Design Guide | iC7 Series Liquid-cooled System Modules
The door or bottom part of the enclosure must have air gaps for air intake, and outlet air gaps at the top. The inlet and outlet air gaps
must obey the requirements set by the selected protection rating. The structure in the enclosure must move the hot air to the outlet at
the top of the enclosure. The structure must also make sure that the hot air goes out of the enclosure and does not come back in.
Monitor the air cooling capability inside the enclosure. The system modules only monitor the temperature of the modules and filters.
Ensure sufficient air flow through the critical areas. Critical areas for air-cooling are:
l DC and AC fuses
l Terminals
l Busbars
l Power cables
l Electrical components
Considerations for directing the air flow:
l Block the gaps and empty space between the side wall of the enclosure and the system modules to direct air flow to the areas that
need cooling.
l If the adjacent enclosure section has lower air pressure, there must be a wall between the sections to prevent air from escaping into
the adjacent section.
l An air deflector is recommended above the DC fuses to force the air to flush the fuses.
l The airflow rate must be more than 2 m/s when the temperature inside the enclosure is +40...+60 °C (+104...+140 °F).
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