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DC Breaker Replacement

Agency
CTA
Asset Category
Track & Structure
Mode
Rail
2025 Funding
$0
2025-2029 Funding
$0
PMO

This map shows the location of the project. For projects that do not have a specific location but affect a line/route or the entire system, either the affected lines/routes are shown, or an entire service area map is shown.

If you select the option to “toggle the benefit layer,” you will see an approximation of the area that will benefit from the project.

Each capital project is measured on 15 evaluation metrics to better understand its impact on the region. Learn more about the metrics and see a legend for all measures here.

Click the circled (i) information button to read a definition of each metric and hover over the image to see more about each measure.

The degree to which a project improves regional access to the region’s key destinations. Including jobs, retail, healthcare, recreation, and education.

The project improvements to existing assets to make them partially or fully accessible. Including station/stop and area improvements, vehicle accessibility, and accessible communications.

The project impact to ratings from the FTA Transit Economic Requirements Model (TERM).

The project’s minor or major benefits to riders and what proportion of the agency’s riders will benefit from it.

The project impact on overall capacity, reflecting current and planned levels of utilization.

The project impact on reductions or offsets to greenhouse gas (GHG) emissions generated from transit operations.

Project impacts on land use and development, construction, and long-term jobs.

The distribution of project benefits to location(s) identified under the USDOT Justice40 Program.

The project impact to maintenance or improvement of exposure to risk for riders/employees and the project impact to security enhancement.

The project impact on operating costs.

The project impact to maintenance or improvement of exposure to risk for riders/employees and the project impact to security enhancement.

Project impact on maintenance or improvement of service speed and reliability, considering both direct and indirect impacts.

If required, whether or not the project complies with federal, state, local, or other regulatory mandates.

The project impact to climate benefits, such as a reduction in emissions, generated from mode shift to transit and away from private auto-use.

The project impact to average vehicle ages, compared with Service board benchmarks to prioritize replacing vehicles that are beyond their useful life.

Evaluation Metric Measure
Access to Key Destinations i
One green up arrow

Moderately improves Access to Key Destinations

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Accessibility Improvement(s) i
Not applicable symbol

Project is not related to accessibility

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Asset Condition (FTA TERM Rating) i
Green gear

Asset(s) rated above 3

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Benefit to Riders i
Black line with arrows on each end

Helps to maintain current benefits to riders

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Capacity Benefit and Need i
One green up arrow

Project increases capacity of transit operations not near capacity

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Climate Agency Operating Impacts i
Red line with arrows on each end

No reduction in emission

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Economic Impact i
Not applicable symbol

No economic impact

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Equity Based on Residential Geography i
One green up arrow

Score 0-2 in Justice40 metric 'Sum of Disadvantage Indicators'

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Impact on Customer and Employee Safety i
Two green up arrows

Project directly provides safety benefit/improvement

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Impact on Operating Cost i
One red up arrow

Increases operating cost

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Impact on System Security i
Black line with arrows on each end

Project maintains or replaces existing level of security

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Impact to Service Speed/Reliability i
Two green up arrows

Significantly improves speed/reliability

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Regulatory Requirements i
Black x mark

No regulatory requirements met for this project

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Ridership/Mode Shift Impacts i
Black line with arrows on each end

Maintains assets necessary for transit ridership

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Vehicle Useful Life i
Not applicable symbol

Asset is not a vehicle with a useful life

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Project Description

The CTA has identified additional traction power needs based on results from the Blue Line Load Flow study. These needs are targeted traction power improvements on the Blue Line such as AC/DC breaker replacement, transformer replacements, upgrading 3rd rail gap cabling, and upgrading getaway cabling and switches. The focus project for this PPS is DC breaker replacement at five existing substations with some associated state of good repair work as funding allows. These five substations and their proposed work are listed below by location: Franklin: 4 DC Feeder breakers, 3 cathode breakers, 2 ELF breakers and 1 Auxiliary Cubicle; Nagle: 4 DC Feeder breakers, 3 cathode breakers, 6 AC breaker replacement Kedvale: 4 DC Feeder breakers, 3 cathode breakers, 1 Emergency Exit Door Edmunds: 4 DC Feeder breakers, 3 cathode breakers, 3 rectifier replacement, 3 bus duct replacement, modify existing Emergency Exit door; Sacramento: 4 DC Feeder breakers, 3 cathode breakers 1. Provide design and engineering services in accordance with the Manual of Procedures for Architectural and Engineering Services and the following design efforts for this project. 2. Remove all existing equipment including, but not limited to, DC switchgear assemblies, AC Breakers (Nagle only), Rectifiers and Duct Banks (Edmunds only), relays, interconnection power and control cables connected between the traction power equipment, and SCADA RTU’s and related appurtenances. 3. Furnish and install new DC switchgear including feeder breakers, cathode breakers, ELF breakers (Franklin only) and AC Breakers (Nagle only), within new cubicles as outlined above for each substation. Provide an auxiliary cubicle. Furnish and install new Rectifiers and Duct Banks at Edmunds only. 4. Provide all required cabling and terminations. 5. Provide all factory testing, startup, and commissioning.