Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
transformer
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: function-based → ≡
The transformer is defined by its identity-giving function of transforming electrical power from one circuit to another while maintaining frequency, using electromagnetic induction. The physical implementation can vary (dry vs oil-immersed, different winding configurations) but the defining characteristic is the electrical transformation function.
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 transforming electrical power from one voltage/current level to another while maintaining frequency through electromagnetic induction. This function already exists in the enriched classes for 'power transformer', so we reuse it.
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Expert review
2
Genus Proximus
✓ done
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:
Based on parent_candidates, the most specific appropriate superclass is ElectricalEquipment (from POSC Caesar). This is more specific than the ISO15926 'ELECTRIC TO ELECTRIC ENERGY CONVERTER' while still being a genuine superclass. Transformers are causally unified assemblies with physically connected parts (windings, core, casing) that can be disassembled for maintenance.
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Expert review
3
Differentia Specifica
✓ done
∃bearerOf.ElectricalPowerTransformationFunction ⊓ ∃hasComponentPartAtAllTimes.TransformerWinding ⊓ ∃hasComponentPartAtAllTimes.MagneticCore
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Conditions that distinguish
Transformer
from sibling classes under genus
Assembly.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The differentia specifies the unique electrical transformation function plus the essential physical components (windings and magnetic core) that enable electromagnetic induction, distinguishing transformers from other electrical equipment.
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Expert review
4
Necessary Parts
✓ done
no necessary parts
▼
Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
These are the minimal essential components required for any transformer to function: windings for electrical connection, magnetic core for field coupling, and casing for 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:
Transformers specifically work with alternating current, transforming voltage/current levels through electromagnetic induction while maintaining frequency constant.
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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
0 of 21 selected
▼
Select which CFIHOS/DEXPI properties inhere in every instance of Transformer as
bfo:Quality subclasses.
Each selected property →
:TransformerQuality ⊑ bfo:Quality, inheres in :Transformer
Custom axioms
none
▼
Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on 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
▼
Click "Detect divergences" to analyse cross-standard disagreements for this cluster.
