Panel meters fail when used with inverters

摘要

After reading Jim Rowe’s review of mains panel meters(December 2020;siliconchip.com.au/Article/14678)， I bought a PZEM-051 panel meter to fit to a portable power supply.This consists of two deep-cycle AGM batteries wired in series with provision to connect up to three 24V DC to 230V AC inverters.Two of the inverters are modified square wave types，while one is a pure sinewave type.