... polarity protection by fuse Cooling: Thermal fan Advantages: 1. Inside transformer with high quality ferrite core, which takes high ... special requirement. Inverter 5000W12V/24V/48V for Offgrfor Solar System Nominal power :5000wattAc output:120V/230VAC 50Hz or 60HzDC ... , ship, traffic lights etc.2> Industrial equipments: solar energy system, wind power, metal halid lamp, high voltage sodium lamp, ...