21
Figure 5-9 Schematic diagram of inverter external duct
Specific requirements for adding air ducts to inverters are as follows:
Requirements do not reduce cabinet ventilation by adding ducts
The interface between air duct and inverter cabinet is well sealed.
The outlet of the duct should be inclined downward (rainproof)
Protection should be added to the outlet of the air duct (rodent and bird control, etc.)
The air required by the inverter is inhaled through the bottom vent and the dust net of the
front door. Hot air is discharged through the top vent of the inverter, and there is an outlet
at the top. The sketch maps of the top section outlets of each type of this inverter are
shown in the following figures (mm).
Figure 5-1030kW/50Kw/100KW Vent Size
Fig. 5-11 250kW Vent Size
