7
No.
Item
Type
Specifications
Description
4
RS485
communication
s cable
Outdoor shielded
twisted pair cable
•
Conductor cross-
sectional area: 0.25–1
mm
2
•
Cable outer diameter:
4–11 mm
When three
communications cables
connect to the signal
cable connector, the
outer diameter of the
cables should be 4–8
mm.
5
(Optional)
Power cable of
the tracking
system
Three-core outdoor
copper cable with
dual-layer
protection
•
Conductor cross-
sectional area: 10
mm
2
•
Cable outer diameter:
15–18 mm
-
Note [1]: The value is valid only if the conductors of the PE cable and AC power cable use the
same material. If the materials are different, ensure that the conductor cross-sectional area of the
PE cable produces a conductance equivalent to that of the area S/2. The specifications of the PE
cable are subject to this table or calculated according to IEC 60364-5-54.
Note [2]: You are advised to use a soft cable to prevent poor terminal contact due to the bending
stress of the cable.
Note [3]: For some models, the outer diameter of a single-core cable ranges from 14 mm to 36
mm based on the label in the maintenance compartment.
Installing the PE Cable
4.2
•
It is recommended that the PE cable
be connected to a nearby PE point.
Connect the PE points of all
SUN2000s in the same PV array to
ensure equipotential connections to
PE cables.
•
To enhance the corrosion resistance
of a ground terminal, you are advised
to apply silica gel or paint on it after
connecting the PE cable.
