AIMS Power Global LF Series, User Manual

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7
Overload Capacity: The Global LF series inverters have high overload capacities, making it ideal to handle
demanding loads.
1. For 110%<Load<125%(±10%), no audible alarm for 14 minutes, beeps 0.5s every 1s in the 15th minute,
a nd Fault (Turn off) after the 15th minute.
2. For 125%<Load<150%(±10%), beeps 0.5s every 1s and Fault (Turn off) after 1 minute.
3.
For 300%
≥
Load>150%(±10%), beeps 0.5s every 1s and Fault (Turn off) after 20s.
Caution:
After the inverter is switched on, it takes time for it to self-diagnose and ready to deliver full power. Hence,
always switch on the load(s) after a few seconds of switching on the inverter. Avoid switching on the inverter
with the load already switched on. This may prematurely trigger the overload protection. When a load is
switched on, it may require an initial higher power surge to start. If multiple loads are being powered, they
should be switched on one by one so that the inverter is not overloaded by the higher starting surge if all the
loads are switched on at once.
2.5.2 AC Charger
The inverter charger is equipped with an active PFC (Power Factor Corrected) multistage battery charger.
The PFC feature is used to control the amount of power used to charge the batteries in order to obtain a
power factor as close as possible to 1.
Unlike other inverters whose max charging current decreases according to the input AC voltage, the Global
LF series charger is able to output max current as long as the input AC voltage is in the range of 164-
243VAC (95-127VAC for 120V model), and AC frequency is in the range of 48-54Hz (58-64Hz for
60Hz model).
The Global LF series inverter has a very rapid charge current available, and the max charge current can be
adjusted from 15%-100% (based on model) via a liner switch to the right of the battery type selector. This
will be helpful if you are using our powerful charger on a small capacity battery bank. Fortunately, the liner
switch can effectively reduce the max charging current to 15-20% of its peak (based on model). Choosing
“0” on the Battery Type Selector will disable the charging function.
Caution:
Turn the charge current control switch gently to avoid breakage due to over-turning. Not covered
under warranty.
There are 3 charging stages:
Bulk Charging: (
fast charge LED solid
) this is the initial stage of charging. While Bulk Charging, the
charger supplies the battery with controlled constant current. The charger will remain in Bulk charge until
the Absorption charge voltage (determined by the Battery Type selection) is achieved.
A software timer will measure the time from A/C start until the battery charger reaches 0.3V below the
boost voltage, then take this time asT0 and T0×10 = T1.
Absorb Charging: (
fast charge LED blinking
) This is the second charging stage when the fast charge LED is
flashing and begins after the absorb voltage has been reached. Absorb Charging provides the batteries with a
constant voltage and reduces the DC charging current in order to maintain the absorb voltage setting. In this
period, the inverter will start a T1 timer; the charger will keep the boost voltage in Boost CV mode until the
T1 timer has run out. Then drop the voltage down to the float voltage. The timer has a minimum time of 1
hour and a maximum time of 12 hours.
Float Charging: (
float charge LED solid
) The third charging stage occurs at the end of the Absorb
Charging time. While Float charging, the charge voltage is reduced to the float charge voltage