T1_Oil_Analysis_2012.pdf

TRANSFORMER

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Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com

Report# 110319 HMT, Inc. Received 01/19/2012 Date February 02, 2012

Serial Number: 51304B Equipment Number: T1 Substation Name: USAF - Nellis Preservation System: Gas Blanketed

Design Type: Core Type Transformer Name: T1 Manufacturer: NA Transformer Type: Transformer

MFR. Year: 1992 Maximum kV: 69 Cooling System: OA/FA/FA Maximum MVA: 20

Fluid Type: Mineral XFMR Oil Capacity: 4060 Gallons

Container ld: LAB ASSIGNED# 1245 Phase:

Miscellaneous ld: Ambient Temp oc: 10

Second Name: 8469-12009-RP01 I USAF-Nellis AFB Humidity:

Sample Point: Main Tank Bottom Top Oil Temp oc: 40

Sequence#: Peak Temp oc:

Sample Date/By: 1/17/2012 Fluid Level:

Appr Type: XFMR Pressure PSI:

LTC MFR./Model: LTC Type: Break-In-Oil LTC Tank Type : Sealed LTC Capacity: 150 Gallons Filter LTC:

Dissolved Gas Analysis The dissolved gas analysis is run in accordance with ASTM D 3612 and IEC 60567. Values are reported in ppm vol/vol at STP and calibrated with gas-in-oil standards.

Values before August 15, 2002 are reported at NTP and calibrated with gas standards.

Sample

Top Oil

Hydrogen

Oxygen

Nitrogen

Methane

Carbon Monox.

Ethane

Dioxide

Ethylene

Acetylene

COMB

ESTTCG

C2H4/

Comb Gas

Report# Date Temp oc (H2) (02) (N2) (CH4) (CO) (C2H6) (C02) (C2H4) (C2H2) Total Gas GAS % C2H2 Rate ppm/day

110319 01/17/2012 40 0 67 82500 62 28 72 888 4.5 0 83622 166 0.05 0.00 0.02

102923 02/25/2011 20 0 50 70500 58 24 71 528 6.6 0 71238 160 0.05 0.00 0.38

102273 01/04/2011 35 0 50 56300 52 21 60 474 6.6 0 56964 140 0.05 0.00 0.43

101036 11/05/2010 45 3.1 50 68800 35 49 20 437 7.0 0 69401 114 0.08 0.00 0.68

99713 09/09/2010 30 0 84 93200 12 44 18 2120 1.3 0 95479 75 0.04 0.00 0.02

93667 10/15/2009 40 3.2 52 78000 7.7 40 16 1900 1.7 0 80021 69 0.05 0.00 There is a low volume of combustible gas present. The condition is of no immediate concern. It is recommended to resample in 1 year for units 69kV and below.

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Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com

Report# 110319 HMT, Inc. Received 01/19/2012 Date February 02, 2012

Serial Number: 51304B Substation Name: USAF - Nellis

Design Type: Core Type

Equipment Number: T1 (Cont'd) Preservation System: Gas Blanketed

Transformer Name: T1

Container ld: LAB ASSIGNED# 1245 Miscellaneous ld:

Second Name: 8469-12009-RP01 I USAF-Nellis AFB

Phase:

Ambient Temp oc: 10

Humidity:

Manufacturer: NA

MFR. Year: 1992 Transformer Type: Transformer

Maximum kV: 69 Sample Point: Main Tank Bottom Sequence#:

Top Oil Temp oc: 40 Peak Temp oc:

Cooling System: OA/FA/FA Maximum MVA: 20 Sample Date/By: 1/17/2012 Fluid Level:

Fluid Type: Mineral XFMR Oil Capacity: 4060 Gallons Appr Type: XFMR Pressure PSI:

LTC MFR./Model: LTC Type: Break-In-Oil LTC Tank Type: Sealed LTC Capacity: 150 Gallons Filter LTC:

Oil Quality Tests

Report#

Date

Top Oil Temp oc

Water Content

Relative Saturation

Color

Diel D877

Interfacial Tension

Neut. No.

Specific Gravity

Visual ppm % kV mN/m mgKOH/g 60/60 01533

IEC 60814

01500

D877A

ISO 6295

01298

01524 110319 01/17/2012 40 5 4 L0.5 57 40 < 0.01 0.889 Clear & Bright-Fine Particles 102923 02/25/2011 20 5 9 L 1.5 47 36 <0.01 0.888 Clear & Bright-Many Particles 102273 01/04/2011 35 4 4 L 1.0 55 36 < 0.01 0.888 Clear & Bright 101036 11/05/2010 45 27 19 L 0.5 50 35 0.01 0.887 Clear & Bright 99713 09/09/2010 30 11 13 L 1.0 28 34 <0.01 0.887 Clear & Bright-Few Particles 93667 10/15/2009 40 8 7 0.5 51 33 < 0.01 0.891 Clear & Bright-Fine Particles

The dryness rating of this insulation system (solid and liquid insulation) is considered to be in excellent condition and corresponds to a cellulose water content of 0.5% or less. A system in this condition will minimalize the aging of the cellulosic insulation, reduce the risk of water vapor bubble formation, and allow higher overload capabilities. The results indicate that the dielectric liquid is acceptable for continued in-

Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com

Report# 111738 HMT, Inc. Received 03/23/2012 Date April 02, 2012

Serial Number: 513048 Equipment Number: T1 Substation Name: USAF - Nellis Preservation System: Gas Blanketed

Design Type: Core Type Transformer Name: T1 Manufacturer: NA Transformer Type: Transformer

MFR. Year: 1992 Maximum kV: 69 Cooling System: OA/FA/FA Maximum MVA: 20 LTC Fluid Type: Mineral XFMR Oil Capacity: 4060 Gallons

Container ld: IAB577, 6757 Phase:

Miscellaneous ld: Ambient Temp •c: 4

Second Name: 8469-12009-01 / Nellis A.F.B. Humidity: 28 Sample Point: LTC Top Oil Temp ·c: 40

Sequence#: Peak Temp ·c:

Sample Date/By: 3/12/2012 KB Fluid Level:

Appr Type: LTC Pressure PSI:

LTC MFR./Model: LTC Type: Break-In-Oil LTC Tank Type: Sealed LTC Capacity: 150 Gallons Filter LTC:

Dissolved Gas Analysis The dissolved gas analysis is run in accordance with ASTM D 3612 and IEC 60567. Values are reported in ppm vol/vol at STP and calibrated with gas-in-oil standards.

Values before August 15, 2002 are reported at NTP and calibrated with gas standards.

Top Oil

Hydrogen

Oxygen

Nitrogen

Methane

Monox.

Ethane

Dioxide

Ethylene

Acetylene

COMB

ESTTCG

C2H4/

Comb Gas

Report# Date Temp •c (H2) (02) (N2) (CH4) (CO) (C2H6) (C02) (C2H4) (C2H2) Total Gas GAS % C2H2 Rate ppm/day

111738 03/12/2012 40 13 21700 55200 10 46 5.8 517 31 84 77607 190 0.11 0.37 -1.22

110319 01/17/2012 40 4.7 29100 59600 17 15 26 700 85 109 89657 257 0.05 0.78 -40.64 102923 02/25/2011 20 93 24600 68300 2380 70 2620 904 8270 72 107309 13505 1.66 114.86 123.71

102273 01/04/2011 35 189 13700 56200 1620 125 853 1070 4180 105 78042 7072 1.71 39.81 114.57

101036 11/05/2010 22 50 69700 43 107 12 609 2.9 11 70557 198 0.19 0.26 -98.49

99713 09/09/2010 30 196 20500 60300 1360 454 1850 1980 1840 112 88592 5812 1.67 16.43 16.78

93667 10/15/2009 40 38 24300 55100 11 93 1.5 601 20 126 80290 290 0.23 0.16 LTC Condition Code 5- Condition is of no immediate concern. Resample 1 year if loaded below nameplate rating, 4-6 months if loaded above nameplate ratings.

Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com

Report # 111738 HMT, Inc. Received 03/23/2012 Date April 02, 2012

Serial Number: 51304B Equipment Number: T1 (Cont'd) Container ld: IAB577, 6757 Phase:

Substation Name: USAF - Nellis Preservation System: Gas Blanketed Miscellaneous ld: Reconfirming Previous Results Ambient Temp ·c: 4

Design Type: Core Type Transformer Name: T1 Second Name: 8469-12009-01 I Nellis A.F.B. Humidity: 28 Manufacturer: NA Transformer Type: Transformer Sample Point: LTC Top Oil Temp •c: 40

MFR. Year: 1992 Maximum kV: 69 Sequence#: Peak Temp ·c:

Cooling System: OA/FA/FA Maximum MVA: 20 Sample Date/By: 3/12/2012 KB Fluid Level:

LTC Fluid Type: Mineral XFMR Oil Capacity: 4060 Gallons Appr Type: LTC Pressure PSI:

LTC MFR./Model: LTC Type: eak-ln-Oil _ LTC Tank Type: Sealed Oil Quality Tests

LTC Capacity: 150 Gallons Filter LTC:

Std. Fed Power

Sample Top Oil Water Relative Interfacial Factor Specific Report# Date Temp •c Content Saturation Color Diel D877 Tension Neut. No. 25•c Gravity Visual ppm % kV mN/m mgKOH/g % 60/60

D1533 D9711SO

IEC 60814 D1500 D877 6295 D974 D924 D1298 D1524

111738 03/12/2012 40 14 12 L2.5 50 23 0.07 0.889 Cloudy with Particles 110319 01/17/2012 40 13 11 42 O.D7 102923 02/25/2011 20 16 29 L 2.0 47 26 0.03 0.888 Clear & Bright-Many Particles 102273 01/04/2011 35 30 30 L 1.5 53 28 0.02 0.888 Carbon Visible 101036 11/05/2010 49 L0.5 56 33 0.01 0.887 Clear & Bright 99713 09/09/2010 30 45 54 27 0.26 93667 10/15/2009 40 17 14 37 0.25

The results indicate that the dielectric liquid is acceptable for continued in-service use.