A2102 Gearbox oil sump temperature trip

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A2102 Gearbox oil sump temperature trip is an alarm code for a gearbox oil sump temperature trip.¹²³ It trips at 82 °C and stops the turbine automatically.⁴¹²³ The cooling circuit is inspected before restart, and the reset is not performed more than once without inspection.²

Facts

• Warning A2101 and trip A2102 temperature thresholds remain 75 °C and 82 °C.⁴
• Oil sump temperature warning A2101 is set at 75°C, and oil sump temperature trip A2102 is set at 82 °C.¹
• Alarm A2102, Gearbox oil sump temperature trip at 82 °C, stops the turbine automatically; the cooling circuit is inspected before restart, and reset is not performed more than once without inspection.²
• The report was opened on 2026-05-30 after the first A2102 trip.⁵
• 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.⁶
• 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.⁷⁸⁹
• 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.¹⁰¹¹¹²
• 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.¹³¹⁴¹⁵
• A2101 gives a warning at 75 °C, and A2102 trips at 82 °C.³
• The quiz answers state that the HSS drives the generator, A2102 trips at 82 °C, the oil used is Proseware PWG 220, and a rising PQ index means more ferrous wear debris, often from a bearing.¹⁶

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.⁶
• 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.⁷⁸⁹
• 2026-05-30: The report was opened on 2026-05-30 after the first A2102 trip.⁵
• 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.¹⁰¹¹¹²
• 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.¹³¹⁴¹⁵

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. LWS-MM-GBX-32 Rev. D — LT-32 Maintenance Manual Chapter 4 Gearbox Excerpt — p. 5 · ✓ quote verified ↩ ↩² ↩³ ↩⁴

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

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

5. 8D report INC-2026-006 - Repeated gearbox oil over-temperature on WTG-07 (revision 2026-07-10) — table 1, row 4 · table ↩ ↩²

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

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

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

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

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

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

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

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

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

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

16. Gearbox Fundamentals for Wind Technicians — slide 10 · ✓ quote verified ↩

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