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In 1935, LTK was commissioned to design the traction power substations and third rail system for the rapid transit line between Philadelphia, PA and Camden, NJ. Shortly thereafter, LTK designed the traction power and overhead catenary systems when the Reading Railroad Company’s Fox Chase Branch was rebuilt as a part of the Philadelphia area’s regional 12 kV, 25 Hz electrified commuter rail network.

Today, LTK continues to build on the experience gained from these early projects, and is recognized as a full-service engineering firm specializing in traction electrification designs including, traction power substations, transmission systems and distribution systems.  Our distribution system capabilities encompass third rail and overhead catenary systems, including simple trolley wire, complex catenary arrangements and electric trolleybus systems. LTK has the experience to design substations and related protection systems for the entire range of North American electrification, including 600 Vdc, 750 Vdc, 1,500 Vdc, 1x25 kV, 60 Hz direct-fed, 2x25 kV 60 Hz autotransformer-fed, 12 kV, 25 Hz multiple-fed, and 12 kV/24 kV, 25 Hz autotransformer-fed systems.

LTK's traction power capabilities also include system planning, computer modeling and simulation using our state-of the-art software tools, development of design criteria and specifications, electrical and hardware layout drawings, construction management, design review, support for acceptance testing and warranty supervision. In addition to design and construction-related services, LTK offers a wide array of O&M support services including infrastructure and equipment inspections; development of maintenance, service and inspection procedures; incident investigations and failure analysis; audits of internal operations and procedures; and training.

Additional capabilities include evaluation of power quality issues and analysis of traction electrification system effects on the power supply utility. Our simulation software tools provide comprehensive results in the form of unbalance levels, harmonic distortion, voltage flicker, and EMI indices at the power utility buss bars and in the transmission lines.

Non-traction power requirements such as station lighting and amenities, parking lot lighting and signal system primary power are also supported by LTK traction power engineers, in cooperation with the appropriate systems and facilities designers. 

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