Lightway LW6M60-260, Руководство по установке, Страница: 9 / 37

Lightway PV Modules, Installation Manual, Page 8 /36
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Electrical installation
⊙
While connected in parallel,the output current is equal to the sum of current of each string. Use a Fuse in each
string of module; Please refer to the application requirements locally. Recommended maximum parallel module
configurations: Fuse rating/(Isc*1.25).
Always use the same type of module in a PV system. While connected in series, voltage of each string should
below maximum system voltage. Recommended maximum series module configurations
：
1500V/(1.25*Voc) .
The cross section area of cable and the capacity of connector must be selected to suit the maximum system short
circuit current
（
Recommended cross section area of cable is 4mm
²
for a single module and rated current of a
connector is larger than 10A
）
,otherwise the cable and connector will be overheated under large current. Please
pay attention
：
the temperature limit of cable is 85
℃
).
⊙
Functional earth the negative pole of the system will prevent the PID effect from happening. However, the
earthing application need the galvanic isolation between the DC and the AC. This is normal realized by using a
isolation transformer.
Grounding
⊙
All module frames and mounting racks must be properly grounded in accordance with local and national
electrical codes. The frame rails have pre-drilled holes marked with a grounding sign. These holes should be used
for grounding purposes and must not be used for mounting the PV modules. Do not drill additional holes into the
frame .The following grounding methods are available:
⊙
A grounding screw assembly must be attached at a designated grounding holes location using only stainless
steel hardware. Insert a M5 stainless steel screw first through spring washer, cup washer with a copper wire, flat
washer, star washer, and then through the grounding hole on the frame, flat washer, spring washer, at last tighten
them with the M5 nut.