Electromagnetic interference (EMI) filters are crucial for a wide range of equipment and devices. Installing an EMI filter helps them function as intended and prevent them from interfering with other devices. Electromagnetic compatibility (EMC) is also a key component of meeting the compliance requirements of global regulations and many industry standards. For EMI filters to provide desired performance, they must be installed correctly. Following best practices for installing EMI filters helps in optimizing their performance and ensures safe compliance margins for the devices.
|Less than 1V
|140% of rated current for 15 minutes
|Less than 2% @ full rated current
|≤0.2A@380/230VAC and 50Hz
|Dielectric Withstanding Voltage
|1000VDC (line to line) 1000VDC (line to case)
|DC Insulation Resistance
|As Per MIL-STD-202 Method 202
|As Per MIL-STD-202 Method 211
|As Per MIL-F-15733
|≥70dB@150K-10GHz As Per MIL-STD-220A, Under Load Condition
While certain best practices apply to almost all EMI filter installations, the installation process for each filter can be slightly different. Because of this variation, be sure to consult the product literature for the EMI filter when installing it or contact application engineering. With that in mind, here are some of the most important recommended installation practices for EMI filters.
The following tips can help ensure proper EMI grounding: