Litware LT-32

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Litware LT-32 is a wind turbine product that uses a Fabrikam FGT-3200 three-stage gearbox with one planetary stage followed by two parallel helical stages.¹ At Quellmoor Ridge Wind Farm, 12 Litware LT-32 CCV turbines are recorded, with turbine IDs WTG-01 to WTG-12.^{23456789101112131415} The LT-32 has listed lockout/tagout isolation points for electrical, hydraulic, rotational, and thermal energy sources.^161718192021

Facts

• The bulletin applies to LT-32 turbines delivered in CCV configuration with Fabrikam FGT-3200 gearboxes and to LT-32 standard turbines at sites where ambient temperature regularly falls below -20 °C.²²
• The bulletin applies to all variants of LT-32 turbines with M30 10.9 pitch bearing bolts, 72 bolts per blade bearing, and 216 bolts per turbine.²³
• The reason for the bulletin is that loose pitch bearing bolts were found on two LT-32 turbines at another site after three years of operation, and a one-time re-torque restores the preload.²³
• The document applies to LT-32 turbines of all variants with the Fabrikam FGT-3200 gearbox.²⁴
• The LT-32 uses a Fabrikam FGT-3200 three-stage gearbox with one planetary stage followed by two parallel helical stages.¹
• The report covers Quellmoor Ridge Wind Farm, which is recorded as having 12 Litware LT-32 turbines and 36 blades of 57.5 m.²
• The procedure applies to WTG-01 to WTG-12 with Litware LT-32 CCV turbines and Fabrikam FGT-3200 gearboxes.²⁵
• For LT-32 electrical 690 V energy from the generator, converter, and auxiliaries is isolated at the main circuit breaker in the tower base.¹⁶
• For LT-32 electrical 33 kV energy from the transformer feeder is isolated at the ring main unit, which is for authorised persons only.¹⁷
• For LT-32 controller uninterruptible power, the source is the UPS of the controller and the isolation point is the UPS output breaker.¹⁸
• For LT-32 hydraulic energy from pitch and yaw brake accumulators, the isolation point is relief valves to 0 bar.¹⁹
• For LT-32 rotational energy from the rotor and drivetrain, the isolation point is the rotor lock pins.²⁰
• For LT-32 thermal energy from hot gear oil and heaters, the isolation point is cool-down and the heater breaker.²¹
• The instruction describes checking and replacing the generator brushes of Litware LT-32 wind turbines at the Quellmoor Ridge wind farm.²⁶
• All turbine entries are Litware LT-32 CCV turbines with Fabrikam FGT-3200 gearboxes, Hub height (m) 92, and Rotor diameter (m) 118.^{34567891011121314}
• The deck is about the Fabrikam FGT-3200 in the Litware LT-32 and is dated October 2025.²⁷
• Quellmoor Ridge has 12 Litware LT-32 turbines in CCV configuration, identified WTG-01 to WTG-12, with total capacity of 38.4 MW.¹⁵
• The configuration records checked for Quellmoor Ridge Wind Farm showed that all 12 turbines, WTG-01 through WTG-12, were delivered as LT-32 in CCV configuration with Fabrikam FGT-3200 gearboxes, so SB-LWS-2025-07 applies to all 12 turbines.²⁸
• The original requester stated that Contoso operates 12 LT-32 turbines at Quellmoor Ridge and reported that on 21 January two turbines needed more than 6 hours of heating before start-up at -24.6 degrees C.²⁹
• Superseded: The procedure applies to WTG-01 to WTG-12, specified as Litware LT-32 CCV turbines with Fabrikam FGT-3200 gearboxes.³⁰

Timeline

• 2025-07: The configuration records checked for Quellmoor Ridge Wind Farm showed that all 12 turbines, WTG-01 through WTG-12, were delivered as LT-32 in CCV configuration with Fabrikam FGT-3200 gearboxes, so SB-LWS-2025-07 applies to all 12 turbines.²⁸
• 2025-10: The deck is about the Fabrikam FGT-3200 in the Litware LT-32 and is dated October 2025.²⁷

Documents

• SB-LWS-2025-07 Rev. A - Gearbox oil viscosity grade change for LT-32 CCV turbines
• SB-LWS-2025-11 Rev. A - Pitch Bearing Bolt Re-torque
• LWS-MM-GBX-32 Rev. D — LT-32 Maintenance Manual Chapter 4 Gearbox Excerpt
• Blade inspection report WBS-2026-031 - Quellmoor Ridge Wind Farm (May 2026)
• SOP-GBX-010 Rev. B - Gearbox oil change
• SOP-LOTO-001 Rev. C - Lockout/tagout of wind turbines
• WI-GEN-014 Rev. A - Generator Brush Replacement
• Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12
• Maintenance Plan 2026, Issue 2 — Quellmoor Ridge Wind Farm
• Gearbox Fundamentals for Wind Technicians
• Quellmoor Ridge Wind Farm Onboarding and Site Rules (February 2025)
• Email RE: LWS-TS-48213 Applicability of SB-LWS-2025-07 Rev. A to Quellmoor Ridge
• SOP-GBX-010 - Gearbox oil change, Revision A (superseded)

Related

• Topics: Blades, pitch bearings and main-component lifts, 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, Safety, isolation and work at height, Training, site rules and acronyms

Sources

Footnotes

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

2. Blade inspection report WBS-2026-031 - Quellmoor Ridge Wind Farm (May 2026) — p. 1 · ✓ quote verified ↩ ↩²

3. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 2 · table ↩ ↩²

4. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 3 · table ↩ ↩²

5. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 4 · table ↩ ↩²

6. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 5 · table ↩ ↩²

7. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 6 · table ↩ ↩²

8. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 7 · table ↩ ↩²

9. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 8 · table ↩ ↩²

10. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 9 · table ↩ ↩²

11. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 10 · table ↩ ↩²

12. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 11 · table ↩ ↩²

13. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 12 · table ↩ ↩²

14. Asset Register 2026 of Quellmoor Ridge Wind Farm, revision 2026-01-12 — sheet "Turbines", row 13 · table ↩ ↩²

15. Quellmoor Ridge Wind Farm Onboarding and Site Rules (February 2025) — slide 2 · ✓ quote verified ↩ ↩²

16. SOP-LOTO-001 Rev. C - Lockout/tagout of wind turbines — table 2, row 2 · table ↩ ↩²

17. SOP-LOTO-001 Rev. C - Lockout/tagout of wind turbines — table 2, row 3 · table ↩ ↩²

18. SOP-LOTO-001 Rev. C - Lockout/tagout of wind turbines — table 2, row 4 · table ↩ ↩²

19. SOP-LOTO-001 Rev. C - Lockout/tagout of wind turbines — table 2, row 5 · table ↩ ↩²

20. SOP-LOTO-001 Rev. C - Lockout/tagout of wind turbines — table 2, row 6 · table ↩ ↩²

21. SOP-LOTO-001 Rev. C - Lockout/tagout of wind turbines — table 2, row 7 · table ↩ ↩²

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

23. SB-LWS-2025-11 Rev. A - Pitch Bearing Bolt Re-torque — p. 1 · ✓ quote verified ↩ ↩²

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

25. SOP-GBX-010 Rev. B - Gearbox oil change — table 1, row 7 · table ↩

26. WI-GEN-014 Rev. A - Generator Brush Replacement — ¶ 4 · ✓ quote verified ↩

27. Gearbox Fundamentals for Wind Technicians — slide 1 · ✓ quote verified ↩ ↩²

28. Email RE: LWS-TS-48213 Applicability of SB-LWS-2025-07 Rev. A to Quellmoor Ridge — message body, lines 10–12 · paraphrase ↩ ↩²

29. Email RE: LWS-TS-48213 Applicability of SB-LWS-2025-07 Rev. A to Quellmoor Ridge — message body, lines 48–51 · paraphrase ↩

30. SOP-GBX-010 - Gearbox oil change, Revision A — table 1, row 7 · table ↩

Provenance badges✓ quote verified the quoted words were found verbatim in the source textparaphrase reworded from the source text; numbers checked, no verbatim quotetable values parsed deterministically from the cited table rows