MEWOI ELECTRONICS Co., Ltd. produce the permalloy core (Nickel alloy lamination core) and silicon steel core (Electrical steel Lamination core)
We supply our customers with the best quality of having competitive price, quality systems according to customer’s request.
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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EI 14 | 14.00 | 8.75 | 3.50 | 1.75 | 3.50 | 7.00 | 1.75 | 1.75 | 14.00 |
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| 0.20 / 0.35 | PB / PC |
EI16 | 16.00 | 12.00 | 4.00 | 2.00 | 4.00 | 10.00 | 2.00 | 2.00 | 16.00 |
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| 0.20 / 0.35 | PB / PC |
EI19 | 19.00 | 12.50 | 4.75 | 2.375 | 4.75 | 10.00 | 2.50 | 2.50 | 19.00 |
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| 0.20 / 0.35 | PB / PC |
EI186 | 19.08 | 8.75 | 4.77 | 2.385 | 4.77 | 6.35 | 2.40 | 2.40 | 19.08 |
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| 0.20 / 0.35 | PB / PC |
EI187 | 19.08 | 13.51 | 4.77 | 2.385 | 4.77 | 11.11 | 2.40 | 2.40 | 19.08 |
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| 0.20 / 0.35 | PB / PC |
EI24 | 24.00 | 15.00 | 6.00 | 3.00 | 6.00 | 12.00 | 3.00 | 3.00 | 24.00 |
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| 0.20 / 0.35 | PB / PC |
EI25.4 | 25.40 | 16.10 | 6.40 | 3.10 | 6.40 | 13.10 | 3.00 | 3.00 | 25.40 |
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| 0.20 / 0.35 | PB / PC |
EI28 | 28.00 | 21.50 | 7.00 | 3.50 | 7.00 | 18.00 | 3.50 | 3.50 | 28.00 |
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| 0.20 / 0.35 | PB / PC |
EI30 | 30.00 | 20.00 | 10.00 | 5.00 | 5.00 | 15.00 | 5.00 | 5.00 | 30.00 |
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| 0.20 / 0.35 | PB / PC |
EI35 | 35.00 | 24.50 | 9.60 | 5.00 | 7.70 | 19.50 | 5.00 | 5.00 | 35.00 |
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| 0.20 / 0.35 | PB / PC |
EI41 | 41.00 | 27.00 | 13.00 | 6.00 | 8.00 | 21.00 | 6.00 | 6.00 | 41.00 |
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| 0.20 / 0.35 | PB / PC |
EI48 | 48.00 | 32.00 | 16.00 | 8.00 | 8.00 | 24.00 | 8.00 | 8.00 | 48.00 |
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| 0.20 / 0.35 | PB / PC |
EI60 | 60.00 | 40.00 | 20.00 | 10.00 | 10.00 | 30.00 | 10.00 | 10.00 | 60.00 |
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| 0.20 / 0.35 | PB / PC |
EI66 | 66.00 | 44.00 | 22.00 | 11.00 | 11.00 | 33.00 | 11.00 | 11.00 | 66.00 |
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| 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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EL 7.72 ( EL 100 ) | 7.72 | 9.90 | 2.54 | 1.32 | 1.27 | 8.48 | 1.42 |
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| 0.15 / 0.20 | PB / PC |
EL 7.94 | 7.94 | 9.90 | 2.54 | 1.32 | 1.38 | 8.48 | 1.42 |
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| 0.15 / 0.20 | PB / PC |
EL 12.7 | 12.72 | 11.11 | 3.18 | 1.59 | 3.18 | 9.53 | 1.58 |
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| 0.20 / 0.35 | PB / PC |
EL 14 | 14.00 | 10.60 | 3.50 | 1.80 | 3.50 | 8.80 | 1.80 |
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| 0.20 / 0.35 | PB / PC |
EL 16 | 16.00 | 14.00 | 4.00 | 2.00 | 4.00 | 12.00 | 2.00 |
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| 0.15 / 0.20 / 0.35 | PB / PC |
EL 16(LOSS) | 16.00 | 16.00 | 4.80 | 2.40 | 3.20 | 13.60 | 2.40 |
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| 0.15 / 0.20 / 0.35 | PB / PC |
EL 19 | 19.00 | 15.00 | 4.75 | 2.375 | 4.75 | 12.50 | 2.50 |
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| 0.15 / 0.20 / 0.35 | PB / PC |
EL 19(LOSS) | 19.00 | 18.00 | 4.90 | 2.40 | 4.65 | 14.00 | 4.00 |
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| 0.15 / 0.20 / 0.35 | PB / PC |
EL 186 | 19.04 | 11.13 | 4.76 | 2.38 | 4.76 | 8.73 | 2.40 |
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| 0.20 / 0.35 | PB / PC |
EL 187 | 19.08 | 15.90 | 4.77 | 2.385 | 4.77 | 13.50 | 2.40 |
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| 0.20 / 0.35 | PB / PC |
EL 20 | 20.00 | 20.00 | 6.00 | 3.00 | 4.00 | 17.00 | 3.00 |
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| 0.20 / 0.35 | PB / PC |
EL 24 | 24.00 | 18.00 | 6.00 | 3.00 | 6.00 | 15.00 | 3.00 |
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| 0.20 / 0.35 | PB / PC |
EL 24-25 | 25.40 | 19.05 | 6.35 | 3.175 | 6.35 | 15.875 | 3.175 |
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| 0.20 / 0.35 | PB / PC |
E 186 | 19.05 | 9.70 | 4.77 | 2.38 | 4.76 | 7.30 | 2.40 |
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| 0.20 / 0.35 | PB / PC |
E 25.4 | 25.40 | 12.70 | 6.35 | 3.175 | 6.35 | 9.525 | 3.175 |
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| 0.20 / 0.35 | PB / PC |
PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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ED 8(8X11) | 8.00 | 11.00 | 2.40 | 1.20 | 1.60 | 8.30 | 2.70 |
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| 0.15 / 0.20 | PB / PC |
ED 8(8X14) | 8.00 | 14.00 | 2.40 | 1.20 | 1.60 | 11.30 | 2.70 |
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| 0.15 / 0.20 | PB / PC |
ED 12.6 | 12.60 | 17.00 | 3.80 | 1.90 | 2.50 | 12.90 | 4.10 |
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| 0.20 / 0.35 | PB / PC |
ED 20 | 20.00 | 26.00 | 6.00 | 3.00 | 4.00 | 20.00 | 6.00 |
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| 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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EE 20 A | 20.00 | 14.00 | 6.00 | 3.00 | 4.00 | 11.00 | 3.00 |
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| 0.20 / 0.35 | PB / PC |
EE 20 B | 20.00 | 6.00 | 6.00 | 3.00 | 4.00 | 3.00 | 3.00 |
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| 0.20 / 0.35 | PB / PC |
EE 21.4 | 21.40 | 11.10 | 5.80 | 2.85 | 4.95 | 8.10 | 3.00 |
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| 0.20 / 0.35 | PB / PC |
EE 21.4 GAP | 21.40 | 11.10 | 5.80 | 2.85 | 4.95 | 8.10 | 3.00 |
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| 0.04 |
| 0.20 / 0.35 | PB / PC |
EE 24-25 A | 25.40 | 12.70 | 6.35 | 3.175 | 6.35 | 9.525 | 3.175 |
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| 0.20 / 0.35 | PB / PC |
EE 24-25 B | 25.40 | 6.35 | 6.35 | 3.175 | 6.35 | 3.175 | 3.175 |
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| 0.20 / 0.35 | PB / PC |
EE 24-25 A GAP | 25.40 | 12.70 | 6.35 | 3.175 | 6.35 | 9.525 | 3.175 |
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| 0.04 |
| 0.20 / 0.35 | PB / PC |
EE 24-25 B GAP | 25.40 | 6.35 | 6.35 | 3.175 | 6.35 | 3.175 | 3.175 |
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| 0.04 |
| 0.20 / 0.35 | PB / PC |
EE 52 | 52.00 | 14.75 | 13.64 | 6.82 | 12.36 | 7.93 | 6.82 |
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| 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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UI 12.7 | 12.70 | 12.70 |
| 3.175 | 6.35 | 9.525 | 3.175 | 3.175 | 12.70 |
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| 0.20 / 0.35 | PB / PC |
UI 19 | 19.00 | 12.50 |
| 2.50 | 14.00 | 10.00 | 2.50 | 2.50 | 19.00 |
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| 0.20 / 0.35 | PB / PC |
UI 24 | 24.00 | 15.00 |
| 3.00 | 18.00 | 12.00 | 3.00 | 3.00 | 24.00 |
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| 0.20 / 0.35 | PB / PC |
UI 30 | 30.00 | 25.00 |
| 10.00 | 10.00 | 15.00 | 10.00 | 10.00 | 30.00 |
| 2.50 | 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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U 8.58 | 8.58 | 26.42 |
| 2.03 | 4.52 | 22.35 | 4.07 |
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U 18 | 18.00 | 47.92 |
| 5.00 | 8.00 | 37.92 | 10.00 |
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| 0.20 / 0.35 | PB / PC |
U 18.34 | 18.34 | 42.00 |
| 3.17 | 12.00 | 37.70 | 4.30 |
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| 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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UU 2 | 44.00 | 26.00 | 8.50 | 40.00 | 22.00 | 4.50 | 4.00 | 4.00 | 2.00 |
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| 0.20 / 0.35 | PB / PC |
UU 4 | 75.20 | 48.00 | 21.20 | 69.60 | 42.20 | 15.60 | 5.60 | 5.60 | 2.80 |
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| 0.20 / 0.35 | PB / PC |
UU 6 | 111.20 | 72.20 | 27.60 | 104.00 | 65.00 | 20.40 | 7.20 | 7.20 | 3.60 |
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| 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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DU 18 | 15.88 | 34.93 |
| 4.76 | 6.36 | 25.40 | 9.53 |
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| 0.20 / 0.35 | PB / PC |
DU 2023 | 19.05 | 30.17 |
| 4.7625 | 9.530 | 20.64 | 9.53 |
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| 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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MU 36 | 36.00 | 13.20 | 9.10 | 3.00 | 2.05 | 3.00 | 2.00 | 3.30 |
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| 0.20 / 0.35 | PB / PC |
MU 39 | 39.00 | 13.20 | 9.10 | 3.00 | 2.05 | 3.00 | 2.00 | 3.30 |
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| 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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L 28 | 28.00 | 17.875 |
| 3.00 |
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| 3.13 |
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| 0.20 / 0.35 | PB / PC |
L 132 | 132.00 | 144.00 |
| 12.00 |
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| 12.00 |
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| 0.20 / 0.35 | PB / PC |
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PATTERNS | A | B | C | D | E | F | G | H | I | GAP | ØK | T | GRADE |
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zct Ø 10.3 | 10.30 | 7.70 |
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| 0.35 | PC |
zct Ø 12.2 | 12.20 | 8.80 |
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| 0.35 | PC |
zct Ø 13.35 | 13.35 | 9.85 |
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| 0.35 | PC |
We produce a toroidal core with permalloy i.e., a nickel steel plate of high permeability. We are the first and the largest permalloy, nickel steel possessing company in the domestic market, supplying quickly heat treating furnaces, with various sizes and materials and from small quantity to large one, to our clients according to their requests (producing the maximum size of 2100 π in an external diameter).
Particularly, we prevent contacting layers by developing coating technique of raw material and equipment as the first one in Korea, and realize 100% of the property requested by our clients.
Magnetic Specification
Out side Diameter(mm) | Width(mm) | Idustrial Uses |
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90 – 2100 | 5 – 305 | High and Medium Voltage Transformer |
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5 – 120 | 2 – 15 | Low and Medium voltage Transformer |
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Permalloy Strip Materials
Material | Thickness (mm) |
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Permalloy with 78 – 80% Nickel |
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0.05 |
0.07 |
0.10 |
0.15 |
0.20 |
0.20 |
0.35 |
permalloy with 45 – 50% Nickel |
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0.35 |
AC Magnetic Specification
Permeability | PC NI(80%) 0.07T | PC NI(80%) 0.1T | PC NI(80%) 0.15T | PC NI(80%) 0.2T |
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Test Frequency (Hz) | 60 |
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40 Gauss ( 4mT) | 90,000 Min. | 80,000 Min. | 55,000 Min. | 55,000 Min. |
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200 Gauss (20mT) | 110,000 Min. | 95,000 Min. | 75,000 Min. | 75,000 Min. |
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2,000 Gauss(0.2T) | 200,000 Min. | 160,000 Min. | 115,000 Min. | 115,000 Min. |
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0.4 A/m | 100,000 Min. | 100,000 Min. | 60,000 Min. | 60,000 Min. |
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DC Magnetic Specification
Material Type | Thickness (mm) | DC Magnetic Characteristics |
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Initial Permeability(μ i )At 0.4A/m | Maximum Permeability(μ max) | Coercive Force(A/m) | Maximum Flux Density(B10) |
PC ( Ni 78 – 80% ) | 0.07 | 100,000 Min. | 300,000Min. | 1.0Max. | 0.69 T Min. |
0.1 | 100,000 Min. | 300,000Min. | 1.0Max. | 0.69 T Min. |
0.2 | 200,000 Min. | 400,000Min. | 1.0Max. | 0.69 T Min. |
0.35 | 200,000 Min. | 400,000Min. | 1.0Max. | 0.69 T Min. |
0.35 | 200,000 Min. | 400,000Min. | 1.0Max. | 0.69 T Min. |
PB ( Ni 47 – 49% ) | 0.35 | 10,000 Min. | 100,000Min. | 4.8Max. | 1.45 Min. |