Please use a small jeweler’s style flat-head screwdriver to turn the charge current
control switch gently to avoid breakage due to over-turning.
To guarantee the best performance of AC charger when the AC input is from a
generator, the standby generator should be of at least 150% higher capacity than the
inverter.
Warning! Operation with an under-rated generator or generator with unqualified
wave form may cause premature failure which is not under warranty.
2.5.3 Transfer
While in the Standby Mode, the AC input of the inverter is continually monitored. Whenever AC power falls
out of the trip voltages, the inverter automatically transfers back to the Invert Mode with minimum
interruption to your appliances.
The transfer from Standby mode to Inverter mode occurs in approximately 6 milliseconds, with the worst
case of 10 milliseconds. And it is the same time from Inverter mode to Standby mode.
Though it is not designed as a computer UPS system, this transfer time is usually fast enough to hold them
up as devices like computers can generally tolerate a max power loss of 20ms.
There is a 15-second delay from the time the inverter senses that continuously qualified AC is present at the
input terminals to when the transfer is made. This delay is built in to provide time for a generator to spin-up
to a stable voltage and avoid relay chattering. The inverter will not transfer to generator until it has locked
onto the generator’s output. This delay is also designed to avoid frequent switch when input utility is
unstable.
2.5.4 Power Saver
There are two different working statuses for SIGINEER POWER inverter: “Power On” and “Power Off”.
When power switch is in “Unit Off” position, the inverter is powered off.
When power switch is turned to either “Power Saver Auto” or “Power Saver Off”, the inverter is powered
on.
Power saver function is dedicated to conserve battery power when AC power is not or little required by the
loads.
In this mode, the inverter pulses the AC output looking for an AC load (i.e., electrical appliance). Whenever
an AC load (greater than 25 watts) is turned on, the inverter recognizes the need for power and automatically
starts inverting and output goes to full voltage. When there is no load (or less than 25 watts) being detected,
the inverter will automatically goes back into search mode to minimize energy consumption from the battery
bank.
In “Power saver on” mode, the inverter will draw power mainly in sensing moments, thus the idle
consumption is significantly reduced.
The inverter is factory defaulted to detect load for 250ms in every 3 seconds. This power sensing can be
customized to “Unit off charging” via the SW3 on DIP switch.
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