Operation Model - Alpha ESS PWG2-50K User Manual

The frame of photovoltaic array should be ground connection to make sure the safety of operating personnel.

When the photovoltaic array is exposed to light, it supplies a DC voltage to the PCS.

To be in compliance EN61000-3-11, the product shall be connected only to a supply of the system impedance: ∣Zsys∣

=0.191 ohms or less. Before connect the product to public power network, please consult your local power supply
authority to ensure the power network meet above requirement.
Ensure all wiring is correctly selected and erected in accordance with AS 3000 wiring regulation.

Make sure the neutral conductor of the Grid and load via stand-alone port shall not interrupt.

Make sure the neutral conductor of the Grid and load shall be bonding to earth via earth bar.

Battery
Bank
Solar
Array

1.4 Operation model

The Bi-directional Hybrid Storage inverter can operate in on-grid model and off-grid model. When the inverter
works in on-grid model, it can trace the amplitude and phase of grid voltage faultlessly. And if the DC source is
A
B
C
N
PE
PCS
Essential Supply
U
V
W
N
PE
Grid Supply
Fig.1-3 Connection diagram of the energy storing system
Warning
Warning
Attention
Neutral bar
MEN
Over current
connect
protection
Earth bar
CT
Essential
Loads
Max output
100000VA
Earth
electrode
Grid