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Commission Regulation (EU) No 548/2014Show full title
Commission Regulation (EU) No 548/2014 of 21 May 2014 on implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to small, medium and large power transformers
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2. Minimum energy efficiency requirements for large power transformers
The minimum efficiency requirements for large power transformers are set out in Tables I.7 and I.8.
Table I.7: Minimum Peak Efficiency Index requirements for liquid immersed large power transformers
| Rated Power (MVA) | Tier 1 (1 July 2015) | Tier 2 (1 July 2021) |
|---|---|---|
| Minimum Peak Efficiency Index (%) | ||
| ≤ 4 | 99,465 | 99,532 |
| 5 | 99,483 | 99,548 |
| 6,3 | 99,510 | 99,571 |
| 8 | 99,535 | 99,593 |
| 10 | 99,560 | 99,615 |
| 12,5 | 99,588 | 99,640 |
| 16 | 99,615 | 99,663 |
| 20 | 99,639 | 99,684 |
| 25 | 99,657 | 99,700 |
| 31,5 | 99,671 | 99,712 |
| 40 | 99,684 | 99,724 |
| 50 | 99,696 | 99,734 |
| 63 | 99,709 | 99,745 |
| 80 | 99,723 | 99,758 |
| ≥ 100 | 99,737 | 99,770 |
Minimum PEI values for MVA ratings that fall in between the ratings given in Table I.7 shall be calculated by linear interpolation.
Table I.8: Minimum Peak Efficiency Index requirements for dry-type large power transformers
| Rated Power (MVA) | Tier 1 (1 July 2015) | Tier 2 (1 July 2021) |
|---|---|---|
| Minimum Peak Efficiency Index (%) | ||
| ≤ 4 | 99,158 | 99,225 |
| 5 | 99,200 | 99,265 |
| 6,3 | 99,242 | 99,303 |
| 8 | 99,298 | 99,356 |
| 10 | 99,330 | 99,385 |
| 12,5 | 99,370 | 99,422 |
| 16 | 99,416 | 99,464 |
| 20 | 99,468 | 99,513 |
| 25 | 99,521 | 99,564 |
| 31,5 | 99,551 | 99,592 |
| 40 | 99,567 | 99,607 |
| 50 | 99,585 | 99,623 |
| ≥ 63 | 99,590 | 99,626 |
Minimum PEI values for MVA ratings that fall in between the ratings given in Table I.8 shall be calculated by linear interpolation.
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