Input filters, also known as mains filters, are electronic components used in electrical or electronic devices to suppress unwanted electromagnetic interference that could enter the device via the mains or other input lines and thus cause unwanted interactions.
These filters also help to ensure that the appliance itself does not emit any interference into the mains supply. This is important in order to be able to comply with the EMC limit values specified in the standards and not to interfere with other devices in the network.
For proper and trouble-free operation!
NF-U
Space-saving mounting under the servo or frequency inverter
- Customized VFD matched filters
- Available for many brands
- Low leakage current with high attenuation
- Use of VFDs possible in residential areas
- Compliance with the limits even with long motor cables
- Suppression to EN 55011/55022 class A and B
- Suppression to EN 61800-3 Category C1 and C2
- Manufactured according to EN 60939, UL 1283, RoHS
| File | Size |
|---|---|
| Data_Sheets » EMC » Footprint_Filters » EPA | |
| NF-U-M400.pdf | 790.91 K |
| NF-U-M700.pdf | 686.82 K |
| NF-U-SE.pdf | 152.54 K |
| NF-U-SK.pdf | 185.45 K |
| NF-U-SP.pdf | 126.67 K |
| Data_Sheets » EMC » Footprint_Filters » Mitsubishi | |
| NF-U-MI-A540.pdf | 306.93 K |
| NF-U-MI-E500.pdf | 185.74 K |
| NF-U-MI-F700.pdf | 307.03 K |
| NF-U-MI-FR-D-E-720-LL.pdf | 300.42 K |
| NF-U-MI-FR-D-E-720.pdf | 319.42 K |
| NF-U-MI-FR-D-E-740-LL.pdf | 320.35 K |
| NF-U-MI-FR-D-E-740.pdf | 342.74 K |
| NF-U-MI-S500.pdf | 222.55 K |
| Data_Sheets » EMC » Footprint_Filters » CT_Emerson_Nidec | |
| NF-U_Control Techniques.pdf | 617.49 K |
| NF-U_Emerson.pdf | 617.49 K |
| NF-U_Nidec.pdf | 617.49 K |
| Data_Sheets » EMC » Footprint_Filters » Delta | |
| NF-U_DELTA.pdf | 380.07 K |
| Data_Sheets » EMC » Footprint_Filters » Lenze | |
| NF-U-LE-8200v.pdf | 120.29 K |
| NF-U_LENZE_8200.pdf | 120.92 K |
| NF-U_LENZE_8400.pdf | 266.09 K |
| Data_Sheets » EMC » Footprint_Filters » LSIS | |
| NF-U_LS.pdf | 595.12 K |
| Data_Sheets » EMC » Footprint_Filters » Hitachi | |
| NF-U-HI-LSJ100.pdf | 243.88 K |
| NF-U-LSJ300.pdf | 193.77 K |
| Data_Sheets » EMC » Footprint_Filters » Siemens | |
| NF-U-SI-MM4_1.pdf | 287.36 K |
| NF-U-SI-MM4_2.pdf | 288.07 K |
| NF-U-SI-MM4_3.pdf | 288.08 K |
| NF-U_SIEMENS.pdf | 676.82 K |
| Data_Sheets » EMC » Footprint_Filters » Fuji | |
| NF-U-FU-C11S.pdf | 191.05 K |
| NF-U-FU-E11S.pdf | 163.56 K |
| NF-U-FU-G11S.pdf | 180.97 K |
| Data_Sheets » EMC » Footprint_Filters » Omron | |
| NF-U-OM-FV.pdf | 166.34 K |
| NF-U-OM-JV.pdf | 119.25 K |
| NF-U-OM-MV.pdf | 153.38 K |
| NF-U-OM-RV.pdf | 244.90 K |
| Data_Sheets » EMC » Footprint_Filters » Yaskawa | |
| NF-U-YA-F7.pdf | 166.02 K |
| NF-U-YA-G5P5.pdf | 152.93 K |
| NF-U-YA-J7.pdf | 240.40 K |
| NF-U-YA-V7.pdf | 241.23 K |
| Data_Sheets » EMC » Footprint_Filters » Common | |
| NF-U common.pdf | 3.77 M |
| EPA_Footprint-RFI-filters_NF-U_data-sheet.pdf | 718.55 K |
| CAD » EMV » NF-U | |
| FESS.zip | 8.63 M |
| NF-U-LE-8400.zip | 649.33 K |
| NF-U-LE-i950.zip | 548.35 K |
| NF-U-M400_NF-U-M700.zip | 1.19 M |
Footprint filters are already available for many inverter brands or can be designed by us.
Footprint filters for following brands can be delivered as standard:
EPA, Mitsubishi Electric, Delta Electronics, Yaskawa, Omron, Lenze, KEB, Hitachi, Siemens, Fuji, Moeller, Toshiba, Control Techniques, LG, LS, Shenzen, Schneider Electric, Sanyo Denki and many more.
If you cannot find your desired type on this list, please contact us.
Standards
The inverter-filter-combinations are designed and tested to comply with the limits of the following standards mentioned:
DIN EN 61800-3 “Adjustable speed electrical power drive systems – EMC requirements and test methods” and DIN EN 55011 “Industrial, scientific and medical radio-frequency devices (ISM devices) – radio disturbance characteristics – limits and methods of measurement”.
Technical information
For further information please check the separate data sheets for each filter series available. There you will find the dimensions, the filter circuits and the electrical data.
Leakage current
Especially in single-phase applications, increased leakage current is present. For three phase applications, the leakage is very low under normal conditions (symmetry of the three phases). The highest values occur when switching on or in the absence of one or two phases. All NF-U types (footprint filters) are available on request as a “low leakage current version”.