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CURRENT POSITION: Home > Product > Current Transformer > Current transformer

Current transformer

Product Details

The core made of nanocrystalline strip has high permeability and low coercive force, especially is very sensitive to leakage current at the initial stage of magnetization, and the action current of leakage switch made of the core is small. At the same time, it has good resistance to high current impact. Because nanocrystalline um is one order of magnitude higher than permalloy and has high sensitivity, the number of turns of primary winding can be reduced for leakage switch with the same sensitivity, so the volume of leakage switch can be reduced accordingly, which not only saves cost but also meets the technical requirements

The core of leakage protection switch made of Fe based nanocrystalline alloy has the following characteristics:

1. Low coercive force, high initial permeability -- can reduce the action current of leakage switch

2. The saturation magnetic induction intensity is higher than permalloy

3. High permeability -- greatly improve the accuracy of transformer and reduce the ratio difference

4. Light weight and low cost -- the price is obviously superior to permalloy

5. It has good anti overload ability and good temperature stability -- Magnetic Properties of Fe based nanocrystalline alloy for the core of leakage protection switch transformer which can work for a long time at 55-130 ℃ (compared with permalloy)

Comparison of typical parameters of common soft magnetic materials for current transformer core:

Basic magnetic parametersNanocrystalline corePermalloy 1J85
um(Gs/Oe)最大导磁率> 60×104> 45×104
密度 (g/cm3)7.38.75
居里温度 (℃)570400
带材厚度 (mm)0.026~0.0300.15
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