Electrical Connection; Input Requirement; Output Reqirement; Wiring Mode - Alpha ESS PWG2-50K User Manual

4.6 Electrical connection

Input requirement

4.6.1
DC voltage of Bi-directional Hybrid Storage Inverter should be within the input scope, or the Bi-directional Hybrid
Storage Inverter will be unable to operate. When configuring serial quantity of batteries, the maximum charging
voltage and minimum discharging voltage should be fully considered. For details, please consult our technical
personnel.
Every DC input circuit branch in Bi-directional Hybrid Storage Inverter should be able to operate independently. It does not
support common battery pack. The batteries need to be connected to each branch port.

Output reqirement

4.6.2
The output of Bi-directional Hybrid Storage Inverter is 3-phase and 4-wire. When designing energy storing system,
the Bi-directional Hybrid Storage Inverter has been equipped with an isolation transformer, the voltage of its output
side can directly be connected to the low-voltage power grid.

Wiring mode

4.6.3
The Bi-directional Hybrid Storage Inverter adopts the wiring mode of lower inlet and outlet. The cables fall into the
cable trough via the wire holes at the base. Open the front door and dismantle the internal door to display wiring
the cooper bars. Refer to Fig.4-9 and Fig. 4-10 for main view of cabinet's front door. As for wiring requirements,
single cables or multiple cables with proper wire diameter should be selected. It is suggested that the current in
1mm wire should be ≤3A.
2
1
2
3
4
5
Attention
Position
1
2
8
3
7
6
4
9
5
Chapter IV Device Installation 13
Description
PV DC input
positive pole
PV DC input
negative pole
Battery input
positive pole
Battery input
negative pole
PE