{"requirement_id":"JDDG25-14.11.3.3-R02","source":{"document":"Japan District Design Guide","version":"9.0","publication_date":"2025-04","chapter":"14","section":"14.11.3.3","title":"LOW VOLTAGE – CIRCUIT BREAKERS","page_printed":257,"page_pdf":287,"fact":"Solid-state multifunction protective devices are to be specified in switchgear or larger distribution panels when they best achieve protective-coordination objectives.","modality":"imperative","strength":"conditional_mandatory"},"localization_ja":{"language":"ja","title_ja":"低圧―遮断器","title_status":"controlled_editorial","fact_ja":null,"fact_translation_status":"pending","modality_rendering_ja":"条件を満たす場合は～すること","strength_label_ja":"条件付き必須","translation_priority":"high","translation_notes":["Canonical quality flag: possible_duplicate_section_content。日本語化で原典上の問題を解消したことにしない。"],"title_translation_provenance":"editorial_controlled","fact_translation_provenance":"not_translated","publication_eligible":false},"references":[],"meaning":{"engineering_basis":null,"engineering_basis_source":null,"engineering_interpretation":null,"interpretation_confidence":null},"risk":{"failure_modes":[],"failure_mode_source":"not_stated","failure_domains":[]},"quality":{"source_status":"normal","data_quality_flag":"possible_duplicate_section_content"},"applicability":{"applicability_class":"conditional_machine","evaluation_mode":"machine","evaluation_scope":"project","input_semantics":"engineering_determination","source_condition_text":"they best achieve protective-coordination objectives","trigger":{"field":"design_determinations.protective_coordination_best_achieved_by_solid_state_multifunction","op":"is_true"},"approval_gate":null,"exception_condition":null,"condition_provenance":"source_explicit","normalization_provenance":"editorial_normalization"},"lifecycle":{"primary_phase":"design","primary_phase_label":"Design","applicable_phases":["design"],"phase_links":[{"phase":"design","provenance":"jddg_cross_section_explicit","basis":"Linked to separate JDDG Section 14.8 design evidence/submittal requirements.","phase_label":"Design"}]},"responsibility":{"primary_workflow_owner":"ACT-DESIGNER-AE","primary_workflow_owner_name":"Designer / A-E","actor_assignment_status":"workflow_only","actors":[{"actor_id":"ACT-DESIGNER-AE","actor_name":"Designer / A-E","actor_class":"project_delivery","source_named":true,"relation_type":"workflow_owner","provenance":"editorial_derived","lifecycle_phase":"design","lifecycle_phase_label":"Design","basis":"Workflow owner assigned from lifecycle phase for checklist routing; not a contractual responsibility statement."}]},"verification":{"method":"design_and_installation_conformance_review","stage":["design"],"acceptance_criteria":null,"evidence_required":["design_document_or_installed_condition"],"verification_provenance":"editorial_derived","evidence_provenance":"jddg_cross_section_explicit","audit_status":"derived_check_method_not_stated_by_source","audit_confidence":"medium","acceptance_provenance":"not_stated_in_jddg","evidence_type_ids":["EV-DESIGN-ANALYSIS-FINAL","EV-SHORT-CIRCUIT-ANALYSIS","EV-INTERMEDIATE-ONE-LINE","EV-FINAL-CALCULATIONS","EV-FINAL-DRAWINGS","EV-CONTRACTOR-SC-COORDINATION"],"supporting_source_requirements":["JDDG25-14.8.4.3-R01","JDDG25-14.8.3.3-R02","JDDG25-14.8.3.1-R06","JDDG25-14.8.4.3-R02","JDDG25-14.8.4.1-R01","JDDG25-14.8.4.1-R03","JDDG25-14.8.3.2-R05"],"source_support_scope":"design_submittal_or_analysis"},"resolved_evidence":[{"evidence_type_id":"EV-DESIGN-ANALYSIS-FINAL","name":"Final Design Analysis compliance verification","source_requirement_ids":["JDDG25-14.8.4.3-R01"],"stage":["final_design"],"source_scope":"Final Design Analysis should support and verify design compliance with project requirements."},{"evidence_type_id":"EV-SHORT-CIRCUIT-ANALYSIS","name":"Short-circuit analysis","source_requirement_ids":["JDDG25-14.8.3.3-R02"],"stage":["intermediate_design"],"source_scope":"Intermediate calculations include short-circuit analysis."},{"evidence_type_id":"EV-INTERMEDIATE-ONE-LINE","name":"Intermediate one-line / riser diagram","source_requirement_ids":["JDDG25-14.8.3.1-R06"],"stage":["intermediate_design"],"source_scope":"One-line/riser diagrams show conduit/conductor sizes, panels, breaker frame/trip values, and short-circuit ratings."},{"evidence_type_id":"EV-FINAL-CALCULATIONS","name":"Final engineering calculations","source_requirement_ids":["JDDG25-14.8.4.3-R02"],"stage":["final_design"],"source_scope":"All final calculations are included in the Final Design Analysis."},{"evidence_type_id":"EV-FINAL-DRAWINGS","name":"Final contract drawings and details","source_requirement_ids":["JDDG25-14.8.4.1-R01","JDDG25-14.8.4.1-R03"],"stage":["final_design"],"source_scope":"Final drawings contain required details and are checked for discrepancies and interdisciplinary compatibility."},{"evidence_type_id":"EV-CONTRACTOR-SC-COORDINATION","name":"Contractor short-circuit study and time-coordination curves","source_requirement_ids":["JDDG25-14.8.3.2-R05"],"stage":["contractor_submittal"],"source_scope":"For the stated demand/critical-process condition, specifications should require contractor short-circuit study and time-coordination curves."}],"supporting_source_requirements":[{"requirement_id":"JDDG25-14.8.4.3-R01","section":"14.8.4.3","title":"DESIGN ANALYSIS","fact":"Final design analysis should support and verify that the design complies with project requirements."},{"requirement_id":"JDDG25-14.8.3.3-R02","section":"14.8.3.3","title":"DESIGN ANALYSIS","fact":"Intermediate design calculations should include short-circuit analysis."},{"requirement_id":"JDDG25-14.8.3.1-R06","section":"14.8.3.1","title":"DRAWINGS","fact":"Intermediate one-line/riser diagrams are to show conduit and conductor sizes, panels, breaker frame sizes, trip amps, and short-circuit ratings."},{"requirement_id":"JDDG25-14.8.4.3-R02","section":"14.8.4.3","title":"DESIGN ANALYSIS","fact":"All final calculations are to be included in the Final Design Analysis."},{"requirement_id":"JDDG25-14.8.4.1-R01","section":"14.8.4.1","title":"DRAWINGS","fact":"Final drawings should contain all details required for the final package."},{"requirement_id":"JDDG25-14.8.4.1-R03","section":"14.8.4.1","title":"DRAWINGS","fact":"Final drawings are to be checked for discrepancies and compatibility with specifications and other disciplines."},{"requirement_id":"JDDG25-14.8.3.2-R05","section":"14.8.3.2","title":"SPECIFICATIONS","fact":"For designs with demand of at least 500 kVA or processes where loss of function is undesirable, specifications should require the construction contractor to provide a short-circuit study and time-coordination curves."}],"references_resolved":[]}