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Circular electric current transformer core


. The annular electric current transformer core 


For example: OFN - OD said diameter ECT - 012000800025 = 120 mm, inner ID = 80 mm, height H = 25 mm iron-based nanocrystalline annular electric current transformer core.

2. The performance characteristics

Pieces with high saturation magnetic induction intensity - less than permalloy current transformer winding, light weight, low cost, measuring current is wider

Pieces of high permeability, low coercive force -- measurement error is small, high sensitivity

Mixer low loss silicon steel, permalloy core ideal alternative materials

Pieces of good temperature stability, can be in worker and 55 ℃ ~ 130 ℃ temperature range work for a long time

3. The application field

In pieces the important role of current transformer is power system when the primary has alternating current input, second level according to the proportion of output current. Is mainly used in safety and efficiency of power plants and transformer substations of high voltage, large current measurement and relay protection, current transformer to measure and control circuit and the measurement of high voltage circuit safe ones. With traditional silicon steel core materials and permalloy, iron-based nanocrystalline alloy with high magnetic permeability, low loss of obvious advantages, is mainly used in epoxy sealing bushing current transformers, low voltage, medium voltage, high voltage switch equipment, and other power transmission and distribution system equipment.

Precision grade: 0.5, 0.5 S, 0.2, 0.2 S, 0.1, is applied to the precision grades of 0.2, 0.2 S, 0.2 the precision current transformer is more competitive.

Rated voltage: 0.38, 0.5, 0.6, 1,3,6,10,20,35,66,110,220,330,500,750 and 1000 kv

4. The iron-based nanocrystalline alloy compared with basic magnetic permalloy 

5. Typical core specification 


6. Typical core magnetization curve and hysteresis loop 


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