Attachment_6_-_Transformer_inspection_report.pdf

olvo

Environmental Chemical Corporation O&M

1600 Falmouth Rd, Suite 40 Centerville, MA 02632

Transformer Testing At

Windmill Station AFCEE/Army – Otis MMR

Sagamore, MA

December 2012

Tested by CEG Field Services, Inc.

Engineering Consulting Field Services C E G

Providing Support and Service to the Power Industry

One Charlesview Road Hopedale, MA 01747 Phone: 508.634.5300 Fax: 508.634.5400 www.cegconsulting.com

TABLE OF CONTENTS

1 Project Overview Page 3

2 Equipment Inspected and Tested Page 3

3 Test Procedures Page 4

4 Electrical Testing Summary Page 5

5 Data Sheets Page 5

1 Project Overview

1.1 This report details the electrical maintenance testing performed at the facility for the power distribution equipment.

1.2 The equipment and components listed in Section 2 of this report have been inspected and tested to help assure their proper and safe operation. Defective or marginal equipment will be identified, repaired, replaced, or scheduled for future repairs without costly or unexpected interruptions during normal operating periods.

1.3 The test results are particularly valuable when kept for comparison with past and future maintenance test results. This historic database enables one to predict the probability of equipment failure and thus schedule facility production and financial budgets to accommodate preventive maintenance or repair rather than breakdown maintenance.

1.4 Bill Morrison of ECC O&M initiated this project. CEG Field Services, Inc. personnel performed electrical maintenance testing of designated electrical equipment.

1.5 Please refer to Section 4 “Electrical Testing Summary” for a summary of the test results.

2 Equipment Tested and Inspected

2.1 Transformers

1. Main Transformer

2. Wind Turbine 1 GSU

3. Wind Turbine 2 GSU

2.2 Air Break Switches

1. Air Break Switch Wind Turbine 1

2. Air Break Switch Wind Turbine 2

3 Test Procedures

3.1 TRANSFORMER

3.1.1 MECHANICAL MAINTENANCE

.1 Visually inspect transformer.

.2 Record all nameplate data.

.3 Inspect anchorage, alignment, and grounding.

3.1.2 ELECTRICAL TESTS

.1 Measure insulation resistance, winding-to-winding and winding to ground.

Calculate polarization index.

.2 Perform turns-ratio test at the designated tap position.

.3 Perform excitation-current test in accordance with test equipment manufacturer’s published data.

.4 Obtain an oil sample and send it to Double Engineering for analysis.

3.2 FUSED DISCONNECT SWITCHES

3.2.1 Visual and Mechanical Inspection

1. Inspect physical and mechanical condition.

2. Inspect anchorage, alignment, grounding, and required clearances.

3. Clean the unit.

4. Perform mechanical operator tests in accordance with manufacturer's published data, if applicable.

5. Verify correct blade alignment, blade penetration, travel stops, arc interrupter operation, and mechanical operation.

6. Inspect insulating assemblies for evidence of physical damage or contaminated surfaces.

7. Verify that fuse holder has adequate mechanical support and contact integrity, if applicable.

8. Verify that fuse sizes and types correspond to drawings, if applicable.

9. Test all electrical and mechanical interlock systems for correct operation and sequencing.

10. Inspect bolted electrical connections for high resistance using one of the following methods:

1. Use of low-resistance ohmmeter.

11. Lubrication requirements:

1. Verify appropriate lubrication on moving current-carrying parts.

2. Verify appropriate lubrication on moving and sliding surfaces.

3.2.2 Electrical Tests

1. Perform resistance measurements through bolted connections with a low-resistance ohmmeter.

2. Perform a contact/pole-resistance test.

3. Perform insulation-resistance tests on each pole, phase-to-phase and phase-to-ground with switch closed and across each open pole for one minute. Test voltage shall be in accordance with manufacturer's published data.

4 Electrical Testing Summary

4.1 The Main Transformer was tested for insulation resistance and turns ratio; also an oil sample was obtained and sent to Doble Engineering for analysis. After review of the test data and the oil sample report the main transformer yielded satisfactory results.

*Recommendations- Upon further inspection CEG recommend changing all the ½ hardware that was used to bolt the paddles to the primary and secondary side of the transformer. It was found that all the hardware used on the transformer had been over tightened and some of the nuts seem to be the wrong thread pattern. The technicians had to cut 6 bolts apart to perform the above testing. The technicians counted approximately 100 stainless steel nuts and bolts that should be changed and torque to manufactures specifications.

4.2 The GSU Transformers for Turbine 1 and 2 were tested for insulation resistance and turns ratio; also an oil sample was obtained and sent to Doble Engineering for analysis. After review of the test data and the oil sample reports the GSU transformers yielded satisfactory results.

4.3 The Air Break Switches for Turbine 1 and 2 were tested for insulation resistance and contact resistance. After review of the test data the air break switches yielded satisfactory results.

5 Data Sheets

5.1 Transformers

1. Main Transformer

2. Wind Turbine 1 GSU

3. Wind Turbine 2 GSU

5.2 Air Break Switches

3. Air Break Switch Wind Turbine 1

4. Air Break Switch Wind Turbine 2

G

Providing Support and Service to the Power Industry

Transformer Maintenance Test Report

Customer: ECC O&M Date: 12/12/12 Address: 1600 Falmouth Rd, Suite, Centerville, MA 02632 Customer Rep.: Bill Morrison Substation: AFC EE Main Substation Tested By: MB/MR Circuit ID: Windpower

TRANSFORMER NAMEPLATE DATA

Manufacturer: Virginia KVA: 7500 Cycles: 60 Serial #: 487500A033-B550A Phase: 3 Type: Station Primary Disc. Type: Circuit Switcher Disconnect Rating: N/A Class: ONAN Primary Voltage: 115,000 Rated Current: 37.7A Capacity: 2998 Gallons Secondary Voltage: 22900 Rated Current: 189A Impedance: 7.27% Insulation Type: Type II Oil Oil Level: Normal @ 25°C Tank Pressure: .5 psi Tap Setting: 3=115kV Temp. Rise: 65°C Humidity: 22% Liquid Temperature: 17°C Winding Temperature: N/A Ambient Temp: 1°C Max. Liquid Temp: 58°C Max. Winding Temp: N/A Catalog #: N/A Date of Manufacture: 05/2011 Fuse: N/A Fuse Type: N/A

ELECTRICAL TESTS

Dielectric Absorption Test in Gigohms (MΩ) 1 min. 2 min. 3 min. 4 min. 5 min. 6 min. 7 min. 8 min. 9 min. 10 min. P.I.

Pri /Gnd @ 10 kVDC 12.9 14.1 18.9 21.0 22.6 23.9 26.4 27.9 29.3 30.4 2.42 Sec/Gnd @ 1 kVDC * * * * * * * * * * * Pri / Sec @ 10 kVDC 24.5 26.1 28.7 31.0 32.0 33.1 34.9 36.2 37.0 38.4 1.57

Turns Ratio Test Name Plate

Primary Voltage Tap Position Connections Calculated

Ratio Measured Ratio Excitation Current

(mA)

H H X X

115,000 3 H 0 H 1 X 0 X 1

5.021

5.0289 .77

H 0 H 2 X 0 X 2 5.0271 .98 H 0 H 3 X 0 X 3 5.0293 .65

VISUAL INSPECTION AND MAINTENANCE

Connections: Acceptable Bushings: Acceptable Paint: Acceptable Grounding: Acceptable Leaks: Acceptable Safety Factor: Acceptable Controls: Acceptable Tap Changer: Acceptable Fans: Acceptable

NOTES

The test results are satisfactory.

*This test could not be performed due to XO of the transformer windings is internally bonded.

Report # 124354 Received 12/13/2012 Date

Phase: 3

Fluid Level:

Filter LTC:

Report # Sample

Date Top Oil

Temp °C Hydrogen

(H2) Oxygen

(O2) Nitrogen

(N2) Methane

(CH4)

Carbon Monox.

(CO)

Ethane (C2H6)

Carbon Dioxide

(CO2)

Ethylene

(C2H4) Acetylene

(C2H2) Total Gas

COMB

GAS

EST TCG

C2H4/ C2H2

Comb Gas Rate /d

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.

Design Type:

Appr Type: Pressure PSI:

7.5 2998 GallonsMineral

Second Name:

Sequence #:

Cooling System:

Serial Number: 487500A033B550A Substation Name: Gas Blanketed

Maximum kV:

Core Type

XFMR Oil Capacity:

Maximum MVA:

LTC Tank Type :

Sample Date/By:

XFMR

LTC Capacity:

12/12/2012 10:00

LTC MFR./Model:

Fluid Type:

Manufacturer:

MFR. Year: Peak Temp °C:

LTC Type:

AFC EE Sub

VT

Main Transformer

Preservation System:

Transformer Name:

Transformer Type: Main Tank Bottom

Ambient Temp °C:

Container Id:

Miscellaneous Id:

Humidity:

Top Oil Temp °C: Sample Point:

Otis Base

Together We Power The World

Sample # 1 December 14, 2012

LAB ASSIGNED # 04366

Consulting Engineers Group, Inc.

Equipment Number: MAIN ppm/day 124354 12/12/2012 32 0 13700 82800 1.9 57 0 850 0.5 0 97409 59 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. First-time analysis assumes unit has operated continuously under normal conditions for the last year, otherwise resample in 1 month to determine trend.

Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com Page 1 of 2

Report # 124354 Received 12/13/2012 Date Sample # 1 December 14, 2012Consulting Engineers Group, Inc.

Report # Sample

Date Top Oil

Temp °C Water

Content Relative

Saturation Color D1816- 1mm

Interfacial Tension Neut. No. PF25C PF 100C

Specific Gravity

(Rel.

Density) Visual ppm % kV mN/m mgKOH/g % % 60/60 D1533

IEC 60814 D1500 D1816

D971 ISO

6295 D974 D924 D924 D1298 D1524

124354 12/12/2012 32 4 4 L 0.5 32 42 < 0.01 0.017 0.398 0.887 Clear & Bright

Oil Quality Tests

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. Dielectric Breakdown Voltage is acceptable for in-service fluid.

Interfacial Tension and Neutralization Number are acceptable for continued use in-service.

Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com Page 2 of 2

Substation: AFC EE Substation Tested By: MB/MR Circuit ID: Wind turbine 1

TRANSFORMER NAMEPLATE DATA

Manufacturer: Howard KVA: 1750 Cycles: 60 Serial #: 2486583311 Phase: 3 Type: GSU Primary Disc. Type: Air Switch Disconnect Rating: N/A Class: OA Primary Voltage: 22900V Rated Current: N/A Capacity: 421Gallons Secondary Voltage: 690V Rated Current: N/A Impedance: 5.40% Insulation Type: Type II Oil Oil Level: Normal @ 25°C Tank Pressure: .1 psi Tap Setting: C Temp. Rise: 65°C Humidity: 22% Liquid Temperature: 17°C Winding Temperature: N/A Ambient Temp: 1°C Max. Liquid Temp: 58°C Max. Winding Temp: N/A Catalog #: N/A Date of Manufacture: 08/2011 Fuse: N/A Fuse Type: N/A

ELECTRICAL TESTS

Dielectric Absorption Test in Gigohms (MΩ) 1 min. 2 min. 3 min. 4 min. 5 min. 6 min. 7 min. 8 min. 9 min. 10 min. P.I.

Pri /Gnd @ 10 kVDC 66.4 70.1 80.5 87.4 92.0 98.1 102 110 116 120 1.80 Sec/Gnd @ 1 kVDC 130 141 169 183 201 211 219 256 271 283 2.17 Pri / Sec @ 10 kVDC 106 138 149 160 172 180 186 195 197 203 1.90

Turns Ratio Test Name Plate

Primary Voltage Tap Position Connections Calculated

Ratio Measured Ratio

22,900 3 H 0 H 1 X 0 X 1

57.537

57.575 .66

H 0 H 2 X 0 X 2 57.566 .72 H 0 H 3 X 0 X 3 57.540 .81

VISUAL INSPECTION AND MAINTENANCE

Connections: Acceptable Bushings: Acceptable Paint: Acceptable Grounding: Acceptable Leaks: Acceptable Safety Factor: Acceptable Controls: Acceptable Tap Changer: Acceptable Fans: Acceptable

NOTES

Report # 124354 Received 12/13/2012 Date

Fluid Level:

Filter LTC:

Report # Sample

Date Top Oil

Temp °C Hydrogen

(H2) Oxygen

(O2) Nitrogen

(N2) Methane

(CH4)

Carbon Monox.

(CO)

Ethane (C2H6)

Carbon Dioxide

(CO2)

Ethylene

(C2H4) Acetylene

(C2H2) Total Gas

COMB

GAS

EST TCG

C2H4/ C2H2

Comb Gas Rate /d

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.

Design Type:

Appr Type: Pressure PSI:

1.15 421 GallonsMineral

Second Name:

Sequence #:

Cooling System:

Serial Number: 2486583311 Substation Name: Free Breathing

Maximum kV:

Core Type

XFMR Oil Capacity:

Maximum MVA:

LTC Tank Type :

Sample Date/By:

XFMR

LTC Capacity:

12/12/2012 1:30:00 PM MB

LTC MFR./Model:

Fluid Type:

Manufacturer:

MFR. Year: Peak Temp °C:

LTC Type:

Main

How Turbine 1 Transformer

Preservation System:

Transformer Name:

Transformer Type: Main Tank Bottom

Ambient Temp °C:

Container Id:

Miscellaneous Id:

Humidity:

Top Oil Temp °C: Sample Point:

Otis Base Otis

Together We Power The World

Sample # 3 December 14, 2012

IAB 815

Consulting Engineers Group, Inc.

Equipment Number: TURBINE 1 ppm/day 124354 12/12/2012 18 6.9 10800 69600 9.3 128 1.4 637 6.3 0 81189 152 0.15 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. First-time analysis assumes unit has operated continuously under normal conditions for the last year, otherwise resample in 1 month to determine trend.

Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com Page 1 of 2

Report # 124354 Received 12/13/2012 Date Sample # 3 December 14, 2012Consulting Engineers Group, Inc.

Sample

Date Top Oil

Temp °C Water

Content Relative

Saturation Color D1816- 1mm

Interfacial Tension Neut. No. PF25C PF 100C

Specific Gravity

(Rel.

Density) Visual ppm % kV mN/m mgKOH/g % % 60/60 D1533

IEC 60814 D1500 D1816

D971 ISO

6295 D974 D924 D924 D1298 D1524

124354 12/12/2012 18 3 6 L 0.5 25 41 0.01 0.017 0.253 0.891

Clear & Bright-

Few Particles

Oil Quality Tests

The water content is considered acceptable for this voltage class. Dielectric Breakdown Voltage is acceptable for transformers <= 288 KV. Interfacial Tension and Neutralization Number are acceptable for continued use in-service.

Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com Page 2 of 2

Medium Voltage Fused Air Switch

Address: 1600 Falmouth Rd, Centerville ,MA 02632 Customer Rep.: Bill Morrison Location: Wind turbine 1 Tested By: MB/MR Circuit ID: Main Disconnect Wind turbine 1

FUSED AIR SWITCH NAMEPLATE DATA

Manufacturer: Federal Pacific Rated Voltage: 27kV Switch Type: Air Jet II System Voltage: 23kV Serial #: J16086-1 Closing Voltage: N/A Frame Size: 600A Tripping Voltage: N/A Tank Presure: N/A Charging Voltage: N/A Date of Manufacture: 8/11 Counter: As found: N/A As left: N/A Mechanism Type: Charging Spring Humidity: 45% Fuses: TCC 153-2 SMU-20 Ambient Temp °C: 18%

ELECTRICAL TESTS

Phase A Phase B Phase C

Contact Resistance In MicroOhms (µΩ) @ 100 Amps.: 90 110 100

Insulation Resistance In GigOhms (GΩ) @ 10 k v dc

Switch Closed Line to Ground (A-Gr, B-Gr, C-Gr): 625 699 636 Switch Closed Line to Line (A-B, B-C, C-A): 736 901 688 Open Line to Load (A-A, B-B, C-C): 279 360 420

Vacuum Integrity Test (Pass or Fail) @ k v ac Switch Open Load Side Grounded: N/A N/A N/A

VISUAL INSPECTION AND MAINTENANCE

Circuit Identification: N/A Shunt Trip Operation: N/A Primary Disconnects: Acceptable Mechanical Operation: Acceptable Phase Barriers: Acceptable Lubrication: Acceptable Racking Device: Acceptable Contact Condition: Acceptable Mechanism: Acceptable Compartment: Acceptable Trip Mechanism: N/A Interlocks: Acceptable Gas pressure: N/A Cleanliness: Acceptable Bolted Connections: Acceptable Protective Relay Operation: N/A

Test results are satisfactory.

Customer: ECC O&M Date: 12/13/12

Substation: AFC EE Substation Tested By: MB/MR Circuit ID: Wind turbine 2

TRANSFORMER NAMEPLATE DATA

Manufacturer: Howard KVA: 1750 Cycles: 60 Serial #: 2544843411 Phase: 3 Type: GSU Primary Disc. Type: Air Switch Disconnect Rating: N/A Class: OA Primary Voltage: 22900V Rated Current: N/A Capacity: 458Gallons Secondary Voltage: 690/398 Rated Current: N/A Impedance: 5.40% Insulation Type: Type II Oil Oil Level: Normal @ 25°C Tank Pressure: .2 psi Tap Setting: C Temp. Rise: 65°C Humidity: 22% Liquid Temperature: 17°C Winding Temperature: N/A Ambient Temp: 1°C Max. Liquid Temp: 58°C Max. Winding Temp: N/A Catalog #: N/A Date of Manufacture: 08/2011 Fuse: N/A Fuse Type: N/A

ELECTRICAL TESTS

Dielectric Absorption Test in Gigohms (MΩ) 1 min. 2 min. 3 min. 4 min. 5 min. 6 min. 7 min. 8 min. 9 min. 10 min. P.I.

Pri /Gnd @ 10 kVDC 31.3 38.6 45.2 53.2 59.3 64.1 71.1 77.6 80.6 85.1 2.69 Sec/Gnd @ 1 kVDC 100 110 117 201 208 211 214 217 222 229 2.29 Pri / Sec @ 10 kVDC 58.1 66.7 75.2 82.7 88.1 94.1 97.2 99.6 107 110 1.89

Turns Ratio Test Name Plate

Primary Voltage Tap Position Connections Calculated

Ratio Measured Ratio

22,900 3 H 0 H 1 X 0 X 1

57.537

57.561 .66

H 0 H 2 X 0 X 2 57.562 .72 H 0 H 3 X 0 X 3 57.564 .81

VISUAL INSPECTION AND MAINTENANCE

Connections: Acceptable Bushings: Acceptable Paint: Acceptable Grounding: Acceptable Leaks: Acceptable Safety Factor: Acceptable Controls: Acceptable Tap Changer: Acceptable Fans: Acceptable

Report # 124379 Received 12/14/2012 Date

Fluid Level:

Filter LTC:

Report # Sample

Date Top Oil

Temp °C Hydrogen

(H2) Oxygen

(O2) Nitrogen

(N2) Methane

(CH4)

Carbon Monox.

(CO)

Ethane (C2H6)

Carbon Dioxide

(CO2)

Ethylene

(C2H4) Acetylene

(C2H2) Total Gas

COMB

GAS

EST TCG

C2H4/ C2H2

Comb Gas Rate /d

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.

Pressure PSI:

LTC MFR./Model: LTC Type: LTC Tank Type : LTC Capacity:

Fluid Type: Mineral XFMR Oil Capacity: Appr Type: XFMR

Peak Temp °C:

Cooling System: Maximum MVA: 1.75 Sample Date/By:

Top Oil Temp °C:

Design Type: Core Type

12/13/2012 11:00:00 AM MB

MFR. Year: 2011 Maximum kV: 23 Sequence #:

Manufacturer: How Transformer Type: Transformer Sample Point: Main Tank Bottom

Substation Name: Preservation System: Gas Blanketed Miscellaneous Id:

Humidity:

2544843411 Equipment Number:

Transformer Name: TURBINE 2 Second Name:

LAB ASSIGNED # 4104Container Id:

Otis Base Ambient Temp °C:

Together We Power The World

Sample # 1 Consulting Engineers Group, Inc. December 18, 2012

Serial Number:

ppm/day 124379 12/13/2012 19 5.3 9130 66600 11 135 2.8 695 11 0 76590 165 0.16 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.

Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com Page 1 of 2

Report # 124379 Received 12/14/2012 Date Sample # 1 Consulting Engineers Group, Inc. December 18, 2012

Sample

Date Top Oil

Temp °C Water

Content Relative

Saturation Color Diel D877 D1816- 1mm

Interfacial Tension Neut. No. Pour Pt PF25C PF 100C

Specific Gravity

(Rel.

Density)

Viscosity @ 40°C

Inhibitor Content Visual ppm % kV kV mN/m mgKOH/g °C % % 60/60 mm2/s (cSt) %

D1533

IEC 60814 D1500 D877 D1816

D971 ISO

6295 D974

D97 ISO

3016 D924 D924 D1298

D445 ISO

3104 D2668 D1524

124379 12/13/2012 19 2 4 L 0.5 48 28 42 0.01 < -40 0.020 0.486 0.891 9.67 0.295

Clear & Bright- Many

Particles

R t # Sample

D t Top Oil

T °C Viscosity (S b lt)

Oil Quality Tests

The water content is considered acceptable for this voltage class. Dielectric Breakdown Voltage is acceptable for in-service fluid. Power factors, Interfacial Tension and Neutralization Number are acceptable for continued use in-service.

Additional Oil Quality Tests

Report # Date Temp °C (Saybolt)

SUS

D2161 124379 12/13/2012 19 57.7

Report # Sample

Date Top Oil

Temp °C

PCB

Content Aroclor

Detected ppm

D4059 124379 12/13/2012 19 < 2

Miscellaneous Tests PCB Analysis is conducted under the provisions listed in Doble's certification with the Department of Environmental Protection for the Commonwealth of Massachusetts.

Our Lab ID is M-MA131.

This sample is considered to be 'Non-PCB' ( <50 ppm) per EPA regulations listed in 40 CFR part 761.

Doble Engineering Company 85 Walnut Street Watertown, MA 02472 USA Tel. 617-926-4900 Fax. 617-926-0528 http://www.doble.com Page 2 of 2

Medium Voltage Fused Air Switch

Address: 1600 Falmouth Rd, Centerville ,MA 02632 Customer Rep.: Bill Morrison Location: Wind turbine 1 Tested By: MB/MR Circuit ID: Main Disconnect Wind turbine 2

FUSED AIR SWITCH NAMEPLATE DATA

Manufacturer: Federal Pacific Rated Voltage: 27kV Switch Type: Air Jet II System Voltage: 23kV Serial #: J16086-1 Closing Voltage: N/A Frame Size: 600A Tripping Voltage: N/A Tank Presure: N/A Charging Voltage: N/A Date of Manufacture: 8/11 Counter: As found: N/A As left: N/A Mechanism Type: Charging Spring Humidity: 45% Fuses #: TCC 153-2 SMU-20 Ambient Temp °C: 5°C:

ELECTRICAL TESTS

Phase A Phase B Phase C

Contact Resistance In MicroOhms (µΩ) @ 100 Amps.: 91 101 77

Insulation Resistance In GigOhms (GΩ) @ 10 k v dc

Switch Closed Line to Ground (A-Gr, B-Gr, C-Gr): 862 709 687 Switch Closed Line to Line (A-B, B-C, C-A): 631 704 632 Open Line to Load (A-A, B-B, C-C): 600 536 598

Vacuum Integrity Test (Pass or Fail) @ k v ac Switch Open Load Side Grounded: N/A N/A N/A

VISUAL INSPECTION AND MAINTENANCE

Circuit Identification: N/A Shunt Trip Operation: N/A Primary Disconnects: Acceptable Mechanical Operation: Acceptable Phase Barriers: Acceptable Lubrication: Acceptable Racking Device: Acceptable Contact Condition: Acceptable Mechanism: Acceptable Compartment: Acceptable Trip Mechanism: N/A Interlocks: Acceptable Gas pressure: Acceptable Cleanliness: Acceptable Bolted Connections: Acceptable Protective Relay Operation: N/A

Test results are satisfactory.