Fort Belvoir Bldg 2310 UPS 1 PM Report.pdf

00802251 Work order number

EH412BAA10

Serial number

FORT BELVOIR UPS-1

Customer unit ID

Prepared for

OWEN BERINGER

OBeringer@chesapeakemc.com

US ARMY

8575 JJ KINGMAN RD

FORT BELVOIR, VA, 22060

Service performed by

Miguel Serafin

8609 Six Forks Rd

Raleigh, NC 27615

Service Dispatch: (800) 843-9433 www.eaton.com/powerquality

+CP+ 9395-550 ISBM, 2 UPMs 480V 10" Inspection date: 8/19/2025

Field activity report

Modification/Upgrade

VISIT SUMMARY

+CP+ 9395-550 ISBM, 2 UPMs 480V 10" ELECTRICAL ROOM (ENTER FROM OUTSIDE)

Unit / Model Location

Modification/Upgrade Service Type

Fixed Price Billing Type

Additional Details:

Notes and recommendations

9395 EH412BAA10 MOD

UPS & Battery System – Full Assessment Summary Assessment Overview A complete inspection and maintenance check was performed on the UPS and battery systems. No issues were found with the UPS or the batteries. All systems are operating correctly and do not require replacement. Battery terminals were burnished and re-torqued as needed, with all connections verified as secure and properly made.

With approval from Cellwatch Technical Support, we adjusted the internal alarm threshold to 5 mOhms, successfully clearing 11 alarms.

While Cellwatch readings show 135 batteries at 12.9VDC, direct readings using a digital voltmeter confirmed voltages between 13.1 and 13.2VDC. This discrepancy, though not critical, demonstrates that the Cellwatch system is outdated and delivering inaccurate data.

More critically, several batteries in the Cellwatch system showed voltages in the 11VDC range, indicating undercharging. If not promptly recharged, these batteries risk permanent degradation. The Battery Switchgear Control Voltage rack requires an IMMEDIATE battery charger replacement to restore proper functionality.

The DCMs (Data Collection Modules) are obsolete and need IMMEDIATE replacement. These outdated modules contribute to false alarms and inaccurate monitoring, which could delay early detection of real issues. I recommend dispatching Eaton service technicians to install new DCMs once they become available.

In conclusion, the UPS and battery cabinets are in excellent condition. The system is structurally sound, and performance remains reliable.

However, monitoring components (DCMs) and the battery charger for the control voltage rack must be addressed to maintain system integrity.

Key Takeaways

• • No issues were found with UPS or batteries during the assessment.

• • Burnished and re-torqued battery terminals; all connections were secure and properly made.

• • With Cellwatch support, adjusted alarm threshold to 5 mOhms — cleared 11 active alarms.

• • 135 batteries showed 12.9VDC via Cellwatch; verified 13.1–13.2VDC using a digital voltmeter — not alarming but confirms Cellwatch is inaccurate.

• • Several batteries observed in the 11VDC range via Cellwatch — must be recharged soon to prevent degradation. The Battery Switchgear Control Voltage rack requires an IMMEDIATE replacement of the battery charger.

• • DCMs are outdated — IMMEDIATE replacement strongly recommended to ensure accurate system monitoring.

• • Requesting Eaton technicians to install new DCMs when received.

• • Overall, the UPS and battery cabinets are in excellent condition and do NOT require replacement.

1292070086.CIV

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1292070086.CIV

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EQUIPMENT DETAILS

Information

Unit / Model: +CP+ 9395-550 ISBM, 2 UPMs 480V 10" KVA: 500.0 KW: 455.0

Serial #: EH412BAA10 CTO: -

Inspection results

Passed Needs attention Failed Not applicable

Room temperature 69 Degrees (F)

Air filters 10 (out of 10)

Room cleanliness 10 (out of 10)

Visual inspection

Metering

Room floor type

Room ventilation

FSBs checked

Mimic screen

Monitor panel function

Output fuses

Remote monitor panel operation

Static switch fuses

System transfers

Time and date set correctly

Download configuration report

Download EEPs

Download and check event log

Download unit stats

Communication function

Equipment Readings

Bypass Nominal 280.3

A-B VAC 485.8

B-C VAC 485.6

C-A VAC 485.0

A-N VAC 280.1

B-N VAC 280.8

C-N VAC 279.9

DC

Nom DC Link NA DC Link Volts 732.4 Battery Volts 521.0 Pos/Ground NA Neg/Ground NA

Inverter Nominal 277.1

A-B VAC 480.0

B-C VAC 480.0

C-A VAC 480.0

A-N VAC 277.1

B-N VAC 277.1

C-N VAC 277.2

Output Nominal 277.0

A-B VAC 480.0

B-C VAC 479.8

C-A VAC 479.8

A-N VAC 277.1

B-N VAC 277.1

C-N VAC 276.9

A-I 154.5 B-I 151.7 C-I 173.5

Frequency 60.0 Percent Load 26.6 Output KVA 132.8 Output KW 132.4

Input Nominal 280.2

A-B VAC 485.6

B-C VAC 485.6

C-A VAC 484.8

A-N VAC 279.9

B-N VAC 280.8

C-N VAC 279.9

A-I 187.9 B-I 188.5 C-I 187.7

Frequency 60.0

BATTERY DETAILS

Battery 1 Manufacturer: C&D Tech

Model: 12HX540-FR

Number of strings: 3

Trays/Str: 10

Jars/Tray: 4

Date code: JUL 2023

Battery type: Sealed

Cabinet type: Cabinet

Battery 2 Manufacturer:

Model:

Number of strings:

Trays/Str:

Jars/Tray:

Date code:

Battery type:

Cabinet Type:

MATERIALS AND LABOR

Materials consumed

Date Material CSE Name QTY

Labor

Date Labor Item CSE Name Start Time End Time

8/18/2025 Travel Miguel Serafin 5:00 AM 8:00 AM

8/18/2025 Labor Miguel Serafin 8:00 AM 12:00 PM

8/19/2025 Travel Miguel Serafin 6:00 AM 9:00 AM

8/19/2025 Labor Miguel Serafin 9:00 AM 10:00 AM