Transformer Diagram Models

Some transformer units include protective devices on either the primary side, secondary side, or both. A transformer may have a fuse in line with the primary winding, for example. If the customer is not implementing ADMS, the ArcFM UN recommendation is to map these attributes to the Asset Group Asset Type used when for a CSP type of Transformer; either RatedCurrent, MaxInterruptingAmps, or FuseLinkType. The transformer can be modeled as either in-line or tapped.

ADMS requires the fuse to be present for CSP Transformers. These fuses must be spatial. With this approach, a simple configuration technique can enable the GIS/ADMS integration infrastructure to map the GIS representation of a transformer with a contained fuse into the ADMS representation required to support the ADMS functions that depend upon the fuse data.

Distribution Transformer Diagrams (Unbalanced)

Three Phase Transformer with single, three-phase unit

Three Phase Transformer a single unit

Step Transformer Diagram

While distribution transformers mediate between the MV and LV voltage classes, step transformers mediate between two different VoltageGroup values that both lie within the range of the MV voltage class.

Unbalanced: Open Delta Transformer

CSP Transformer requirement in ADMS