FM Traceability Card · 套管接线端/引线连接过热

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Equipment TX-101 FM terminal_connection_overheat ISO 14224 mode Terminal connection overheat Terminal connection overheat Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)

套管接线端/引线连接过热

TX-101 · Power Transformer

Related equipment → TX-101

0.82Source conf.

—Evidence conf.

Terminal connection overheatISO 14224 mode

1Failure Mechanism

Function:与外部导体连接

Failure cause:端子紧固力矩不足或氧化，接触电阻增大过热

Damage mechanism：端子紧固力矩不足或氧化，接触电阻增大、焦耳热致过热甚至熔焊

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:IEEE C57.104 — IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers · 机理级工程估计，非实测；引用 governing standard 作为分类出处
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

4Related Real Accidents (traceable to accident cards)

NUREG-LER-1997-032-INDIANPOINT3 NUREG-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

IEEE C57.104IEC 60076

No separate clause reference.

6Derived Analysis (seeded from this FM)

6/3/4FMEA Sev/Occ/Det

0.05RBI λ

0.75Monitor pdet

12 月Insp. int.

Current tasks:红外测温/接触电阻测试 | 端子紧固力矩管理

RCFA incident:套管接线端/引线连接过热：端子紧固力矩不足或氧化，接触电阻增大过热，后果类型 Operational/Safety，严重度 6

7RCM Maintenance Decision (strategy landing)

CBMOn-Condition Maintenance

Recommended task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=overheat

Governing standards

API 530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 terminal_connection_overheat · 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.