2-1 Installation „ Installation Environment •Increased ambient temperatures will shorten the life of the Inverter. •Keep the Inverter away from heating elements (such as a braking resistor, DC reactor, etc.). If the Inverter is installed in an enclosure, keep the ambient temperature within the range of the specifications, taking dimensions and ventilation into consideration. 2 Airflow Save enough space to prevent the upper and lower wiring ducts from blocking cooling airflow. Design *1 Inverter 5 cm min. 5 cm min. *1 10 cm min. *2 10 cm min. Note that replacing the smoothing capacitor requires 22 cm or more.
Wall *2 •When several 3G3RX models are installed in an enclosure and a ventilation fan is mounted in the enclosure, be careful about the layout of the Inverters and the air intake apertures. Depending on the internal layout of the panel, the Inverter's cooling effect may deteriorate, resulting in an increase in ambient temperature. Also, use thorough caution in making sure that the Inverter's ambient temperature is within the allowable operating temperature range. Ventilation fan Ventilation fan Inverter Inverter (Correct example) (Incorrect example) •Before installing the Inverter, place a cover over all the ventilation openings to shield them from foreign objects.
After completing the installation process, be sure to remove the covers from the Inverter before operation. •Below is the heat radiation according to the Inverter capacity. 2-3 Inverter Inverter capacity (kw) 5.5 7.5 11 15 18.5 22 30 37 45 55 Load with 70% loss (W) 242 312 435 575 698 820 1100 1345 1625 1975 Load with 100% loss (W) 325 425 600 800 975 1150 1550 1900 2300 2800 Efficiency at rated output (%) 94.4 94.6 94.8 94.9 95.0 95.0 95.0 95.1 95.1 95.1