Huawei Backup Box-B1 User Manual

9
No.
Label
Definition
Note
1
DI
Digital input signal+
Connects to the positive pole of the DI port and functions as
the port for the Backup Box to send feedback signals.
2
GND
GND
of the DI port
Connects to the
GND of the DI port.
Communications Terminal Definition
Installing Signal Cables
3.7
Neutral Wire Disconnected
If the neutral wire needs to be disconnected in off-grid mode (such as in German), according to
the local power grid standard, insert the short-circuiting plate between 10 and 11 of the AC
terminal X3 for the single-phase Backup Box. Insert the short-circuiting plate between 12 and
13 of the AC terminal X3 for the three-phase Backup Box.
Power grid AC terminal X2
(Single-Phase/Three-Phase)
Inverter AC terminal X3 (single-phase)
Inverter AC terminal X3 (three-phase)
Neutral Wire Connected
If the neutral wire cannot be disconnected from the power grid in off-grid mode (such as in
Australia), insert the short-circuiting plate between 4 and 5 of the AC terminal X2 according to
the local power grid standard.
•
When installing a short-circuiting plate, ensure that it is inserted into the correct port and
securely installed to avoid short circuits caused by incorrect installation.
•
If no short-circuiting plate is installed, the neutral wire will be suspended in off-grid mode,
but the off-grid/grid-tied switching function is not affected. You are advised to install a
short-circuiting plate according to the local power grid standard.

Huawei Backup Box-B1 Specifications

General

Brand	Huawei
Model	Backup Box-B1
Category	Controller
Language	English