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step 3
Apply paint to the grounding terminal to ensure corrosion resistance.
-- -- E
En
nd
d
5.4
AC Cable Connection
5.4.1 AC Side Requirements
Connect the inverter to the grid only after getting an approval from the local
electric power company.
Before connecting the inverter to the grid, ensure the grid voltage and frequency
comply with requirements, for which, refer to
. Otherwise, contact
the electric power company for help.
A
AC
C C
Ciirrc
cu
uiitt B
Brre
ea
akke
err
An independent three or four-pole circuit breaker is installed on the output side of the
inverter to ensure safe disconnection from the grid.
IIn
nvve
errtte
err M
Mo
od
de
ell
R
Re
ec
co
om
mm
me
en
nd
de
ed
d A
AC
C c
ciirrc
cu
uiitt b
brre
ea
akke
err c
cu
urrrre
en
ntt
SG5KTL-MT
16A
SG6KTL-MT
SG8KTL-M
20A
SG10KTL-M
25A
SG12KTL-M
32A
•
Multiple inverters cannot share one circuit breaker.
•
Never connect a load between the inverter and the circuit breaker.
R
Re
essiid
du
ua
all C
Cu
urrrre
en
ntt M
Mo
on
niitto
orriin
ng
g D
De
evviic
ce
e
With an integrated universal current-sensitive residual current monitoring unit inside, the
inverter will disconnect immediately from the mains power once a fault current with a
value exceeding the limit is detected.
However if an external residual current device (RCD) is mandatory, the switch must be
triggered at a residual current of 300 mA or higher.
M
Mu
ullttiip
plle
e IIn
nvve
errtte
errss iin
n p
pa
arra
alllle
ell C
Co
on
nn
ne
ec
cttiio
on
n
If multiple inverters are connected in parallel to the grid, ensure that the total number of
parallel inverters does not exceed 10. Otherwise, please contact SUNGROW for
technical scheme.
C
Ca
ab
blle
e R
Re
eq
qu
uiirre
em
me
en
nttss
Cross-section: 4~10 mm
²
, cable diameter: 12 mm to 25 mm
User Manual