Class Description
A conducting connection point of a power transformer. It corresponds to a physical transformer winding terminal. In earlier CIM versions, the TransformerWinding class served a similar purpose, but this class is more flexible because it associates to terminal but is not a specialization of ConductingEquipment.
Attributes
| Name | Type | Description |
|---|---|---|
| endNumber | Integer | Number for this transformer end, corresponding to the end’s order in the power transformer vector group or phase angle clock number. Highest voltage winding should be 1. Each end within a power transformer should have a unique subsequent end number. Note the transformer end number need not match the terminal sequence number. |
| grounded | Boolean | (for Yn and Zn connections) True if the neutral is solidly grounded. |
| rground | Resistance | (for Yn and Zn connections) Resistance part of neutral impedance where ‘grounded’ is true. |
| xground | Reactance | (for Yn and Zn connections) Reactive part of neutral impedance where ‘grounded’ is true. |
Relationships
Inherits from
Descendant classes
Leaf/Root class
| IsLeaf | IsRoot |
|---|---|
| False | False |
Associations
| Source Class | Cardinality Source | Target Class | Cardinality Target | Source Name | Source Assoc. Description | Target Name | Target Assoc. Description |
|---|---|---|---|---|---|---|---|
| TransformerEnd | 0..* | Terminal | 0..1 | TransformerEnd | All transformer ends connected at this terminal. | Terminal | Terminal of the power transformer to which this transformer end belongs. |
| TransformerEnd | 0..* | BaseVoltage | 0..1 | TransformerEnds | Transformer ends at the base voltage. This is essential for PU calculation. | BaseVoltage | Base voltage of the transformer end. This is essential for PU calculation. |
| TransformerEnd | 1 | RatioTapChanger | 0..1 | TransformerEnd | Transformer end to which this ratio tap changer belongs. | RatioTapChanger | Ratio tap changer associated with this transformer end. |