Connecting Additional Grounding; Ac Connection - Alpha ESS SMILE-S6-HV Installation Manual

ELECTRICAL CONNECTION

7.3 Connecting Additional Grounding

An external grounding connection is provided at the left side of the inverter.
Prepare M5 OT terminals, strip the grounding cable insulation, insert the stripped part of
the grounding cable into the ring terminal lug and crimp using a crimping tool.
Connect the OT terminal with ground point using the torque is 2.5 Nm with T20
screwdriver.
Connect the ground points between the battery and the inverter to ensure that the
battery and the inverter have been grounded, as shown in the figure below.
a) SMILE-BAT-8.2PH (OUTDOOR)
b) SMILE-BAT-8.2PH (INDOOR)
M5*10 Screw (X4)
M5
T20
2.5 N·M
M5*10 Screw (×2)
M5
T20
2.5 N·M
38 39
c) SMILE-BAT-5PH (INDOOR)

7.4 AC Connection

7.4.1 Conditions for the AC Connection
AC breakers must be installed on the AC side of the inverter to ensure that the
inverters can be safely disconnected from the power grid and the load.
DANGER
Danger to life due to fire!
You must protect each inverter with an individual AC circuit breaker in order to ensure
that the inverter can be disconnected safely.
Do not connect loads between the inverter and the grid breaker.
No consumer load should be applied between the AC circuit breaker and the inverter.
Use a dedicated circuit breaker with load switch function for load switching.
The selection
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. Depending on site system configuration to select an appropriate AC
circuit breaker.
The maximum AC current of the inverters can be found in the following table.
Description
Grid side
Backup side
M5*10 Screw (X2)
M5
T20
2.5 N·M
of the AC circuit breaker rating depends on the wiring design (wire cross
Max Current
Inverter (indoor) Inverter (outdoor)
40A 52.2A
21.7A 26.1A
ELECTRICAL CONNECTION