EMI Filter Selection Guide for Industrial Equipment

Why EMI Filters Matter

Electromagnetic interference (EMI) filters are essential components for achieving conducted emissions compliance. They attenuate high-frequency noise on power lines, preventing equipment from interfering with other devices and ensuring compliance with EMC standards.

Key Selection Criteria

When choosing an EMI filter, consider these critical parameters:

1. Voltage Rating: Must match or exceed the system voltage (e.g., 200-440VAC for industrial three-phase systems)
2. Current Rating: Select a filter rated for the maximum operating current of your equipment
3. Attenuation Performance: Check the insertion loss curve across the frequency range of interest
4. Phase Configuration: Single-phase or three-phase to match your power system
5. Mounting Type: DIN rail, panel mount, or chassis mount

TESTUPS TPF486C EMI Filter

Our TPF486C power line EMI filter provides exceptional attenuation of over 60dB from 150 kHz to 30 MHz, making it ideal for industrial and commercial equipment requiring compliance with CISPR 11, EN 55032, and similar conducted emissions standards.