Raw voltage, current, and power signals applied to a PQ recorder are often scaled versions of the true data under question. Transducers such as PTs and CTs step the voltage or current down to manageable levels. These transducers may themselves have individual calibration correction factors. Per-unit analysis involves manually scaling to a nominal reference level. Scale factors may even be able to correct for backwards CTs or other situations where a 180 degree phase shift is required. The many uses for scale factors are described here, along with the mechanism for applying them in ProVision.
This white paper includes: