INSTALLATION, USE AND
MAINTENANCE
SUNWAY STRING BOX
LT 1500V 24 INPUTS
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name.
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11.6.1. DC Connection
– String Cables
Note
Use PV copper cables only.
Note
String cables must be connected directly onto the fuse-holders.
Cross section [mm
2
]
Cable diameter [mm]
4-10
5-10
Fuse-holder
Cable stripping (mm)
Torque [Nm]
Mersen (estrattore nero)
9.5
2
EATON/Bussman (estrattore blu)
9.5
3.2
Faultrap
9.5
2.5
SEPV
9.5
2-2.5
Warning
To get even temperature inside the string box components, use string inputs as
per the table below.
Table 12: Inputs to be used based on the string current
Max. input current I
SC
@
ambient 45 °C (A)
Max. input current I
SC
@ ambient 35 °C (A)
Number of connected
strings
Inputs to be not
used
Up to 11.7
Up to 14.7
21-24
No requirement
From 11.7 to 13.5
From 14.75 to 16.9
18-20
5, 10, 15, 20
From 13.5 to 16.7
From 16.9 to 18.4
15-17
4, 7, 10, 13, 16, 19
e 22
From 16.7 to 19.6
18.4 to 24.5
13-15
3, 6, 9, 12, 15, 17,
19, 21 e 23
From 19.6 to 22
From 24.5 to 27.5
12
2,4,6,8,10,12,14,16,
18, 20, 22 e 24
