Alpha ESS PWG2-100K, User Manual, Page: 9 / 49

Warning

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.
Warning

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.
Attention

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
PCS
Solar
Array
A
B
C
N
PE
U
V
W
Essential
Loads
Grid
Max output
100000VA
N
PE
Neutral bar
MEN
connect
Earth bar
Essential Supply
Grid Supply
Earth
electrode
CT
Over current
protection
Fig.1-3 Connection diagram of the energy storing system
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