Appendix-2 Product Life Curve Appendix-2 Product Life Curve Life of the Inverter smoothing capacitor Ambient temperature refers to the surrounding temperature of the Inverter. The following diagram shows the product life curve. The smoothing capacitor, which will waste due to the chemical reaction caused by parts tempera- tures, should normally be replaced once every 5 years. However, if the ambient temperature is high, or the Inverter is used with a current exceeding the rated current, for example, under overload con- ditions, its life will be significantly shortened. Note:
Ambient temperature refers to the surrounding (atmospheric) temperature of the Inverter, or the temperature inside if the Inverter is encased or installed in an enclosure. Appendix App-17 Ambient temperature 50 (°C) 12-hour operation/day 40 30 20 10 24-hour operation/day 0 -10 1 2 3 4 5 6 7 8 9 10 Capacitor life (year) 12-hour operation/day 24-hour operation/day 24-hour operation/day