1) Can be adjusted to 50Hz
2) Protection
a. Output short circuit
b. Overload
c. Battery voltage too high
d. Battery voltage too low
e. Temperature too high
f. 120VAC on inverter output
g. Input voltage ripple too high
3) Non linear load, crest factor 3:1
4) At 25 °C ambient
5) Programmable relay which can be set for general alarm, DC undervoltage or genset start
signal function