Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
power transformer
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: function-based → ≡
The concept is defined primarily by its identity-giving function: electromagnetic voltage/current transformation for power transmission. While it has a specific physical mechanism (electromagnetic induction), the functional aspect (transforming electrical power at different voltage levels) is what distinguishes it from other electrical equipment.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
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Disjoint with
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Expert review
Axiomatization steps
1
Identity-Giving Function
✓ done
⚠ not anchored
ElectricalPowerTransformationFunction → ElectricalPowerTransformationProcess
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COPI-Core operation
⚠ Process parent
PlannedProcess reaches no COPI-Core operation, and no gap (out of scope / coverage gap) is recorded.
LLM rationale:
The identity-giving function is the electromagnetic transformation of alternating voltage and current systems to different values at the same frequency for power transmission. This is what makes a power transformer distinct from other electrical equipment like motors, generators, or measuring transformers.
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Expert review
2
Genus Proximus
✓ done
Transformer · Assembly
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Genus (genus proximum)
Most specific superclass — may be a domain class like "Valve" or an IOF-Core root.
BFO/IOF-Core Root
bfo:Object branch
bfo:ObjectAggregate branch
bfo:ImmaterialEntity branch
LLM rationale:
From parent_candidates, 'TRANSFORMER' is the most specific superclass. Power transformer is a subtype of the broader transformer category. Transformers are Assemblies because they have multiple physically connected components (windings, core, housing, cooling systems) that work together as a causally unified object for maintenance and operation.
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Expert review
3
Differentia Specifica
✓ done
∃bearerOf.ElectricalPowerTransmissionRole ⊓ ∃hasInput.AlternatingCurrentPortion ⊓ ∃hasOutput.AlternatingCurrentPortion
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Conditions that distinguish
Power Transformer
from sibling classes under genus
Transformer.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The differentia focuses on the power transmission role that distinguishes power transformers from other transformer types. The specific mention of 'transmitting electrical power' in both definitions indicates this is the key distinguishing characteristic.
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Expert review
4
Necessary Parts
✓ done
no necessary parts
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Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
Power transformers require specialized windings rated for power transmission currents/voltages, plus standard transformer components for electromagnetic function and physical protection.
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Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
∅ → ∅
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Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
Power transformers transform AC electrical energy from one voltage/current level to another while maintaining power (minus losses) and frequency, specifically for power transmission applications.
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Expert review
More
Alternative labels
none
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Synonyms / alternative labels (comma-separated) — skos:altLabel
Language auto-detected on export (PT if the label contains accents, EN otherwise).
Properties as BFO qualities
no CFIHOS/DEXPI properties
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No CFIHOS/DEXPI properties found for this cluster.
Custom axioms
none
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Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Power Transformer.
Write the restriction block in Turtle syntax (without the leading
rdfs:subClassOf).
Example: [ owl:onProperty :hasPart ; owl:someValuesFrom :Wellhead ]
Cross-standard divergences
none detected yet
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Click "Detect divergences" to analyse cross-standard disagreements for this cluster.
