... inside 5,CE ,SONCAP solar system use solar inverter ups 2500w Main features:1.Pure sinewave output,can be used ... AVR function.4.Inner-equipped protection for over-load,short-circuit,over-voltage,low-voltage,over-heating,etc.5.Easy ... 48V model: 54.0VdcProtectionDC input polarity protection, DC input short circuit protection( when battery isconnected), DC output over current protectionPHYSICAL ...