This series low frequency (power frequency) power inverter 7KW-12KW has been proved most reliable and robust for loads like air-conditioners, driller, heater with low frequency transformer and simplest but functional circuit! They are built-in AC charger, AC auto-switch-over UPS, priority setting, battery type setting, settable AC charging current,Grid AC or Genset/generator input! What's more,10-year life pure copper transformer and easy to replace PCBA boards make them unbeatable even under terrible environments! Make you count on it without any worry!

Features
Robust overloading ability up to 300% (20 sec.)
Low quiescent current, power saver mode
3- steps intelligent battery charging
Uses PFC(power factor correction) for charger
10ms typical transfer time
15sec delay before transfer when AC resumes
Battery/AC priority switch Available for off grid solar/wind system
Auto Generator/Genset Starter(Dry Contact)
Remote Control by RJ11 switch
8 Battery types Selectable

Full Protection:
Reverse connection,Overloading, over-voltage, low voltage, over current, short-circuit, over heat, grounding, batttery detect etc.