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Replace Substation & Switchgear NH A & NH B at Bldg NH-231

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Federal

Contract Overview

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AI Contract Overview

This project involves the replacement of critical electrical infrastructure at Building NH-231 for the Department of the Navy, managed by Navfac Mid-Atlantic. The scope of work focuses on replacing the existing 34.5/11.5 kV-7MVA Medium-Voltage Unit Substation NH Lineup A and the 15kV Metal-Clad Switchgear NH Lineup B with new equipment of the same kind and capacity. Both new switchgear lineups will be single-ended and rated at 15kV-1200A, serving as the electrical backbone for the NH-94, NH-95, and NH areas. Specifically, the new Switchgear A must be compatible with the low-side bushings of the existing 7MVA Transformer B. In addition to the primary replacements and the demolition of old equipment, the project includes several technical upgrades. These enhancements feature a new 75KVA standalone pad-mounted transformer for control power, new DC battery systems, and new Neutral Grounding Resistors. The installation will also incorporate microprocessor-based protection relays, medium voltage vacuum type circuit breakers, and necessary remote racking devices to ensure the safe operation of disconnecting equipment.

General Info

Navfac Mid-Atlantic will replace critical electrical infrastructure and switchgear at Building NH-231.

Agency

Department Of The Navy → Navfac Mid-Atlantic

NAICS

237130 - Power and Communication Line and Related Structures Construction

Place of Performance

USA

Set-Aside

NONE

Documents

No documents available

Documents will appear here when they are available.

AI Contract Breakdown

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Timeline

PostedJul 2

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Organization & Contact Information

AgencyDepartment Of The Navy → Navfac Mid-Atlantic

ContactsNo contacts available

OfficeN/A

Organization / AgencyDepartment Of The Navy → Navfac Mid-Atlantic

Office AddressN/A

ContactsNo contact information available

Full Description

09/12/2023 08:05:44 (PST) : This project will replace the existing 34.5/11.5 kV-7MVA Medium-Voltage (MV) Unit Substation referred as NH Lineup "A" with new MV Unit Substation, which include a Unit Type Transformer and Metal-Clad Switchgear of same in kind and capacities as the existing. The project replaces the existing Metal-Clad 15kV Switchgear referred as NH Lineup "B" with new same in kind 15kV Metal-Clad Switchgear. The Medium Voltage Unit Substations lineups NH A and NH B are sitting on NH-231 at NSAHR. Both MV Metal-Clad Switchgear Lineups NH A and NH B shall be single-ended type and rated at 15kV-1200A. The MV Unit Substations NH A and NH B are the electrical infrastructure backbone NH-94, NH-95 and NH area. The new 15kV Metal-Clad Switchgear A shall match the Low-Side Bushings of existing 7MVA Transformer B, which will remain in place. This project will also include the demolition of the existing equipment to be replaced. the project will provide a new 75KVA standalone pad-mounted transformer for control power, new DC battery systems, new Neutral Grounding Resistors, new microprocessor based protection relays, and medium voltage vacuum type circuit breakers as well as the required remote racking devices to safely operation of the disconnecting equipment.