Feeder Source Information
Each Geodatabase Region (GRR) includes a drop-down displaying Feeder Source Information.
When there is only one feeder (or circuit) source, the drop-down looks like the following image:
The drop-down includes the following:
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Subnetwork name of the polygon that has a containment association with the circuit source. In other words, the name of the substation polygon that contains the circuit breaker.
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Operating voltage of the circuit source.
If the subnetwork is energized by a different, upstream subnetwork (for example, a low-voltage network being fed by a medium-voltage network), the drop-down looks like the following image:
The drop-down includes the following:
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Subnetwork name of the polygon that has a containment association with the circuit source.
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Operating voltage of the circuit source.
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Name of the upstream circuit that feeds the downstream circuit.
Configuration Expectations
For the drop-down to display relevant information, the application expects one of the two following configurations within ArcGIS Pro:
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The substation polygon contains the substation circuit breaker. More specifically, this means in the Substation > Containment Association dialog, it needs a “Contains” relationship with the circuit source feature. Or:
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The substation polygon contains the assembly, which further contains the substation circuit breaker. This means that in the Substation > Containment Association dialog, it needs a “Contains” relationship with the assembly, and in the Assembly > Containment Association dialog, it needs a “Contains” relationship with the circuit source feature.
If one of these two rules are not met, the application cannot find the subnetwork name of the substation polygon. In this case, it displays “Unknown” for the substation. This is a flag for you to investigate the expected substation and see if it is missing its containment associations. Further, nesting of assemblies is not allowed.