Power Transformers Eco0 pages

TRAFOX
POWER TRANSFORMERS
for solar-energy and machinery industry

3 phase eco model 10 - 500kVA

The advantage with ECO-transformer is low load
losses, low operating temperature and small
magnetic stray field. Also the inrush current is lower
than in POWER-model. All this has been achieved
by decreasing the temperature rise and magnetic
flux density in the transformer. All materials used
are of the highest quality from certified suppliers.
ECO-transformers have lower operating costs than
POWER-transformers.

TECHNICAL SPECIFICATIONS
• IEC60076/IEC726 (if needed, also DNV, LRS...)
• Raw materials are of temperature Class F(155 °C)
• CE,UL/Ur
• Tamb 45 °C
• Voltage max 1000V
• Frequency 50-60Hz
• Relative humidity: 95%, no condensation
• Overload: 120% for two hours

Transformer European efficiency = 0,03 x η5 + 0,06 x η10 + 0,13 x η20 + 0,1 x η30 + 0,48 x η50 + 0,2 x η100

Where:
η5 = efficiency working at 5% of rated power.
η10 = efficiency working at 10% of rated power.
η20 = efficiency working at 20% of rated power.
η30 = efficiency working at 30% of rated power.
η50 = efficiency working at 50% of rated power.
η100= efficiency working at 100% of rated power.

Solar-energy applications Uk/%-value can be factory
adjusted to 4-7% level. Also is available adjustment
reactors to reach needed inductance value in LCL
filtering circuit.

Power
kVA
10
15
20
25
30
40
50
80
100
200
300
400
500

P0/W

Pk/W Uk/%

I0/%

Efficiency

62
81
95
107
132
203
206
273
405
623
707
1032
1042

422
426
543
768
754
713
752
1387
1897
3587
6011
5652
7984

12
10
10
10
8
8
8
7
5
4
3
3
2

95.81
96.78
97.04
97.02
97.27
97.41
97.87
97.99
97.69
98.07
98.20
98.42
98.50

4-7
4-7
4-7
4-7
4-7
4-7
4-7
4-7
4-7
4-7
4-7
4-7
4-7