proposed
necessary
electrical connection
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Electricalconnection
Generated on 2026-05-04
Natural Language Definition
EN
An electrical connection is a MaterialArtifact that bears an ElectricalConductionFunction and that provides a pathway for electrical current to pass from one electrical apparatus to another.
PT-BR
Uma conexão elétrica é um MaterialArtifact que possui uma ElectricalConductionFunction e que fornece um caminho para a corrente elétrica passar de um aparelho elétrico para outro.
Formal Axioms
Semi-formal (Aristotelian)
Every electrical connection is a material artifact that bears an electrical conduction function and participates in processes involving electrical apparatus.
First-Order Logic Theory
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▸ Stored override
∀x(ElectricalConnection(x) ↔ (MaterialArtifact(x) ∧ ∃f(ElectricalConductionFunction(f) ∧ bearerOf(x,f)) ∧ ∃p(ElectricalConductionProcess(p) ∧ participatesIn(x,p) ∧ ∃y(ElectricalApparatus(y) ∧ has_participant_at_some_time(p,y)))))
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: ElectricalConnection
<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 "2026-10-07"^^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_0000492 rdf:type owl:Class ; # ElectricalConductionFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000493 # ElectricalConductionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000493 # ElectricalConductionProcess
] ;
rdfs:label "electrical conduction function"@en ;
rdfs:label "função de condução elétrica"@pt-br ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in an ElectricalConductionProcess and that consists in providing a pathway for electrical current to pass from one electrical apparatus to another, enabling electrical connectivity and power or signal transmission."@en ;
skos:definition "A DesignedFunction that is realized in an ElectricalConductionProcess and that consists in providing a pathway for electrical current to pass from one electrical apparatus to another, enabling electrical connectivity and power or signal transmission."@en .
### Process type
:COPI_0000493 rdf:type owl:Class ; # ElectricalConductionProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "electrical conduction process"@en ;
rdfs:label "processo de condução elétrica"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which electrical current is conducted through an electrical connection from one electrical apparatus to another, resulting in the transmission of electrical power or signals between the connected devices."@en ;
skos:definition "A PlannedProcess in which electrical current is conducted through an electrical connection from one electrical apparatus to another, resulting in the transmission of electrical power or signals between the connected devices."@en .
### Equipment universal: ElectricalConnection
:COPI_0000262 rdf:type owl:Class ; # ElectricalConnection
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_0000492 # ElectricalConductionFunction
] ;
rdfs:label "electrical connection"@en ;
rdfs:label "conexão elétrica"@pt-br ;
iof-av:naturalLanguageDefinition "An electrical connection is a MaterialArtifact that bears an ElectricalConductionFunction and that provides a pathway for electrical current to pass from one electrical apparatus to another."@en ;
skos:definition "An electrical connection is a MaterialArtifact that bears an ElectricalConductionFunction and that provides a pathway for electrical current to pass from one electrical apparatus to another."@en ;
iof-av:naturalLanguageDefinition "Uma conexão elétrica é um MaterialArtifact que possui uma ElectricalConductionFunction e que fornece um caminho para a corrente elétrica passar de um aparelho elétrico para outro."@pt-br ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Over-reaching equivalence (ODR-022 §17). A connection is the joining of conductors; conducting electricity is necessary for it but not sufficient. As equivalent it absorbed switch contact, which ISO defines as \"one of the conductive parts forming a contact assembly\" — a component, not a connection."@en ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000058 ] ;
skos:definition "[ISO 15926-4] An <ELECTRICAL CONNECTION> is a <DirectConnection> for letting pass a <CURRENT> from one <ELECTRICAL APPARATUS> to another"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
ElectricalConductionFunction
⊑ DesignedFunction
Realized in
ElectricalConductionProcess
⊑ PlannedProcess
The core identity of an electrical connection is its designed function to conduct electrical current between electrical apparatuses. This is distinct from other electrical functions like switching, protection, or transformation - it is purely about providing a conductive pathway.
2
Genus Determination
MaterialArtifact
bfo:Object (BFO_0000030)
Monolithic causally unified material artefact.
MaterialArtifact ≡ Object ⊓ ∃bearerOf.DesignedFunction.
No domain-specific superclass like 'ElectricalEquipment' or 'ElectricalComponent' is available in the parent candidates or already-enriched classes. The concept represents a physical artifact designed to conduct electrical current, making MaterialArtifact the most appropriate genus from the available IOF-Core classes.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
The ISO 15926-4 definition describes electrical connection at a high level without specifying mandatory components. The subtypes in the Known Component Terms refer to diagram types rather than physical parts. Without explicit part specifications in the source definition or matching entries in the Known Component Terms list, no universal parts can be identified at this level.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
—
Outputs (O)
—
Transformation (T)
electrical current conducted from source to destination apparatus without modification
The signature reflects pure electrical conduction - taking electrical power from one apparatus and transmitting it to another without modification. The transformation is minimal (conduction rather than conversion), distinguishing it from transformers, motors, or other electrical equipment that actively convert or modify the electrical energy.
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.
Over-reaching equivalence (ODR-022 §17). A connection is the joining of conductors; conducting electricity is necessary for it but not sufficient. As equivalent it absorbed switch contact, which ISO defines as "one of the conductive parts forming a contact assembly" — a component, not a connection.
Cross-Standard Observations
Only one source (ISO 15926-4) provides a definition. The subtypes listed are diagram types rather than physical equipment types, suggesting the concept may be used differently across documentation contexts versus physical equipment classification.
Reviewer Notes
Retired 2026-09-03: redundant with electrical connector (COPI_0000263). Source term ELECTRICAL CONNECTION is typed ClassOfDirectConnection in ISO 15926-4, not ClassOfInanimatePhysicalObject -- it is not grounded as a physical artifact in its own source standard, unlike ELECTRICAL CONNECTOR. Demoted from exported to proposed so regen_enriched_owl.py drops it from copi-enriched.owl; row and history kept for audit.
