User manual

Figure 7 – CT Installation Do’s and Don’ts (from DWG1469R1.0)
2.9 AC Current and Voltage Calibration
Each GSC400 undergoes an advanced two point calibration at the factory and
typically does not required calibration except in the following instances:
1. Current Transformers (CT) are used that have poor tolerances.
2. The AC signal from the generator is distorted with a high total harmonic
distortion (THD). One cause is VFD (Variable Frequency Drive) devices.
DynaGen has a software utility that can perform a basic calibration of the current
and voltage.