Huawei SUN2000-17KTL - 5.4.2 Connecting RS485 Communications Cables

SUN2000 (8KTL-28KTL)
User Manual
5 Electrical Connections
Issue 12 (2019-06-30)
Copyright © Huawei Technologies Co., Ltd.
58
5.4.2 Connecting RS485 Communications Cables
Connect the SUN2000 to communications equipment (such as the data collector and PC)
using RS485 communications cables.
Context
A 24 AWG outdoor shielded network cable with the following specifications is recommended
for use as an RS485 communications cable:

With an internal resistance less than or equal to 1.5 ohms/10 m

With an outer diameter of 4.5-7.5 mm (8 core wires, each with a diameter of 1.00-1.07
mm)
A waterproof RJ45 connector has five parts: shielded plug, plastic housing, coupling nut, seal
ring, and sealing nut. See Figure 5-27.
Figure 5-27 Waterproof RJ45 connector composition
(1) Shielded plug
(2) Plastic housing
(3) Coupling nut
(4) Seal ring
(5) Sealing nut
When routing communications cables, ensure that they are separated from power cables and
away from interference sources to prevent communication interruptions.
Procedure
Step 1 Remove an appropriate length of the insulation layer from the shielded network cable using a
wire stripper.
A 24 AWG outdoor shielded network cable with the following specifications is recommended
for use as an RS485 communications cable:

With an internal resistance less than or equal to 1.5 ohms/10 m