Ac Connection - Alpha ESS SMILE-B3-PLUS Installation Manual

MOUNTING
Connect the expanded battery to the ground point of SMILE-B3-PLUS with the grounding
cable.

7.4 AC Connection

7.4.1 Conditions for the AC Connection
AC breakers must be installed on the AC side of the SMILE-B3-PLUS to ensure that the
system can be safely disconnected from the power grid and the load.
DANGER
Danger to life due to fire!
You must protect each SMILE-B3-PLUS with an individual AC circuit breaker in or-der
to ensure that the system can be disconnected safely.
M5*10 Screw
M5
T20
2.5 N·M
M5*10 Screw
M5
T20
2.5 N·M
28 29
Do not connect loads between the SMILE-B3-PLUS and the grid breaker.
For load switching, please use dedicated circuit breakers with load switch function. The
selection of the AC circuit breaker rating depends on the wiring design (wire cross section
area), cable type, wiring method, ambient temperature, inverter current rating, etc.
Derating of the AC circuit breaker rating may be necessary due to self-heating or if
exposed to heat.
The maximum AC current of SMILE-B3-PLUS can be found in the following table.
We recommend the following AC circuit breaker for AC connection.
Description
Grid side
Backup side
7.4.2 Grid and Backup Connection
There are two AC terminal blocks for grid and backup connection which have the same
installation steps.
Following cable requirements for AC connection are recommended.
Copper conductor cross section area range
Stripping length of the insulated conductors
1. Take out the cord end terminals and remove AC connection cover from
SMILE-B3-PLUS.
2. Lead the AC cable through the cable gland of the AC connection cover, don' t tighten
the pressure cap of the cable gland.
Max Current
26A
13A
Description
Cable diameter
Grid
Installation method of AC cable via cable gland
Backup
MOUNTING
Recommend AC Circuit
Breaker Rating
40A
25A
Value
9-16 mm
4~6 mm
2
10~12 mm