E and EFS cores

E cores are used for low to medium power transformers and transducers for a frequency range from 10 to 500 kHz. These high-frequency transformers generally consist of two mechanically produced wire-wound coils for primary and secondary excitation, the E core pairs and special clamps.

Transformers can transfer a maximum power of several kW in dependence of material and design.

Common-mode chokes are another important field of application for EE and EI cores. They are mainly used in small-signal technology and contain medium perm materials K4000 and K6000.

 

The product range comprises:

  • E cores according to IEC 61246
  • ETD cores according to IEC 61185
  • EP cores according to IEC 61596
  • ER cores
  • PE cores

  

TypeDrw. no.nominal AL-values / nHdatasheet
K2004K2006K2008K2010K4000K6000
E 6,3/21340600700
E 8/21470750960
E 10/3168010001400
E 13/418509209201200
E 15/4195010001100
E 16/511050115011501600
E 16/6/7,41220023002300
EFS 16/7/12210001050
E 20/61135015001500
E 20/111245026002800
E 20/9/111250026003000
E 25/711900205020503200
E 25/1112650270030004600
EFS 25/13/13226002800
E 30/71190020502050
EFS 30/11/15326252700
E 32/91230025502550
E 36/111315034503450
EFS 36/27/19,5161006400
E 42/151350036003900
E 42/201500051005500
E 55/211580061006700
E 65/271720074507900
E 70/321860091509850
E 80/201415044004900
E 100/281550058006300

E cores are made of K2004, K2006, K2008, K2001, K 2024 and K2500. For power materials, the following upper frequency limits can be observed depending upon excitation:

K 2004 ≤ 100 kHz
K 2006 ≤ 200 kHz
K 2008 ≤ 300 kHz
K 2010 ≤ 500 kHz
K 2001 ≤ 1.5 MHz 
K 2024 ≤ 100 kHz
K 2026 ≤ 100 kHz
K 2500 ≤ 100 kHz

   

Drawing 1

 

Drawing 2

 

Drawing 3