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Conforms to National GB/T3655-2000, and be used together with MATS-2010M Hysteresisgraph.
According to IEC404-2 Standards, ES-700 Epstein Frame is the basis of measuring the magnetic properties of electrical steel sheet and strip; from DC to audio frequency (10kHz), that is the total usage frequency range of electrical steel sheet. The measurement principle for DC magnetic properties is ballistic method and measurement principle for AC magnetic properties is voltammetry.
Specifications
| Item | ES-700 Epstein Frame | ES-200 Midband Frame |
| Environment temperature | 23℃±5℃ | 23℃±5℃ |
| Humidity | ＜65％ | ＜65％ |
| Applied standards | GB3655-2008and IEC 60404-2 | GB 10129-88 |
| Equivalent Magnetic Circuit | 940mm | 940mm |
| Primary turns | 700 turns | 200 turns |
| Secondary turns | 700 turns | 200 turns |
| Sample size | Width: 30mm±0.2mm, Length: 280～320mm±0.5mm | Width: 30mm±0.2mm, Width: 280～ 305mm±0.5mm |
| Sample mass | No less than 240g | No less than 200g |
| Frequency | DC ~ 400Hz | 400Hz~10kHz |
