Operating Principles & Precautions

About Input

How to Use a Three-Phase EMI Filter with Single-Phase Input?

Our three-phase/three-wire EMI filters can also be used with single-phase input.
The attenuation characteristics for both three-phase and single-phase operation (example: TAC-30‑683) are shown below, and there is no significant difference between them.
The rated input voltage of a three-phase EMI filter is AC 500 V, it can also be used with AC 100 V or AC 200 V input.

Three-phase input Attenuation Characteristics (Measurement diagram: See Fig.1 and Fig.2)

Three-phase input Attenuation Characteristics (Measurement diagram: See Fig.1 and Fig.2)

Single-phase input Attenuation Characteristics (Measurement diagram: See Fig.3 and Fig.4)

Single-phase input Attenuation Characteristics (Measurement diagram: See Fig.3 and Fig.4)

Please conduct sufficient testing in your equipment before use.

Three-phase input attenuation measurement diagram

Fig.1 Differential mode attenuation measurement diagram
Fig.1 Differential mode attenuation measurement diagram
Fig.2 Common mode attenuation measurement diagram
Fig.2 Common mode attenuation measurement diagram

Single-phase input attenuation measurement diagram

Fig.3 Differential mode attenuation measurement diagram
Fig.3 Differential mode attenuation measurement diagram
Fig.4 Common mode attenuation measurement diagram
Fig.4 Common mode attenuation measurement diagram
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