BATTERY BACK-UP ON-GRID
PV1
PV2
BMS
RS485
DRED
CAN
① DC Breaker
≥63A[1]
1. For batteries with attached breaker, the external DC breaker can be omitted.
2. Only for lithium batteries with BMS communication.
3. CT must not be connected in reverse. Please follow "House→Grid"
instructions for correct connection.
CT A
② AC Breaker
④ AC Breaker
To Smart Meter
Back-Up Loads
Battery
To Battery
Power Meter
③ AC Breaker
⑤ AC Breaker
2.8 Wiring Scheme for EM Series Hybrid Inverters
Note: This diagram illustrates the wiring scheme for the EM series hybrid inverter, not the
electrical wiring standard.
On-Grid Load
Smart Meter
PE
N
L3
L2
L1
Grid
PV Strings
Grid side
Please select a breaker according to the specifications below
① ② ③ ④
32A/400V AC breaker
32A/400V AC breaker
32A/400V AC breaker
⑤
63A/60V
DC Breaker
Depends on
household
loads
Inverter
GW3048-EM
GW3648-EM
GW5048-EM
Note: In accordance with Australian safety regulations, the neutral cables of the on-grid side and
the back-up side must be connected together, otherwise the back-up function will not work.
Note: The back-up PE line and earthing bar must be grounded properly and effectively.
Otherwise the back-up function may perform abnormally when the grid fails.
This diagram shows an example configuration for grid systems without special requirements
for electrical wiring connections.
This diagram shows an example application where neutral is connected to PE in the
distribution box.
Applies to: Australia, New Zealand, South Africa, etc. (Please follow local wiring regulations!)
System Connection Diagrams
Grounding screw hole
at the lower right corner
Do not connect this
terminal in Australian or
New Zealand grid systems!
Distribution box
Back-Up
L N PE
Meter
L
N
L
N
PE
L
N
PE
L
N
PE
E-N
Link
Smart
Meter
Grid
E-BAR
E-BAR
N-BAR
RS485
RCD
CT
Back-Up
Loads
On-Grid
RCD
Normal Loads
Battery
Hybrid Inverter
BMS
Solar
Array
On-Grid
Back-Up
Grounding screw hole
at the lower right corner
L
N
L
N
PE
E-BARE-BAR
RCD
CT
*
L N PE
L
N
PE
Grid
Distribution box
L
N
PE
Back-Up
Loads
Normal Loads
RCD
Battery
Hybrid Inverter
BMS
Solar
Array
Meter
Smart
Meter
RS485
20
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