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exported necessary COPI_0000141
Power Transformer
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000141
Generated onGerado em 2026-04-13
Natural Language DefinitionDefinição em Linguagem Natural
EN
A power transformer is a transformer that bears an electrical power transformation function, realized by electromagnetic induction to transform alternating voltage and current systems to different levels at the same frequency for power transmission purposes.
PT-BR
Um transformador de potência é um transformador que possui uma função de transformação de energia elétrica, realizada por indução eletromagnética para transformar sistemas de tensão e corrente alternadas para diferentes níveis na mesma frequência para fins de transmissão de energia.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every power transformer is a transformer that has the function of transforming electrical power through electromagnetic induction, taking alternating current at one voltage level as input and producing alternating current at different voltage level(s) as output for power transmission.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (PowerTransformer(x) → Transformer(x) ∧ ∃f (ElectricalPowerTransformationFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: ElectricalPowerTransformationFunction]∀f (ElectricalPowerTransformationFunction(f) → ∀p (realizedIn(f,p) → ElectricalPowerTransformationProcess(p)) ∧ ∃p (ElectricalPowerTransformationProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Structural differentia (necessary only)]∀x (PowerTransformer(x) → ∃bearerOf.ElectricalPowerTransmissionRole ⊓ ∃hasInput.AlternatingCurrentPortion ⊓ ∃hasOutput.AlternatingCurrentPortion) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Process participation signature]∀x ∀f ((PowerTransformer(x) ∧ ElectricalPowerTransformationFunction(f) ∧ bearerOf(x,f)) → processType(f,ElectricalPowerConversion)) — Step 5: typed participants in the realising process
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: PowerTransformer <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 "1.1.0-104-g4d16eff" ; 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 "2026-07-13"^^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 :ElectricalPowerTransformationFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :ElectricalPowerTransformationProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :ElectricalPowerTransformationProcess ] ; rdfs:label "electrical power transformation function"@en ; rdfs:label "função de transformação de energia elétrica"@pt-br . ### Process type :ElectricalPowerTransformationProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "electrical power transformation process"@en ; rdfs:label "processo de transformação de energia elétrica"@pt-br . ### Equipment universal: PowerTransformer :PowerTransformer rdf:type owl:Class ; rdfs:subClassOf :Transformer ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :ElectricalPowerTransformationFunction ] ; rdfs:label "power transformer"@en ; rdfs:label "transformador de potência"@pt-br ; iof-av:naturalLanguageDefinition "A power transformer is a transformer that bears an electrical power transformation function, realized by electromagnetic induction to transform alternating voltage and current systems to different levels at the same frequency for power transmission purposes."@en ; skos:definition "A power transformer is a transformer that bears an electrical power transformation function, realized by electromagnetic induction to transform alternating voltage and current systems to different levels at the same frequency for power transmission purposes."@en ; iof-av:naturalLanguageDefinition "Um transformador de potência é um transformador que possui uma função de transformação de energia elétrica, realizada por indução eletromagnética para transformar sistemas de tensão e corrente alternadas para diferentes níveis na mesma frequência para fins de transmissão de energia."@pt-br ; iof-av:isPrimitive "true"^^xsd:boolean ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000058 ] ;
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
ElectricalPowerTransformationFunction ⊑ DesignedFunction
Realized in
ElectricalPowerTransformationProcess ⊑ PlannedProcess
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.
2 Genus DeterminationDeterminação do Gênero
Transformerbfo:Object (BFO_0000030)
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.
3 Differentia SpecificaDiferença Específica
∃bearerOf.ElectricalPowerTransmissionRole ⊓ ∃hasInput.AlternatingCurrentPortion ⊓ ∃hasOutput.AlternatingCurrentPortion

Specifically designed for electrical power transmission applications, as distinguished from measurement, isolation, or other transformer applications.

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.
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

Power transformers require specialized windings rated for power transmission currents/voltages, plus standard transformer components for electromagnetic function and physical protection.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
—
OutputsSaídas
—
TransformationTransformação
electromagnetic voltage and current level transformation with power conservation
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.
MetadataMetadados
COPI IDCOPI IDCOPI_0000141
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000141
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-04-13
UpdatedAtualizado2026-07-12
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
Quick factsDados rápidos
GenusGêneroTransformer
Root classClasse raizAssembly
Axiom modeModonecessary
FunctionFunçãoElectricalPowerTransformationFunction
ProcessProcessoElectricalPowerTransformationProcess
PartsPartes0
Source DefinitionsDefinições nas Fontes 2 sources
ISO 15926-4 POWER TRANSFORMER
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
POSC Caesar Power Transformer
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.