Hybrid solar unit EasySolar-II 48/3000/35-32 MPPT 250/70 GX

The hybrid operation of EasySolar is intended for use where there is a permanently available distribution network connected to its AC input. In this mode, the unit prioritizes energy from the PV array and/or battery over energy from the grid. The hybrid function must be set up adequately in EasySolar (remotely or via the MK3-USB interface and VE.Configure 3 software - not included). If the mains is present, EasySolar is permanently connected to the mains, even if it does not need the mains immediately (the battery is not discharged and the inverter is not overloaded). A minimum amount of energy is continuously drawn and/or supplied from the grid regardless of the current operating status (small technical measurable overflows to the grid are present).The grid prefers to draw energy from a photovoltaic array and/or battery to power AC appliances. The photovoltaic array generates the electricity that is fed, in priority and directly without the battery, to the 230 V AC appliances via the inverter/charger. If the PV array generation is higher than the consumption by the appliances, the excess energy is stored in the battery in an adaptive manner using an MPPT controller. If the battery is charged, the MPPT controller automatically throttles the production from the PV array (or the energy is purposely supplied to the distribution grid depending on the setting). If the battery is discharged below a preset level, the PV array and battery draw is terminated and the AC appliances are fully powered from the distribution grid. Once the battery is partially charged from the PV system (by 5-10%), the AC appliances are automatically powered again from the PV array and/or battery. As soon as the AC consumption of the appliances is greater than 80-90% of the maximum continuous power of the inverter/charger, the inverter/charger draws additional power adequately from the grid (GridAssist function) to avoid overloading the inverter. In the event of a grid blackout, the power supply to the AC appliances and battery charging from the PV array continues uninterrupted (EasySolar's operation is fully independent of the grid). During a grid outage, the battery is discharged to a deeper (defined) level than when the grid is present. At the same time, it can only power AC appliances up to its maximum continuous inverter output. If the inverter/charger shuts down to a discharged battery during a grid failure and then the grid is restored, the inverter/charger automatically activates, starts powering AC appliances and recharges the battery from the grid to the minimum preset value. In principle, this is called DC coupling. The system has the possibility to activate the protection function of the lead-acid battery against the negative effect of long-term discharge (preferably using solar energy to recharge the battery or recharging the battery from the mains). EasySolar can be combined with a mains inverter(s) at the input or output (AC coupling) under certain conditions.