Greencisco IGBT battery chargers for esteemed power substations [ 48V,110V,220V,230V/50A to 3000A] are made with high frequency IGBT rectifier, with LCD touch screen display and RS485 communication, with parallel current sharing functions and master/slave functions [ one charger is working, the other chargers are standby],can be remotely monitored or controlled for power substations, which meet customers' all technology requirements.