Class Description
Open-circuit test results verify winding turn ratios and phase shifts. They include induced voltage and phase shift measurements on open-circuit windings, with voltage applied to the energised end. For three-phase windings, the excitation can be a positive sequence (the default) or a zero sequence.
Attributes
| Name | Type | Description |
|---|---|---|
| energisedEndStep | Integer | Tap step number for the energised end of the test pair. |
| energisedEndVoltage | Voltage | Voltage applied to the winding (end) during test. |
| openEndStep | Integer | Tap step number for the open end of the test pair. |
| openEndVoltage | Voltage | Voltage measured at the open-circuited end, with the energised end set to rated voltage and all other ends open. |
| phaseShift | AngleDegrees | Phase shift measured at the open end with the energised end set to rated voltage and all other ends open. |
Relationships
Inherits from
Descendant classes
- No 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 |
|---|---|---|---|---|---|---|---|
| OpenCircuitTest | 0..* | TransformerEndInfo | 1 | EnergisedEndOpenCircuitTests | All open-circuit test measurements in which this transformer end was excited. | EnergisedEnd | Transformer end that current is applied to in this open-circuit test. |
| OpenCircuitTest | 0..* | TransformerEndInfo | 1 | OpenEndOpenCircuitTests | All open-circuit test measurements in which this transformer end was not excited. | OpenEnd | Transformer end measured for induced voltage and angle in this open-circuit test. |