Intertek Test Report No CRT-005a Project No. G

Transcription

1 3933 US Rt 11 Cortland, NY Telephone: (607) Facsimile: (607) Intertek Project No. G Mr. Steve Turek Phone: Wind Turbine Industries, Corporation Fax: Industrial Cir SE Prior Lake, MN Subject: Safety and Function Test Report for the Wind Turbine Industries, Corporation (WTIC) Jacobs horizontal-axis wind turbine tested at the Intertek Small Wind Regional Test Center (Intertek RTC) Dear Mr. Turek, This Test Report represents the results of the evaluation and tests of the above referenced equipment under Intertek Project No. G , as part of the US Department of Energy and National Renewable Energy Laboratory (DOE/NREL) Subcontract Agreement No. AEE , to the requirements contained in the following standard: AWEA 9.1 Small Wind Turbine Performance and Safety Standard December 2009 IEC Wind turbines Part 2: Design requirements for small wind turbines Second edition; March 2006 This investigation was authorized by signed Intertek Quote No , dated May 13, A production sample was installed at the Intertek RTC on October 25, 2011, and commissioned on November 1, 2011 for test. This Test Report completes the Safety and Function testing phase of the Jacobs Wind Energy System under Intertek Project No. G If there are any questions regarding the results contained in this report, or any of the other services offered by Intertek, please do not hesitate to contact the signatories on this report. Please note, this Test Report on its own does not represent authorization for the use of any Intertek certification marks. Completed by: Joseph M Spossey Reviewed by: Tom Buchal Title: Project Engineer Title: Senior Staff Engineer Signature: Signature Page 1 of 55 This report is for the exclusive use of Intertek s Client and is provided pursuant to the agreement between Intertek and its Client. Intertek s responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only the sample tested. This report by itself does not imply that the material, product or service is or has ever been under an Intertek certification program.

2 Wind Turbine Generator System Safety and Function Test Report for the Wind Turbine Industries Corporation Jacobs at Intertek Small Wind Regional Test Center Page 2 of 55

3 1.0 Background This test was conducted as part of the DOE/NREL Subcontract Agreement No. AEE for the testing of small wind turbines at regional test centers. The WTIC Jacobs Wind Energy System was accepted into this program by Intertek and DOE/NREL. The full scope of type testing and AWEA Certification provided by Intertek for the Jacobs horizontal-axis wind turbine is covered by this agreement. This test report is a summary of the results of duration testing, and is one of four tests required for the Jacobs 31-20; the other three being power performance, safety and function, and acoustics. Results for these other tests are summarized in their respective Test Reports. The Jacobs turbine was installed at Test Station #5 at the Intertek RTC in Otisco, NY. The Jacobs is designed for grid-connected power delivery, with a maximum power output of 20 kw. It is designed as a Class II upwind turbine, with speed and power control through side furling and a centrifugal variable pitch governor. The blades of the Jacobs drive the low speed shaft of an offset hypoid gearbox with 6.1:1 ratio. The gearbox high-speed shaft drives a brushless three-phase AC synchronous generator with outbound exciter. The generator is rated for VAC operation up to 25 kva. Grid interconnect is provided by a Nexus Nex20 inverter, which fully converts the generator output to single phase 240 VAC for connection to a single/split phase grid. The Nex20 inverter is specifically designed for the Jacobs Wind Energy System. The test tower and foundation were designed and approved by ROHN Products LLC. NYS Professional Engineer stamped tower and foundation designs were also provided by ROHN Products LLC. The designs were based off of the Subsurface Investigation and Geotechnical Evaluation detailed in Atlantic Testing Laboratories report number CD3119E for the Intertek RTC. The electrical network at the testing location is single/split phase 120/240 VAC at 60 Hz. Refer to the wiring diagrams in Appendix A for additional detail. A summary of the test turbine configuration and manufacturer s declared ratings can be found in Table 1 below. 2.0 Test Objective The purpose of the safety and function test on the WTIC Jacobs is to verify that the system displays the behavior predicted in the design, and that provisions relating to personnel safety are properly implemented. This test included critical functions of the control and protection systems that required test verification, as described in the design documentation. These critical functions were: power and speed control; yaw system control loss of load over speed protection at design wind speed or above; and start-up and shut down above design wind speed Following the guidance given in the first edition of IEC Wind turbines Part 22: Conformity testing and certification, it was also relevant to evaluate the aspects of the personnel safety described in the design documentation. For a full description of test parameters refer to Section 7 of this Test Report. Page 3 of 55

4 3.0 Test Summary Testing and analysis of the WTIC Jacobs was performed in accordance with the AWEA 9.1 Standard. AWEA 9.1 calls out clause 9.6 of the second edition of IEC Wind Turbines Part 2: Design requirements for small wind turbines for Safety and Function requirements. Additional guidance from the first edition of IEC Wind turbines Part 22: Conformity testing and certification was also followed for the purposes of Safety and Function testing. Table 1 below defines the configuration of the wind turbine system tested for the purpose of this test report, and provides the manufacturer s declared ratings and specifications. The Jacobs successfully completed all applicable tests in accordance with Clause 9.6 of the second edition of IEC Wind Turbine Industries, Corporation Turbine manufacturer and address Industrial Circle S.E. Prior lake, Minnesota Model Wind Turbine Industries, Corporation Gearbox manufacturer Model: 20kW, Part Number: Serial Number: Offset hypoid design Gearbox specifications 6.1:1 gear ratio Winco Inc; Model 20PS4G-27 Generator manufacturer WTIC Part Number: Serial #: W kw, VAC, 0-40 Hz Generator specifications 3-phase, RPM Nexus Inverter manufacturer Model #: NEX20 Serial #: kw, 240 VAC, 60 Hz Inverter specifications TUV listed - UL 1741 Rotor diameter 9.45 m (31.0 ft.) verified by Intertek Hub height 35.9 m (117.0 ft 8.0 in.) Swept area 70.1 m 2 (755.0 ft 2 ) IEC SWT Class (I, II, III, or IV) II Tower type(s) Lattice Rated electrical power 20.0 kw Cut-in wind speed 4.5 m/s (10.1 mph) Rated wind speed 11.6 m/s (26.0 mph) Survival wind speed 53.6 m/s (120.0 mph) Rotor speed range rpm Fixed or variable pitch Variable Number of blades 3 Blade tip pitch angle 1 Advanced Aero Technologies. Inc Fiberglass Blade manufacturer SNs CGA1849, CGA1854, CGA1852 Proprietary System, Horner Display unit HON:1.13, Control system software Oztek Control Board DSP:1.03 Table 1 Test Turbine Configuration Page 4 of 55

5 4.0 Engineering Judgments or Deviations Testing and analysis of the Jacobs turbine was performed in accordance with the second edition of IEC Design requirements for small wind turbines, dated March No deviations or judgments were made. 5.0 Test Site Description The RTC has class IV winds, and can accommodate turbines that produce 120V or 240V, 60 Hz power. It is on a hilltop, with previous agricultural land use, near the township of Otisco, NY. It was surveyed, analyzed and developed to be a test site for Intertek s customers. The Jacobs was tested at RTC site #5, which has no prominent obstructions in the valid measurement sector, as determined by obstacle assessment in accordance with the Standards. The meteorological equipment tower is due south, 23.6 m (77.5 feet) from the turbine, exactly 2.5 times the diameter of the rotor, as recommended in the Standards. All buildings and potential obstacles were identified and defined in the topographical survey, and were considered during obstacle assessment prior to commencement of testing. Figure 1 below is a topographical survey map showing the Intertek RTC in 10 meter elevation intervals. The Jacobs was installed at RTC site #5, which is shown in the red box in Figure 1. Figure 1 - Intertek RTC topographical survey Page 5 of 55

6 Figure 2 below shows a zoomed view of the turbine and meteorological tower locations identified in the red box in Figure 1. Figure 2 Jacobs and meteorological tower locations A test turbine was installed at Station 8 at the Intertek RTC during the testing period for the Jacobs The procedure for obstacle assessment was followed according to the requirements of the Power Performance test in IEC Due to the small size of the turbine at Station 8, and the distance from the Jacobs 31-20, there was minimal wake affect on the Jacobs during testing. This resulted in the test turbine at Station 8 not being classified as an obstacle during power performance testing. Page 6 of 55

7 6.0 Test Equipment Table 2 below shows the equipment that was used during the duration testing of the Jacobs Serial numbers and instrument calibration details are also provided in the table. All instruments were properly calibrated according to the Standards for the entire testing period for the duration test. Calibration certificates are included in Appendix C. Description Manufacturer Model Serial No Calibration Calibration Date Due Primary Anemometer Adolf Thies GmbH Sep Sep-2012 Reference Anemometer Adolf Thies GmbH Sep Sep-2012 Wind Vane Adolf Thies GmbH Aug Aug-2012 Pressure Sensor Vaisala Oy PTB330 F Aug Aug-2012 Temperature/RH Sensor Adolf Thies GmbH * Aug Aug-2012 Power Transducer Ohio Semitronics DMT-1040EY40 A333** 24-Oct Oct-2012 Current Transformer Ohio Semitronics A333** 24-Oct Oct-2012 *Model # differs on calibration certificate; the model # listed in this table is correct **Intertek calibration database Asset #; PT and CT calibrated as a system Table 2 Equipment used in the power performance test The meteorological equipment utilized during this test program is in compliance with the IEC Wind turbines Part 12-1: Power performance measurements of electricity producing wind turbines. A National Instruments cdaq-9178 backplane and NI /- 20 ma 8-channel current module were used for logging the output signals from the sensors in Table 2 above. A proprietary LabVIEW program was used to collect and filter data that is stored in raw and 1 Hz data files on the Intertek RTC site computer. The data acquisition system is located inside the Intertek RTC control building; all signals are measured at this location. This is also the location of the turbine disconnect and grid-tie inverter, and thus is also where power measurements are made. The data is stored on two separate computers at the Intertek RTC, and is also stored in the Intertek project file. The power measurement equipment is located inside the control building at an approximate wire run length of 91.4 meters (300 feet); which satisfies the required wire run length in the Standard. Page 7 of 55

8 Figure 3 displays the arrangement of the meteorological tower with dimensions of instrument locations. The height above ground level to the centerline of the cups of the primary anemometer of meters is the same height above ground level as the hub height of the Jacobs The reference anemometer and the wind vane are installed at the same height of m, and the temperature and pressure sensors are installed at the same height of 21.5 m. Figure 3 - Meteorological tower and instrument locations Page 8 of 55

9 7.0 Test Procedure The general method applied during this test program directly follows the method described in IEC with additional guidance from IEC Annex D. The first part of the test program was to review the control and protection system functions listed below. 1. Power control 2. Rotor speed control 3. Yaw system control 4. Loss of load a. Response to grid outage b. Response to grid overvoltage 5. Over speed protection at design wind speed (11.9 m/s) 6. Start-up a. Normal operation wind speed greater than cut-in b. After maintenance or fault clearance at design wind speed or greater 7. Normal shutdown a. Normal operation wind speed decreasing from cut-in 8. Emergency shutdown a. Emergency stop in wind speeds less than design wind speed b. Emergency stop at design wind speed or greater 9. Excessive vibration The second part of the test procedure was to evaluate provisions for personnel safety. 1. Safety instructions a. Safety instructions must be available for everybody working or operating at the site b. Safety instructions must cover installation, operation, and maintenance activities 2. Electrical and grounding system 3. Presence and functioning of rotor lock and yaw lock Page 9 of 55

10 8.0 Uncertainty An uncertainty analysis was not performed for the purpose of this Test Report. Raw data is used in some cases to display the proper functioning of control and protection systems. Where raw data is used, the uncertainty lies largely in the uncertainty of the measurement equipment and data acquisition system. Uncertainties for the equipment used for the measurement of meteorological and output power data are shown on the calibration certificates in Appendix C of this report. Where observations and test results are used to display the proper functioning of control and protection systems no additional uncertainty analysis was performed. This is due to the fact that uncertainty analysis was previously performed in the determination of the test results, and can be found in their respective test reports. 9.0 Results 9.1 Control and Protection System Functions The Jacobs did not show signs of unsafe behavior that could result in failure or cause of injury. The extent of testing is limited to single fault conditions meaning the system may not be safe under all conditions; judgments are not made on such potential failures Power Control The wind turbine system shows signs of power control built into the design through centrifugal pitch control. Based on the 1-minute maximum power output statistics from the power performance test, seen in Figure 4; as wind speed increased above 18 m/s the maximum power remained limited near the ~20.5 kw maximum output of the inverter. The inverter also has a built in diversion load for helping to control the power further. The power electronics in the Jacobs system are fully capable of handling the maximum power output from the turbine. The inverter utilizes the diversion load for any power in excess of ~20.5 kw. The combination of the power electronics and the power limitation through passive pitch control, as well as the furling of the turbine observed in high wind speeds shows adequate power control of the Jacobs system. Figure 4 Jacobs minute power statistics according to the first edition of IEC , Annex H Page 10 of 55

11 9.1.2 Rotor Speed Control Visual observation confirms rotor speed control at high winds. The passive centrifugal pitch control via the governor at the hub ensures that the turbine is not overloaded as wind speeds increase above design wind speed. Once the blades reach maximum pitch, passive stall takes over to further ensure the rotor does not go into overspeed. The turbine also furls in periods of high wind speeds. The turbine is also designed to run unloaded safely, and this was witnessed in wind speeds near 25 m/s on the day of commissioning. When running unloaded the turbine still utilizes passive pitch, passive stall, and furling to limit rotational speed. The turbine typically only runs unloaded when the grid is out. In periods of high wind the aerodynamic noise is considerably loud Yaw System Control The yaw system is passive with no mechanical control. The distance to the large tail vane (~1 m 2 ) allows the tail to perform its primary functions adequately. The yaw system is conservative and protects the system from overspeed adequately. The turbine was observed to furl in high wind, and turbulent wind, conditions to continue to limit rotor speed. During dynamic observations for the Duration Test, the turbine was observed to track the wind similarly with the wind direction vane on the meteorological tower. Obviously due to mass and rotational inertia, the speed of response differed from the wind direction vane, but the turbine appeared to track the wind appropriately Loss of Load In the event of a grid outage or abnormal voltage occurrence, the system inverter will act appropriately as it has been certified to the UL 1741 Standard for Inverters, Converters, Controllers and Interconnection System Equipment for Use with Distributed Energy Resources. Intertek did not verify this for purposes of Safety and Function Testing because of the UL 1741 Listing of the WTIC grid-tie inverter. However, during the Duration Test there were observations of several occurrences of grid outages in the Duration Test data. When the load is lost, the inverter disconnects from the grid, and the turbine is allowed to spin unloaded. The inverter continues to monitor the grid voltage and frequency, as well as the turbine voltage, to enable the turbine to export power as soon as the grid is back online Over Speed Protection at Design Wind Speed The Jacobs is pursuing certification as a class II system. Table 1 in IEC declares a velocity average, V avg, of 8.5 m/s for all class II systems. Design wind speed is defined as 1.4 times the velocity average, 8.5 m/s. Therefore, the design wind speed is equal to 11.9 m/s. According to the 1-minute power performance data produced during the power performance test, and shown in Figure 4 of this report, the Jacobs has adequate over speed protection at design wind speed. This is observed by the limitation of both power and rotational speed at wind speeds in excess of 12 m/s, and is described in sections and above. Page 11 of 55

12 9.1.6 Start-up Figure 5 below displays the Jacobs wind turbine in the off state during background measurements for acoustic testing of the test turbine at Station 8, and in the on state after the brake was released in wind speeds greater than cut-in. The brake was released at wind speeds near 11.5 m/s and power production increased to around 12.5 kw. While in the off state, and with the brake applied, the Jacobs remains still. When the brake is released, the turbine idles until the wind speed increases to above cut-in. In the scenario shown in Figure 5 below, there was no idle period, as the wind speeds were well above cut-in. Figure 5 Turbine start-up at wind speeds greater than cut-in and design wind speed The event displayed in Figure 5 occurred at a wind speed equivalent to design wind speed thus also satisfies the condition of start-up after maintenance or fault condition in design wind speeds. When the winds are below cut-in and there is no mechanical brake applied to the system, the turbine idles until the wind speeds increase to above cut-in. Page 12 of 55

13 9.1.7 Normal Shutdown Figure 6 below displays the Jacobs in normal operation in wind speeds above cut-in, and as the wind speed decreases to below cut-in the turbine transitioning to the off state. In this scenario, the Jacobs remains idle until wind speeds increase high enough to generate power Emergency Shutdown Figure 6 Turbine shut-down at wind speeds decreasing below cut-in The Jacobs does not come equipped with an emergency stop button, nor is their a procedure provided for stopping the turbine in wind speeds in excess of 12 m/s. The Jacobs also does not have a cut-out wind speed, and is designed to operate in extreme winds. Refer to above for additional detail. However, there were several occurrences where the Jacobs had to be parked in wind speeds above design wind speed. In order to safely bring the turbine to a stop, Intertek personnel would stand at the base of the tower where the hand crank for the mechanical shaft brake is located. In periods of high turbulent wind, the Jacobs yaws frequently to protect the rotor from overspeed. As the turbine yaws, and turns out of the wind, the rotor slows significantly and the brake can easily be applied to stop the turbine. When the lock is applied to the crank, the rotor on the Jacobs remains stationary until it is released Excessive Vibration Vibration monitoring equipment was not incorporated into the test program. However, on multiple days during dynamic observations the vibration of the turbine and tower were observed. On several occasions the tail was observed shaking and wobbling in the wind. The vibration was not deemed excessive due to lack of evidence in the post-test inspection of excessive fatigue on the tail vane, but Intertek did suggest WTIC revisit the number of fasteners used to secure the tail vane. The tower vibrations were also observed in wind speeds ranging from cutin to 20 m/s. Tower vibrations were considered normal. Page 13 of 55

14 9.2 Safety Provisions Safety Instructions An installation manual was provided with the Jacobs wind turbine. Within the installation manual are sections devoted to safety for personnel and required personal protective equipment. The assembly and installation procedures are adequately covered in the manual. However, Intertek has requested that the Jacobs manual be revised to better cover safety, operation, and maintenance as the manual was moderately out of date Electrical and Grounding System In various sections within the installation manual warnings of electrical loads and potentially dangerous electrical situations are mentioned. Grounding is adequately described in the wiring diagram in Appendix A, and the turbine was installed according to this diagram Presence and function of rotor-lock The functioning of the mechanical braking system was described in above. When the brake is applied the rotor is held at a complete standstill and does not rotate, even in wind speeds in excess of design wind speed. Maintenance procedures for the Jacobs cover the fact that the brake pads on the shaft brake need to be replaced when they are worn. Page 14 of 55

15 Appendix The following sections can be found within this Appendix: A Wiring diagrams B Pictures of the test site C Calibration certificates D Commissioning checklists Page 15 of 55

16 A Wiring Diagrams A.1 Typical wiring diagram for Jacobs Page 16 of 55

17 A.2 Block diagram of Jacobs setup at Intertek RTC Page 17 of 55

18 B Pictures of the test site B.1 North Page 18 of 55

19 B.2 Northwest Page 19 of 55

20 B.3 West Page 20 of 55

21 B.4 Southwest Page 21 of 55

22 B.5 South, and meteorological tower Page 22 of 55

23 B.6 Southeast Page 23 of 55

24 B.7 East Page 24 of 55

25 B.8 Northeast Page 25 of 55

26 C Calibration certificates C.1 Primary anemometer Page 26 of 55

27 Page 27 of 55

28 Page 28 of 55

29 Page 29 of 55

30 Page 30 of 55

31 C.2 Secondary anemometer Page 31 of 55

32 Page 32 of 55

33 Page 33 of 55

34 Page 34 of 55

35 Page 35 of 55

36 C.3 Wind vane Page 36 of 55

37 Page 37 of 55

38 Page 38 of 55

39 Page 39 of 55

40 C.4 Barometric pressure sensor Page 40 of 55

41 Page 41 of 55

42 C.5 Temperature/RH sensor Page 42 of 55

43 Page 43 of 55

44 C.6 Power measurement system Page 44 of 55

45 Page 45 of 55

46 C.7 Post-test primary anemometer calibration Page 46 of 55

47 Page 47 of 55

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51 D Commissioning checklists This section provides the minimum content requirements for the turbine commissioning plan and associated checklists. D.1 Overview The commissioning checklists can be thought of as a compilation of multiple individual checklists that must all be complete before the test can begin. The major sub-checklists in the commissioning process are outlined below: Procedures and documentation Safety checklist Turbine checklist Data acquisition system checklist Special care should be taken on any specific safety devices and locking mechanisms. D.2 Procedures and documentation checklist This section is used for establishment of protocols with an emphasis on safety. Jacobs Test Station 5 Engineer Joseph Spossey Date October 3, 2011 Item Compliant? Comment Expected power curve data provided by manufacturer yes Located in Intertek project file Wiring diagrams provided by manufacturer yes Located in Intertek project file Project documentation posted and available to Intertek personnel yes Located in Intertek project file Manufacturer provided commissioning checklist No None provided D.3 Safety checklist Safety is a primary concern during the test and several actions should be taken to ensure the test is conducted as safely as possible. Jacobs Test Station 5 Engineer Joseph Spossey Date October 3, 2011 Item Compliant? Comment Locks on building door yes Only Intertek personnel allowed access Hazard zone established yes Located in Intertek project file 911 Emergency Services aware of test location yes Located in Intertek project file Fire extinguisher on site yes Located in site building First aid kit on site yes Located in site building Building kept clean and free from debris and unnecessary obstructions yes Clean Site clean and clear from debris yes Clean Page 51 of 55

52 D.4 Turbine checklist Jacobs Test Station 5 Engineer Joseph Spossey Date November 1, 2011 Item Compliant? Comment 1. Commissioning Background Commissioning can begin after the tower and turbine have been erected and all wiring tasks have been completed according to specification. A commissioning checklist was not provided to Intertek by Wind Turbine Industries. At the time of the installation, a final version of the operations manual had not been provided. After all wiring was confirmed by the installer of the Jacobs 31-20, commissioning mainly consisted of verification of power export to the grid and successful operation of the brake and disconnects. 2. Commissioning Sequence and Checklist Ensure turbine brake is engaged and locked, turbine disconnect at tower base is open, inverter disconnect is open, breaker in yes Performed by installer Intertek sub panel open. Recheck all tower and wind turbine fasteners. yes Performed by installer Recheck all wiring connections. yes Performed by installer Wind speeds should be light to moderate. yes Wind speed hovering near 10 m/s Close breaker in Intertek sub panel yes Verified Disengage both disconnects (at inverter and tower base). yes Verified Disengage brake; verify rotation of rotor blades. yes Upon release of brake, rotor began spinning immediately. Visual observation of approximately 100 rpm verified. Observe (visual and audible) rotor rotation for obvious issues yes No issues Verify inverter power on, and begin 5 minute countdown for grid monitoring and turbine output sensing Verify export of power to grid Engage brake to verify function yes yes Verified After 5 minute countdown the contactors in the inverter engaged and power began exporting to the grid. As wind gusts occurred, power reached near rated power (20000 W). Inverter display for power output was within 5% of the value observed on data acquisition display as measured by the power transducer. Brake engaged in winds of approximately 12 m/s. Turbine stopped easily and, once the brake was fully engaged, no rotation was observed. Release brake, verify export of power to grid yes Verified Continue observation yes Yes Observe operation of turbine and system for 20 minutes to ensure proper operation. Page 52 of 55

53 D.5 Data acquisition system checklist Jacobs Test Station 5 Engineer Joseph Spossey Date October 3, 2011 Item Compliant? Comment Height to centre of rotor; hub height n/a Hub height = m ( ft) Meteorological tower vertical within 2 yes Verifie d Primary anemometer Type and serial number verified against test equipment list yes Equipment verified in the field Instrument calibrated yes Calibration sheets on file Calibration date acceptable yes Range acceptable for test Vertical boom level within ± 2 of tower yes Verifi ed Instrument in same plane as vertical boom yes Verified Height to centre of cups, above ground level yes m ( ft) Signal verified from instrument output to DAQ yes 4, 12, and 20 ma signals injected at instrument connection point with Fluke 741B process Calibrator Data cables secure yes Cables secured down dower, through conduit, to field board, and through conduit to data shed Secondary anemometer Type and serial number verified against test equipment list yes Equipment verified in the field Instrument calibrated yes Calibration sheets on file Calibration date acceptable yes Range acceptable for test Horizontal boom 90 to tower yes Verified Vertical boom level within ± 2 of tower yes Verifi ed Instrument in same plane as vertical boom yes Verified Height to centre of cups, above ground level yes m ( ft) Signal verified from instrument output to DAQ yes 4, 12, and 20 ma signals injected at instrument connection point with Fluke 741B process Calibrator Data cables secure yes Cables secured down dower, through conduit, to field board, and through conduit to data shed Wind direction transmitter Type and serial number verified against test equipment list yes Equipment verified in the field Instrument calibrated yes Calibration sheets on file Calibration date acceptable Yes Range acceptable for test Horizontal boom 90 to tower yes Verified Vertical boom level within ± 2 of tower yes Verifi ed Instrument in same plane as vertical boom yes Verified Height to horizontal axis of rotation, above ground level yes m ( ft) Page 53 of 55

54 Signal verified from instrument output to DAQ Data cables secure yes yes 4, 12, and 20 ma signals injected at instrument connection point with Fluke 741B process Calibrator Cables secured down dower, through conduit, to field board, and through conduit to data shed Temperature/Humidity sensory Type and serial number verified against test equipment list yes Equipment verified in the field Instrument calibrated yes Calibration sheets on file Calibration date acceptable yes Range acceptable for test Horizontal boom 90 to tower yes Verified Vertical boom level within ± 2 of tower yes Verifi ed Instrument in same plane as vertical boom yes Verified Height to instrument, above ground level yes 21.5 m (70.54 ft) Thermal radiation shield utilized yes Verified Signal verified from instrument output to DAQ yes 4, 12, and 20 ma signals injected at instrument connection point at tower junction box with Fluke 741B process Calibrator Data cables secure yes Cables secured down dower, through conduit, to field board, and through conduit to data shed Barometric pressure transducer Type and serial number verified against test equipment list yes Equipment verified in the field Instrument calibrated yes Calibration sheets on file Calibration date acceptable yes Range acceptable for test Horizontal boom 90 to tower yes Verified Vertical boom level within ± 2 of tower yes Verifi ed Instrument in same plane as vertical boom yes Verified Height to center of instrument, above ground level yes 21.5 m (70.54 ft) Signal verified from instrument output to DAQ yes 4, 12, and 20 ma signals injected at instrument connection point with Fluke 741B process Calibrator Data cables secure yes Cables secured down dower, through conduit, to field board, and through conduit to data shed Down tower junction box Secured to field board yes Down tower box installed at the base of tower and conduit extended to field board box Supplied power yes Supplied through conduit to field board Grounded properly yes Proper enclosure ground utilized Data cables secure yes Cables run through conduit to data shed from field board. Power and signal cables are in individual dedicated conduit. Page 54 of 55

55 Power transducer Type and serial number verified against test equipment list yes Equipment verified in the field Instrument calibrated yes Calibration sheet on file Calibration date acceptable yes Range acceptable for test Installed after inverter yes Verified Installed with CT matching test equipment list yes Verified Data cables secure yes Cables routed safety/securely inside control building Data acquisition system (DAS) All signals verified yes 4, 12, and 20 ma signals injected at instrument connection point with Fluke 741B process Calibrator All signals acceptable yes No signal losses observed All signals recorded yes Signals read were identical to injected signal. Page 55 of 55