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High Permeability Nano-crystalline Current Transformer Toroidal Core

Product Description

It is well known that the higher CT Core Permeability, the lower measurement error & higher measurement accuracy, The silicon steel CT Core can not get enough measurement accuracy under the situation of low Ampere-turns of small turn ratios. And the Fe-Ni Permalloy Core’s application are limited because of their low magnetization and high cost.

Nano-crystalline cores are getting wider usage for the accuracy grade precious current transformer, because of its high permeability, high magnetization and lower cost in the field of power supply systems, power energy measurement and controlling systems, etc.

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Product Characteristics

High Permeability & High Saturation induction Bs - Increase CT’s accuracy, leavel, smaller volume & High Linearity.

Good Temperature stability -- Keep stable from -55℃ to 120℃ for long time.

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Performance Index

Item	Performance
Saturation Induction Bs(T)	1.25
Curie Temperature Tc(℃)	570
Crystalline Temperature Tx(℃)	500
Hardness Hv	800
Initial Permeability (μ0)	＞12x10⁴
Saturation Magnetostriction	2.0x10^-6
Density (g/cm3)	7.2
Resistance Ratio (μΩ.cm)	130
Thickness(μm)	28~35
Stacking factor	≥0.75

Product Property

H（mA/cm）	B（Gs）	μ（×104）
0.39	50	10.20224012
0.77	100	10.33473674
1.39	200	11.4499961
1.85	300	12.90445507
2.27	400	14.02246
2.62	500	15.18654
2.87	600	16.63641
3.16	700	17.62792121
3.38	800	18.83490483
3.61	900	19.83925917
3.81	1000	20.88647583
4.01	1100	21.82923
4.38	1300	23.61888
4.75	1500	25.12973
5.06	1700	26.73551461
5.35	1900	28.2611586
5.57	2100	30.00227883
5.86	2300	31.23347913
6.11	2500	32.56034
6.34	2700	33.88946
6.57	2900	35.12552

Product Specification

Part No	Core Dimension			Finished Dimension
Part No	OD	ID	HT	OD	ID	HT
NR-0004	19	14	6.5	22.2	12	9
NR-0007	21	16	10	23.8	14.5	12.5
NR-0008	20	14	10	23.5	12.5	12.5
NR-0012	26	19	10	29	16.5	12.5
NR-0014	40	30	10	43	27.5	12.5
NR-0017	40	30	15	43	27.5	17.5
NR-0019	83	38	40	88	34	45
NR-0020	71	39	33	76	35	38
NR-0021	70	42	30	75	38	35
NR-0022	68	45	30	73	41	35
NR-0023	68	45	25	73	41	30
NR-0024	78	60	25	83	56	30
NR-0025	80	60	30	85	56	35
NR-0026	82	63	30	87	59	35
NR-0027	70	40	25	75	36	30
NR-0028	82	45	50	87	41	55
NR-0029	82	45	30	87	41	35
NR-0030	85	45	60	90	40	65
NR-0031	85	50	30	90	46	35
NR-0032	80	50	35	85	46	40
NR-0033	86	60	40	91	56	45
NR-0034	78	60	35	83	56	40
NR-0038	115	85	20	120	81	25
NR-00119	78	60	30	83	56	35
NR-00120	88	50	40	93	46	45
NR-0121	120	95	20	125	91	25
NR-0122	83	30	50	88	26	55
NR-0123	80	50	30	85	46	35
NR-0125	80	50	25	85	46	30
NR-0126	90	73	30	95	69	35
NR-0128	90	43	40	95	39	45
NR-0129	88	60	35	93	56	40
NR-0130	110	90	45	115	86	50
NR-0131	100	75	20	105	71	25
NR-0137	115	85	25	120	81	20
NR-0138	120	95	15	125	91	20
NR-0139	120	85	20	125	81	25
NR-0078	265	210	10	271	203	17
NR-0079	220	180	20	227	172	25
NR-0080	220	180	30	227	172	35
NR-0086	560	470	12	572	458	18

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