In transmission and distribution networks, high voltage CT accurately transforms currents up to 4000A into standardised 1A or 5A values for meters, protective relays, and monitoring instruments. Straton Electricals manufactures outdoor HV current transformers from 66kV to 245kV, engineered with oil-impregnated paper (OIP) insulation and fine-graded bushings for uniform dielectric strength. Our 220kV current transformers feature rigid bar-type primary construction withstanding large short-time currents, while trapezoidal-type secondary windings optimise internal voltage stress distribution. Each substation metering CT achieves partial discharge-free performance and incorporates nitrogen-free SS bellows for thermal expansion compensation. Available with polymer or porcelain external insulation, these high voltage current transformers comply with IEC 61869-2 standards. Customised CT ratio and burden configurations address specific high voltage switchgear and electrical transmission system requirements across renewable energy installations and utility power networks.
IEC Compliant
NABL
PGCIL
APTRANSCO
TGTRANSCOStraton Electricals manufactures outdoor current transformers in India. Our HV product range covers Oil-Impregnated Paper (OIP) insulated current transformers from 36kV to 245kV, available in wound type, bar/rigid type, and eye bolt type constructions. Engineered to withstand harsh outdoor environments while complying with IEC 61869-2 standards.
Wound Type Current Transformers use a primary winding around a magnetic core with oil-impregnated paper insulation and fine-graded bushings for accurate current transformation in HV/MV systems. They convert high primary currents into standardized 1 A/5 A secondary outputs for metering and protective relays, offering high accuracy and enhanced dielectric strength for utility substations and industrial applications.
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Eye Bolt Type Current Transformers are built for high-voltage applications, safely transforming primary currents up to 800A into standardized low secondary currents for revenue metering, protective relays, monitoring instruments, and control and automation systems. Their robust outdoor construction ensures dependable performance in utility substations and transmission networks.
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Rigid or Bar Primary Current Transformers feature a solid bar-type primary conductor for superior mechanical strength, withstanding high short-time fault currents up to 4000A across 36kV–245kV voltage classes, with oil-immersed insulation, fine-graded bushings, and excellent short-circuit withstand for outdoor transmission substations and switchyards. Straton Electricals designs and manufactures these bar-type high voltage CTs for power transmission infrastructure, renewable energy projects, data centres, and grid modernisation applications.
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Transmission & Distribution (T&D) Substations
High-Voltage Switchgear (AIS & GIS)
Utility Power Transmission Networks
Renewable Energy Plants (Solar, Wind & Hybrid)
Industrial Power Distribution Systems
Power Generation Plants
Protection Relay & Control Systems
Revenue & Energy Metering
Smart Grid Infrastructure
Grid Monitoring and Power Quality ApplicationsStraton Electricals' substation metering CTs are engineered to deliver high accuracy, thermal stability, and dependable insulation performance across critical electrical transmission systems. With robust construction and advanced insulation technology, our HV current transformers ensure safe and efficient operation in demanding utility and industrial environments. For specialised applications, we also offer customised designs tailored to specific system voltages, burden requirements, protection classes, and installation conditions.
Straton Electricals offers customized high voltage current transformer solutions for transmission substations, industrial power systems, renewable energy projects, and utility networks. Contact our engineering team for technical support, product selection, and customised CT specifications.
