... and telecommunication, railway,etc. 2.advanced tecnoloy inverter. UPS Power Inverter:SPWM technology, pure sine wave outputCPU control, ... display, easy to operateVertical, 19 inch rack, power machine cabinet installationOver-voltage, low-voltage, short-circuit ... DC main supply, pure DC power supply Pure Sine Wave Inverter Parameters:Model/seriesNP800SNP800DNP800ECapacity1KVA~10KVA1KVA~20KVA1KVA~40KVAAC ...