exported
necessary
power transformer secondary winding
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Powertransformersecondarywinding
Generated on 2026-05-04
Natural Language Definition
EN
A FiatObjectPart that is the secondary winding of a power transformer and that bears a SecondaryWindingFunction consisting in delivering transformed electrical power at the output voltage level.
PT-BR
Uma FiatObjectPart que é o enrolamento secundário de um transformador de potência e que possui uma SecondaryWindingFunction consistindo em fornecer energia elétrica transformada no nível de tensão de saída.
Formal Axioms
Semi-formal (Aristotelian)
PowerTransformerSecondaryWinding SubClassOf FiatObjectPart and (partOf some PowerTransformer) and (hasFunction some SecondaryWindingFunction)
First-Order Logic Theory
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▸ Stored override
∀x(PowerTransformerSecondaryWinding(x) → FiatObjectPart(x) ∧ ∃y(PowerTransformer(y) ∧ partOf(x,y)) ∧ ∃f(SecondaryWindingFunction(f) ∧ hasFunction(x,f)))
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix : <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix bfo: <http://purl.obolibrary.org/obo/> .
@prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> .
@prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix apv: <http://inf.ufrgs.br/ontologies/apv#> .
### COPI — Core Ontology for Petroleum Installations
### Class module: PowerTransformerSecondaryWinding
<https://www.inf.ufrgs.br/ontologies/copi>
rdf:type owl:Ontology ;
dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ;
dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ;
dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ;
skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ;
skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ;
skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ;
skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ;
owl:versionInfo "1.1.0" ;
owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ;
owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ;
dcterms:creator "Nicolau Oyhenard dos Santos"@en ;
dcterms:contributor "Cauã Antunes" ;
dcterms:contributor "Haroldo Rojas" ;
dcterms:contributor "Rafael Petry" ;
dcterms:contributor "Régis Romeu" ;
dcterms:contributor "Mara Abel" ;
dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ;
dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ;
dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
dcterms:created "2026-04-08"^^xsd:date ;
dcterms:modified "2026-10-08"^^xsd:date ;
apv:GlobalMinLanguageCoverage "en pt-br" ;
apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ;
apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" .
iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ;
apv:MinAnnotationLength 20 .
### Identity-giving function
:COPI_0000199 rdf:type owl:Class ; # ElectricalPowerTransformationFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000497 # ElectricalPowerTransformationProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000497 # ElectricalPowerTransformationProcess
] ;
rdfs:label "electrical power transformation function"@en ;
rdfs:label "função de transformação de energia elétrica"@pt-br ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in an ElectricalPowerTransformationProcess and that consists in converting electrical energy from one voltage level to another through electromagnetic induction, enabling power distribution and utilization at appropriate voltage levels."@en ;
skos:definition "A DesignedFunction that is realized in an ElectricalPowerTransformationProcess and that consists in converting electrical energy from one voltage level to another through electromagnetic induction, enabling power distribution and utilization at appropriate voltage levels."@en .
### Process type
:COPI_0000497 rdf:type owl:Class ; # ElectricalPowerTransformationProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "electrical power transformation process"@en ;
rdfs:label "processo de transformação de energia elétrica"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which electrical energy is converted from one voltage level to another by a transformer through electromagnetic induction between primary and secondary windings, resulting in power transfer at the desired voltage level."@en ;
skos:definition "A PlannedProcess in which electrical energy is converted from one voltage level to another by a transformer through electromagnetic induction between primary and secondary windings, resulting in power transfer at the desired voltage level."@en .
### Equipment universal: PowerTransformerSecondaryWinding
:COPI_0000333 rdf:type owl:Class ; # PowerTransformerSecondaryWinding
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000199 # ElectricalPowerTransformationFunction
] ;
rdfs:label "power transformer secondary winding"@en ;
rdfs:label "enrolamento secundário de transformador de potência"@pt-br ;
iof-av:naturalLanguageDefinition "A FiatObjectPart that is the secondary winding of a power transformer and that bears a SecondaryWindingFunction consisting in delivering transformed electrical power at the output voltage level."@en ;
skos:definition "A FiatObjectPart that is the secondary winding of a power transformer and that bears a SecondaryWindingFunction consisting in delivering transformed electrical power at the output voltage level."@en ;
iof-av:naturalLanguageDefinition "Uma FiatObjectPart que é o enrolamento secundário de um transformador de potência e que possui uma SecondaryWindingFunction consistindo em fornecer energia elétrica transformada no nível de tensão de saída."@pt-br ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Constructive classification basis - the physical configuration (being the secondary winding of a power transformer) provides necessary conditions, but sufficient conditions are harder to assert under OWA without risking false positives for specialized or hybrid transformer configurations."@en ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000058 ] ;
skos:definition "[ISO 15926-4] A <POWER TRANSFORMER SECONDARY WINDING> is a <TRANSFORMER SECONDARY WINDING> intended to be the secondary winding of a power transformer"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
ElectricalPowerTransformationFunction
⊑ DesignedFunction
Realized in
ElectricalPowerTransformationProcess
⊑ PlannedProcess
The identity-giving function is the same as the parent transformer - electromagnetic power transformation. The secondary winding participates in this same function as the output-side component. This reuses the existing ElectricalPowerTransformationFunction from the already-enriched power transformer class.
2
Genus Determination
MaterialArtifact
bfo:Object (BFO_0000030)
Monolithic causally unified material artefact.
MaterialArtifact ≡ Object ⊓ ∃bearerOf.DesignedFunction.
A power transformer secondary winding is a portion of a power transformer object demarcated by fiat - it is not a separable material artifact that can exist independently, but rather a functionally and spatially defined part of the larger transformer assembly. Unlike a removable component, a winding is integrated into the transformer's electromagnetic structure and cannot be replaced without disassembling the core transformer apparatus.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
No component terms are provided in the source standards, and the definition does not specify internal parts of the winding itself. A winding is essentially a coil of conductive material, but without source evidence for specific subcomponents (conductor, insulation, terminals, etc.), no parts are modeled at this universal level.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
—
Outputs (O)
—
Transformation (T)
electromagnetic energy transfer from primary to secondary side with voltage transformation
The secondary winding receives electromagnetic energy from the primary winding through the transformer core and outputs electrical power at the transformed voltage level. This signature is consistent with the overall transformer function but represents the output side of the transformation.
5
Axiom Mode Decision
Necessary conditions only
— modelled as a primitive universal
(⊑, SubClassOf). Identity is grounded in designed
function and cannot be reduced to a property checklist.
Constructive classification basis - the physical configuration (being the secondary winding of a power transformer) provides necessary conditions, but sufficient conditions are harder to assert under OWA without risking false positives for specialized or hybrid transformer configurations.
Cross-Standard Observations
Only one source (ISO 15926-4) provides a definition. The definition is minimal, relying heavily on the parent class TRANSFORMER SECONDARY WINDING for semantic content.
