Ferroxcube
EP cores and accessories
Core sets for general purpose transformers and power applications
Clamping force for A
L
measurements, 30
±10
N.
GRADE
3C81
A
L
(nH)
40
±3%
63
±3%
100
±3%
160
±3%
250
±5%
1700
±25%
3C91
3C94
1700
±25%
40
±3%
63
±3%
100
±3%
160
±3%
250
±5%
1650
±25%
3C96
3F3
1500
±25%
40
±3%
63
±3%
100
±3%
160
±3%
250
±5%
1325
±25%
3F35
1100
±25%
µ
e
≈
40
≈
62
≈
99
≈
158
≈
247
≈
1680
≈
1680
≈
40
≈
62
≈
99
≈
158
≈
247
≈
1630
≈
1480
≈
40
≈
62
≈
99
≈
158
≈
247
≈
1310
≈
1090
AIR GAP
(µm)
≈
1000
≈
540
≈
300
≈
170
≈
100
≈
0
≈0
≈
1000
≈
540
≈
300
≈
170
≈
100
≈
0
≈
0
≈
1000
≈
540
≈
300
≈
170
≈
100
≈
0
≈
0
EP13
TYPE NUMBER
EP13-3C81-E40
EP13-3C81-A63
EP13-3C81-A100
EP13-3C81-A160
EP13-3C81-A250
EP13-3C81
EP13-3C91
EP13-3C94-E40
EP13-3C94-A63
EP13-3C94-A100
EP13-3C94-A160
EP13-3C94-A250
EP13-3C94
EP13-3C96
EP13-3F3-E40
EP13-3F3-A63
EP13-3F3-A100
EP13-3F3-A160
EP13-3F3-A250
EP13-3F3
EP13-3F35
Core sets of high permeability grades
Clamping force for A
L
measurements, 30
±10
N.
GRADE
3E27
3E5
3E55
A
L
(nH)
4600
±
25%
7000 +40/-30%
100
±3%
160
±3%
250
±5%
315
±5%
400
±8%
630
±15%
7000 +40/-30%
3E6
8500 +40/-30%
µ
e
≈
4540
≈
6900
≈
99
≈
158
≈
247
≈
311
≈
395
≈
622
≈
6900
≈
8400
AIR GAP
(µm)
≈
0
≈
0
≈
310
≈
180
≈
110
≈
80
≈
65
≈
40
≈
0
≈
0
TYPE NUMBER
EP13-3E27
EP13-3E5
EP13-3E55-A100
EP13-3E55-A160
EP13-3E55-A250
EP13-3E55-A315
EP13-3E55-A400
EP13-3E55-A630
EP13-3E55
EP13-3E6
2004 Sep 01
3