10
SUNSYS FJB
- Ref.: IOMSUNIFXX01-GB 00
10
4.4. DC STRINGS CONNECTION
Type of cable: cables with double insulation for photovoltaic
applications.
Cross-section Cu: 4 to 6 mm²
Cable glands: ISO 16 (max)
Tightening torque of the fuse disconnectors: 2 to 2.5 Nm
4. ELECTRICAL REQUIREMENTS
4.4-2
Bottom view
Outgoing gland plate
Strings incoming gland plate
POSITIVE PO
NEGATIVE POLARITY -
4.5. INSTALLING THE FUSES
• Use only gPV fuses certifi ed for photovoltaic applications.
• Type de fuses: PV 10 x 38 gPV 1000V (compliance with IEC
60269-6)
• ISC STC max/string: 10 A
• PV module peak power current IMPP/string: 9 A
• The rated current of the fuses must be calculated for each plant
separately (See maximum rated current ISC STC and Impp
STC values per string in the Technical Characteristics chapter).
• The fuse-holder terminals where the strings cables are
connected are always live even if the fuse holder is open.
• Before inserting the fuses of the strings, check the correct polarity of the inputs and check if there is no earth fault.
• Install/remove the fuses only after having disconnected the load (by opening the DC switch-disconnector) and using the appro-
priate personal protective equipment.
4.4-1
4.5-1
