
Voltage Transformer Selection: Ratio, Burden and Class
Ratio, burden, class – in that order, because the class only exists inside the burden. A worked 10 kV example plus the factor that overrides all three.
Founded in 2009, Kampa specializes in the production of transformers, instrument transformers, and vacuum circuit breakers, providing OEM and ODM customized solutions for global power transmission and distribution projects.
We provide tailored transformers and instrument transformers to meet diverse project requirements with OEM & ODM support.
Our products are manufactured under strict international standards, ensuring efficiency, safety, and long-term reliability.
With years of export experience, we serve clients across Russia, Africa, Latin America, and Central Asia with stable supply.
Explore our range of high voltage transformers, instrument transformers, and vacuum circuit breakers designed for transmission, distribution, and industrial applications.
Kampa, established in 2009, specializes in high-voltage transformers and instrument transformers, combining advanced technology with global market experience.
We design, manufacture and ship the electrical equipment you need. We’re a full-service supplier, so we can handle all your projects from start to finish. Our goal is to provide you with the best products at reasonable prices. We know that finding supplies for your next project can be difficult, so our staff is here to help you find what you need and get it shipped quickly and efficiently.
Every product undergoes multi-stage quality inspection — from raw material testing, process control, to final performance verification — ensuring full compliance with IEC and ISO standards.
Kampa’s engineering team is experienced in OEM and ODM projects, offering tailored designs that meet different voltage levels, installation environments, and industrial requirements.
Our products have been widely exported to Russia, Africa, Latin America, and the five Central Asian countries, where power infrastructure often faces extreme environmental and grid challenges.
Kampa medium-voltage and high-voltage power transmission and distribution solutions combine advanced technology with reliable performance to meet the power needs of various industries and cities.





Looking for a trusted partner in power equipment manufacturing? Get customized, reliable, and globally proven solutions from Kampa Electric.

Ratio, burden, class – in that order, because the class only exists inside the burden. A worked 10 kV example plus the factor that overrides all three.

Ratio, burden, class – in that order, because the class only exists inside the burden. A worked 10 kV example plus the factor that overrides all three.

SCB and SGB are not two versions of one product. Vacuum-cast epoxy and open-wound H class diverge on ambient, dust, overload margin and price.

The mounting type follows the feeder, not the nameplate. Where the 500 kVA pole ceiling sits, what the pad cabinet adds, and where the installed cost really goes.
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