... detection 10.Low voltage drive function( LV40-70 special DC - DC converter converts 39V-100V to 280V-420V to drive solar pump ... the cost of solar panels and prevent the danger of DC high voltage.5.Applications include:a) residents living waterb) ... ,producing and selling high- frequency switching power supply,DC/AC power inverters, DC/DC converter, Solar inverter, solar pump inverter,on grid inverters ...