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Equipment MOT-101
FM bearing_current_erosion
ISO 14224 mode Bearing current erosion Bearing current erosion
Source synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 框架归类)
轴电流电蚀
MOT-101 · Electric Motor (Driver)
Related equipment → MOT-101
0.82Source conf.
—Evidence conf.
Bearing current erosionISO 14224 mode
1Failure Mechanism
Function:防止电流经轴承流过
Failure cause:变频驱动共模电压经轴承放电
Damage mechanism：dv/dt 高频共模电压在轴承油膜击穿形成放电电流，蚀刻滚道（IEEE 841 变频驱动条款）
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / API / IEC 61511 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 / API / IEC 61511 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:IEEE 841 — IEEE Std for Petroleum and Chemical Industry—Severe Duty TEFC Motors · 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
API 541IEEE 841ISO 14224:2016GB/T 6075ISO 13372API 580GB/T 7826-2012SAE JA1011_202411
No separate clause reference.
6Derived Analysis (seeded from this FM)
5/2/4FMEA Sev/Occ/Det
0.08RBI λ
0.8Monitor pdet
6 月Insp. int.
Current tasks:轴接地碳刷/绝缘轴承 | 共模电压滤波
RCFA incident:轴电流电蚀：变频驱动共模电压经轴承放电，后果类型 Operational，严重度 5
7RCM Maintenance Decision (strategy landing)
CBMOn-Condition Maintenance
Recommended task壁厚/型线超声测厚 + 耐磨层状态检查, 视情修复或涂层; 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; erosion; instrument
Governing standardsAPI 510API 570API 581GB/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。