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Text version

Prepared By:

Chris Espartero Sr Field Service Representative

North America Service Operations

Houston, TX

USS-L Substation PM

April 28, 2021

Work Order: 08391081

2 | P a g e

EXECUTIVE SUMMARY

Schneider Electric Services perform Transformer and Switchboard PM in accordance with project specification and applicable industry standard on USS-L Substation located at VA loading duct tunnel 2002 Holcombe Blvd Houston, Texas 77030. The site contact for this project was Joe

Ceasar of VA Medical Center Electrical Power Distribution Department (713)806-7506.

USS-L Spare breaker contact resistance test is higher than the recommended value of 200 micro-

Ohms.

If there are any questions or concerns, please contact:

Chris Espartero

832-205-1547

Christopher.Espartero@se.com

USS-L_42640529-001-01-1_XD

Report Source DryTypeTransformer 4/27/2021 10:19:02 PMSession Test Date

Nameplate Company VA Medical Center Serial Number 42640529-001-01-1 Location 2002 Holcombe Blvd Houston, Texas Special ID USS-L

77030 Division Houston Circuit Designation USS-L Manufacturer Square D Electric Class Year Manufactured 0 Type DryTypeTransformer Mfr Location USA Winding Insulation Open-Wound Coolant Select Coolant Weight 5400 LB Tank Type Select Tank Type BIL 60 kV Dry Tank Type Ventilated VA Rating 500 kV 12.47,0.48,* Insulation Material Nomex

Administration Test Date 4/27/2021 Test Time: 10:19 PM Weather Indoors Air Temperature 20°C Apparatus * Humidity 30 %

Temperature Tester C.Espartero Work Order Date Last Tested Verified Test Set Type M4000 Date Retested Verification Date 4/27/2021 Set Top Serial # Reason ROUTINE Last Sheet # Set Bottom Serial # Travel Time Purchase Order Ins. Book # Duration Copies Sheet # Crew Size 1

Bushing Nameplate Designation Serial # Manufacturer Type C1 %PF C1 Cap C2 %PF C2 Cap Rated kV Amps

H1 H1 * * * * * * H2 H2 * * * * * * H3 H3 * * * * * *

42640529-001-01-1 1 - 4

Overall Tests - 2K

Overall Tests - LG

42640529-001-01-1 2 - 4

# Insulation

CH+CHL

CH

CHL(UST)

CHL

CL+CHL

CL

CHL(UST)

CHL

Test kV mA

Watts

% PF Meas.

Cap (pF)

IR Man.

LSR

LSR

LSR

LSR

LSR

LSR

LSR

LSR

mA: */*, 1/1 mA: */*, 1/1 mA: */*, 1/1 mA: */*, 1/1 mA: */*, 1/1 mA: */*, 1/1 mA: */*, 1/1 mA: */*, 1/1

Watts: */*, 1/1 Watts: */*, 1/1 Watts: */*, 1/1 Watts: */*, 1/1 Watts: */*, 1/1 Watts: */*, 1/1 Watts: */*, 1/1 Watts: */*, 1/1

Cap (pF): */*, 1/1 Cap (pF): */*, 1/1 Cap (pF): */*, 1/1 Cap (pF): */*, 1/1 Cap (pF): */*, 1/1 Cap (pF): */*, 1/1 Cap (pF): */*, 1/1 Cap (pF): */*, 1/1

# Insulation

CH+CHL

CH

CHL(UST)

CHL

CL+CHL

CL

CHL(UST)

CHL

Test kV 10.004 10.004 10.004

1.000 1.000 1.000 mA Watts 8.022 0.224 0.798 0.799 0.945 0.152 0.782 0.794

% PF Meas.

2.683 2.711 2.674 2.675 1.236 0.325 2.620 2.659

Cap (pF) 1010.469 218.816 791.663 791.652 2028.797 1237.297 792.022 791.500

Tip UP

FRANK IR Man.

Good Good Good Good Good Good Good Good

3.811 0.825 2.985 2.985 7.649 4.665 2.987 2.984

LSR

LSR

LSR

LSR

LSR

LSR

LSR

LSR

mA: 3.811/3.811, 1/1 mA: 0.825/0.825, 1/1 mA: 2.985/2.985, 1/1 mA: 2.985/2.985, 1/1 mA: 7.649/7.649, 1/1 mA: 4.665/4.665, 1/1 mA: 2.987/2.987, 1/1 mA: 2.984/2.984, 1/1

Watts: 1.022/1.022, 1/1 Watts: 0.224/0.224, 1/1 Watts: 0.798/0.798, 1/1 Watts: 0.799/0.799, 1/1 Watts: 0.945/0.945, 1/1 Watts: 0.152/0.152, 1/1 Watts: 0.782/0.782, 1/1 Watts: 0.794/0.794, 1/1

Cap (pF): 1010.469/1010.469, 1/1 Cap (pF): 218.816/218.816, 1/1 Cap (pF): 791.663/791.663, 1/1 Cap (pF): 791.652/791.652, 1/1 Cap (pF): 2028.797/2028.797, 1/1 Cap (pF): 1237.297/1237.297, 1/1 Cap (pF): 792.022/792.022, 1/1 Cap (pF): 791.500/791.500, 1/1

Δ-

LSR mA: 38.189/38.189, 1/1 Watts: 303.878/303.878, 1/1 Cap (pF): */*, 1/1 LSR mA: 40.401/40.401, 1/1 Watts: 318.921/318.921, 1/1 Cap (pF): */*, 1/1 LSR mA: 19.004/19.004, 1/1 Watts: 146.139/146.139, 1/1 Cap (pF): */*, 1/1

USS-L_42640529-001-01-1_XD

Winding Resistance

Winding Manufacturer Serial Number Configuration Winding Temperature Factory Factory

Temperature Rise Resistance Temperature (Ohms)

Y * * * *

High Voltage DETC LTC Phase Resistance Units Calculated Correction Corrected Percentage

Resistance Factor Resistance Deviation 3 A 323.9 milli Ohms * * * * 3 B 322.4 milli Ohms * * * * 3 C 321.5 milli Ohms * * * *

Low Voltage DETC LTC Phase Resistance Units Calculated Correction Corrected Percentage

Resistance Factor Resistance Deviation 3 A 868 micro Ohms * * * * 3 B 871 micro Ohms * * * * 3 C 879 micro Ohms * * * *

Exciting Current Tests Manufacturer Type Steps Boost % Buck % Position Found Position Left Oil Volume

DETC 3 3 *

Turns Ratio Tests Serial Number HV Winding LV Winding

Delta Wye Connections H3 - H1 H1 - H2 H2 - H3

Tap NP Volt Tap NP Volt Cal Ratio 1 Ratio 2 Ratio 3 Min. Lim Max. Lim Manual

3 12470 3 480 44.997 45.072 45.089 45.063 44.772 45.222 Good

42640529-001-01-1 3 - 4

DETC

LTC Test kV mA 38.189

H3 H1 Watts

303.878 X L

mA 40.401

H1 H2 Watts

318.921 X L

mA 19.004

H2 H3 Watts X

L Manual Good146.139

Exciting Current Plot

42640529-001-01-1 4 - 4

TWO-WINDING DRY-TYPE TRANSFORMER

TEMPERATURE 68 °F

PAGE

END USER

CUSTOMER

2002 HOLCOMBE BLVD.

DEPARTMENT OF VETERAN AFFAIRS

SITE LOCATION

USS-LAUNDRYDESIGNATION

SUBSTATION BUILDING 100

4/27/2021 30

JOB #

DBID

END USER ASSET/ID

HUMIDITYDATE

TESTED BYELEMENT

SUB-ELEMENT

DEVICE

EQUIPMENT USED

DRY TYPE TRANSFORMER

Chris Espartero

M4K , Megger, TTR, Winding Resistance

N/A

N/A

VA Hospital WO-08391081

Acceptable

CONDITIONDescription CLEAN/LUBEDescription

N/A

Torqued

N/A N/A

N/A

N/A N/A

FANS

AcceptableAcceptable

Acceptable

N/A N/A N/A

N/A

N/AVENTILATION / FILTERS

N/A

PAINT Acceptable

INDOOR

CleanedAcceptable

N/A

MATCHES DWG OR SPEC

WEATHER

Cleaned

ENVIRONMENT

Acceptable

N/A

GAUGES

SUPPORT INSULATORS

N/ATorqued

N/A

Windings

Acceptable

N/A CABINET HEATERS

AUXILIARY DEVICES N/ATorqued

PRIMARY CONNECTIONS

TANK / FRAME GROUND

NEUTRAL GROUND

Description CONDITION

SEC. CONNECTIONS Acceptable

N/A

N/A

Acceptable

N/A Torqued

ARRESTERS

CORE GROUND

ALARMS / ANNUNCIATOR

CONTROLS

BUSHINGS

CLEAN/LUBE CLEAN/LUBECONDITION

TEMPERATURE GAUGES WERE RESETunavailable °CMAXIMUM WINDING TEMPERATURE (1)°CunavailableWINDING TEMPERATURE (1)

GAUGES

N/A

CLEAN

23210, REVISED 10/20/2020(888) 778-2733 www.schneider-electric.us

23 23

601601601

NAMEPLATE DATA

RATED CURRENT

RATED CURRENT

AMPERES

AMPERES/

11,846

3 4 5 kV PRI.

PRIMARY VOLTAGE

SECONDARY VOLTAGE 277 WYE

13,094

TAP POSITION/CONNECTION

12,872 12,158

CLASS

12,470

Phase 342640529-001-01-1SERIAL NO.

kVA/

THERMAL RATINGS

DELTA

kV SEC.

IMPEDANCE

YEAR OF MANUF.N/A 2020

MANUFACTURER

SPECIFICATION NO. MANUF. LOCATION

TYPE AA K FACTOR N/A °CTEMPERATURE RISE

U.S.A

1155.51

B.I.L. RATINGWINDING MATERIAL Cu

LB

DELTA480

TAP VOLTAGES

WINDING POLARITY SUBTRACTIVE

WYE

500 / 500

12,470

TOTAL WEIGHT

Dry

Square D

RANGE

INSPECTION

INSULATION RESISTANCE TEST

TESTED

PRIMARY TO

SECONDARY AND GROUND

SECONDARY TO

PRIMARY AND GROUND

VOLTAGE

(VOLTS DC)

(MEGOHMS)

Windings TEST RESISTANCE

PRIMARY TO

SECONDARY

1.0 MINUTE0.5 MINUTE 0.5 MIN. 20C 1.0 MIN. 20C

Acceptable

Acceptable

Acceptable

DIELECTRIC

ABSORPTION

RATIO

TEMPERATURE CORRECTION FACTOR TO 20°C, TCF 1

5,000

1,000

5,000

134,300.0 134,300.0 197,800.0 197,800.0

147,600.0147,600.0115,400.0115,400.0

221,000.0 221,000.0 330,000.0 330,000.0

1.47

1.28

1.49

Calculated PASS/FAIL Calculated

PASS/FAIL

TO

% DEVIATIONMeasured

TRANSFORMER TURNS RATIO TESTS

Calculated PASS/FAIL

CALC.

RATIO

Secondary

VOLTAGE

ENTER Primary

VOLTAGE

X1 - X0 X0 - X2

H1 - H3 H2 - H1 H3 - H2

X0 - X3

TAP TO

TEST

3 45.072 45.089 45.0630.21 % PASS 0.15 % PASSPASS44.996 0.17 %12,470 277

TWO-WINDING DRY-TYPE TRANSFORMER

PAGEDRY TYPE TRANSFORMERDEVICE N/ADBID

23210, REVISED 10/20/2020(888) 778-2733 www.schneider-electric.us

H3-H1 X0-X3X0-X1

WINDING RESISTANCE

H2-H3

Meas. Corr.

TAP

POSITION

TEST

# (milliohms)H1-H2 (milliohms) (milliohms)

Corr.Meas. Corr.Meas.

(milliohms)

Corr. Corr.Meas. Corr.Meas.Meas.

X0-X2 (milliohms) (milliohms)

WINDING TESTED

(t = Equipment Temperature)

Values Corrected to: °C75

Aluminum windings

R(Corr) = R(Meas) * (234.5 + c) / (234.5 + t)Copper windings

R(Corr) = R(Meas) * (226 + c) / (226 + t)

(c = Corrected Temperature)

3 323.900 393.898 322.400 392.074 321.500 390.979 0.868 1.056 0.871 1.059 0.879 1.0691

Primary Secondary

TECH NOTE(S):

COMMENTS: All results are satisfactory at this time.

DEFICIENCIES:

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