Our Facility

Infrastructure

A 200,000 sq.ft integrated manufacturing facility in Hyderabad, built for precision production across the complete range of instrument transformers.

Straton Electricals' manufacturing facility in Hyderabad, India spans 200,000 sq.ft, purpose-built for precision production across the complete range of instrument transformers. The facility houses an in-house 700kV EHV partial discharge test laboratory, clean rooms for precision insulation processes, an APG machine and vacuum drying plant for resin casting, an autoclave for oil-immersed designs, and Omicron test kits for diagnostic testing.

Straton Electricals is a trusted instrument transformer manufacturer in India, holding ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications that ensure consistent quality, safety, and environmental management at every stage of manufacturing — built to serve both domestic and export markets.

Certifications

Certified and Approved For

ISO 9001:2015
ISO 14001:2015
Vacuum Drying Plant & Autoclave Oil Impregnation

Vacuum Drying Plant & Autoclave Oil Impregnation

Our vacuum drying plant and autoclave process oil-impregnated paper (OIP) current transformers and voltage transformers from 11kV to 245kV, including 33kV, 132kV, and 220kV ratings. This ensures void-free, moisture-free insulation and long-term dielectric reliability across every HV and MV instrument transformer we manufacture.

APG Machines

APG Machines

Our Automatic Pressure Gelation (APG) machines manufacture cast resin current transformers and voltage transformers up to 36kV, including 11kV, 22kV, and 33kV ratings in wound, ring, and window type constructions — delivering consistent, void-free resin casting across every medium voltage instrument transformer.

Clean Rooms

Clean Rooms

All high voltage instrument transformers — including 132kV, 220kV, and 245kV current transformers and voltage transformers — are manufactured exclusively within our controlled clean room facility, ensuring contamination-free, partial discharge-free performance for transmission and utility applications.

700kV High Voltage Test Lab

700kV High Voltage Test Lab

Our 700kV high voltage test lab is a partial discharge-free series resonance facility with a static frequency converter, conducting comprehensive CT and VT testing — including impulse voltage testing, partial discharge measurement, and routine and type testing — verified against NABL standards and global high voltage testing benchmarks.

Wideband Paper Rolling Machine

Wideband Paper Rolling Machine

Our wideband paper rolling machine precision-winds insulation paper for oil-impregnated paper (OIP) current transformers and voltage transformers across 33kV to 245kV voltage classes, ensuring consistent dielectric strength in every high voltage instrument transformer.

Diagnostic & Routine Testing — Omicron and Tan Delta

Diagnostic & Routine Testing — Omicron and Tan Delta

Our in-house testing facility uses Omicron test kits and tan delta testing to verify accuracy and insulation integrity across every current transformer and voltage transformer, from 11kV to 245kV ratings, before dispatch.

Precision Welding — Cobot Technology

Precision Welding — Cobot Technology

We employ collaborative robot (cobot) welding for precise, consistent tank and enclosure fabrication across our current transformer and voltage transformer manufacturing line.

FAQ

Frequently Asked Questions

Our Automatic Pressure Gelation (APG) machines inject epoxy resin into moulds under controlled pressure and temperature, achieving void-free insulation across every cast resin current transformer and voltage transformer. This eliminates air pockets and moisture ingress, ensuring consistent insulation integrity, partial discharge-free performance, and longer service life — regardless of component size or shape.

Our vacuum drying plant removes residual moisture from deep cavities within paper insulation, followed by precision oil filling under vacuum. This process ensures void-free, moisture-free insulation and maintains the dielectric strength required for long-term transformer reliability.

Our 700kV High Voltage Test Lab provides impulse voltage testing, partial discharge measurement, and comprehensive routine and type testing, verifying every current transformer and voltage transformer against IEC and NABL testing standards.

A clean room is a controlled manufacturing environment that minimises dust, humidity, and contamination during critical insulation and winding processes. We manufacture all high voltage current transformers and voltage transformers — including 66kV, 132kV, 220kV, and 245kV ratings — within a dedicated clean room facility to ensure partial discharge-free performance and consistent dielectric strength.

Tan delta testing measures insulation power factor to assess the condition and ageing of insulation in current transformers and voltage transformers. We perform tan delta testing on every unit as part of routine quality testing, helping detect moisture ingress, insulation degradation, and potential failure points before dispatch.

Our 700kV high voltage test lab conducts testing in compliance with NABL standards and IEC testing benchmarks, ensuring every current transformer and voltage transformer meets international quality and reliability requirements before leaving the factory.

Talk To Us

Want to See Our Manufacturing Facility in Action?

Contact our team to arrange a facility walkthrough or discuss testing and certification for your project.

Call 9849513001 WhatsApp 9849513001