TRF No.: IECEN60529A

TRF No.: IECEN60529A

TEST REPORT IEC 60529

Degrees of Protection Provided by Enclosures = Ingress of Water

Report Reference No. ...........................: 30972623.001

Tested by (name + signature) .................: Uwe Meyer

Approved by (name + signature).............: Ricardo Felix

Date of issue...........................................: September 18th, 2009

Testing Laboratory ...............................: TUV Rheinland of North America, Inc

Address...................................................: 12 Commerce Road, Newtown, CT 06470, U.S.A.

Testing location / address .......................: 1819 Aston Avenue, Suite 103, Carlsbad, CA 92008, U.S.A.

Applicant’s name ..................................: SouthWest Windpower

Address...................................................: 1801 West Route 66, Flagstaff, AZ 86001

Test specification:

Standard .................................................: IEC 60529: 1989-11 + A1:1999 EN 60529 :1991-10 (incl. Corrigendum: 1993-05 ) + A1: 2000-02

Test procedure........................................: --

Non-standard test method…………..: N/A

Test Report Form No. ...........................: IEC60529

TRF Originator ........................................: TUV Rheinland of North America, Inc.

Master TRF.............................................: Dated 2008-02

Test item description............................: Wind Turbine

Trade Mark .............................................:

Manufacturer...........................................: SouthWest Windpower

1801 West Route 66, Flagstaff, AZ 86001

Model and/or Type reference..................: Skystream 3.7

Rating(s) .................................................: See labels next page

Report Reference No.: 30972623.001.

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Copy of marking plate:


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General Product information:

The Skystream 3.7 is a wind powered electricity generator containing an integral AC power inverter. It is designed to supplement the electrical power provided by the local electrical utility company in residential applications by connecting directly to the main AC utility.

Summary of testing:

The Skystream 3.7 turbine (without the blades) was tested according to IEC60529, category ‘IPX6’. The purpose of testing was to verify the conformance of the sample to the before mentioned category. In addition a hipot (dielectric strength-) requested by the customer was performed prior and after the rain test between the electrical connection (Line / Neutral) and metal enclosure of the turbine.

The test sample was mounted on a pole as shown in the photographs at the end of this report. The IPX6 test apparatus was adjusted as per clause 14.2.6 of IEC 60529 and the surfaces were sprayed from all practicable directions for a total testing time of 4 min. The sample then was checked for dielectric strength between the electrical connection and enclosure of the turbine (PE-GND connection) for one minute with passing results

After the dielectric strength test the sample was opened for inspection and no water intrusion was noted.


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Particulars: test item vs. test requirements Equipment mobility ..................................... : fixed / permanent connection Operating condition ..................................... : continuous Mains supply tolerance (%)......................... : Not specified Class of equipment ..................................... : Class I Mass of equipment (kg)............................... : approx. 77kg Protection against ingress of water ............ : IPX6

Testing

Date of receipt of test item ......................... : September 14th, 2009

Date(s) of performance of test ................... : September 17th, 2009

The following Attachments are integral part of this test report:

• Photographs of Test Set-up / Testing ( see page 8 [f.f] of this report )

• Verification of Test Nozzle

• Calibration Certificate of Hipot Tester


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Test set-up: The test sample was set-up outside the building of TUV Rheinland of North America,

Carlsbad Office, on a parking lot (leveled); the test was performed with TUV Rheinland’s Rain Tester using the equipment for category IPX6-testing (2 bins filled with water [total: 200l ], water pump [gas driven], nozzle [12.5 mm dia] with flow meter); The testing was performed in two sessions (2 x 200l for 2 min each session). After the first session the two water bins were refilled and the testing arrangement was adjusted to better cover the three remaining sides of the sample. The time between the first and the second session was approx. 10 min. The water jet hose nozzle was hold in a distance of 2.5 to 3.0m during the test, all sides of the test samples were tested for a total time of 4 min. (2 sessions of 2 min. each), adjusting the water flow rate to 100l +/- 5%. The reading on the flow meter was verified before the testing by filling a 5 Gallon bucket (18.9l) within 10.8 – 11.9 seconds.

(For Photographs of test set-up / testing refer to last page)

Result: After the rain test a Hipot test (1.000Vac for basic insulation) was performed. Then the test sample was carefully opened. No evidence of water / water drops was found on the gasket of the hatchcover and inside the unit. The inside of the turbine with all electrical components was carefully checked. The test was deemed passed.

*) For IPX6-testing the gas driven pump was adjusted to show a water flow of approx. 95 to 100 l/min. A 5Gal-bucket (18.75l) was filled with water and the time was measured to be within 10.8 and 11.9s. The test was repeated 5 times to get an average. This procedure confirms the flowrate of ~100l/min. **) The hipot test voltage and leakage current during the testing was verified with two digital multimeters for better and more accurate readings:

Hipot test prior rain test for verification purpose [5sec]

Hipot test after rain test

Hipot voltage at input wiring of turbine

1.025Vac 1.025Vac [60sec]

Leakage current for ‘passing’ condition

28mA 28mA

Equipment Manufacturer Model Serial # Last Calibration Cal. Due Rain Tester TUV Rheinland Rain Tester -- -- Not necessary *) Flow Meter Lake Monitors 0 – 35 LPM -- -- Not necessary *) Flow Meter Lake Monitors VRB-DB-30

[0 – 110 LPM] -- -- Not necessary *)

Hipot Tester High Voltage Inc. PFT-303CM 041 07/14/2009 07/14/2010 **) Multimeter Fluke 187 87240190 12/10/2008 12/10/2009 Multimeter Fluke 87V 97870144 01/19/2009 01/19/2010


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The degree of protection provided by an enclosure is indicated by the IP Code in the following way:

For Example I P 2 3 C H

IP = Code Letters (International Protection)

First Characteristic Numeral = numerals 0 to 6, or letter X

Second Characteristic Numeral = numerals 0 to 8, or letter X

Additional Letter (optional) = letters A, B, C, D

Supplementary Letter (optional) = letters H, M, S, W


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Photographs of Test Set-up / Testing

[hipot test prior rain testing]


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Rain Test


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[cont.] rain test


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after rain test

Originally some tape was used to hold the turbine in place but later was replaced by bungee straps attached to a pallet


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[cont.] after rain test


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Hipot Test after Rain Test:

Readings show 1030Vac / 28.3mA at the beginning of the 1min. hipot test


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Visual check after rain test / opening the hatchcover:


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[cont.] Visual check after rain test / opening the hatchcover:


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Documents

TRF No.: IECEN60529A