The difference
What changes when you move up a tier
The hardware is still a copper-wound oil-immersed distribution transformer. What changes is the loss level, the accessory set, and the documentation pack — which is usually what decides whether a bid is technically compliant.
- S13 and S20 series, lower no-load and load losses than S11
- Type test report and energy efficiency report included for the series
- Export packing and full English documentation set
- Nameplate and manual under your brand
If your tender quotes IEC 60076, send us the clause list. We will tell you which items our national-laboratory reports cover and where a project-specific type test would be needed.
