Sungrow PVS-12MH-DB, Руководство пользователя

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5 Electrical Installation User Manual
16
No. Description
D Ground copper bar
E Output of DC negative pole
F Output of DC positive pole
G DC switch
H Power supply board
I Indicator(for more details, please refer to the Tab 8-1)
J LED display
K Push switch
L SPD (Surge protection device)
Fuse
A PV special fuse is set for each string as the upstream protection device of the
whole PV power generation system. Measure the voltage between the positive
and negative polarity of each input before inserting the PVS fuse to make sure
the voltage is within the range of 0
– 1500Vdc. Make sure no PV module string
is connected reversely.
The monitoring board
The monitoring board monitors the current of each string. The monitored
current value is sent to the PC through RS485. The PC can judge if a fault is
occurred to the module through the set value.
SPD(Surge Protection Device)
A SPD is quipped inside the PVS to prevent the transient overvoltage caused
by lightning. The SPD failure signal can be sent to the PC through the RS485.
Grounding
It must be grounded properly for overvoltage protection. The PVS provides a
ground terminal for grounding connection.
5.2 Water-proof terminals
Water-proof terminals of PVS are shown as followings.