The residual current preprocessing function RESTCTR is used for setting up the residual current measurement channels. Input channels for RESTCTR are from physical hardware. The output IRES_MEAS channel of RESTCTR can be connected to different applications which require measured residual current.
The residual CTs' primary rated current can be set using Primary current setting. The setting Secondary current defines the nominal current of the CT's secondary winding. This is used as a reference to scale measurements accordingly.
Residual current magnitude correction of an external CT can be made using the Amplitude Corr setting.
Residual current angle correction of an external CT can be made using the Angle correction setting.
The Reverse polarity setting is used to reverse the polarity of the residual CT.