2 Calibration

It is recommended to calibrate and verify each meter before delivery. The metrology library can be calibrated after it is configured correctly. The following figure illustrates the metrology firmware calibration flowchart:

Figure 2-1. Firmware Calibration Flowchart with Neutral Current

Since all DSP filters are mathematically correct, once the magnitude and phase have been properly calibrated, both active power and reactive power will be automatically correct.