Operation and installation manual
Page 30 of 96
(PVI-STRINGCOMB (-S, -MC, -S-MC) - Rev:1.0)
6.3.4 Overvoltage protection - RS485
PVI-STRINGCOMB(-S) can feature an (optional) overvoltage protection on the
RS485 communication line (Figure 6-2 item F). The protection allows for quick
replacement of the faulty cartridges.
Presence of the ground cable connected to the relevant bar (Figure 6-1
item D) is necessary to ensure correct operation of this component.
6.3.5 DC isolating switch (Ref.§6.1 item G, Figure 6-1)
PVI-STRINGCOMB(-S) (only version –S) is fitted with a DC isolating switch in
class DC21A. The isolating switch fully disconnects the strings linked to box so as
to allow any required servicing of the devices downstream (e.g. inverter).
The isolating switch can be opened via remote control thanks to a disconnect
device provided as standard. The available status contact allows the system to
always be aware of the switch position.
Figure 6-6: DC isolating switch (1), component for remote disconnection
and auxiliary status contact (2).
(1)
(2)
