Adopting SPWM technology, this inverter offers superior quality pure sine wave
output with the following advantages:
1) Good instantaneous response
2) Low wave form distortion
3) Stable output voltage
4) Super EMI parameter
5) Input and output are completely isolated
6) Priority for city power AC output
7) Full protections against:
a) Over / low voltage for DC input
b) Wrong electrode connection for DC input
c) Over voltage for AC output
d) Over rated power for AC output
e) Output short circuit
f) Over temperature inside inverter

Notes:
1) Priority for city power AC input means this inverter usually works under
city power mode, when city power fails or city power input voltage is
under 176V, it will turn to battery mode automatically, and detect the
status of city power timely; when city power recovers to over 187V, it will
turn back to city power AC input; this function can prolong user life of
battery
2) Inverter works under battery input mode, when inverter fails, overloads,
output short-circuit or over temperature inside inverter occurs, it will
turn to city power input mode to keep output, at the same time buzzer
alarms to remind user

Products available:
1) DC 48V input model designed for telecom system
2) DC 110V input model designed for railway system
3) DC 220V input model designed for electric power system