Electrical Connection
16
ESS Inverter User Manual
Ensure that inverter and all cables to be installed are completely powered
off during whole installation and connection. Otherwise, fatal injury can
occur due to the high voltage.
DANGER
4. Electrical Connection
This chapter shows the details connection of ESS inverter. And PV connection is N/A for
AC couple
inverters. The following illustration only uses the hybrid inverters as an example.
ESS inverter system connection diagram:
Non-parallel connection mode
①
CT/Meter communication connection
②
BMS communication connection
③
GEN DRY communication connection
Note
1.
PV related contents are N/A for AC Couple inverter.
2.
BMS connection is only for lithium battery.
3.
Meter is optional.
4.
About breakers:
DC breaker on BATTERY side: 150A
AC breakers on Critical load side and Smart load side ≥50A
AC breaker on Inverter load side ≥50A
Normal Load
Critical Load
PV Array
PE
Flow from grid
to inverter
PE
PE
①
N
②
③
L
Main
Breaker
Lithium battery/
lead-acid battery
CT
or
Meter
Grid
PE
4
25
24
2
N
3
1
L
DDSU666
5 (80)A
Main
Breaker
Grid
PE
③
①
②
On-Grid
Inverter
or
Smart
Load
or
Generator
1
2
3
4
5
6
7
8
9
5
6
2
4
25