Report Inspection of wind turbine

Transcription

1 Report Inspection of wind turbine Report no. : Owner : Nørhede-Hjortmose Vindudvikling ApS Kirkemarken 7 Ølstrup 6950 Ringkøbing Manufacture : Vestas Type : V66-1,75 MW Serial number : 1463 Site : Novej Ringkøbing Site location UTM 32 : Ø , N Commissioning date : December 20, 2003 Inspection date : April 02, 2013 Purpose of inspection : Inspection on sale Requested by : Dorthe Clausen Heboltoft Ringkøbing Ole Andersen April 10, 2013

2 Conclusion No. Shall be performed To follow up Recommen dations 1 The guide for the elevator must be written in local languages. X 2 The filters in the tower door needs to be replaced. X 3 The covers on all blades can be bended in shape when heated, but this can only be done once. X 4 When the blades are dismount and lying on the ground, it is advisable to inspect the blades carefully and correct any damages. X 5 The missing bolts on cover plates to the blades in the hub must X be mounted. 6 A strips to protect the cables in the hub must be mounted. X 7 The radiators for the oil coolers must be kept clean on the air X side. 8 The air hoses on the oil cooling system shall be exchanged. X 9 The radiator for the VCS cooler must be kept clean on the air side. X 10 The coating on the nacelle wall need to be repaired. X 11 The display in the control box must be adjusted or replaced. X 12 By the test slight noise is heard from the bearing in ND-end of X the generator. It has to be controlled if the bearing is well lubricated by the automatic lubrication device. 13 By the test a thumping sound is heard from the bearing in D-end of the generator. It has to be controlled what is causing the sound. X Ole Andersen April 10, 2013 Report no

3 Disclaimer This report comprises the results of the inspections carried out on Vestas V66-1,75 MW wind turbine erected on the site Novej 16, Ringkøbing, Denmark, commissioned on December 20 th, This report is based on visual observations. The conclusions in the report are based on our experience with the components inspected on the time of the individual wind turbine inspections. The inspections are carried out according to the best practice. It can however not be guaranteed that all faults on the wind turbine have been found. Danmarks Vindmølleforening (The Danish Wind Turbine Owners Association) cannot be held responsible partly or in full for any losses in production or any loss of materials which may occur now or in the future. The recommendations, hints or advice given in this report whether they will be followed or ignored shall not hold Danmarks Vindmølleforening or its employees responsible for any cost, damage or loss that such advice may lead to. Scope The wind turbine was visual inspected on all components as normal for an inspection carried out by Danmarks Vindmølleforening, with special attention on the parts that normally show non-normal conditions for this wind turbine type. The HV transformer and the HV breaker (F60) are not part of the scope. Introduction The wind turbine was inspected on April 02 th, The weather was sunshine with wind speeds of 4 m/s and ambient temperature of around 10 C. The gearbox was inspected on April 11 th, The rapport for the gear box is located after the rapport for the wind turbine. Report no

4 Name plate Vestas Nacelle type V /90V/50HZ-R9010 Item serial no V 50 Hz 1750 kw Turbine no Year 2000 Control system Control cabinet in the bottom of the tower. Vestas Wind turbine type V66-1,75 MW Controller type VMP 1,75/2,0 MW Voltage 3 x 690 V +10/-10 % Voltage 3 x 480 V +10/-10 % Frequency 50 Hz +1/-3 Hz Current 690 V 1418 A Current 480 V 213 A Max short circuit current 690 V 23 ka Max short circuit current 480 V 36 ka Main wiring diagr The following was read at the display of the controller: 1. Power output : 233 kw Generator : o/min Rotor : 13,3 o/min Wind speed : 5,9 m/s Pitch angle : -2,6 1A. Max Power (10 sec. average) : kw Max Wind speed : 27,3 m/s Max rotor : 23,2 o/min Reset time : 31-Jan-13 1B. Turbine no. : 1463 Report no

5 Program Version : C. Speed : 3,4 m/s Relative direction : 23,0 Absolute direction : 186,8 Nacelle direction : 163,8 2. Generator 0 : kwh kvarh Generator 1 : kw 50 kvarh Generator 2 : kwh 3 kvarh Production : kwh kvarh Reset time : 07-jan jan Total : Hours Grid OK : Hours Turbine OK : Hours Run : Hours Generator 1 : Hours Generator 2 : Hours Ambient : Hours Grid : Hours Yawing : 959 Hours Service : 190 Hours Available : Hours Reset : 07-jan Availability Average last 12 months : 98,05 % 5. Power : -3,1 kw cos : 0,86 Frequency : 49,96 Hz Voltage : V Current : A Report no

6 6. Temperatures Minimum Actual Maximum 1 Hydraulic oil : C 2 Ambient : C 3 Nacelle C 4 Nose cone : C 5 Gear oil : C 6 Gear bearing : C 7 Generator bearing : C 8 Generator F1 : C 9 Generator F2 : C 10 Generator F3 : C 11 Slip ring VCS : C 12 Top controller : C 13 Hub controller : C 14 VCP print : C 15 Bus bar section : C 16 Phase L1 : C 17 Phase L2 : C 18 Phase L3 : C 19 Drosselspole : C 20 Cooling water : C 21 Grid Inv L1 : C 22 Rotor Inv L1 : C 23 Rotor Inv L2 : C 24 Rotor Inv L3 : C Reset : 10-jan-12 The lifetime availability, calculated as turbine OK / Grid OK gives 97,91%, which is lower than normal. The highest temperature of the gear oil in the sump is registered at 63 C which is normal. The maximum temperature of the gear bearing is registered at 69 C, which is normal. As a rule of thumb the bearing temperature should be maximum 10 C higher than the oil sump temperature and it should never exceed this by more than 20 C. The maximum temperatures of the generator windings are 96 C, which is normal. The nameplate of the generator indicates that the generator is manufactured for maximum 140 C. The maximum generator bearing temperature is 71 C, which is normal. Report no

7 It is recommended to read, store and then reset these maximum and minimum values from time to time. All temperature readings are within the normal level or lower of what is normally seen for this wind turbine type. Alarm list Alarm list covering the period from 3/ to 9/ is downloaded from the scada system. The total number of registrations is 125. The most frequent registrations which the wind turbine is not responsible for are shown in the table below: Event text Number Emerg. Stop circuit broken 6 Too many auto restart 5 Emerg. Stop not connected 2 Wind speed High 2 The most frequent registrations which the wind turbine is responsible for are shown in the table below: Event text Number Last event time Thermal fault hyd. motor Feb-12 13:34:23 Low oil level gear Aug-18 15:39:29 Temp. control box I hub too low Aug-15 09:26:05 Foundation The foundation was inspected for cracks in the concrete surface, the joint between steel and concrete, etc. The tower is attached to the foundation by bolting the bottom flange of the tower onto a steel section which is cast down and attached to the steel rebar in the foundation concrete. There are no remarks to the foundation. Report no

8 Tower The tower is a tubular steel tower built in 3 sections that are connected using galvanized bolts, nuts and washers. The tower was inspected visually for surface treatment, bolt connections, welds and access conditions. The ladder and the safety wire was inspected. In the top of the tower a vibrations damper is integrated in the tower. The damper consists of a chamber in which a weight is hung. The chamber is filled with oil. The tower is equipped with an elevator capable of carrying 2 persons and some tools. The elevator is checked in Marts 2012, see photo 1. The following remarks were found to the elevator: The guide for the elevator is written in German, se photo 2. The guide must be written in local languages. The filters in the tower door needs to be replaced, see photo 3. Stopped filters lead to higher temperature in nacelle, gearbox, generator and more. Blades Vestas Vestas Vestas 32B (C) 32B (B) 32B (A) The blade have been repaired in April The blades were inspected for cracks and other defects of the surface using a pair of binoculars. This method is not nearly as precise and effective compared with repelling down along the blades or inspecting the blades using a man basket and a crane or a hoist, see photo 4-7. Algae are seen on the blades. The blade bearing covers were found slightly bended on all blades, see photo 8. The covers can be bended in shape when heated. When the blades are dismount and lying on the ground, it is recommended to clean the blades and inspect the blades carefully and correct any damages. Report no

9 Pitch system The pitch system inside the nose cone and the rotor hub was inspected for leaks, wear on hoses etc. see photo 9. No leaks were detected and the hoses were found well mounted and without wear. The rotor hub was found well cleaned. The cover plates to the blades are missing bolts, se photo 10. The missing bolts must be mounted. A strips to protect the cables in the hub is missing, see photo 11. The strips must be mounted. A view inside a blade, see photo 12. The pitch operation was found to operate smooth and precise. Main shaft and main bearings The main shaft and main bearings were inspected for damages wear rust etc. To visually inspect the bearings, the end covers must be removed. This is an extensive work requiring special tools and is not included in a standard inspection. However there are no known problems on the main bearings on this wind turbine type. In the waste grease tray below front bearing leak grease was found, see photo 13. At rear bearing no grease was detected,. Such leaks are considered normal. It is almost impossible to completely avoid leaks. Gear box The rapport for the gear box is located after the rapport for the wind turbine. Report no

10 Transmission shaft The transmission shaft was inspected for clearance, wear, cracks etc. The transmission shaft is designed as a tubular composite shaft with glued aluminium flanges in each end. The flanges are connected to the generator and gearbox respectively using composite discs as flexible joints. No cracks were found on both composite discs around the mounting eyes, see photo 14 and 15. Generator ABB ABB Industry CE Made in Helsinki, Finland Type AMK 500L 4A BATYH No Year 2002 Phases 3~ Output 2020 kw Duty S1 Voltage 690 V Connection D Frequency 50 HZ Insul. Cl. F Speed 1680 rpm Weight 5010 ( excl cooler) kg. Current 1522 A IP 54 Power factor 1,0 IC 666 Sec. voltage 221 V IM 1001 Sec. current 611 A Overspeed 2450 rpm 2 min. Ambient 40 C. The generator has been replaced in January The slip ring unit at the NR end of the generator was inspected. No abnormal wear was found, see photo 16. The contact rings and the coal brushes are wear parts that will need to be replaced multiple times during the expected life of the wind turbine. A fan is mounted to suck out carbon dust from the brushes out of the unit. The terminal box on the generator was opened. Photo 17. There was nothing to report. The generator is equipped with an automatic lubrication device, se photo 18. At the day this inspection took place the grease level was almost 100%. The greasing device is equipped with a stirrer to keep the greasing floating in the container. Report no

11 Yaw system The yaw system was inspected on the sliding surfaces and on teeth and drives. Motorer 1,5 kw 2,3 A 4 krøje gear Snekke-trin Bonfiglioli VF 110 FC1 100B14 ratio = 40 Planet-trin Bonfiglioli All 3 sliding surfaces were found well lubricated and without abnormal wear, see photo 19. The teeth of the yaw ring and pinion drives are grease lubricated. The teeth were found well lubricated and without abnormal wear, see photo 20. Oil level in yaw gears were controlled, see photo 21. The yaw system operates smooth and without abnormal noise in both direction. Brake system Stilfreni/Brembo 3 calipers The disc brake mounted on the high speed output shaft of the gearbox is only serving as service brake and is not being used as main brake. Brake pads, callipers, hydraulic hoses and pipes were inspected for leaks etc. The brake pads were found without significant wear and the brake disc was found without deep wear grooves, see photo 22. Hydraulic system PMC Technology SC / 046 All the hoses were found well installed, no sign of wear on the hoses was detected. The oil level was found at 40 % up in the sight glass on the tank in pause, see photo 23. The oil level is acceptable. Report no

12 Cooling system The oil cooling system for the gear oil consist of 2 separate air coolers one with a single fan, the other with 2 fans. The radiators for the oil coolers were found in good condition but must be kept clean on the air side, see photo 24. The large air hoses that leads the air from the cooler to the outside were found with small cracks and holes, see photo The air hoses must be exchanged. Radiators with dirt and bad hoses lead to higher temperature in nacelle, gearbox, generator and more. A separate water/glycol cooling system is installed for cooling the power electronics in the main control panel (the VCS system). The liquid level in the tank was found above minimum level, see photo 27. No leaks were in the system. The radiator for the VCS cooler must be kept clean on the air side, see photo 28. Nacelle The nacelle was inspected for surface treatment, bolt connections, weldings, wear on moving parts, cleanliness and accessibility. The nacelle was found well cleaned. The coating on the nacelle wall need to be repaired, see photo 29. Electrical installations Cables etc. were inspected for correct mounting and wear. The cabinets in the nacelle were opened for inspection. In the tower and in the nacelle cables are generally well fastened. Wind direction and wind speed measurement is performed by two ultrasonic wind sensors from Thies, see photo 30. The display in the control box has unclear characters, see photo 31. The display must be adjusted or replaced. Report no

13 Functional test The vibration sensor and the emergency stop buttons in the nacelle were tested and found working. The brake and pitch system was found working as well. The nacelle crane was tested. The function of the crane was found OK. The turbine was connected to the grid. By the test slight noise is heard from the bearing in ND-end of the generator. It has to be controlled if the bearing is well lubricated by the automatic lubrication device. By the test a thumping sound is heard from the bearing in D-end of the generator. It has to be controlled what is causing the sound. Ole Andersen April 10, 2013 Report no

14 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 1. The elevator is checked in Marts Photo 2. The guide for the elevator is written in German.

15 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 3. The filters in the tower door needs to be replaced. Photo 4. Algae are seen on the blades.

16 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 5. Blade A. Photo 6. Blade B.

17 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 7. Blade C. Photo 8. The blade bearing covers were found slightly bended on all blades.

18 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 9. The pitch system inside the rotor hub. Photo 10. The cover plates in the hub are missing bolts.

19 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 11. A strips to protect the cables in the hub is missing. Photo 12. A view inside a blade.

20 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 13. Leak of grease from the front main bearing. Photo 14. No cracks were found on this composite disc.

21 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 15. No cracks were found on this composite disc. Photo 16. The slip ring unit.

22 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 17. The terminal box on the generator was opened. Photo 18. The automatic lubrication device for the generator.

23 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 19. All 3 sliding surfaces were found well lubricated. Photo 20. The teeth in yaw system were found well lubricated.

24 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 21. Yaw gear. Photo 22. Brake system.

25 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 23. Hydraulic system. Photo 24. The radiators for the oil coolers must be kept clean on the air side.

26 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 25. Large air hose was all found with small cracks and holes. Photo 26. Large air hose was all found with small cracks and holes.

27 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 27. Separate water/glycol cooling system. Photo 28. The radiator for the VCS cooler.

28 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 29. The coating on the nacelle wall need to be repaired. Photo 30. Wind sensors.

29 Report nr Nørhede-Hjortmose Vindudvikling April 02, 2013 Vestas, V66-1,75 MW, ID 1463 Photo 31. The display in the control box has unclear characters.

30 Report Gearbox inspection Report no. : Owner : Nørhede-Hjortmose Vindudvikling ApS Kirkemarken 7 Ølstrup 6950 Ringkøbing Manufacture : Vestas Type : V66-1,75 MW Serial number : 1463 Site : Novej Ringkøbing Site location UTM 32 : Ø , N Commissioning date : December 20, 2003 Inspection date : April 11, 2013 Purpose of inspection : Inspection on sale Requested by : Dorthe Clausen Heboltoft Ringkøbing Poul Madsen April 16, 2013

31 Introduction This report is prepared on the basis of a visual inspection of the gearbox of the wind turbine including use of endoscope. The conclusions are taken from the known experience with the components at the time of the inspection. The inspection is carried out after best practice and there is no guarantee that all faults on the gearbox are found. The wind turbine was inspected on the April 11, The wind turbine was producing power at the time of arrival. Conclusion Nr. Text 1 The gearbox was found in good condition age and operations hours taken in consideration. 2 The manometer on the off-line filter is defect. The manometer must be replaced. Poul Madsen April 16, 2013 Report no

32 Gear box Lohmann + Stolterfoht Type: Product no.: 3483 Order nr.: Produced in: 2000 / Weight Kg Power input: 1750 kw Input speed: 21,3 1/min Ratio: 78,571 Lub. - class: CLP 320 The gearbox has been replaced September 15, The oil in the gearbox is Texaco Meropa 320. The oil level was found over the maximum mark in the oil level glass, se photo 1. It is recommended to keep the oil level as close to the maximum mark as possible. The gearbox is a three-stage gear with one planetary stage followed by two parallel axle stages. See enclosure for definitions of shafts, gear mesh and bearings. Wear and indentation marks on gear mesh and wear in bearings are given in categories. See enclosure explaining these categories. The inspection covers were dismantled for inspecting of visible gears and bearings. Gear mesh Photo Observation Category Category Ring gear 2-3 The flanks wear found in good K0 P0-1 condition with no wear. Planet wheels A 4-5 A few indentation marks and some K0-1 P0-1 mikropitting, no abnormal wear found. Planet wheel B 6-7 A few indentation marks and some K0-1 P0-1 mikropitting, no abnormal wear found. Planet wheel C 8-9 A few indentation marks and some K0-1 P0-1 mikropitting, no abnormal wear found. Sun wheel A few indentation marks and some K0-1 P0-1 mikropitting, no abnormal wear found. Gear wheel on low 12 The flank was found in good K0-1 P0 speed intermediate condition with a line of shaft mikropitting. Report no

33 Pinion on high speed intermediate shaft Gear wheel on high speed intermediate shaft Pinion on high speed shaft 13 The flank was found in good condition with a line of mikropitting and a few indentation marks. 14 The flank was found in good condition with a line of mikropitting. 15 The flank was found in good condition with a line of mikropitting, a few indentation marks and a standstill mark. K0-1 P0-1 K0-1 P0 K0-1 P0-1 Bearing position R-Planet carrier Bearing type Photo Observation Category Cylindrical roller bearing 16 Light wear stripes. No signs of abnormal wear. L0-1 NR-Planet carrier Planet wheel A Planet wheel B Planet wheel C R-Low speed intermediate shaft NR-Low speed intermediate shaft R-High speed intermediate shaft NR-High speed intermediate shaft R-High speed shaft NR-High speed shaft Cylindrical roller bearing Cylindrical roller bearing Cylindrical roller bearing Cylindrical roller bearing Cylindrical roller bearing. Cylindrical roller bearing Cylindrical roller bearing Cylindrical roller bearing. Cylindrical roller bearing. Tapered roller and cylindrical roller bearing. 17 Light wear stripes. No signs L0-1 of abnormal wear Light wear stripes. No signs L0-1 of abnormal wear No signs of abnormal wear. L Light wear stripes. No signs of abnormal wear. 24 Light wear stripes. No signs of abnormal wear. 25 Light wear stripes. No signs of abnormal wear. 26 Light wear stripes. No signs of abnormal wear. 27 Light wear stripes. No signs of abnormal wear. L0-1 L0-1 L0-1 L0-1 L No signs of abnormal wear. L Light wear stripes. No signs of abnormal wear. L0-1 All the inspected tooth flanks, were found in normal condition without signs of abnormal wear. The sun wheel and planet wheels have some mikropitting. A light wear stripe is seen on the teeth in the parallel part of the gearbox. There are seen a few very fine indentation marks in the gearbox. Indentations marks come from particles in the gearbox that are pinched between the gears during their contact. Report no

34 There are signs of normal wear with light wear stripes in the bearings in the gearbox. The gearbox was found in good condition age and operations hours taken in consideration. A magnet on a flexible shaft was swept over the bottom of the gearbox no particles was found, see photo 31. On the magnet in the oil sump no particles were found, see photo 31. The gearbox is equipped with an in-line oil filter mounted on the manifold block and an off-line filter for removing the very fine particles in the oil. The manometer on the off-line filter is defect, see photo 32. The manometer must be replaced. The in-line filter is equipped with a pressure alarm, which will stop the wind turbine if the filter should clog due to excessive amount of wear particles. On the rear end of the gearbox an oil level alarm indicator is mounted. The turbine was tested in operation and the gearbox sound normal. Poul Madsen. April 16, 2013 Report no

35 Definition of shafts High speed shaft Planet shafts High speed intermediate shaft Low speed shaft Low speed intermediate shaft Definition of gearmesh High speed pinion High speed intermediate wheel Ring gear Sun wheel High speed intermediate pinion Planet wheels Low speed intermediate wheel Definition of bearings High speed R-bearing R = rotor end NR = non-rotor end High speed intermediate R-bearing High speed NR-bearing High speed intermediate NR- bearing Low speed intermediate NR- bearing Low speed R-bearing Planet bearing R Planet bearing NR Low speed NR-bearing Low speed intermediate R-bearing

36 Wear on gear mesh are given in categories: Category K0 K1 K2 K3 K4 Typical wear pattern No wear or normal running in wear and polishing of tooth flanks. Micro pitting on 1 5 % of the tooth flank typical in a corner or along the bottom of the tooth flanks. Normally a running in phenomenon, which is not developing further. Micro pitting on a larger area, typical 50 % of the tooth flank. Normally a running in phenomenon, which is not developing further, but it has to be observed closely. Small pin holes in the surface, typical in the area with micro pitting. Normally a running in phenomenon, which is not developing further, but it has to be observed closely. Macro pitting and scaling of larger areas. This will lead to break down and the part has to be exchanged. Indentation marks on gear mesh is given in categories: Category P0 P1 P2 P3 Typical indentation pattern No indentation marks. Few indentation marks from relatively soft particles. Normal pattern. Many indentation marks on the entire tooth flank from relatively soft particles. The gearbox has to be observed closely for development of wear. Many indentation marks on the entire tooth flank from hard particles. Rough surface and/or scuffing. Many wear particles in the gearbox. Repair is necessary. Wear in bearings are given in categories: Category L0 L1 L2 Typical wear pattern No wear. Dull grey surface of the rollers. Light wear stripes. The bearing has to be observed closely for development of wear. Heavy wear, scaling of material. The bearing has to be exchanged.

37 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 1. Oil level in the gearbox. Photo 2. The ring gear.

38 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 3. The ring gear. Photo 4. Planet wheel A. The flank in mesh with the ring gear.

39 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 5. Planet wheel A. The flank in mesh with sun pinion. Photo 6. Planet wheel B. The flank in mesh with the sun pinion.

40 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 7. Planet wheel B. The flank in mesh with the sun pinion. Photo 8. Planet wheel C. The flank in mesh with the ring gear.

41 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 9. Planet wheel C. The flank in mesh with the sun pinion. Photo 10. The sun pinion.

42 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 11. The sun pinion. Photo 12. The low speed intermediate shaft gear wheel.

43 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 13. The high speed intermediate shaft pinion. Photo 14. The wheel on the high speed intermediate shaft.

44 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 15. The high speed pinion. Photo 16. Planet carrier R-end bearing.

45 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 17. Planet carrier NR-end bearing. Photo 18. Planet wheel A rotor.

46 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 19. Planet wheel A non-rotor. Photo 20. Planet wheel B rotor.

47 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 21. Planet wheel B non-rotor. Photo 22. Planet wheel C rotor.

48 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 23. Planet wheel C non-rotor. Photo 24. R-end low speed intermediate shaft.

49 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 25. NR-end low speed intermediate shaft. Photo 26. R-end high speed intermediate shaft.

50 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 27. NR-end high speed intermediate shaft. Photo 28. R-end high speed shaft.

51 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 29. NR-end high speed shaft. Photo 30. NR-end high speed shaft.

52 Report no Nørhede-Hjortmose Vindudvikling Aps April 11, 2013 Vestas, V MW, ID 1463 Photo 31. The magnet in the oil sump. A magnet on a flexible shaft was swept over the bottom of the gearbox. Photo 32. The manometer on the off-line filter is defect.