<.elastimoldOThomaslalettsR&D Center497 Schooley's Mountain RoadHackettstown, NJ 07840-3906Tel: 908-852-1122 Fax: 908-813-2091

TEST REPORT NUMBER: #372-17 -12010 DATE: 2-22-12

REPORT OF TEST ONElastimold Molded Vacuum Reclosers (MVRs)

Statements made and data shown are, to the best of our knowledge and belief,correct and within the usual limits of commercial testing practices.

Prepared by 7;~1Approved byDan Gardner

17dL~Title

.Project Leader TitleDirector of Engineering,P.E.

This information is transmitted subject to the following understanding and agreement: Byacceptance of this document you agree that all rights to the information contained herein, as wellas the proprietary novel features of the subject matter are reserved by Thomas and BettsCorporation and that devices embodying such features or information derived from thesedisclosures will not be manufactured by or for you, or disclosed to others without our expresswritten consent. This test report and other information are and remain the property of Thomasand Betts Corporation and are not to be copied, reproduced or disclosed to others without ourexpress written consent.

Test Report No. #372-17-12010

ADMINISTRATIVE DATA

1.0 Purpose of Test Certification of the Elastimold 15/27/38kV MoldedVacuum Reclosers (MVRs)

2.0

Manufacturer Thomas & Betts - Elastimold

3.0

Type, Part or Model No. MVRx-xx-xx-xx

4.0

Drawing, Specification or Exhibit3188C0110, 3188C0111, 3188C0112, 3188C0113,3188C0114, 3188C0115,3188C0116

5.0

Quantity or Items Tested Various - refer to specific subsection

6.0

Security Classification of ItemsN/A

7.0

Date(s) Test(s) Conducted Various 2009 - 2012

8.0

Place(s) Test(s) Conducted Powertech Labs, BC I Lapem Labs, MX IThomas&Betts R&D Center, NJ

9.0

Disposition of Specimens N/A

10.0 References

IEEE C37.60-2003, IEC 62217

11.0 Report Distribution

EXTERNAL USE

Page 2 of 10

Test Report No. #372-17-12010

SECTION 6.2 Insulation (dielectric) tests

Purpose:To demonstrate dry power frequency withstand capability, wet power frequencywithstand capability, and lightning impulse withstand capability.

Test Procedure:Testing was conducted in accordance with IEEE C37.60 - 2003 Section 6.2.

Each dry power frequency withstand test was performed at 60Hz at 60kVrms for 1minute on a 15/27kV MVR and at 70kVrms for 1 minute on a 38kV MVR.

Each wet power frequency withstand test was performed at 60Hz at 50kVrms for1Osec on a 15/27kV MVR and at 60kVrms for 1Osec on a 38kV MVR.

Each lightning impulse withstand test was performed at 150kV pk on a 15/27kVMVR and at 170kV pk on a 38kV MVR.

Results:All testing was successful. Both the 15/27kV and the 38kV units withstoodvoltage in all configurations for all tests.

Conclusion:The 15/27kV MVR meets the requirements of dry and wet power frequencywithstand capability per IEEE C37.60-2003 Section 6.2.

The 38kV MVR meets the requirements of dry and wet power frequencywithstand capability per IEEE C37.60-2003 Section 6.2.

The 15/27kV MVR exceeds the lightning impulse withstand capabilityrequirement specified in IEEE C37.60-2003 Section 6.2.

The 38kV MVR exceeds the lightning impulse withstand capability requirementspecified in IEEE C37.60-2003 Section 6.2.

Certified and approved by: 4Tests performed at ThomasBSetts R&D Center, Hackettstown, NJRef #923-5-1201 0

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Test Report No. #372-17-12010

SECTIONS 6.3/6.4/6.5

Switching, Making Current Capability, and Rated SymmetricalInterrupting Current Tests

Purpose:To demonstrate load switching, fault making current capability, and operatingduty tests.

Test Procedure:Testing was conducted in accordance with IEEE C37.60 - 2003 Sections 6.3,6.4, and 6.5.

Each unit tested was installed in accordance with the standard and operated witha SEL 651 R control at Powertech Labs.

The 15/27kV unit was tested as a single phase device at 29.3kV with a loadswitching rating of 800A and a maximum symmetrical fault interrupting rating of12.5kA.

The 38kV unit was tested as a three phase device at 38kV with a load switchingrating of 800A and a maximum symmetrical fault interrupting rating of 12.5kA.

The reclose sequence for all tests was O-CO-CO-CO using the fastest sequencesettings allowed on the SEL 651 R with the first shot using the instantaneous trip"A" curve and the remaining operations on the delayed operation "c" curve.

Results:All testing was successful. Both the 15/27kV and the 38kV units passed all testsaccording to the standard.

The 15/27kV testing is documented on Powertech Test Report #20089-26. The38kV testing is documented on Powertech Test Report #20492-26.

Conclusion:The 15/27kV MVR meets the requirements of a single phase recloser with acontinuous current rating of 800A and a rated maximum symmetrical interruptingcurrent of 12.5kA per IEEE C37.60-2003 Sections 6.3,6.4, and 6.5.

The 38kV MVR meets the requirements of a three phase recloser with acontinuous current rating of 800A and a rated maximum symmetrical interruptingcurrent of 12.5kA per IEEE C37.60-2003 Sections 6.3, 6.4, and 6.5.

Certified and approved by: ~I q~Tests performed at Powertech Labs, Surrey, BCRef #20089-26 and #20492-26

Page 4 of 10

Test Report No. #372-17-12010

SECTIONS 6.6 & 6.11 Minimum Tripping and Time-Current Tests

Purpose:To demonstrate the minimum tripping current and the time-current curveaccuracy of the Elastimold MVR with the SEL controls.

Test Procedure:Testing was conducted in accordance with IEEE C37.60 - 2003 Sections 6.6and 6.11 using a SEL 351 RS-Kestrel control.

Minimum tripping level on the SEL 351 R-Kestrel control was set to 50A. Currentwas injected into the recloser starting at 80% of the trip level and ramping slowlyover a period greater than 1Osec and the trip level was recorded.

Minimum tripping level was then changed to 500A and the delayed operationcurve "C" was selected. This allowed verification of the tripping curve over thefull range of currents. Time-current curve accuracy was tested at a variety ofcurrents between 50A and 12.5kA by injecting current into the recloser andmonitoring the tripping time.

Results:

Minimum trip values recorded all fell within the +/-10% requirement of thestandard.

All time-current trip curve tests resulted in a trip initiation within +/-10% of thepublished SEL curve.

Conclusion:

The Elastimold MVR, when controlled by a SEL control, meets the ratedminimum tripping current requirement and the time-current requirement per IEEEC37.60-2003 Sections 6.6 and 6.11.

Certified and approved by: , /Z1MTests performed at Thomas & Betts R&D Center, Hackettstown, NJRef #925-5-12010

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Test Report No. #372-17-12010

SECTION 6.7 Partial Discharge (Corona) tests

Purpose:To demonstrate partial discharge test capability of the Elastimold MVR.

Test Procedure:Testing was conducted in accordance with IEEE C37.60 - 2003 Section 6.7.

Tests were performed in three configurations on a 15/27kV unit and a 38kV unit:1. Contacts closed and energized with the housing grounded.2. Contacts open with the side terminal energized and the top terminal and

the housing grounded.3. Contacts open with the top terminal energized and the side terminal and

housing grounded.

The maximum LN voltage was applied for at least 30sec (VLN MAX). Then eachunit was stressed for at least 60 sec at an elevated voltage (VSTRESS).Then thevoltage was dropped to 105% VLN MAX and the partial discharge value wasrecorded.

Results:For 15/27kV units:VLN MAX = 16.9kV, VSTRESS= 34kV, 115% VLN MAX = 17.8kV

Observed pC values were less than 3pC in all configurations.

For 38kV units:VLN MAX = 21.9kV, VSTRESS= 40kV, 115% VLN MAX = 23kV

Observed pC values were less than 3pC in all configurations.

Conclusion:Partial discharge results were deemed acceptable as all values observed at105% VLN MAX were less than 60pC after stressing the units.

Certified and approved by: ~jtt NTests performed at Thomas & eUs R&D Center, Hackettstown, NJRef #926-5-1201 0

Page 6 of 10

Test Report No. #372-17-12010

SECTION 6.10 Temperature Rise tests

Purpose:To demonstrate that the Elastimold MVR is capable of carrying 800A continuouscurrent.

Test Procedure:Testing was conducted in accordance with IEEE C37.60 - 2003 Section 6.10.

Testing was performed using 1000kcmil bare copper conductor.

Current was injected into a unit and component temperatures were allowed toreach steady state. Contact temperatures were measured at four locations: topcontact of the vacuum bottle, bottom contact of the vacuum bottle, top terminallug, side terminal lug. The ambient temperature was also measured.

Results:Ambient = 25C

Top contact of vacuum bottle = 92.4C (67.4C rise)Bottom contact of vacuum bottle = 83.2C (58.2C rise)Top Terminal = 78.2C (53.2C rise)Side Terminal = 76.5C (51.5C rise)

Terminal to terminal resistance was also recorded at the end of the test at 102.11J0hms.

Conclusion:Max allowable temperature rise for the bottle contacts was 75C. Max allowabletemperature rise for the terminals was 65C. All temperature readings andresistance readings were within limits showing that the Elastimold MVR iscapable of carrying 800A continuously.

Certified and approved by: '- /'14Tests performed at Thomas & Betts R&D Center, Hackettstown, NJRef #927-5-12010

Page 7 of 10

Test Report No. #372-17-12010

SECTION 6.12 Mechanical Duty tests

Purpose:To demonstrate the mechanical durability of the Elastimold MVR.

Test Procedure:Testing was conducted in accordance with IEEE C37.60 - 2003 Section 6.12.

An Elastimold MVR was cycled using a SEL 351 RS-Kestrel control and a PLCbased cycling circuit. The cycling circuit was set to initiate an operation every 10sec.

10,000 close-open operations were performed. Resistance readings were takenbefore and after the cycling.

Upon completion of the test, the recloser was examined for loosening ordegradation of parts. The unit was also hi-potted for 60 sec.

Results:No loosening of parts or substantial degradation of components was observedduring or after the test.

Terminal to terminal resistance prior to the test was 93jJohms. After the test theresistance was 117jJohms.

The unit also successfully passed hi-pot testing at 60kVrms for 60sec.

Conclusion:The Elastimold MVR exceeds the requirements set in the standard formechanical duty testing.

Certified and approved by: ~ JL(Tests performed at Thomas & etts R&D Center, Hackettstown, NJRef #928-5-1201 0

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Test Report No. #372-17-12010

SECTION 6.13 Surge Withstand Capability (SWC) tests

Purpose:To demonstrate the oscillatory and fast transient surge withstand capability andto demonstrate the simulated surge arrester operation withstand capability of theElastimold MVR and the SEL 351 RS-Kestrel and SEL 651 R controls.

Test Procedure:Testing was conducted in accordance with IEEE C37.60 - 2003 Section 6.13 atPowertech Labs.

All units were tested as 38kV devices. Testing was performed on the ElastimoldMVR with each type of control specified above per the standard.

Results:

The Elastimold MVR and the SEL 351 RS-Kestrel operated normally after thetesting. Detailed results can be found in detail in Powertech Test Report#20414-27.

The Elastimold MVR and the SEL 651 R operated normally after the testing.Detailed results can be found in detail in Powertech Test Report #20414-27.

Conclusion:The Elastimold MVR meets the requirements of the standard when used with theSEL 351 RS-Kestrel and the SEL 651 R controls.

Certified and approved by: ~ MTests performed at Powertech abs, Surrey, BCRef #20414-27

Page 9 of 10

Test Report No. #372-17-12010

OTHER UV/Weathering tests

Purpose:To evaluate the UV/weatherability of Elastimold's 370 silicone and 935 EPDMcompounds in accelerated aging tests and to demonstrate their trackingresistance via salt fog testing.

Test Procedure:

Samples of the 935 and 370 materials were prepared and exposed to varyingamounts of UV radiation, heat, water spray, and humidity for varying time periodsup to 1000 hours. Field aged samples were also placed and evaluated.Physical properties and/or electrical properties of these materials were testedbefore and after the aging cycles and the results compared.

Salt fog testing was performed at Powertech per IEC 62217 on 38kV MVRmodules. The sample was run for 1600hrs with the bottle contacts closed andenergized at 22kV and the housing grounded.

Results:Weathering characteristics of both the 935 EPDM High Voltage insulation andthe 370 Silicone High Voltage insulation compounds passed field andaccelerated aging tests. Water submersion and UV testing showed nosignificant loss in dielectric strength for either material. Both of these materialshave been used extensively in products placed in the field for many years, andexperience in manufacturing products with these materials confirms that a longoutdoor service life is expected from parts produced from these compounds.Both materials have superior performance versus a control EPDM sample.

The unit that was salt fog tested successfully passed 1,600hr testing as detailedin Powertech Labs Test Report #20472-27.

Conclusion:The Elastimold MVR is suitable for extended outdoor use and shows goodUV/weatherability characteristics when the side terminal, the top shed, and thebottom shed are made from Elastimold 370 and the main body is made ofElastimold 935 EPDM. The MVR also meets salt fog requirements for 1600hrsat 22kV as specified in IEC 62217.

~11fCertified and approved by: .

Tests performed at Powerte tabs, Surrey, BC at the Thomas & Betts R&D CenterRef #253-12-11356 and #20472-27

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