Softmagnetic Core Materials | SoftProtector Cores

Product Sheet

SoftProtector Cores to suppress damaging
unbalanced currents

Modern high-power, frequency converter operated systems, especially those that are operated at very high switching frequencies, cause harmful interference currents which, among other things, groove and destroy the bearings of motors as so-called bearing currents. Systems stop unexpectedly, communication problems can arise, the function of sensors can be affected, and even motor terminals can wear out. By using easy-to-retrofit SoftProtector Cores, such a malfunction can be reduced to a minimum so that your system can be operated with a calculable maintenance cycle. It may also be possible to switch 

from hybrid bearings to conventional steel bearings. The SoftProtector Cores absorb the harmful high-frequency part of the interference current and convert it into thermal energy, which can be released without damage via the core surface. When placed correctly, you not only protect the bearings of your engine, but also the entire system.

SoftProtector Cores are working as single turn common mode choke and reduce the asymmetrical radio frequency noise current without affecting the symmetrical power current.

 

Technical specifications:

 
Types / Reference Nom. Dimensions [mm] Finished Dimensions [mm] Lfe
(cm)
Afe
(cm²)
AL nom. @10kHz / 100kHz [μH] Finishing
OD  ID  H OD   ID H   5.000μ     30.000μ    90.000μ
NO5040- MRCxxx 50 40 20 61/41 43/24,5 23 14,14 0,76 MRC557 3,3 / 2,2 MRC357 20,2 / 8,5 MRC057 40,5 / 14,1 oval cased
NO6350- MRCxxx 63 50 30 83/45,5 58/21 34 17,75 1,48 MRC558 5,2 / 3,4 MRC358 31,4/13,2 MRC058 62,9 / 22,0 oval cased
NO8063- MRCxxx 80  63 30 101/62 68/28 36 22,46 1,94 MRC559 5,4 / 3,6 MRC359 32,5/13,6 MRC059 65,0 / 22,7 oval cased
FS130100- MRCxxx 130 100 30 135 95 36 36,13 3,42 MRC560 5,9 / 3,9 MRC360 35,6/14,9 MRC060 71,3/124,9 cased
NO133104- MRCxxx 133  104 20 172/78 131/37 25 37,23 2,20 MRC550* 3,7 / 2,4 MRC350* 22,3/9,3  MRC050*  44,6 / 15,6  oval cased
FS140100- MRCxxx 140  100 25 144 96 31 37,70 3,80 MRC567 6,3 / 4,2 MRC367 38,0/15,9 MRC067 76,0 / 26,6  cased
FS160130 MRCxxx 160  130 25 165 125 30 45,55 2,85 MRC561 3,9 / 2,6 MRC361 23,5/9,9 MRC061 47,1 / 16,5  cased
NO160130- MRCxxx 160 130 30 197/11 155/69 36 45,55 3,42 MRC562 4,7 / 3,1 MRC362 28,3/11,8 MRC062 56,6 / 19,8  oval cased
NO160130- MRCxxx 160 130 30 165 125 36 45,55 3,42 MRC551* 4,7 / 3,1  MRC351* 28,3/11,8 MRC051* 56,6 / 19,8  cased
NO170120- MRCxxx 170  120 25 178 112 32 45,55 4,75 MRC552 6,5 / 4,3  MRC352 39,3/16,5 MRC052 78,6 / 27,5  cased
NO200175- MRCxxx 200 175 30 208 166 37 58,91 2,85 MRC553* 3,0 / 2,0  MRC353* 18,2/7,6 MRC053* 36,4 / 12,7  cased
NO220172- MRCxxx 220  172 60 227,5 165 70 61,58 10,94 MRC554 11,1 / 7,4  MRC354 67,0/28,1 MRC054 134,0/46,9 cased
NO240200- MRCxxx 237 200 30 305/147 249/95 37 68,64 4,22 MRC555* 3,8 / 2,5  MRC355* 23,1/9,7  MRC055* 46,3 / 16,2  oval cased
NO300250- MRCxxx 300 254 30 392/160 326/94 37 87,02 5,24 MRC556* 3,9 / 2,5  MRC356* 22,7/9,5  MRC056* 45,4 / 15,9  cased
The information is not binding and can be adjusted without prior information. 
 
Example of a bearing damage:
 
Without SoftProtector Core: With SoftProtector Core:
 
 

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Important note: For safety and the proper usage, you are requested to approve the offered product specification for your application. These products are designed for general electronic
devices. Performance and safety of this product for applications which could lead to physical harm is not confirmed. Be sure to examine the performance and safety when the product is used
for these applications and take appropriate measures, such as failsafe, to avoid any accident. It is the responsibility of user to take such measures.