... double conversion design. Sine wave pulse width modulation. IGBT inverter design. Advanced Battery Managemen. Model No.NS-1KVANS-2KVANS ... Indicator StatusInput/Output Voltage,Frequency,Output Power,Battery,Utility,Inverter,Overload,Fault,BypassCommunication PortRs232/USBInterfaceMonitor of Utility Fault,Power ... 29.50 32.00 79.00 85.00 Single Phase Online & Sine Wave Uninterruptible Power Supply(UPS)