Installation Manual
18
5.2.5
Cable Trench Design
Cable entries are located on the bottom of the inverter. For ease of installation and
maintenance, it is recommended to route the cables connecting the inverter and external
devices in the cable trench.
Generally, cable trenches are dimensioned, designed and constructed by construction
party with device weight and dimensions considered.
Sound electrical connections among the cable trenches and between cable trenches and
grounding electrodes are required.
Cable trench section is shown below. The number of support arms can be determined
according to requirements. Communication cable, control cable, and power cable should
be routed separately; and DC loop and AC loop should be laid separately. This facilities
installation and maintenance, and reduces interference from power loop on communication
and control signals.
A
B
5.2.6
Ventilation Requirements
Massive heat is generated by the inverter during operation, and excessively high
temperature impairs electrical performance or even damages the device. Therefore, heat
dissipation should be taken into consideration during installation design.
Ventilation environment
The installation environment should meet the following ventilation requirements:
The inverter should be installed in well-ventilated place with large air volume.
The air inlets should be supplied with sufficient fresh air.
The air ducts should be cleaned regularly, to avoid blocking.
Ventilation device
To ensure efficient and reliable operation, the operating temperature needs to be controlled
with the permissible range. Therefore, adequate ventilation is required.
Exhaust heat goes out of the inverter from the top air ducts. Therefore, the
corresponding ventilation openings must be unblocked and clean.
When the inverter is exposed to sunlight, interior temperature rises rapidly and power
yield is reduced consequently. It is recommended to take shading measures or install
the inverter in places with shadings.
Directions of air outlets should be determined according to actual wind direction.
Item
Name
A
Cable trench
B
Cable support arms
