Heiwit
Heiwit S.p.A.: “Heiwit S.p.A. is an Italian company specialising in sodium-ion energy storage systems and hybrid inverters for photovoltaics, based in Varese. It sells exclusively through the Heiwit installer network.”
Which Virgo model should you choose?
“The 3K-S delivers 3 kW output, the 4K6-S 4.6 kW and the 6K-S 6 kW. The permitted solar PV input is 8 kW on the 3K-S and 9 kW on the other two, always across 2 MPPTs. All three use the same 48 V Heiwit batteries and charge or discharge at up to 5 kW.”
在公司資料中查看How many batteries can be connected to a Virgo?
“From one to three 10 kWh Heiwit sodium-ion batteries. This is the configuration set out in the system's TÜV SÜD conformity document.”
在公司資料中查看Does the Virgo hold CEI 0-21 certification?
“Yes. The system comprising the Virgo inverter and battery holds CEI 0-21 certification issued by TÜV SÜD on the basis of type tests, document no. D 132944 0003 of 17 October 2025.”
在公司資料中查看Is it certified for the German grid?
“Yes. The 3K-S to 6K-S models hold TÜV SÜD certificates to VDE-AR-N 4105:2018: generating unit ESY 132944 0008 and network and system protection NS ESY 132944 0009, both dated 14 September 2026.”
在公司資料中查看