Automatic Startup; Startup And Shutdown; Check Before Startup - Alpha ESS PWG2-50K User Manual

The device receives shutdown command.
Shutdown

Automatic startup

5.1.1
In automatic startup, the Bi-directional Hybrid Storage Inverter system will automatically inspect and judge startup
conditions. If the system function is normal and it meets the system setting conditions, it will start automatically. If
the voltage of power grid is too low or high, the frequency is abnormal, DC voltage is too low or high, the
Bi-directional Hybrid Storage Inverter will make an alarm, shut down automatically and stop providing power
outside.
After meeting the following conditions, the Bi-directional Hybrid Storage Inverter will restart automatically, and the
output is recovered.
DC voltage is normal.

The voltage of power grid is normal in on-grid mode, or there is no voltage of power grid in off-grid

mode.
Operation mode setting is correct.

There is no other alarm fault.

If automatic startup is not set in Bi-directional Hybrid Storage Inverter, users can start the device by hands through
touch panel.

5.2 Startup and shutdown

Bi-directional Hybrid Storage Inverter must be installed completely and commissioned by engineers. External power
switches have been closed, and then startup steps can be conducted.

Check before startup

5.2.1
Before startup, check the device according to the following steps:
1) Visually inspect and ensure that no damage sign is in external part of the module, and DC and AC breakers are at
"OFF" position.
2) Complete installation according to Chapter IV, and check whether DC input wiring and AC output wiring in
Bi-directional Hybrid Storage Inverter are normal, and the grounding is good.
3) Check whether battery voltage is normal.
4) Check whether phase voltage and wire voltage in power grid side are in the normal range, and record the voltage.
Chapter V Commissioning and Operation 19
module red light is always on or flickers, and
the buzzer makes an alarm.
green light flickers slowly, and the
RUN
module green light flickers slowly.