applications — combining technical expertise, manufacturing capability and responsive customer support.
More Than a Transformer Manufacturer
We design and manufacture Current Transformers (CTs) and Voltage Transformers (VTs) for measurement and protection applications.
Our capabilities include:
- LV, MV & HV Current and Voltage Transformers
- Oil-filled transformers up to 400kV
- Resin-type CTs and VTs up to 36kV
- Indoor and outdoor transformer solutions
- Protection, metering and measurement applications
- IEC, IEEE/ANSI and other international standards
- Partial Discharge Monitoring
- Remote asset condition monitoring
- Specialist engineered and customised solutions
With primary currents from 1A to 30,000A and a wide range of measurement and protection classes, we can engineer solutions around the precise requirements of your application.
Engineering Expertise Where It Matters
ITL is particularly recognised for its expertise in protection-class transformers, working closely with customers to develop practical, technically robust solutions.
Our engineer-led approach means we don't simply supply a standard product. We work with our customers to understand the application, identify the critical requirements and deliver an optimised measurement and protection solution.
From standard designs through to highly customised requirements, our team provides technical and design support throughout the process.
Manufacturing Capability
Our continued investment in UK manufacturing has significantly increased both our production capability and capacity.
Our facilities include:
- State-of-the-art winding equipment
- High-current testing capability
- Purpose-designed Faraday chamber
- Vacuum casting equipment
- Dedicated testing and inspection facilities
- Integrated quality, environmental and health & safety management systems
Our management systems are supported by ISO 9001, ISO 14001 and ISO 45001 certification, providing customers with confidence in the quality, consistency and environmental responsibility of our operations.
Supporting the Global Power Industry
Over the years, ITL has developed strong relationships with leading international power-industry organisations and OEMs, including ABB, GE, Siemens and Schneider Electric.
Our experience spans the UK and international markets, enabling us to understand the demanding technical, commercial, and delivery requirements of today's power industry.
We combine engineering expertise, manufacturing flexibility and competitive commercial solutions to help our customers meet challenging project requirements and delivery schedules.
Expanding Beyond Measurement & Protection
The modern power network demands more than traditional measurement and protection.
That's why ITL has expanded its capabilities into asset monitoring and condition-based maintenance, helping customers obtain greater visibility of the health and performance of critical electrical assets.
Our partnership with Synaptec introduced REFASE remote monitoring technology, providing real-time condition data from power generation, transmission and distribution assets using passive sensing technologies.
We have also developed our capabilities in Partial Discharge Monitoring, working with specialist industry partners to provide solutions for detecting and assessing insulation condition in HV assets.
From Measurement to Monitoring
Our solutions can help customers move from:
Measure → Protect → Monitor → Predict
Providing greater insight into the condition of critical electrical infrastructure and supporting more informed maintenance decisions.
ITL Renewables
The transition to renewable energy is creating new challenges for power generation, transmission and distribution.
Our dedicated ITL Renewables division supports the onshore and offshore renewable-energy sector with specialist solutions covering:
Power Protection & Measurement
Current and voltage transformers and associated equipment for renewable-energy generation, collection and distribution systems.
Asset Monitoring & Protection
Remote monitoring, measurement, maintenance and protection solutions for cables, generation assets and electrical distribution systems.
Partial Discharge Monitoring
Specialist monitoring solutions designed to provide early visibility of insulation defects and developing problems within HV assets.
Whether you are developing a wind farm, solar project, battery energy storage system, transmission connection or wider electrical infrastructure, ITL can support the measurement, protection and monitoring requirements of your project.
Why Work With ITL?
ENGINEERING-LED
Technical expertise backed by decades of experience in measurement and protection.
UK MANUFACTURING
Dedicated manufacturing capability with continued investment in equipment, testing and capacity.
CUSTOM ENGINEERED
Solutions designed around your application — not simply selected from a catalogue.
GLOBAL EXPERIENCE
Experience supporting OEMs and customers across the UK and international power markets.
RESPONSIVE SUPPORT
Direct access to experienced technical and commercial personnel.
ONE PARTNER. MULTIPLE SOLUTIONS.
From measurement and protection transformers through to remote monitoring and partial discharge, ITL can provide complementary technologies across the asset lifecycle.