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Equipment VFD-101
FM cooling_fan_failure
ISO 14224 mode Cooling fan failure Cooling fan failure
Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
冷却风扇失效
VFD-101 · Variable Frequency Drive (VFD)
Related equipment → VFD-101
0.82Source conf.
—Evidence conf.
Cooling fan failureISO 14224 mode
1Failure Mechanism
Function:强制风冷，带走 IGBT 与整流桥损耗
Failure cause:风扇轴承卡滞或绕组开路，风冷流量不足
Damage mechanism：冷却风扇轴承磨损卡滞或电机绕组开路，强制风冷流量不足致 IGBT 结温上升
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:IEEE 841 — IEEE Standard 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 3 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
IEC 61800-5-1IEEE 841
No separate clause reference.
6Derived Analysis (seeded from this FM)
6/4/4FMEA Sev/Occ/Det
0.12RBI λ
0.85Monitor pdet
6 月Insp. int.
Current tasks:风扇转速/风压监测 | 定期润滑/更换
RCFA incident:冷却风扇失效：风扇轴承卡滞或绕组开路，风冷流量不足，后果类型 Operational，严重度 6
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; 温度/红外热成像监测, 超温报警与根因排查
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; overheat
Governing standardsAPI 530GB/T 14285IEC 60034IEEE C57厂家规范
⚠ 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。