Sungrow SG33CX User manual

User Manual
PV Grid-Connected Inverter

II
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5 min
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A B C D
E

L2
PEN
L1
L3
TN-C
Transformer Transformer
L2
N
PE
L1
L3
TN-C-S
Inverter
L2
N
L1
L3
TT
Transformer
L2
N
PE
L1
L3
TN-S
Transformer
L2
L1
L3
IT
Transformer
L1 L2 L3 N PE
Inverter
L1 L2 L3 N PE
Inverter
L1 L2 L3 N PE
Inverter
L1 L2 L3 N PE
Inverter
L1 L2 L3 N PE
SG 33 CX
Code of Product Series
Code Of power level
Photovoltaic grid-connected inverter
，

1
2
4
6
7
8
3
5

Depth
Height
Width
× ×
× ×
.
.

(SG40CX)(SG50CX)
L1
PE
L2
L3
AC SPD
DC1
DC switch DC Bus Inverter Circuit
(DC/AC)
AC
Relays
DCn
Current
Monitoring
MPPT
(Boost 1)
DC EMI
Filter
DC SPD
N
*SG33/40/50CX: n= 3/4/5
MPPT
(Boost 2 )
AC
Filter
AC EMI
Filter

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PV array
Rise the to-ground electromotive force
at the negative pole of the PV array
Inverter Transformer Grid
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