Do not rely solely on a datasheet. If a supplier claims compliance, request the following evidence:
(and later updated by the 2018 edition). While legacy documents referencing IEC 60726 may still exist, current industry standards require compliance with the IEC 60076-11 series for design, rating, and testing of dry-type power transformers up to 72.5 kV. Svenska institutet för standarder, SIS Key Information on IEC 60726 & Replacements Withdrawn and superseded by IEC 60076-11. Scope (Original IEC 60726): iec 60726 dry type power transformers pdf download
(For legit copies)
When you finally secure the , you will notice that the document is structured around several mandatory clauses. Here is what you need to look for: Do not rely solely on a datasheet
Iec 60726 - International Electrotechnical Commission - Scribd iec 60726 dry type power transformers pdf download