FM Traceability Card · trace the source basis (tap links to trace back)
← Back to KB navigation
Equipment TX-101 FM winding_insulation_thermal_aging ISO 14224 mode Winding insulation thermal aging Winding insulation thermal aging Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
绕组绝缘热老化
TX-101 · Power Transformer
Related equipment → TX-101
0.82Source conf.
—Evidence conf.
Winding insulation thermal agingISO 14224 mode
1Failure Mechanism

Function:建立/传输电磁能量

Failure cause:热点温度超 IEC 60076-7 老化模型阈值，纤维素绝缘聚合度下降

Damage mechanism：热点温度超过 IEC 60076-7 热老化模型阈值，纤维素绝缘聚合度 DP 下降、匝间介电强度降低

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 60076 — Power transformers · 机理级工程估计，非实测；引用 governing standard 作为分类出处
  • std:IEC 60076-7 — Power transformers — Loading guide for oil-immersed power transformers · 机理级工程估计，非实测；引用 governing standard 作为分类出处
  • std:IEEE C57.91 — IEEE Guide for Loading Mineral-Oil-Immersed Transformers · 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)
NUREG-LER-1997-032-INDIANPOINT3NUREG-LER-1998-002-BROWNSFERRY

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 60076IEC 60076-7IEEE C57.91

No separate clause reference.

6Derived Analysis (seeded from this FM)
7/3/3FMEA Sev/Occ/Det
0.06RBI λ
0.7Monitor pdet
24 月Insp. int.

Current tasks:热点温度/顶层油温监测 | 负载管理 | 糠醛/DGA 趋势

RCFA incident:绕组绝缘热老化：热点温度超 IEC 60076-7 老化模型阈值，纤维素绝缘聚合度下降，后果类型 Operational/Safety，严重度 7

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 standards
API 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。
FM winding_insulation_thermal_aging · Data from OPC KB and whitelisted public sources, compiled by Reliability AI for reliability demonstration only. Evidence ref codes are internal indices, not public DOIs.