Precise Instrument Transformer Core

Product Features:

Zhili precise current instrument transformer core which is made by self-produced 1K107 DI nanocrystalline strips has high Saturation magnetic induction, 1.25T Bs, high magnetic permeability, good product stability and can work under -55—130℃ for a long time by widely used in the current transformer for measuring instrument. At the same time, the outside of our iron cores are packed in plastic box and coated by powder to protect magnetic core (as shown in the following figure):

Box-packed                                                           Coating

Characteristics of iron core:

. High magnetic permeability -- greatly improves the precision of instrument transformer and reduces ratio error?
. Superior temperature stability -- works under -55--130 °C for a long time
. In the condition of same dimension and performance of magnetic core, iron core is lighter and cheaper than permalloy.

Product Application

Precise current transformer for the measurement of instruments

Current transformer for earth leakage protection
Current transformer for the current monitoring of high-power electronic equipment
輸入 Input   輸出 Output       電流互感器 Current transformer
Figure 1 Current transformer for current detector

Performance index:

Comparison on the performance of Fe-based nanocrystalline core, permalloy core and silicon-steel sheet core

Curves of typical performance parameters

Test Report of MATS-2010S Soft Magnetic Materials
Static Hysteresis Loop and Basic Magnetizing Curve

測量結果 Measuring result   
測試條件 Test condition   
樣品參數 Sample parameters  
尺寸示意圖 Schematic diagram of size  
單位 Unit

Specification, model and reference performance of common iron core

*can be prepared according to the specifications and performances required by customers