| 1. | Amtrak's 25 Hz traction power system # Conestoga to Atglen transmission line.
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| 2. | According to later investigations, a cable which supplied traction power came loose.
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| 3. | Note that this section uses overhead wires to provide traction power.
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| 4. | The former Capital Traction Power House on the Georgetown waterfront.
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| 5. | When derived from the prime mover, HEP is generated at the expense of traction power.
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| 6. | Motor-generators and steam turbine generators were the original power sources on the PRR traction power network.
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| 7. | Modernization of many traction power substations, and remodeling of several outlying terminal stations were also completed.
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| 8. | Traction power is supplied at 40 km intervals, with 17 stations in Ethiopia and three in Djibouti.
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| 9. | Two new traction power lines are used to supply power to the line ( 110 kV ).
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| 10. | Special single-phase traction power networks may operate at 16.67 Hz or other frequencies to power electric railways.
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