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Equipment VFD-101
FM ground_fault_protection_nuisance
ISO 14224 mode Ground fault protection nuisance Ground fault protection nuisance
Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
接地故障检测误动/拒动
VFD-101 · Variable Frequency Drive (VFD)
Related equipment → VFD-101
0.82Source conf.
—Evidence conf.
Ground fault protection nuisanceISO 14224 mode
1Failure Mechanism
Function:提供接地故障保护
Failure cause:漏电流检测受共模干扰误动，或剩余电流器件老化拒动
Damage mechanism：漏电流检测阈值受共模干扰误动，或剩余电流器件老化/触点粘连拒动
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类).
3Evidence Chain (supporting basis)
This FM has no offline curated evidence text; it is derived from the ontology KB and cross-validated by the listed standard clauses and related accident investigations.
Governing standards (evidence)：std:IEC 61800-5-1 — Adjustable speed electrical power drive systems — Safety requirements · 机理级工程估计，非实测；引用 governing standard 作为分类出处std:IEC 61800-3 — Adjustable speed electrical power drive systems — EMC requirements · 机理级工程估计，非实测；引用 governing standard 作为分类出处
4Related Real Accidents (traceable to accident cards)
This FM is recorded in 2 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
IEC 61800-5-1IEC 61800-3
No separate clause reference.
6Derived Analysis (seeded from this FM)
5/3/4FMEA Sev/Occ/Det
0.04RBI λ
0.6Monitor pdet
12 月Insp. int.
Current tasks:保护功能定期测试 | 剩余电流器件校验
RCFA incident:接地故障检测误动/拒动：漏电流检测受共模干扰误动，或剩余电流器件老化拒动，后果类型 Operational/Safety，严重度 5
7RCM Maintenance Decision (strategy landing)
PMScheduled (Proactive) Maintenance
Recommended task绝缘/电气试验 + 继电保护定值校核 + 操动机构特性测试; 标定/零点-跨度校验 + SIL Proof test + 阀门行程试验 + 变更管理
Suggested intervalHigh risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Decision basis机理类别=electrical; instrument
Governing standardsGB/T 14285GB/T 21109IEC 60034IEC 61511IEEE C57ISA 84
⚠ This decision is engineering-inferred by RCM logic from the damage mechanism / root cause / failure cause — it is not derived from measured site history. Confirm with the equipment owner and process before execution.
⚠ 本卡技术正文（功能 / 致因 / 损伤机理 / RCFA 叙事）保留中文原文——依可信 AI 红线，自由技术文本不自动机翻、不编造英文译文。UI、设备类型、FM 名、ISO 码、标准号均为英文。