... 6th IGBT, 4 layer PCB, SMD 2. 1KVA-20KVA 3. Energy saving 4. Digital system UPS power supply descriptionUPS ... power MP11-15KVA to 20KVA: 1. 1/1, 6th IGBT, 4 layer PCB ... , SMD 2. 1KVA-20KVA 3. Energy saving 4. Digital system UPS power MP11- ... 15KVA to 20KVA: 1. Pure sine wave output, true on-line ...