Category: 電能計量表
Shelly Current Transformer Pro 3EM 是一款專業級能源監控配件，專為搭配 Shelly 3EM 裝置使用而設計。它能精確測量單相或三相系統中的電流。
The installation took maybe ten minutes since the clamps are clearly marked, and the current readings match my utility meter within a few watts. It’s a solid upgrade if you’re already tracking three-phase loads.
The clamp fit is snug and the readings match my utility meter almost perfectly. Setup with the 3EM took under ten minutes and now I can finally see exactly which circuit is eating the most power.
Went from vague "estimated usage" to actually seeing per-phase current draw in real time, which was the whole reason I bought these. The clamp design feels solid and the measurements match my utility meter within a couple percent.
