FM Traceability Card · trace the source basis (tap links to trace back)
← Back to KB navigation
Equipment TX-101 FM oltc_contact_wear_sticking ISO 14224 mode OLTC contact wear / sticking OLTC contact wear / sticking Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
有载分接开关触头磨损/卡涩
TX-101 · Power Transformer
Related equipment → TX-101
0.82Source conf.
—Evidence conf.
OLTC contact wear / stickingISO 14224 mode
1Failure Mechanism

Function:带励调节变比

Failure cause:切换电弧烧蚀触头，机械传动卡涩或过渡电阻断裂

Damage mechanism：OLTC 切换电弧烧蚀触头，机械传动卡涩或过渡电阻断裂导致拒动/连动

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 60214 — On-load tap-changers · 机理级工程估计，非实测；引用 governing standard 作为分类出处
  • std:IEEE C57.131 — IEEE Standard for Requirements for Tap Changers · 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-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 60214IEEE C57.131IEC 60076

No separate clause reference.

6Derived Analysis (seeded from this FM)
6/4/3FMEA Sev/Occ/Det
0.08RBI λ
0.65Monitor pdet
12 月Insp. int.

Current tasks:OLTC 油色谱/过渡电阻监测 | 动作次数管理 | 吊芯检修

RCFA incident:有载分接开关触头磨损/卡涩：切换电弧烧蚀触头，机械传动卡涩或过渡电阻断裂，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
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
Governing standards
GB/T 14285IEC 60034IEEE C57
⚠ 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 oltc_contact_wear_sticking · 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.