News & technical insight
Notes from the factory and the market.
Testing practice, loss economics, standards, project logistics and company updates. Written for buyers and engineers who need to make a decision.
20kV Distribution Transformer Selection Guide
Compact 20 kV distribution for industrial parks, mining and renewable projects. This guide covers the selection inputs, typical configuration and the…
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10kV Distribution Transformer: Loss, Cooling and Protection
The workhorse of urban, rural, industrial and renewable distribution networks. This guide covers the selection inputs, typical configuration and the q…
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10kV Distribution Transformer Selection Guide
The workhorse of urban, rural, industrial and renewable distribution networks. This guide covers the selection inputs, typical configuration and the q…
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Oil-Immersed Transformer: Loss, Cooling and Protection
10 kV, 20 kV and 35 kV distribution and power transformers from 50 to 10,000 kVA. This guide covers the selection inputs, typical configuration and th…
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Oil-Immersed Transformer Selection Guide
10 kV, 20 kV and 35 kV distribution and power transformers from 50 to 10,000 kVA. This guide covers the selection inputs, typical configuration and th…
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Dry-Type Transformer Room Ventilation: A Practical Sizing Guide
A dry-type transformer still produces heat. Size the room airflow, clearances and filters for the actual losses, ambient and altitude, not a rule of t…
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Transformer Cooling Methods: ONAN, ONAF and OFAF
Cooling method sets the usable capacity, noise, maintenance and footprint. Compare ONAN, ONAF and OFAF against the real ambient and load profile.
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Transformer Efficiency Classes Explained
Efficiency classes are not a simple ranking of quality. They describe loss limits at defined ratings and conditions. Learn how to compare them fairly.
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No-Load vs Load Loss: What Actually Drives Cost
No-load loss runs 24 hours a day; load loss follows the square of the load. The right loss balance depends on the load profile, tariff and service lif…
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