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SEPTA's 25 Hz Traction Power System
Southeastern Pennsylvania Transportation Authority (SEPTA) operates a 25 Hz traction power system in the vicinity of Philadelphia, Pennsylvania, that it inherited from the Reading Railroad. This system is separate from but similar to the system designed by the Pennsylvania Railroad, which is now operated by Amtrak. SEPTA's trains can run over either system because the voltage and frequency presented to the locomotive are essentially identical. However, the ex-Reading system is not electrically connected to the ex-PRR system. SEPTA owns all of the substations described herein. Although SEPTA also owns former PRR substations along the Media/Wawa Line and the Chestnut Hill West Line, as well as a new substation just north of 30th Street Station, those facilities are electrically part of Amtrak's 25 Hz traction power system. History The Reading Railroad electrified its lines between Reading Terminal in Philadelphia, Pennsylvania, and Norristown, Doylestown, Chestnut Hill, Hatbo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SEPTA Lansdale-Substation-reverse
The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates transit bus, bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly 4 million people in five counties in and around Philadelphia, Pennsylvania. It also manages projects that maintain, replace and expand its infrastructure, facilities and vehicles. SEPTA is the major transit provider for Philadelphia and the counties of Delaware County, Pennsylvania, Delaware, Montgomery County, Pennsylvania, Montgomery, Bucks County, Pennsylvania, Bucks, and Chester County, Pennsylvania, Chester. It is a state-created authority, with the majority of its board appointed by the five Pennsylvania counties it serves. While several SEPTA commuter rail lines terminate in the nearby states of Delaware and New Jersey, additional service to Philadelphia from those states is provided by other agencies: the PATCO Speedline from Camden County, New Jer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chestnut Hill East (SEPTA Station)
Chestnut Hill East station is a SEPTA Regional Rail station in Philadelphia, Pennsylvania. Located at 102–04 Bethlehem Pike at Chestnut Hill Avenue, it serves the Chestnut Hill East Line. The current station building was built in 1931 by the Reading Railroad The Reading Company ( ) was a Philadelphia-headquartered railroad that provided passenger and commercial rail transport in eastern Pennsylvania and neighboring states that operated from 1924 until its 1976 acquisition by Conrail. Commonly call ..., as a replacement for an earlier station that existed between 1872 and 1930. The station is in zone 2 on the Chestnut Hill East Line, on former Reading Railroad tracks, and is 10.8 track miles from Suburban Station. In 2013, this station saw 433 boardings and 479 alightings on an average weekday. Chestnut Hill East is often confused with Chestnut Hill West, which is a SEPTA station a few minutes away from Chestnut Hill East's location. Boarding statistics, however, show gre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PECO Energy
PECO, formerly the Philadelphia Electric Company, is an energy company founded in 1881 and incorporated in 1929. It became part of Exelon Corporation in 2000 when it merged with Commonwealth Edison's holding company Unicom Corp. The company has approximately 2,300 employees; its call center and field craft personnel are members of IBEW Local 614. PECO serves about 1.6 million electric and over 511,000 natural gas customers; it is the largest combination utility in Pennsylvania, and has a franchise utility service area of with a population of 3.8 million people. Electricity and natural gas PECO operates in southeastern Pennsylvania and provides electricity to about 1.6 million customers and natural gas to over 511,000 customers. The company's electric service area covers all of the city of Philadelphia and Delaware County; most of Bucks, Chester, and Montgomery counties; and the southeastern corner of York County. The company's natural gas service area covers all of Dela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amtrak's 25 Hz Traction Power System
Amtrak's 25 Hz traction power system is a Traction power network, traction power grid operated by Amtrak along the southern portion of its Northeast Corridor (NEC): the 226.6 route miles (362 km) between Washington, D.C. and New York City and the 104 route miles (167 km) between Philadelphia and Harrisburg, Pennsylvania. The Pennsylvania Railroad constructed it between 1915 and 1938. Amtrak inherited the system from Penn Central, the successor to the Pennsylvania Railroad, in 1976, along with the Northeast Corridor. This is the reason for using 25 Hz, as opposed to 60 Hz, which is the standard for power transmission in North America. In addition to serving the NEC, the system provides power to NJ Transit Rail Operations (NJT), the SEPTA, Southeastern Pennsylvania Transportation Authority (SEPTA) and the MARC Train, Maryland Area Regional Commuter Train (MARC). Only about half of the system's electrical capacity is used by Amtrak. The remainder is sold to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SEPTA Lansdale-Substation-transformers-close
The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly 4 million people in five counties in and around Philadelphia, Pennsylvania. It also manages projects that maintain, replace and expand its infrastructure, facilities and vehicles. SEPTA is the major transit provider for Philadelphia and the counties of Delaware, Montgomery, Bucks, and Chester. It is a state-created authority, with the majority of its board appointed by the five Pennsylvania counties it serves. While several SEPTA commuter rail lines terminate in the nearby states of Delaware and New Jersey, additional service to Philadelphia from those states is provided by other agencies: the PATCO Speedline from Camden County, New Jersey is run by the Delaware River Port Authority, a bi-state agency; NJ Transit operates many bus lines and a commuter rail line t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autotransformer
An autotransformer is an electrical transformer with only one winding. The " auto" (Greek for "self") prefix refers to the single coil acting alone, not to any kind of automatic mechanism. In an autotransformer, portions of the same winding act as both the primary winding and secondary winding sides of the transformer. In contrast, an ordinary transformer has separate primary and secondary windings which have no metallic conducting path between them. The autotransformer winding has at least three taps where electrical connections are made. Since part of the winding does "double duty", autotransformers have the advantages of often being smaller, lighter, and cheaper than typical dual-winding transformers, but the disadvantage of not providing electrical isolation between primary and secondary circuits. Other advantages of autotransformers include lower leakage reactance, lower losses, lower excitation current, and increased VA rating for a given size and mass. An example of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SEPTA Autotransformer
The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates transit bus, bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly 4 million people in five counties in and around Philadelphia, Pennsylvania. It also manages projects that maintain, replace and expand its infrastructure, facilities and vehicles. SEPTA is the major transit provider for Philadelphia and the counties of Delaware County, Pennsylvania, Delaware, Montgomery County, Pennsylvania, Montgomery, Bucks County, Pennsylvania, Bucks, and Chester County, Pennsylvania, Chester. It is a state-created authority, with the majority of its board appointed by the five Pennsylvania counties it serves. While several SEPTA commuter rail lines terminate in the nearby states of Delaware and New Jersey, additional service to Philadelphia from those states is provided by other agencies: the PATCO Speedline from Camden County, New Jer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiple Unit
A multiple-unit train or simply multiple unit (MU) is a self-propelled train composed of one or more carriages joined together, which when coupled to another multiple unit can be controlled by a single driver, with multiple-unit train control. Although multiple units consist of several carriages, single self-propelled carriages – also called railcars, rail motor coaches or railbuses – are in fact multiple-units when two or more of them are working connected through multiple-unit train control (regardless if passengers can walk between the units or not). History Multiple-unit train control was first used in electric multiple units in the 1890s. The Liverpool Overhead Railway opened in 1893 with two-car electric multiple units, controllers in cabs at both ends directly controlling the traction current to motors on both cars. The multiple-unit traction control system was developed by Frank Sprague and first applied and tested on the South Side Elevated Railroad (n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycloconverter
A cycloconverter (CCV) or a cycloinverter converts a constant amplitude, constant frequency AC waveform to another AC waveform of a lower frequency by synthesizing the output waveform from segments of the AC supply without an intermediate DC link ( and ). There are two main types of CCVs, circulating current type or blocking mode type, most commercial high power products being of the blocking mode type. Characteristics Whereas phase-controlled SCR switching devices can be used throughout the range of CCVs, low cost, low-power TRIAC-based CCVs are inherently reserved for resistive load applications. The amplitude and frequency of converters' output voltage are both variable. The output to input frequency ratio of a three-phase CCV must be less than about one-third for circulating current mode CCVs or one-half for blocking mode CCVs.Bose (2006), p. 153 Output waveform quality improves as the ''pulse number'' of switching-device bridges in phase-shifted configuration increases in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wayne Junction
Wayne Junction station is a SEPTA Regional Rail junction station located at 4481 Wayne Avenue, extending along Windrim Avenue to Germantown Avenue. The station is located in the Nicetown neighborhood of Philadelphia. Wayne Junction serves as a multi-modal transfer point between six of SEPTA's regional rail lines as well as three major transit routes – the Route 75 Trackless Trolley and the Route 23 and 53 bus lines. The station served more than 321,000 riders annually in 2018. Service The Chestnut Hill East Line joins the SEPTA Main Line at Wayne Junction. Wayne Junction is the last station before the Fox Chase Line splits off the SEPTA Main Line, at Newtown Junction. Additionally, Wayne Junction is served by the Warminster Line, West Trenton Line, and Lansdale/Doylestown Line on the SEPTA Main Line. Station The original station building was designed by architect Frank Furness and constructed in 1881. The current station building was designed in 1900 by architects Wilson B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warminster (SEPTA Station)
Warminster station is a SEPTA Regional Rail station in Warminster, Pennsylvania. It serves as the North end of the Warminster Line. The station is occasionally served by passenger trains operated by the New Hope Railroad, which has an interchange just north of the station with Pennsylvania Northeastern Railroad. Original electrification from Hatboro was extended to Warminster on July 29, 1974, replacing the former Reading Company Bonair station. This station is wheelchair ADA accessible. Description Warminster station consists of a side platform along the tracks that is wheelchair accessible. The station has a ticket office and waiting room that is open on weekday mornings. There are four bike racks available that can hold up to eight bicycles. Warminster station has a daily parking lot with 562 spaces that charges $1 a day and a permit parking lot with 238 spaces that charges $25 a month. Train service at Warminster station is provided along the Warminster Line of SEPTA R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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