CCSPVC has two analog group inputs which must be properly configured.
| Input | Description |
|---|---|
| I3P | Three-phase currents |
| IRES | Residual current (measured) |
Note: See the preprocessing function blocks in this document for the possible signal sources.
There are a few special conditions which must be noted with the configuration.
| Condition | Description |
|---|---|
| IRES measured | In case IRES needs to be derived, the function requires that all CT cores, except for the one used for phase current measurement, must be used and summed externally. |
Improper analog channel configuration causes a validation error if the analog channels are not completely configured or they do not match with certain settings. For troubleshooting, check the contents of this chapter and also the preprocessing blocks in this document. The configuration can be written to the protection relay once the mismatch is corrected.