POWER SAVING EFFECT DISPLAY DEVICE IN AN INVERTER DEVICE

摘要

Monitoring and sampling are performed by using an inverter device itself and an error is minimized even when a change by environment and a change with time are generated in an object facility or when the inverter device load fluctuation has occurred. For this, there are provided power consumption calculation means (51) for calculating power consumption according to the voltage and current of output voltage calculation means (42) and current detection means (21) and power saving effect generation means (52) for calculating the power saving effect according to the power consumption. From the instantaneous power consumption during inverter operation calculated by the power consumption calculation means (51) and power characteristic data as compared to commercial operation, it is possible to display an instantaneous power saving effect during inverter operation with respect to the commercial operation and an accumulated value of the power saving effect on a display device (70).