Instrument Transformers and Bushings
CG range of instrument transformers includes Current Transformers, Inductive Voltage Transformers and Capacitive Voltage Transformers. Our Instrument transformers have significantly contributed to the electricity boards and utilities across the globe. Several thousands of EHV Instrument Transformers have been put into service in various environments in over 60 countries since 1984 and operating satisfactorily.
With the support of our global R & D, we have developed 1200 kV Capacitor Voltage Transformer ( CVT ), which has been successfully type tested.
Our EHV range of instrument transformers uses Oil Impregnated Paper (OIP) as the main insulation system. Napthene based mineral insulating oil (free from inhibitors) is used in the equipment manufactured. This oil is highly stable against oxidation as well as chemical and electrical aging. The capacitor technology used in capacitor voltage transformers and coupling capacitors is all paper or paper plus film (mixed dielectric) and synthetic oil.
Reliable, safe, and efficient electrical solutions you trust.
Lightning Arrester Up To 1200 kV
A lightning arrester up to 1200 kV is a critical device used to protect electrical systems from lightning-induced overvoltages. Designed for high-voltage applications, it acts as a safety mechanism by diverting the excess energy from a lightning strike to the ground, preventing damage to transformers, switchgear, and other electrical equipment. These arresters typically employ a combination of metal-oxide varistors (MOVs) and other advanced materials to suppress voltage spikes. With a high voltage rating of up to 1200 kV, these arresters are ideal for use in power transmission lines, substations, and industrial installations, ensuring system reliability and minimizing downtime.
Current Transformer Up To 800 kV
A current transformer (CT) up to 800 kV is a high-voltage device used to measure and monitor electrical current in power transmission and distribution systems. It operates by stepping down the high current flowing through conductors to a lower, measurable value, making it safe for monitoring equipment and protective relays. These CTs are designed to handle extreme voltage levels, typically up to 800 kV, without compromising accuracy or safety. Commonly used in substations, power plants, and industrial facilities, they help ensure the proper functioning of electrical grids by providing reliable current measurement for system protection, control, and fault detection.
Inductive Voltage Transformer Up To 420 kV
CG has manufactured and supplied thousands of quality electrical products for the past six decades which have excelled in various test and service environments around the world. Nearly 5000 Inductive Voltage Transformers, type IVT/VEOT/VEOC, have been supplied all over the world since 1986 and their performance and reliability has proven to be one of the best.
All our Voltage Transformers (36 to 420 kV) adhere to the requirements of the quality standards and our quality system, environment management system, safety management system are certified to ISO 9001-2008, ISO 14001 and ISO 18001 respectively.
Condenser Bushing Up To 800 kV
CG commenced manufacturing of condenser bushing at Nasik in 1986-87.In 2009, the condenser bushing manufacturing unit for 72.5kV was transferred to Aurangabad.
| RATED VOLTAGE |
| OIP Bushings (56kV to 800kV) |