Huawei Backup Box-B1 User Manual

7
If multiple inverters are connected in parallel, the connection of AC power cables L1, L2, and L3
on the power grid side of the Backup Boxes connected to each inverter must be the same.
Installing an Inverter AC Input Power Cable
3.5
X2
Connecting Grid AC Terminals
（
X2
）
No.
1
2
3
4
5
6
7
Three
-Phase
L1
L2
L3
N
-
PE
-
Connecting AC Input Terminals of the Inverter
（
X3
）
No.
1
2
3
4
5
6
7
8
9
10
11
Single
-Phase
-
L
-
-
-
N
-
-
-
PE
-
Connecting AC Input Terminals of the Inverter
（
X3
）
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Three
-Phase
L1
-
L2
-
L3
-
-
N
-
-
-
PE
-

Huawei Backup Box-B1 Specifications

General

Brand	Huawei
Model	Backup Box-B1
Category	Controller
Language	English