Electrocorder DC-3VA DC Energy Data LoggerOverview The Electrocorder DC 3VA is a DC voltage, current and energy data logger for PV arrays, battery systems, charging circuits, DC supplies, traction systems, telecoms circuits and other DC installations. Use it when you need DC voltage and DC current together, so the behaviour of a DC system can be reviewed over time. The DC 3VA records up to two DC voltage channels with respect to 0 V or ground and one DC current channel using the selected