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Wind Turbine Generator (WTG) Audit Checklist by Gensol - 16.06.18

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WTG has many components & the audit checklist helps to maintain the WTG. Checklist covers the following options -
a) Transformer
b) Isolator
c) VCB Panel & Switch Yard
d) Power Panel
e) Capacitor Panel
f) DFIG Panel
g) Control Panel
h) Junction Box
i) Tubular Tower Shell
j) Climb Arrestor
k) Cables
l) Yaw System
m) Main Bearing
n) Gear Box
o) Generator
p) Rotor Brake
q) Hydraulic Unit
r) Hub Lock
s) Nacelle Control Panel
t) Anemometer & Wind Pane
u) Rotor Blade
v) Battery Bank
w) Nose Cone

Published in: Business
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Wind Turbine Generator (WTG) Audit Checklist by Gensol - 16.06.18

  1. 1. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 1 of 37 Wind Turbine Generator (WTG) Check List WTG- Location Number OEM Name Model/ Hub Height State Name Site Name WTG- Location SAP Number Customer Name Control Reading Name Of Auditor Date Of Inspection WTG- Location Number WTG Stop Time WTG Start Time Auditor Signature Site In-Charge Signature Date: Date:
  2. 2. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 2 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph A WTG TRANSFORMER 1 Check Transformer oil leakages from radiator Fins, HV Bushings, Tank, Conservator & Valve, Transformer Parts Corrosion, Oil Level, Bushing Connections , 1.1 Check WTI & OTI are working, OTI/WTI Protection with Metal mesh Cover, WTI & OTI Cables condition, WTI & OTI Pointer Okay & Mirror Condition, 1.2 Corrosion on transformer parts, Radiator, Tank, Conservator & Hardware’s 1.3 Transformer junction Box Cable routing through Metal/PVC Pipes ( Duct), Alignment of Metal/PVC Pipes with Transformer Junction Box,
  3. 3. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 3 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph Cables are rubbing to Metal pipes/PVC Pipes, 1.4 Check Condition Of Breather ( Silica gel, oil Cup), Position of Arching Horns , Transformer plinth condition & Transformer Mounting, 1.5 Check Transformer Earthling I.e. Neutral Earthling, Body Earthling & Junction Box Earthling, 1.6 Visual Check of CT/PT ( Any Bulging, Oil level & Connections), CT & PT Earthling CT & PT Junction Box CT & PT Mounting 1.7 OTI & WTI Temp.
  4. 4. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 4 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph B Isolator Condition 2 Check for smooth operation, Ensure that all the phases open and close fully and simultaneously, Ensure Proper Spring pressure at female contacts so that good , 2.1 Drop out (DO) fuse Availability 2.2 Isolator Operating pipe Condition/Handle condition 2.3 Isolator Earthling 2.4 LOTO Provision
  5. 5. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 5 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph C VCB Panel & Switch Yard Condition 3 VCB Tripping with activation of protection relay & manual, Tripping, Trip circuit, Power pack & all Protection Fuses, Protection Relays, Panel meters & Switches, Panel door, 3.1 Switch yard all Earthlings, Vegetation, Gravel spreading (stone pitching), Switch yard stay wires condition, 3.2 Check air circuit breaker and vacuum circuit breaker for correct operation, indicators ON/OFF condition, springs charged/discharged condition. 3.3 Lighting Arrester (LA) availability
  6. 6. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 6 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph D WTG Outside 4 Check availability of all Earth pits, Check for corrosions & Rust on Earth pit’s connection, Earth Flats connection, Earth Flat connection to Earth Electrode (Pipe), 4.1 Foundation Cracks 4.2 Tower door Ladder 4.3 Tower door Ladder Locking 4.4 Tower door rubber bidding 4.5 Check the Radiator is Cleaned or Not 4.6 Check radiator fan smooth operation 4.7 Check the SCADA link properly installed
  7. 7. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 7 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph E Power Panel 5 Power Panel door condition, Condition panel door & Hinges, 5.1 Panel Cooling, availability of fans, Filter mat availability, 5.2 Condition of Sealing for cable Entry, Fire retardant paint application on cables (1 Meter), 5.3 Bus Bar condition ( for Pitting & Overheating) 5.4 Humming/chattering Noise while operation 5.5 Arcing at bus bar connection 5.6 Decolouring at bus bar 5.7 Arcing/ Decolouring cable terminations 5.8 Cable termination / loose lug – Crimping quality 5.9 Contactor condition / decolouring 5.10 Water leakage in the panel (find leakages point) 5.11 Cable insulation/Sheath damage from bottom panel air circuit breaker of Transformer connectors
  8. 8. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 8 of 37 5.12 UPS availability, UPS Tripping PCB Mounting, UPS Mounting, 5.13 Power cable lug condition, (air circuit breaker –I/p & o/p connections) 5.14 Soft starter & Snubber tightness check, Soft starter mounting, 5.15 Air Circuit breaker (ACB) operation (manual Check) 5.16 ACB Settings :- Nominal Current (In) Rated Current (Ir) Short Circuit current (Isd) Short circuit time (Tsd) Ground fault current ( Ig-B) Ground fault time (Tg)
  9. 9. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 9 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph F Capacitor Panels 6 Capacitor discharge resistor 6.1 Condition of capacitor (Bulged/punctured), capacitor contactors & fuse units, pre charging coils 6.2 Check of connection tightness and born marks, fuse base condition 6.3 Capacitor panel door condition, Condition panel door & Hinges 6.4 Check all capacitor should be in good condition and voltage must be approx 400-417 VDC 6.5 Panel cooling, availability of fans, Filter mat availability
  10. 10. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 10 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph G DFIG Panel 7 Capacitor discharge resistor 7.1 Power, Earthling and control cable connection in DFIG panel torque marks check at DC and AC power terminals 7.2 Condition of DFIG panel cooling duct and tightness at termination, Coolant pressure should be 2.2 bar, Leakage of coolant, 7.3 Check condition of DC limiter resistor, Check condition of DC capacitors, 7.4 All acrylic sheets/ insulation cover used on live terminals/Bus bars 7.5 Bus lines should be earth by clips at the shield , Condensation in DFIG Panel, 7.6 Heating and cooling System 7.7 DFIG Panel door lock, DFIG panel Hinges, Cooling Fans, 7.8 Arcing at bus bar connection 7.9 Decolouring at bus bar
  11. 11. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 11 of 37 7.10 Arcing/Decolouring cable terminations 7.11 Contactor condition / Decolouring 7.12 Fuse condition / tightness 7.13 DFIG panel cable coming should be routed with rubber gland to avoid any damages with sharp edge of panel 7.14 Power cables & control cables routing inside DFIG panel 7.15 Cooling System :- Motor condition Pump condition Connection Pipes condition Structure mounting Cooling Liquid availability Protection System
  12. 12. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 12 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph H Control Panel 8 Component- Mounting in Panels, Cables routing, Loose connection and tightness checks for 25% of connection, 8.1 Bottom Earthling PAS Bus Bar earthling connections 8.2 Emergency Switch operation 8.3 SAFETY Chain Circuit operation 8.4 Panel cooling, availability of fans , Filter mat availability, 8.5 Check functionality of RCCBs 8.6 Surge arrestors, setting of power supply 24V
  13. 13. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 13 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph I Junction Box 9 All connection tightness, Sparking / Burnt marks at connections, Bus Bar condition, Bus Bar Mounting, Insulator condition, 9.1 Connection Lugging, Cable Glands, 9.2 Junction box mounting, Junction box cover, 9.3 Junction Box connections
  14. 14. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 14 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph J Tubular Tower Shell : T1 + T2 + T3 + T4 (as Possible no of sections) 10 Platform chequer plate status & hardware’s condition 10.1 Tubular Tower bottom earthlings 10.2 Ladder condition in Tower Shell 10.3 Gap between tower to tower shell joints (use filler gauge), Sun light is coming inside tower from flanges (check 360 degree), 10.4 Any linear indication (crack) on welds joints/near surface 10.5 Corrosion on welds joints/near surface 10.6 Any types of linear indication(Crack) on tower shell plates 10.7 Flange bolts (Looseness/condition), Flange bolts corrosion, 10.8 Flange Bolts Make 10.9 Tower shell to shell earthling 10.10 Condition of safety rope
  15. 15. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 15 of 37 10.11 Safety rope clamps condition 10.12 Safety rope routing 10.13 Check the discharge flume for blockage 10.14 Check the bolted tower connection between each section 10.15 Check the bolted tower connection between tower section 1 and tower section 2. 10.16 Measurement of tower inclination max. 8mm/m tower height (Misalignment & settlement). 10.17 Grease /Oil spillages on Platforms Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph K Climb Assistor(Wherever applicable) 11 Operation is proper
  16. 16. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 16 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph L Cable Inspection 12 Fire retardant paint at bottom cabinet 12.1 Cable uniformly distributed on cable tray 12.2 Cable rubbing/Insulation damage/crack 12.3 Cable decoloration 12.4 Cable loop holder Orange color PVC sleeve Welding contact to tower,corrosion at welding portion 12.5 Cable routing through cable guide/Cable holder 12.6 Cable guide ring Holding 12.7 End Cap on the cable clamp stud below cable drum 12.8 Cable twisting 12.9 Cable Hitting with ladder and tower 12.10 At Tower top plateform cut-out,cable damage/rubbing
  17. 17. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 17 of 37 12.11 Cable Hanging Cable Socks mounting Cable socks Corrosion Cable Socks Holding 12.12 Cable Socks D-shackle bolt orientation/piercing in cable 12.13 Cable Laying from tower to nacelle(below Gear box) for cutting rubbing at sharp edges/support channel/cable tray clamps 12.14 Cable loop length and loop to cable drum routing 12.15 Cable drum Cables routing 12.16 Cable drum Cables Holding 12.17 Tightness of Cables in cable joint 12.18 No of Cable joints in tower Power Cables 12.19 Check the available joint in power Cables crimping 12.20 Control Cable joints 12.21 Power Cables Clamping 12.22 Fire retardant paint at junction box 12.23 Crimping as per specification. 12.24 Lugs used are standards and as mention in specs
  18. 18. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 18 of 37 12.25 No pinching condition seen 12.26 Check all the cables clips(Clip and Plastic lining) 12.27 Check the cables at the grips and their fastening bolts. 12.28 Cable edge protection at sharp edges,cable drum
  19. 19. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 19 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph M Nacelle 13 Nacelle to tower Cables routing 13.1 Operation of winch Condition of chain 13.2 Nacelle Libero window Winch bottom window road 13.3 Nacelle bottom FRP Door 13.4 Nacelle GRP Cracks Nacelle joints & Nacelle cover Shifting 13.5 Cables Laying inside the Nacelle 13.6 Water leakages from Nacelle joints Water leakages from Nacelle Hoods 13.7 Vibration Sensor condition PCH Box mounting PCH Box Connections 13.8 All Nacelle earthings ( Panels + platform + Generator + Gear Box + Brake Unit + Main Bearing + Slew ring) 13.9 All Nacelle Spark Gaps 13.10 Nacelle PAS Earthing Bus bar Condition Nacelle PAS to WTG Bottom PAS Earthing Connection
  20. 20. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 20 of 37 13.11 Nacelle Metal Platforms availability Cable Twist Limit Switch Assembly North position Sensor availability Yaw Sensor availability 13.12 Check the bolted Connection of generator cantilever for attaching the conical mounts (elastomeric bearings) of the generator. 13.13 Check the elastomer of the generator conical mounts the regarding cracks or damages. 13.14 Check the conical mounts for cracks or other damages.(Connection between casing suspension and GRP) 13.15 Nacelle Cooling Fans availability Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph N YAW System 14 Rim Teeth Greasing 14.1 Backslash between Rim & Pinion Teeth Grease Lubber Condition Grease lubber connections 14.2 Yaw drive 14.3 Yaw drive mounting bolt tightness Yaw motors availability
  21. 21. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 21 of 37 14.4 Leakage from the Yaw Drives 14.5 Abnormal Noise during Yawing 14.6 Yaw Brake availability & setting 14.7 Distance between sensor and metal of Yaw angle sensor 14.8 Distance between sensor and metal of north position sensor 14.9 Yaw brake air gap 14.10 Measure the distance between Yaw rim bottom surface and lateral suspender 14.11 Measure the distance between Yaw rim top surface and main frame 14.12 Check the disk spring preload in the lateral suspenders. 14.13 Measure the distance between Yaw rim lateral surface and lateral suspender
  22. 22. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 22 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph O Main Bearing 15 Lubrication pump Operation Grease lubber condition Main bearing operation Grease lubber electrical connections 15.1 Lab Type 15.2 Grease leakages 15.3 Labyrinth ring Rubbing 15.4 Gap at lock nut 15.5 Noise and temperature/shifting 15.6 Main Bearing fasteners condition
  23. 23. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 23 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph P Gear Box 16 Alignment & Mounting 16.1 Tightness of gearbox connections 16.2 Gearbox mounting to mainframe 16.3 Brake calliper air gap 16.4 Bearing temperature DE & NDE 16.5 Oil Level 16.6 Oil pressure Switch settings 16.7 Silica gel breather availability & color 16.8 Shifting of gear box Gear box noise 16.9 Gear box leakage (slip ring area, LSS, HSS, & radiator) 16.10 Condition of hosepipes Cable routing below gear box 16.11 Radiator – mountings
  24. 24. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 24 of 37 16.12 Leakages from radiators 16.13 Radiators fins condition 16.14 Bellow cover condition 16.15 Oil pump motor condition 16.16 Check the elastomer of contamination by oil or grease 16.17 Check the rubber elements of the noise decoding elements for cracks 16.18 Check the circuit for blocking by touching the lubrication pipes shortly after turbine 16.19 Check the gear box oil cooling fan 1 and 2 circuitry 16.20 Check working of the mechanical driven pump 16.21 Gap between main frame and gear rim at locations
  25. 25. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 25 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph Q Generator 17 Bearing lubrication (DE & NDE) 17.1 Grease Collector Check greasing extension pipe at DE side 17.2 Cover mounting Power cable connections Availability of cable glands Fire retardant paint (FRP) application on cables CU Bus condition 17.3 Check the axial, radial, and angular alignment of the generator drive shaft to the gear box output shaft 17.4 Check all O-ring seals regarding leakage and damage (cracks) 17.5 Generator mount bolt tightness & generator alignment bolt tightness 17.6 Check the function of the slip ring space heater 17.7 Check the function from the internal cooling circuit fan 1 and fan 2 17.8 Check the Earth terminals and located on each NDE foot and Earthing cable is attached to it 17.9 Check the connector and coupling on incremental rotary transducer
  26. 26. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 26 of 37 17.10 Check the gas – recharge pressure in expansion vessel 17.11 Check the system pressure for the cooling circuit on the gauge (2.6 to 3.0) 17.12 Generator earthling and its terminal 17.13 Check the function from the internal cooling circuit fan 1 and fan 2 17.14 Bellow cover condition 17.15 Check control slip ring mounting bolt with GB Torque arm support 17.16 Check Control slip ring holder mounting tightness Check control slip ring cover 17.17 Control slip ring brushes Contact ring condition Separators insulation rings condition Brush connections Brush holders conditions 17.18 Power slip ring Brushes Contact ring condition Separators insulation rings condition Brush connections Brush holders conditions Limit switches condition Bellow 17.19 Additional Earthing brush provision (Grounding Insulators) :- Contact ring condition Separators insulation ring condition
  27. 27. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 27 of 37 Brush connections Brush holders conditions 17.20 Power Cable connections in stator terminal box
  28. 28. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 28 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph R Rotor Brake 18 Disc Brake Pads wears / break sensor 18.1 Brake Gap 18.2 Rotor Brake structure mounting 18.3 Rotor Brake sensor condition 18.4 Check hydraulic brake system for oil leaks
  29. 29. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 29 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph S Hydraulic Unit 19 Electrical operation of hub lock 19.1 Brake operating electrical box 19.2 Check the brake hydraulic line for any damage and leakage and check the expiration date of the flexible tubes 19.3 Check the gas pressure in the rotor brake /pressure supply line accumulator 19.4 Check the rotor lock hydraulic line for any damage and leakage and check the expiration date of the flexible tubes 19.5 Check the hydraulic unit for leakages
  30. 30. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 30 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph T Hub Lock 20 Functionality Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph U Nacelle Control Panel 21 Panel Mounting Nacelle Fan 21.1 Check Panel door lock Condition of hinges 21.2 Modules (MPCB, MCB, Contactors, Surge Arresters, Battery Charger Module) Mountings 21.3 EMERGENCY Switch Operation 21.4 SAFETY Chain Circuit operation 21.5 MPCB Settings
  31. 31. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 31 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph V Anemometer & Wind Vane 22 Anemometer condition & mounting lock nut 22.1 Anemometer & Wind Vane availability 22.3 Anemometer stand lighting arrester availability 22.4 Lighting arrester cable joint to WTG bottom CU PAS Bus bar/ Separate earth pit connection 22.5 Anemometer & Wind Vane Setting
  32. 32. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 32 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph W Rotor Blade 23 Blade mounting bolts 23.1 Blade rota cap condition 23.2 Check 0 Degree setting in all blades both physically and at controller 23.3 Lightning Protection Strips availability Flash Finger Blade platform condition 23.4 Blade surface cracks Blade tip availability Vortex generator (VA) availability 23.5 Check the spar connection 23.6 Check that the drain hole in the area of the blade tip is not clogged 23.7 Check the connections and contact points of the lightening cables of the rotor blades and the brushes 23.8 Check the trailing edge bonding 23.9 Angle encoder Condition
  33. 33. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 33 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph X HUB Inside 24 HUB Entry doors condition 24.1 Panel mounting channels & bolts with hub body 24.2 Slip ring cable adapter support at panel side 24.3 Hub cable dressing and damages due to sharp edges 24.4 Hub cooling fans availability & mounting condition 24.5 Hub all cables connections routings HUB cable cutting at glands 24.6 Grease collecting bottle fixing/leak/damage 24.7 Electrical connections Cables laying & availability of all panels cable glands 24.8 Decolourisation of connector at power supply 24.9 Flash point, burning marks, MPCB & contactor in panels 24.10 Emergency-stop functioning 24.11 Panel door & Channel mounting 24.12 DC-DC supply connector tightness and burnt mark
  34. 34. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 34 of 37 24.13 Safety Speed check ( Pitch batteries healthiness check) PITCH Battery voltage are Ok 24.14 Pitch motor cover condition 24.15 Resolver Mounting condition 24.16 Frequency Drive condition 24.17 Leakage from the PITCH drive Pitch drive mounting 24.18 Rim teeth – Lubrication Grease Lubber condition 24.19 Rim teeth thickness of worn out teeth 24.20 EMERGENCY Switch operation 24.21 Hub all Earthings 24.22 Blade and hub Spark gap 24.23 Hub metal Structure 24.24 Hub Platforms Grease Leakages 24.25 Tightness of bolt connection Battery box to frame Frame to Hub 24.26 Check the setting of feathering position proximity sensor and its operation for all three blades
  35. 35. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 35 of 37 24.27 Check the position and tightness of -5 degree limit switch sensor in all three blades 24.28 Setting of thermostats (Heating) Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph Y Battery Banks 25 Mounting Channels condition All mounting channels condition with all hardware’s 25.1 Battery Box mounting channel tightness/ bush condition V2 hub 25.2 Battery Voltages 25.3 Battery operational life
  36. 36. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 36 of 37 Sl. No. Inspection Points Limits Remarks/Comments (if any) Photograph Z Nose Cone 26 Nose cone mounting bracket tightness Nose cone mounting bracket hardware’s & Rubber bush condition 26.1 Nose cone holding railings 26.2 Crack in Nose cone mounting 26.3 Spark gap (finger) gap setting 26.4 Nose cone lightening arrestor connection with the platform Nose cone LA Copper flat available
  37. 37. WTG Audit Checklist V1.2 Revision 1 Edition 2018 Gensol Engineering Private Limited (Wind Division) Page 37 of 37 * Annexure Verification & Availability 1 List Software Version 2 List of Latest PLCs version 3 List of Latest applicable motor protection switches settings 4 List of Latest fuses applicable in different part of turbines 5 List of Latest applicable hygrostat settings 6 Standard Earthing value defined in specs. 7 Latest Parameter setting, which needs manual entry in turbine for its validations 8 Applicable offsets of turbine (i.e. blade angle, yawing, north direction setting etc.) 9 List of Latest applicable modification/TCIs for its Validation 10 The applicable setting for at different junctions in complete path of lightening protection system ( Blade tip-root-hub- nacelle-tower-earth) 11 Audit Check list 12 Health Card Of WTG Auditor Signature Site In-Charge Signature

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