Appendix-2 Product Life Curve Appendix-2 Product Life Curve Ambient temperature (˚C) 50 24-hour power supply/day 40 30 20 10 0 -10 1 2 3 4 5 6 7 8 9 10 Capacitor life (year) Note 1: Ambient temperature refers to the temperature measured at the location approximately 5 cm from the bottom center of the Inverter. (atmospheric temperature) It refers to the temperature inside if the Inverter is stored in an enclosure. Note 2: The smoothing capacitor, which will deteriorate because of the chemical reaction caused by the temperatures of the parts, should normally be replaced once every 10 years (which is the expected design life, and not guaranteed).
However, if the ambient temperature is high, or the Inverter is used with a current exceeding the rated current, for example, under overload conditions, its life will be significantly shortened. Appendix App-38