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50Hz/60Hz). This will avoid frequent switches between battery and generator. But some sensitive loads will
suffer from the low quality power.
The pros and cons should be clearly realized.
SW3: Power Saver Auto Setting :
In Power Saver Mode, when the SW3 is switched to position“0”, inverter will work in Unit Off Charging
mode, it will stay in standby mode without sensing loads. It won’t output any power even if a load is turned
on. The inverter will not perform any function and only stay idle in this mode. When a qualified AC input
present, it will switch to AC input power to charge the battery and supply the load at the same time.
When the SW3 is switched to position“0”, the inverter is initially in standby mode and sends a pulse to
detect the presence of a load every 3 seconds. Each pulse lasts for 250ms. The inverter will remain in
standby mode until a load has been detected. Then it will wake up from standby mode and start to inverter
electricity from the battery bank to supply the load.
SW4: Frequency Switch:
The output frequency of the inverter can be set at either 50Hz or 60Hz by SW4.
SW5: Solar Mode/AC Mode Priority:
Our inverter is designed with AC priority by default. This means, when AC input is present, the battery will
be charged first, and the inverter will transfer the input AC to power the load. Only when the AC input is
stable for a continuous period of 15 days, the inverter will start a battery inverting cycle to protect the
battery. After 1 normal charging cycle ac through put will be restored.
The AC Priority and Battery Priority switch is SW5. When you choose battery priority, the inverter will
inverting from battery despite the AC input. Only when the battery voltage is reaches low voltage alarm
point(10.5V for 12V), the inverter transfers to AC Input, charge battery, and switch back to battery when
battery is charged full. This function is mainly for wind/solar systems taking utility power as back up.
2.5.12 Other features
Battery voltage recovery start
After low battery voltage shut off (10V for 12V model/20V for 24V model/40V for 48V model), the inverter
is able to restore operation after the battery voltage recovers to 13Vdc/26Vdc/52Vdc (with power switch still
in the “On” position). This function helps to save the users extra labor to reactivate the inverter when the
low battery voltage returns to an acceptable range in the renewable energy systems.
The built in battery
charger will automatically reactivate as soon as city/generator ac has been stable for 15 seconds.
WARNING
Never leave the loads unattended, some loads (like a Heater) may cause accident in such cases.
It is better to shut everything down after low voltage trip than to leave your load on, due to the risk of fire.
Auto Generator Start (AGS)
The inverter can be customized to start up a generator when battery voltage goes low.
When the inverter goes to low battery alarm, it can send a signal to start a generator, and turn the generator
off after battery charging is finished.
