Zero sequence transformer
Application fields:
Iron based nanocrystalline core instead of permalloy makes zero sequence current transformer, which is widely used in electronic or electromagnetic leakage protection switch.
Performance features:
High permeability, low coercivity, high sensitivity. It is beneficial to reduce the action current of leakage switch and improve the accuracy; good anti overload ability can ensure the stability of long-term operation; the output change rate is ± 6% in the range of - 10 ~ 80 ℃.
Product specification:
| Serial number | Specifications | Serial number | Specifications |
| 1 | Φ12/8×4.5 | 9 | Φ19/14×8 |
| 2 | Φ13.5/10×3.2 | 10 | Φ20/14×5 |
| 3 | Φ14/19×6.5 | 11 | Φ20/14×10 |
| 4 | Φ15/21×10 | 15 | Φ21/16×10 |
| 5 | Φ17/13×3.2 | 16 | Φ24/16×6.5 |
| 6 | Φ17.8/13×5 | 14 | Φ25.4/19.6×3.2 |
| 7 | Φ19/14×10 | 15 | Φ30/20×6.5 |
| 8 | Φ19/14×5 | 16 | Φ40/30×10 |
Note: iron core of other specifications can be provided according to the needs of users.
Comparison of magnetic properties of iron-based super microcrystalline iron core with permalloy and silicon steel sheet:
| 饱和磁感应强度T | 1.3 | 最初导磁率 | >120,000 |
| 居里温度Tc , ℃ | >570 | 最大导磁率 | >200,000 |
| 晶化温度Tx , ℃ | >500 | 矫顽力,A/m | <2 |
| 饱和磁致伸缩系数×10-6 | <2 | 铁损（20kHz,0.5T）w/kg | <25 |
| 连续工作温度范围 | -55～130℃ | 铁损（100kHz,0.2T）w/kg | <70 |
| 剩余磁感应强度 | 0.5～0.8 | 铁损变化率（-50～130℃） | <15% |
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