Transformer Cores
These transformer cores are toroidal cores that take an input current output a level, proportional current. They are normally used in high voltage, high current power plants and substations for safe and efficient measurement and protection. Current measurement and control in high voltage transformer circuits can be safely and accurately measured.
Features:
♦ High permeability - reduces measurement errors in current transformers
♦ High saturation magnetic flux density - smaller than current silicon steel transformer and light weight
♦ Excellent temperature stability – suitable for long term use within -55-130 ℃
♦ The transformer cores offer the same performance conditions, as permalloys with lower weight and a lower.
Applications:
♦ Substation measuring and protection for current transformers
♦ 0.2, 0.2s, 0.1 grade precision precision current transformer
♦ Low-voltage, medium-voltage, high-voltage switchgear
♦ Power transmission and distribution system equipment
Performance Comparison:
| Performance | Nanocrystalline core | Permalloy core | Silicon steel core |
| Saturation magnetization(T) | 1.25 | 0.76 | 2.03 |
| Initial permeability(0.8mA/cm) | 40,000-80,000 | >80,000 | 1,000 |
| Permeability | >250,000 | >200,000 | 40,000 |
| density(g/cm3) | 7.2 | 8.85 | 7.65 |
| Curie temperature(℃) | 570 | 400 | 740 |
| With thick(mm) | 0.025-0.035 | 0.1 | 0.3 |
| Lamination factor | ≥0.75 | 0.9 | 0.95 |
