Views: 0 Author: Site Editor Publish Time: 2023-12-11 Origin: Site
For smart meters, voltage signal collection is required, and the voltage and sampling methods of single-phase and three-phase meters are different. The picture below shows the voltage acquisition input terminal of a single-phase ammeter.
Yint Electronics recommends using varistor for input overvoltage protection. The recommended models are 14D or 20D products with voltages of 470V (single-phase 220V) ~ 820V (three-phase 380V):
