Chapter 3 Mechanical and Electrical Installation
ACH200 Series High Voltage Variable Frequency Speed Control System Operating Manual
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Back
door
Front
door
More than 1800
Back door
wa ll
Figure.3-2
b) Advantages of adding air ducts
Low cost, high reliability and good heat dissipation. Suitable for applications where the site
environment is relatively clean.
Note:
◆
In the process of use, if the top fan of the AC drive cabinet is closer to the air outlet (less than 10
meters, no turn in the middle), the air outlet cannot be installed with an auxiliary exhaust fan,
otherwise it is necessary to install an additional exhaust fan. If the site construction of the air inlet
is inconvenient and the air duct needs to have a twist, then you can consider adding a fan to force
the air in.
◆
If the duct design is unreasonable, rainwater will back up on rainy days and cause the AC drive
to short circuit. The overall ventilation network should be designed to slope downwards at a certain
angle and holes should be opened on the lower side of the ventilation network to prevent rainwater
from backing up. Ventilation holes with filters to prevent animals from crawling in and to filter dust.
3) Air - water cooling solutions
a) Air - water cooling principle
The hot air of the AC drive is directly exchanged by the air-cooling device through the duct,
and the cooling water takes away the heat emitted by the AC drive, and the cooled air is directly
discharged back to the room after cooling. The temperature of the cooling water inside the air-
cooling unit is lower than 33°C, i.e. it can ensure that the ambient temperature inside the AC drive
room is controlled below 40°C after the hot air has passed through the heat sink, which meets the
requirements of the AC drive for environmental operation, thus ensuring a good operating