30
（
A
）
PV string
（
B
）
Inverter
（
C
）
Grid
（
D
）
Monitoring device
（
E
）
AC circuit breaker
table 5-1 Cable Requirements
No.
Cable
Type
Specification
Cable Diame-
ter(mm)
Cross-sectional Area
(mm
2
)
1
DC cable
PV cable comply-
ing with 1,500V
standard
4.7~6.4
4~6
2
External
grounding
cable
Outdoor single-
core copper wire
cable
/
The same as that of the PE
wire in the AC cable
3
AC cable
Four-core copper
or aluminum cable
*
Depends on
the size of
pipe conduit
L1,L2,L3 wire: 70~240
PE wire: refer to
4
Communi-
cation
cable
Shielded twisted
pair
4.5~18
1~1.5
* A copper to aluminum adapter terminal is required when an aluminum cable is used. For
details, refer to
table 5-2 PE wire requirements
PE wire cross
section
Note
S/2
(S: Phase wire
cross-section S)
The specifications are valid only when the phase wire and PE wire
use the same material. If otherwise, ensure that the cross section
of the PE wire produces a conductance equivalent to that of the
wire specified in the table.
User Manual
Содержание SG250HX-US
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