1. Ivo Pinkiewicz, IENOT, POLAND DISTRIBUTION TRANSFORMER POPULATION and EFFICIENCY LEVELS IN POLAND

2. DISTRIBUTION OF n RATED POWER YEAR OF MANUFACTURING YEAR OF MANUFACTURING n LOSSES

3. RATED POWER DISTRIBUTION OF RATED POWER IN ONE OF UTILITIES IN POLAND

4. RATED POWER DISTRIBUTION OF TRANSFORMERS IN SEVERAL UTILITIES IN POLAND

5. MANUFACTURING YEAR DISTRIBUTION OF 160 kVA TRANSFORMERS IN ONE OF UTILITIES IN POLAND

6. MANUFACTURING YEAR DISTRIBUTION OF 400 kVA TRANSFORMERS IN ONE OF UTILITIES IN POLAND

7. Units with age above 25, 30 and 35 years in groups of transformer rated 160, 250 and 400 kVA.

8. LOSSES DISTRIBUTION RELATION OF LOSSES IN TRANSFORMERS RATED 160 kVA IN ONE OF UTILITIES IN POLAND

9. LOSSES DISTRIBUTION RELATION OF LOSSES IN TRANSFORMERS RATED 400 kVA IN ONE OF UTILITIES IN POLAND

10. LOSSES DISTRIBUTION NO LOAD and LOAD LOSSES OF 160 kVA TRANSFORMERS IN ONE OF UTILITIES IN POLAND

11. LOSSES DISTRIBUTION NO LOAD and LOAD LOSSES OF 400 kVA TRANSFORMERS IN ONE OF UTILITIES IN POLAND

12. LOSSES COMPARISON LEVELS OF LOSSES OVER THE YEARS

13. EFFICIENCY LEVELS DATA NECESSARY TO ESTIMATE EFFICIENCY LEVEL: n Rated value of no load and load losses n Yearly Load profiles specified by: –Yearly peak load –Running time –Loss time

14. EFFICIENCY COMMON VALUES OF LOAD PROFILE COOFFICIENTS IN POLAND n Yearly peak load...............0,30....0,35 n Running time..................3500....4560 h n Loss time........................2100....3100 h

15. EFFICIENCY IMPROVEMENT EFFICIENCY THROUGH REPLACEMENT THE OLD TRANSFORMER 100 kVA by C-C' TRANSFORMER

16. EFFICIENCY YEARLY ENERGY SAVING THROUGH REPLACEMENT THE OLD TRANSFORMER 100 kVA by C-C' TRANSFORMER

17. EFFICIENCY COMPARISON TYPICAL LOAD PROFILES AVERAGE LOADED TRANSFORMER 100 kVA IN WEST EUROPE AND POLAND

18. Energy savings and efficiency improvement in Polish Utilities when existing population is replaced by C-C’ Transformers