Sungrow SunBox PVS-8M, Руководство пользователя

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4 Installation Guide User Manual
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
Make sure that the nuts have been screwed into place. If the cable
conductor has not been connected firmly, long-time work may burn the
terminal. Stranded flame-retarded copper wire shall be used, and its size
shall be over the recommended value as described in 8.1.2.

Nuts of water-proof terminals must be screwed correctly and firmly.
Otherwise, water leakage can damage the PVS.
4.3.6 Ground wiring and connections
Ground cables shall be connected correctly and firmly. Otherwise:

The electric shock caused by a malfunction can lead to lethal damage.

The device can be damaged when lightning.

Relevant standards must be observed.

Ground cables must be connected firmly with both device and ground
terminals.

Ground resistance shall be measured after finishing ground connections,
and the measured values should not be over 1Ω.
Step 1 Loosen the union nuts of “ ” water-proof terminals.
Step 2 Insert the green-yellow wire from the device outside into the “ ”
water-proof terminal, then pull the wire and connect it to the inner terminal.
Enough wire bending space should be ensured.
Step 3
Strip off both protection and insulation layers, with approx. 12mm conductor
length.
Step 4 Loosen the tightening bolt of “ ” terminal with the help of a screwdriver.
Step 5 Insert ground cable through the opening and screw the tightening bolts
tightly. Firm the cable onto the cable support bar and enough cable bending
space shall be ensured.
Step 6
Tighten the nuts of water-proof terminal clockwise. Ground wirings have
been finished.
4.3.7 Communication Connections
Refer to the figure below for communication terminals inside the combiner box.