... AbilityUsing the pure-online double conversion technology, with the output isolation transformers, static bypass, and maintenance bypass.Inverter ... Load<5%Imbalance voltageBalance load≤1%,Imbalance load≤3%Phase shift angleBalance load≤±1°, Imbalance load≤±2° ... failures300,000 HoursotherDustproof and damp-proof, isolating inverter transformer, Lightning Surge absorption, Static switches and manual ...