Inspection Results.pdf

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Z1DA--NRM| 460-26-007 Electrical Distribution Inspection Repairs | NCO 4 Construction East (VA-26-00057558)
Solicitation number
36C24427B0002
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This is a Low Voltage Power Circuit Breaker Test and Inspection report for Job #861903 at Wilmington, VA (1601 Kirkwood Highway, Wilmington, DE 19805), dated 5/17/2025 and 5/18/2025. The report documents testing results for three separate circuit breakers and includes a deficiency summary identifying maintenance and replacement needs.

Main Breaker (Building 143 - Emergency Gear): An Eaton NGS 50K breaker with 1200A frame size was tested on 5/18/2025. All inspected components including cubicle/racking devices, arc chutes, and mechanism were found in acceptable condition. Contact resistance measurements were 37, 36, and 36 micro-ohms for phases A, B, and C respectively. Primary injection testing was not performed (N/T). The critical deficiency noted is that the breaker would not reset while operating, with immediate replacement recommended. Megger testing was not completed (N/T).

Sub B Main Breaker (Room 244): A Westinghouse DS 416H breaker with 1600A frame size and Digitrip RMS 610 trip unit was tested on 5/17/2025. All mechanical components and contacts were in acceptable condition with no contact resistance testing performed (N/T). Primary injection testing confirmed instantaneous, short time, and long time function performance met specifications across all three phases. Megger testing showed 1,000 meg-ohms across all phase-to-ground and phase-to-phase measurements. The significant deficiency is a broken racking mechanism preventing the breaker from being racked out of its cell; a spare unit should be ordered for repairs. Additional deficiencies identified in the broader job summary relate to medium voltage disconnect switches (29000 series) with insulator terminal boot covers showing signs of tracking/treeing requiring replacement across multiple outdoor switch locations (S4 and S5).

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LOW VOLTAGE POWER CIRCUIT BREAKER

TEST AND

15 PAGE

JOB # 861903

Cat #NGS312033E, Style: 149r3D04G Lin b ker to perform insulation resistance testing. All test results acceptable to NETA test standa a e

While operating- breaker, the breaker would not reset. Recommend repla s possible ng as oon

TESTED BY: BS Form Number:15118, Designed By FM 4/16/2020

CUSTOMER Wilmington VA

ADDRESS 1601 Kirkwood Highway ; Wilmington DE 19805

USER Wilmington VA

N/A

SENSOR TAPS: N/A

FUSE CAT. NO:

OPS AS FOUND /AS LEFT: On On

OWNER REPRESENTATIVE

DATE 5/18/2025 TEMPERATURE 30 °C HUMIDITY 28 % EQPT. LOCATION

SUBSTATION Building 143 ( Emergency Gear) POSITION

TELEPHONE

1601 Kirkwood Highway

Main Breaker

MANUFACTURER:

BREAKER TYPE:

TRIP UNIT TYPE:

FRAME SIZE:

SN /SO NO: N/A MOUNTING: B.I. D.O.

MANUAL/ELECTRIC: E

CONTROL VOLTAGE CLOSE: N/A

CONTROL VOLTAGE TRIP: N/A

Eaton

NGS 50K

Description INSPECTED CONDITION CLEAN/LUBE

CUBICLE AND RACKING DEVICES 17 7 Acceptable C

CONTACT FINGERS n N/A N/A

LOADING AND ARCING CONTACTS I- N/A N/A

OVERCURRENT DEV. BATTERY r N/A N/A

Description INSPECTED CONDITION CLEAN/LUBE

ARC CHUTES J7 Acceptable C

AUXILIARY DEVICES I - N/A N/A

GROUND CONNECTION r N/A N/A

MECHANISM 17 Acceptable C

_J

SETTINGS AS FOUND

LONG TIME PU

X 1200 A = 1200 A DELAY 2

RATING PLUG(R) 1200 SHORT TIME PU 2

1200 A ( ON 0 OFF DELAY N/A PT 0 IN r , OUT aiN N/A

SENSOR TAP N/A INST. PU N/A

N/A A (") ON OFF

GRD. FLT. PU N/A

N/A A O ON (4.` OFF DELAY N/A PT 0 IN 0 OUT (.4‘ N/A

SETTINGS AS LEFT

LONG TIME PU 1200 X 1200 A = 1200 A DELAY 2

RATING PLUG(R) 1200 SHORT TIME PU 2 = 1200 A 0 ON r OFF DELAY N/A PT O IN C' OUT (4-1P N/A

SENSOR TAP Nli, INST. PU

GRD. FLT. PU

N/A =

N/A A

A

C' ON r OFF

C' ON O OFF DELAY N/A PT O IN ("N OUT AP N/A

N/A N/A

PRIMARY INJECTION TEST

FUNCTION

TEST

CURRENT

TIME BAND / CURRENT

MINIMUM MAXIMUM

PICK UP

INSTANTANEOUS N/A N/A N/A

SHORT TIME N/T N/T NfT

LONG TIME N/T N/T N/T

GROUND FAULT N/A N/A N/A

PHASE A PHASE B PHASE C

AS

FOUND

AS

LEFT

AS

FOUND

AS

LEFT

AS

FOUND

AS

LEFT

N/A N/A N/A N/A N/A N/A

N/T N/T N/T N/T N/T N/T

N/T N/T N/T N/T N/T N/T

N/A N/A N/A N/A N/A N/A

CONTACT RESISTANCE - IN MICRO-OHMS Test Current @ 10 Amps

A B C

BREAKER 37 36 36

FUSE N/A N/A N/A

BREAKER & FUSE N/A N/A N/A

MEGGER TEST RESULTS - MEGGER VOLTAGE @ 1,000 VDC

BREAKER

CLOSED

Phase A - Ground

Phase B - Ground

Phase C - Ground

NIT

Meg-Ohms N/T

Meg-Ohms

Phase A - Phase B

Phase B - Phase C

Phase C - Phase A

NIT

BREAKER

OPEN

Phase A Line - Load

Phase B Line - Load

Phase C Line - Load

N/T

Meg-Ohms NIT

Meg-Ohms NTT

COMMENTS:

DEFICIENCIES:

Megger Cal #185627. AEMC Cal # 100343.

SENSOR TAPS:

FUSE CAT. NO: N/A

SETTINGS AS FOUND

RATING PLUG(R) 1600

SENSOR TAP

SETTINGS AS LEFT

RATING PLUG(R) 1600

SENSOR TAP

GRD. FLT. PU N/A = N/A A C' ON @ OFF DELAY 0.3 PT r IN C' OUT @ N/A

MANUFACTURER:

BREAKER TYPE:

TRIP UNIT TYPE:

FRAME SIZE:

SN /SO NO: Can not see due to issue

OPS AS FOUND / AS LEFT: N/A /

MOUNTING: C' B.I. D.O.

MANUAL/ELECTRIC: M C' E

CONTROL VOLTAGE CLOSE: N/A

CONTROL VOLTAGE TRIP:

Description INSPECTED CONDITION CLEAN/LUBE

CUBICLE AND RACKING DEVICES r.7 Acceptable C/L

CONTACT FINGERS J7 Acceptable C

LOADING AND ARCING CONTACTS sl7 Acceptable C

OVERCURRENT DEV. BATTERY 17 Acceptable C

Description INSPECTED CONDITION CLEAN/LUBE

ARC CHUTES 7 Acceptable C

AUXILIARY DEVICES F N/A N/A

GROUND CONNECTION 17 Acceptable C

MECHANISM 7 Acceptable C/L

GRD. FLT. PU N/A = N/A A C' ON 6. OFF DELAY 0.3 PT r, IN r, OUT (3 N/A

PRIMARY INJECTION TEST

FUNCTION

TEST

CURRENT

TIME BAND / CURRENT

MINIMUM MAXIMUM

PICK UP N/A N/A N/A

INSTANTANEOUS NIT -20% +20%

SHORT TIME 14400 .240 .335

LONG TIME 9600 16.08 24.00

GROUND FAULT N/A N/A N/A

PHASE A PHASE B PHASE C

AS

FOUND

AS

LEFT

AS

FOUND

AS

LEFT

AS

FOUND

AS

LEFT

N/A N/A N/A N/A N/A N/A

NO DELAY NO DELAY NO DELAY NO DELAY NO DELAY NO DELAY

.24 .24 .24 .24 .24 .24

21.2 21.2 21.2 21.2 21.2 21.2 N/A N/A N/A N/A N/A N/A

Westinghouse

DS 416H

Digitrip RMS 610

1600 N/A

N/A

1.0 X 1600 A = 1600 A DELAY 24

S2 = 19200 A @ ON r, OFF DELAY 0.3 PT r IN r, OUT @ N/A

6 = 9600 A @ ON C' OFF

LONG TIME PU

SHORT TIME PU

INST. PU

1.0 X 1600 A = 1600 A DELAY 24

S2 = 19200 A @ ON r, OFF DELAY 0.3 PT C' IN C' OUT @ N/A 6 = 9600 A ON r, OFF

LONG TIME PU

SHORT TIME PU

INST. PU

LOW VOLTAGE POWER CIRCUIT BREAKER

TEST AND INSPECTION

CUSTOMER Wilmington VA

ADDRESS 1601 Kirkwood Highway ; Wilmington DE 19805 USER Wilmington VA

OWNER REPRESENTATIVE

DATE 5/17/2025 TEMPERATURE 20 °C HUMIDITY 82 % EQPT. LOCATION

SUBSTATION

PAGE

JOB # 861903

TELEPHONE

1601 Kirkwood Highway

Sub B Main Breaker

Room 244 POSITION

CONTACT RESISTANCE - IN MICRO-OHMS Test Current @ 10 Amps

A B C

BREAKER N/T N/T

MEGGER TEST RESULTS - MEGGER VOLTAGE @ 1,000 VDC

N/T

FUSE N/A N/A N/A

BREAKER & FUSE N/A N/A N/A

r BREAKER

CLOSED

Phase A - Ground Phase B - Ground Phase C - Ground 1,000 Meg-Ohms 1,000 Meg-Ohms 1,000 Meg-Ohms

Phase A - Phase B Phase B - Phase C Phase C - Phase A 1,000 Meg-Ohms 1,000 Meg-Ohms 1,000 Meg-Ohms

BREAKER

OPEN

Phase A Line - Load Phase B Line - Load Phase C Line - Load 1,000 Meg-Ohms 1,000 Meg-Ohms 1,000 Meg-Ohms

COMMENTS: All test results meet NETA recommended specs.

DEFICIENCIES: Breaker racking mechanism is broken. Can not rack out of cell. Spare should be ordered to take out of service for repair.

V1/4)041-1 vt :34"-e.y4.4.-y_As—. c;,v‘e— 0 (.;7 44-0 tp e--

4,Xec... Ne' ckt.v0;% ok-v-c9—ses, 1644_,\L

TESTED BY: FV / EB /AG

dt 501keC

Form Number:15118, De3d,ned 3y FL1 4/16/2020

Red in tor terminal ot covers need show signs of tracking/treeing. Recommend replacing all 3 DEFICIENCIES:

Deficiency Summary Job #861903

Plant: Wilmington

Page: 92

Date: 5/17/2025 Substation: Outdoor Switches S4 Circuit_ID: Switch Loop Interconnect SW 4 to SW 3

Equipment: 29000 - MEDIUM VOLTAGE DISCONNECT (TXT)

DEFICIENCIES: Red insulator terminal boot covers need show signs of tracking/treeing. Recommend replacing all 3.

Plant: Wilmington

Substation: Outdoor Switches S4 Page: 93

Date: 5/17/2025 Circuit_ID: Switch Loop Interconnect SW 4 to SW 5

Equipment: 29000 - MEDIUM VOLTAGE DISCONNECT (TXT)

DEFICIENCIES: Red insulator show signs of tracking/treeing. Recommend replacing all 3.

Plant: Wilmington Substation: Outdoor Switches S5

Page: 96

Date: 5/17/2025 Circuit_ID: Switch Loop Interconnect SW 5 to SW 4

Equipment: 29000 - MEDIUM VOLTAGE DISCONNECT (TXT)

DEFICIENCIES: Red insulator terminal boot covers need show signs r king/treeing. Recommend replacing all 3.

Plant: Wilmington Substation: Outdoor Switches S5

Page: 97

Date: 5/17/2025 Circuit_ID: Switch Loop Interconnect SW 5 to SW 6

Equipment: 29000 - MEDIUM VOLTAGE DISCONNECT (TXT)

Plant: Wilmington Substation: Room 244

Page: 116

Date: 5/17/2025 Circuit_ID: Sub B Main Breaker

Equipment: 15118 - LV-CKT BKR TEST

DEFICIENCIES:

t-C.v> $c_ u s— )14; Vt 16V NiVtLA:i ) 3 .<-4 t -C 'O4-ti Z sO p$4,re

Plant: Wilmington

Substation: Room 244 (ATS) Circuit ID: ATS 3

Page: 128

Date: 5/18/2025

TEST EQUIPMENT USED: TESTED BY:

Family of companies QUITILUS URLUS COPYRIGHT m 2022 Qualua

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