Specifying an inverter duty transformer: a practical checklist
The parameters a solar EPC or developer should fix before requesting a quotation for an IDT — and why each one changes the design.
Read guideHS codes for transformers: a primer for importers
How heading 8504 splits by transformer type and rating — and why the final national code is always confirmed locally.
Read guideONAN vs ONAF: how transformer cooling classes work
What the four letters in a cooling designation mean, and when forced-air cooling is worth adding.
Read guideHermetically sealed vs conventional distribution transformers
Conservator-type or sealed? Maintenance, oil ageing and site conditions decide.
Read guideWind turbine transformers: what makes the duty different
Why IEC 60076-16 exists, and the questions to settle before specifying a wind step-up transformer.
Read guide