Ecodesign Loss Values for Oil-Immersed Transformers up to 3150 kVA (Um ≤ 24 kV)

Transformer Losses

Ecodesign Loss Requirements (IEC Reference)

Requirements applicable to three-phase liquid-immersed medium power transformers with rated power ≤ 3150 kVA, with one winding Um ≤ 24 kV and the other winding Um ≤ 1.1 kV, according to Ecodesign Tier 1 and Tier 2 limits.

Rated Power
(kVA)		 Ecodesign Tier 1
(from 1 July 2015)		 Ecodesign Tier 2
(from 1 July 2021)
Max Load Losses
Pk (W)		 Max No-Load Losses
Po (W)		 Max Load Losses
Pk (W)		 Max No-Load Losses
Po (W)
≤ 25 900 70 600 63
50 1100 90 750 81
100 1750 145 1250 130
160 2350 210 1750 189
250 3250 300 2350 270
315 3900 360 2800 324
400 4600 430 3250 387
500 5500 510 3900 459
630 6500 600 4600 540
800 8400 650 6000 585
1000 10500 770 7600 693
1250 11000 950 9500 855
1600 14000 1200 12000 1080
2000 18000 1450 15000 1305
2500 22000 1750 18500 1575
3150 27500 2200 23000 1980
Note: Values shown represent maximum permissible losses according to Ecodesign regulations. Final guaranteed losses depend on voltage ratio, frequency, cooling method and design and are confirmed during quotation and testing.

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Transformer Manufacturer

DATSAN Transformer manufactures oil-immersed distribution and power transformers for industrial, utility, and infrastructure projects worldwide.

Established in 1992, DATSAN combines over 30 years of engineering experience with modern manufacturing and testing capabilities. Our products are designed in accordance with IEC 60076, ANSI C57 and relevant international standards, with Ecodesign-compliant options available upon request.

Contact Us

Datsan Elk. İnş. San. ve Tic. Ltd. Şti.

Address: Kızıltepe Mardin Karayolu 6.km
Kızıltepe, 47400 Mardin / TÜRKİYE

Phone : +90 (482) 215 3188
Fax : +90 (482) 215 1199