With or without filter?
If your device is in a metal enclosure, is mains powered and consumes up to 10A, then AC power entry module with integrated EMC filter is the optimal solution for you.
Modules differ in-depth, while DD14 with two-stage EMC filter is only 5mm longer than DD12 with one-stage EMC filter. The designer considered the length of the modules when designing the equipment; no additional modifications to the equipment are necessary.
Our PC uses a 150W switched AC/DC power supply. Let's look at how it complies with the EMC requirements for information technology equipment (ITE) according to EN 55022/32, Class B (equipment intended primarily for use in a residential environment) when using the DD11, DD12 and DD14 modules.
EN 55022/32 defines limits for conducted emissions with quasi-peak and average signal detectors over the applicable frequency range of 150kHz to 30MHz. Both limits must be satisfied.
- all modules have a two-pole switch
- one or two fuse holders 5x20mm
- quick-connect terminals 6.3x0.8mm (DD11 4.8x0.8mm)
- meet safety requirements for ITE according to IEC 60950 and medical equipment according to IEC 60601-1.
- compatible with V-Lock system to prevent unintentional disconnection of the power cord