Feature to Spec Mapping Considerations

The Bank/Unit model pattern enables multiple options for configuring Feature to Spec Mappings.

• A Symmetrical model (where the Units contained in the same Bank have the same spec assignment) can accommodate both the Bank and Unit attributes.

  • The Bank’s layer is the target and the Bank’s attributes are set in “Feature Attributes.”

  • Meanwhile, the Unit’s attributes are set in the “Related Object Attributes.”

• An Asymmetrical model (where the Units contained in the same bank have different spec assignments due to differing attributes on the Units) is configured differently.

  • The Feature to Spec Mappings target the Object tables instead of the Device tables. This allows the “Spec Resolving” functionality to find and apply the specific Spec to the Unit.

  • Direct mappings to the Object tables do not require “Related Object Attributes.”

  • A matching Bank/Unit mapping (if it exists) would take precedence over the direct mapping to the Object table.

  • Matches can result in an “Asymmetrical Bank.”

    When the application detects an “Asymmetrical Bank,” the underlying attributes supporting the GRR note it as “Asymmetrical.”

Neutral ConductorInfo resources are not included in determining if the ConductorBank is Symmetrical. Keep reading the subsequent topics to learn more about handling neutrals.

Neutrals and Feature to Spec Mapping

As stated in the ArcFM Configuration for the Utility Network Whitepaper > Conductors section, ConductorInfo records must contain an ‘IsNeutral’ field in their schema. Use of this field is critical in differentiating whether the banked Unit is a Neutral or not, as this can change the behavior of the “Spec Resolving” functionality when it comes to determining a default spec for the Unit.

In short, the “IsNetural” field must be mapped in the Schema to ensure that GRRs created (especially in Designer XI) do not result in unexpected behavior.

When configuring the Feature to Spec Mappings for Neutrals, there are two possible configurations. We recommend you choose one configuration, and maintain a consistent modeling approach.

• Neutral Exists in the Edge Object Table

  • If you are tracking the Neutral information in the Edge Object table, you must map the spec directly to the attribute information of the Edge Object feature, with the layer name targeting the Edge Object layer.

• Neutral Information Exists Only on the Conductor Bank

  • If you are tracking the Neutral information directly on the Bank, you must instead create a mapping for the Bank and the target line layer through the Neutral spec mapping configuration.