VSMSQI has one analog group input which must be properly configured.
| Input | Description |
|---|---|
| U3P | Three-phase voltages |
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 |
|---|---|
| U3P connected to real measurements | The function requires that any two voltage channels are connected. |
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.