High-Performance Instrument Transformers for Power Networks Engineered Current Transformers for Reliable Utility Networks
Whether you're upgrading ageing substations, constructing renewable energy infrastructure, or delivering a new grid connection, ITL designs and manufactures high-performance Current Transformers (CTs) that deliver accurate protection, dependable metering, and long-term reliability.
For more than 50 years, utilities, EPC contractors and switchgear manufacturers have relied on ITL for bespoke instrument transformers designed to meet the demanding requirements of modern electrical networks.
From 415V distribution systems to 36kV medium-voltage applications, our Current Transformers are built to perform in the harshest operating environments.
Talk to our engineers today about your project requirements.
Why Utilities Choose ITL
- Benefits include
- High accuracy for protection and revenue metering
- Bespoke designs for retrofit or new-build projects
- Short lead times compared with many imported alternatives
- UK engineering support throughout the project lifecycle
- Designed to IEC, BS and customer-specific standards
- Manufactured for indoor and outdoor environments
- Long operational life with minimal maintenance
- Full routine testing and certification
Applications
- Distribution substations
- Primary substations
- Secondary substations
- Grid connection projects
- Battery Energy Storage Systems (BESS)
- Solar farms
- Wind farms
- Data centres
- Industrial power distribution
- Rail infrastructure
- Water treatment facilities
- Utility-owned switchgear
- Generator protection systems
Current Transformer Solutions
Designed to provide dependable fault detection and relay operation during abnormal network conditions.
Suitable for:
- Overcurrent protection
- Differential protection
- Earth fault protection
- Busbar protection
- Transformer protection
Metering Current Transformers
High-accuracy CTs designed for:
- Revenue metering
- Energy monitoring
- Power quality systems
- SCADA integration
- Smart Grid applications
Accuracy classes available to suit utility specifications.
Ring Type Current Transformers
Compact designs ideal for:
- Switchgear
- Distribution panels
- Retrofit installations
- Cable monitoring
Split Core Current Transformers
Ideal where existing cabling cannot be disconnected.
Applications include:
- Temporary metering
- Energy monitoring
- Retrofit installations
- Condition monitoring
Bespoke Current Transformers
Many utility projects require non-standard solutions.
ITL regularly manufactures custom Current Transformers for:
- Legacy equipment replacement
- Obsolete switchgear
- Special busbar arrangements
- High current applications
- Extreme environmental conditions
- Customer-specific protection schemes
If an original manufacturer no longer supports your equipment, we can often engineer a similar or direct replacement.
Built for Utility Infrastructure
Our Current Transformers are installed throughout critical infrastructure, including:
- Electricity Distribution Networks
- National transmission systems
- Renewable energy projects
- Data centres
- Industrial process plants
- Critical national infrastructure
Every transformer is manufactured to provide dependable performance over decades of continuous service.
Technical Capabilities
ITL manufactures Current Transformers with:
- Indoor and outdoor designs
- Resin-encapsulated construction
- Bar primary and wound primary designs
- Window-type construction
- High thermal withstand capability
- Wide ratio range
- Multiple secondary windings
- Multiple accuracy classes
- Custom terminal arrangements
- Bespoke mounting options
Our engineering team can design transformers to suit virtually any application.
Technical Capabilities
ITL manufactures Current Transformers with:
- Indoor and outdoor designs
- Resin-encapsulated construction
- Bar primary and wound primary designs
- Window-type construction
- High thermal withstand capability
- Wide ratio range
- Multiple secondary windings
- Multiple accuracy classes
- Custom terminal arrangements
- Bespoke mounting options
Our engineering team can design transformers to suit virtually any application.
Compliance
- IEC 61869
- IEC 60044 (legacy applications)
- BS EN standards
- Utility specifications
- Customer technical specifications
Each transformer undergoes comprehensive routine testing before dispatch, with test reports available upon request.
Why Work with ITL?
Unlike catalogue suppliers, ITL works directly with engineers.
We help customers specify the correct Current Transformer from the outset, reducing project delays and ensuring the correct protection and metering performance.
Our engineers regularly assist with:
- Ratio selection
- Accuracy class selection
- Knee point calculations
- Burden calculations
- Retrofit projects
- Reverse engineering obsolete transformers
Utility Frequently Asked Questions
Can you replace obsolete Current Transformers?
Yes. We frequently manufacture direct replacements for discontinued or obsolete instrument transformers.
Can you manufacture to our specification?
Yes. Most of our utility projects are bespoke designs manufactured to customer drawings or technical specifications.
What industries do you supply?
We supply utilities, EPC contractors, switchgear manufacturers, renewable energy developers, industrial facilities, transport infrastructure and data centres.
Do you provide technical support?
Yes. Our engineering team is available throughout the specification, design, and manufacture stages and can provide basic general installation information.
Speak to a Current Transformer Specialist
Choosing the correct Current Transformer is critical to the safety and reliability of your electrical network.
Whether you require a standard protection CT, a revenue metering transformer, or a completely bespoke design, our engineers are ready to help.
Talk to our experts today for technical advice, quotations or design assistance.
If you have any questions, please contact us today on +44(0)1355236057 or on our e-mail sales@itl-uk.com