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 Cores for power transformers/inductors/reactors 

These cores are made as C-typed and widely used for power transformers, high-frequency inductors,  reactors, etc. They are particularly used as UPS and SMPS power factor correction chokes, UPS harmonic inductors, high power outdoor industrial ballasts,  welding power supplies,  high-speed power systems, auto inductors,  solar inverters, wind power inverters, and harmonic filters.

Performance Characteristics:
Low loss & low coercivity
High saturation magnetization and high permeability
Excellent anti-DC bias ability
Long durability between -50 and 150 oC
convenient for coils' assembly

 Cores (C-Typed) Table

Product Code
a (mm)
b (mm)
c (mm)
d (mm)
e (mm)
f (mm)
lm (cm)*
Ac (cm2)**
Mass (g)
Vol (cm3)
Wa (cm2)
WaAc (cm4)
CPIR-01
10±0.5
11
33
20+0.5
31+1
53+2
13.1
1.59
150
20.9
3.6
5.8
CPIR-02
11±0.8
13
30
20+0.5
35+1
52+2
13.2
1.79
170
23.7
3.9
7
CPIR-03
11±0.8
13
40
20+0.5
35+1
62+2
15.4
1.81
200
27.9
5.2
9.4
CPIR-04
11±0.8
13
40
25+0.5
35+1
62+2
15.1
2.31
250
34.8
5.2
12
CPIR-05
11±0.8
13
50
25+0.5
35+1
72+2
16.9
2.31
280
38
6.5
15
CPIR-06
11±0.8
13
50
30+0.5
35+1
72+2
17.5
2.71
340
47.4
6.5
17.6
CPIR-07
13±0.8
15
56
25+0.5
41+1
82+2
19.6
2.7
380
52.9
8.4
22.7
CPIR-08
13±0.8
15
56
30+0.5
41+1
82+2
20
3.2
460
64.1
8.4
26.9
CPIR-09
13±0.8
15
56
35+0.5
41+1
82+2
19.9
3.71
530
73.8
8.4
31.2
CPIR-10
16±1
20
70
25+0.5
52+1
102+3
24.9
3.3
590
82.2
14
46.2
CPIR-11
16±1
20
70
30+0.5
52+1
102+3
25.3
3.91
710
98.9
14
54.7
CPIR-12
16±1
20
70
40+1
52+1
102+3
25.4
5.21
950
132
14
72.9
CPIR-13
16±1
20
70
45+1
52+1
102+3
25
5.91
1060
148
14
82.7
CPIR-14
19±1
25
83
35+1
63+1
121+3
30.2
5.4
1170
163
20.8
112
CPIR-15
19±1
25
83
40+1
63+1
121+3
28.5
6.5
1330
185
20.8
135
CPIR-16
19±1
25
83
50+1
63+1
121+3
29.8
7.81
1670
233
20.8
162
CPIR-17
19±1
25
90
60+1
63+1
128+3
31.4
9.31
2100
292
22.5
210
CPIR-18
22±1
35
85
50+1
79+1
129+4
32.5
9.3
2170
302
29.8
277
CPIR-19
22±1
35
85
65+1
79+1
129+4
33.6
11.7
2820
393
29.8
348
CPIR-20
25±1
40
85
55+1
90+1
135+4
35.6
11.3
2900
404
34
386
CPIR-21
25±1
40
85
70+1
90+1
135+4
35.6
14.4
3670
511
34
488
CPIR-22
25±1
40
85
85±1.5
90+1
135+4
35.6
17.4
4450
620
34
592
CPIR-23
30±1
40
95
85±1.5
100+1
155+4
39.3
21
5930
826
38
799
CPIR-24
33±1
40
105
85±1.5
106+1
171+5
42.7
23
7060
983
42
967
CPIR-25
22±1
36
80
20±0.5
80+1
124+3
32
3.6
780
115
28.8
103.7
CPIR-26
26±1
36
85
25±0.5
88+1
137+4
34.6
5.33
1230
184
30.6
163
CPIR-27
33±1
49
113
40±0.5
115+1
179+5
45.6
10.8
3307
492.5
55.4
598

*   lm: Average length of the magnetic circuit
** Ac: Effective cross-sectional area

Cores with customized dimensions are available upon request.


Schematic drawing of a core with dimensions a, b, c, d, e, and f.

Comparison in B-H hysteresis loops between a rectangular core and a C-typed core.

 
 
Physical Properties of Fe-Based Amorphous Ribbons
Magnetic Properties of C-Cores
Ribbon Thickness (mm)
23 - 28
Saturation Induction (Tesla)
1.56
Density (g/cm3)
7.18
Permeability  (depending on gap size)
variable
Curie Temperature (oC)
400
Saturation Magnetostriciton Coefficient  (ppm)
< 27
Crystallization Temperature (oC)
510
Resistivity  (mW.cm)
130
Continuous Service Temperature (oC)
150
Coercivity  (A/m)
< 4
Thermal Expansion (ppm/oC)
7.6
 
Vicker’s Hardness
900
 
Tensile Strength (109 N/m2)
1.0 - 1.7
 

 

Saturation Induction vs. Temperature

Permeability vs. Temperature

Core Loss vs. Flux Density


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