A2101 Gearbox oil sump temperature high

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A2101 is the gearbox oil sump temperature high alarm, with a warning threshold of 75 °C.¹² Its trip counterpart is A2102 at 82 °C.³¹² In SCADA logs, WTG-07 and WTG-11 raised A2101 at around 75 °C.^456789101112

Facts

• Warning A2101 and trip A2102 temperature thresholds remain 75 °C and 82 °C.³
• Oil sump temperature warning A2101 is set at 75°C, and oil sump temperature trip A2102 is set at 82 °C.¹
• Alarm A2101, Gearbox oil sump temperature high at 75 °C, can be caused by cooling, oil level, load/ambient-temperature, or bearing issues; actions include checking fan rotation and motor current, cleaning the radiator, checking valve insert LWS-P-30422, checking oil level, reviewing vibration trend, and taking an oil sample.¹³
• Between 2026-04-09 and 2026-06-21, WTG-07 logged 27 A2101 warnings at 75 °C and two A2102 trips at 82 °C, while no other turbine logged an A2101 warning in that period.⁴
• Verification reports no A2101 warning on WTG-07 since 2026-06-24, but vibration remains above the alarm level until the bearing is replaced.¹⁴
• On 2026-05-30, WTG-07 raised A2101 Gearbox oil sump temperature high at 75.3 °C, then raised A2102 Gearbox oil sump temperature trip at 82.6 °C and entered S510 Stopped - fault.⁵⁶⁷
• WTG-07 cleared the 2026-05-30 A2102 trip at 79.4 °C, cleared the A2101 high-temperature alarm at 72.8 °C, and ended S510 Stopped - fault.¹⁵¹⁶¹⁷
• On 2026-06-19, WTG-07 first raised A2101 Gearbox oil sump temperature high at 75.6 °C, then raised A2102 Gearbox oil sump temperature trip at 83.4 °C and entered S510 Stopped - fault.⁸⁹¹⁰
• WTG-11 raised A2101 Gearbox oil sump temperature high at 75.1 °C on 2026-08-12 16:05:02 and cleared it at 72.7 °C on 2026-08-12 16:14:40.¹¹¹²
• A2101 gives a warning at 75 °C, and A2102 trips at 82 °C.²

Timeline

• 2026-04-09: Between 2026-04-09 and 2026-06-21, WTG-07 logged 27 A2101 warnings at 75 °C and two A2102 trips at 82 °C, while no other turbine logged an A2101 warning in that period.⁴
• 2026-05-30: On 2026-05-30, WTG-07 raised A2101 Gearbox oil sump temperature high at 75.3 °C, then raised A2102 Gearbox oil sump temperature trip at 82.6 °C and entered S510 Stopped - fault.⁵⁶⁷
• 2026-05-30: WTG-07 cleared the 2026-05-30 A2102 trip at 79.4 °C, cleared the A2101 high-temperature alarm at 72.8 °C, and ended S510 Stopped - fault.¹⁵¹⁶¹⁷
• 2026-06-19: On 2026-06-19, WTG-07 first raised A2101 Gearbox oil sump temperature high at 75.6 °C, then raised A2102 Gearbox oil sump temperature trip at 83.4 °C and entered S510 Stopped - fault.⁸⁹¹⁰
• 2026-06-24: Verification reports no A2101 warning on WTG-07 since 2026-06-24, but vibration remains above the alarm level until the bearing is replaced.¹⁴
• 2026-08-12: WTG-11 raised A2101 Gearbox oil sump temperature high at 75.1 °C on 2026-08-12 16:05:02 and cleared it at 72.7 °C on 2026-08-12 16:14:40.¹¹¹²

Documents

• SB-LWS-2025-07 Rev. A - Gearbox oil viscosity grade change for LT-32 CCV turbines
• LWS-MM-GBX-32 Rev. D — LT-32 Maintenance Manual Chapter 4 Gearbox Excerpt
• 8D report INC-2026-006 - Repeated gearbox oil over-temperature on WTG-07 (revision 2026-07-10)
• SCADA alarm and status log, 2026-04-01 to 2026-08-31
• Gearbox Fundamentals for Wind Technicians

Related

• Topics: Cold-climate operation and icing, Environmental permit and night curtailment, Gearbox lubrication and oil changes, Gearbox temperature, vibration and oil analysis, Generator brushes and electrical systems, Grid connection and grid operator instructions, Spare parts, stock levels and supply, Training, site rules and acronyms

Sources

Footnotes

1. LWS-MM-GBX-32 Rev. D — LT-32 Maintenance Manual Chapter 4 Gearbox Excerpt — p. 3 · ✓ quote verified ↩ ↩² ↩³

2. Gearbox Fundamentals for Wind Technicians — slide 6 · ✓ quote verified ↩ ↩² ↩³

3. SB-LWS-2025-07 Rev. A - Gearbox oil viscosity grade change for LT-32 CCV turbines — p. 1 · ✓ quote verified ↩ ↩²

4. 8D report INC-2026-006 - Repeated gearbox oil over-temperature on WTG-07 (revision 2026-07-10) — ¶ 6 · ✓ quote verified ↩ ↩² ↩³

5. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 550 · table ↩ ↩² ↩³

6. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 551 · table ↩ ↩² ↩³

7. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 552 · table ↩ ↩² ↩³

8. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 946 · table ↩ ↩² ↩³

9. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 947 · table ↩ ↩² ↩³

10. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 948 · table ↩ ↩² ↩³

11. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1660 · table ↩ ↩² ↩³

12. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 1661 · table ↩ ↩² ↩³

13. LWS-MM-GBX-32 Rev. D — LT-32 Maintenance Manual Chapter 4 Gearbox Excerpt — p. 5 · ✓ quote verified ↩

14. 8D report INC-2026-006 - Repeated gearbox oil over-temperature on WTG-07 (revision 2026-07-10) — ¶ 24 · ✓ quote verified ↩ ↩²

15. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 555 · table ↩ ↩²

16. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 558 · table ↩ ↩²

17. SCADA alarm and status log, 2026-04-01 to 2026-08-31 — row 559 · table ↩ ↩²

Provenance badges✓ quote verified the quoted words were found verbatim in the source texttable values parsed deterministically from the cited table rows