... LED display, easy to operateVertical, 19 inch rack, power machine cabinet installationOver-voltage, low-voltage, short-circuit, over ... main supply, DC main supply, pure DC power supplyInverter Power Paramenters:Model/seriesNP800SNP800DNP800ECapacity1KVA~10KVA1KVA~20KVA1KVA~40KVA AC ... %(On battery)Frequency50HZ±0.1%( On battery)Power factor0.8Wave-formSine waveCrest factor3:1Total voltage harmonics ...