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Nanocrystalline and Amorphous
| Fe-based Amorphous Alloy Iron Core for Distribution Transformer |
| Performance characteristics: |
| Iron core is provided with high saturation magnetic
displacement,low coercive force,low loss(equivalent to
1/3~1/5 of silicon steel sheet),low exciting current and
remarkable temperature stability. |
| Comparison between Fe-based amorphous alloy
and silicon steel material: |
Performance
Index |
Fe-Bassed Amorphous
Alloy |
Cold-Rolled Silicon
Steel Disc |
Saturation induction density Bs(T) |
1.56 |
2.03 |
Maximum magnetic inductivityμm (Gs/Oe) |
45×104 |
4×104 |
Coercive force Hc(A/M) |
4 |
30 |
Iron loss P(w/Kg) |
P(1.3T/50Hz) ≤0.2 |
P(1.7T/50Hz) ≤1.2 |
Exciting power Pe(Va/Kg) |
Pe(1.3T/50Hz) ≤0.5 |
Pe(1.3T/50Hz) ≤0.83 |
Resistivity ρ(μΩ.cm) |
130 |
47 |
Specific gravity d(g/cm3) |
7.2 |
7.65 |
Laminated iron core coefficient
η(%) |
≥70 |
≥95 |
| Comparison between no-load losses of amorphous
and Fe-silicon steel distribution transformers |
Capacity(KVA)
|
Amorphous
Distribution Transformer(W)
|
Silicon Steel Transformer Non-Load Loss(W) |
Non-load
loss |
Lower
than S9 |
Lower
than S7 |
S9 |
S7 |
160 |
91 |
77.2% |
80.2% |
400 |
460 |
200 |
116 |
75.8% |
78.5% |
480 |
540 |
315 |
160 |
76.1% |
78.9% |
670 |
760 |
500 |
232 |
75.8% |
78.5% |
960 |
1080 |
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