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Guidelines for establishing criteria for application, performance, interchangeability, tests, life cycle costs, and safety requirements of traction power rectifier transformers are established in this standard. Set forth are the electrical, mechanical and thermal design, manufacturing, and testing requirements for traction power rectifier transformers for dc electrification systems. Covered in this standard are liquid-immersed and dry-type transformers, including those with cast coil and epoxy resin encapsulated windings.
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This standard applies to low-voltage gas discharge tube (GDT ) surge-protective components for application on systems with voltages less than or equal to 1000 V rms or 1500 V dc. These protective components are designed to limit voltage surges on balanced or unbalanced communication circuits and on power circuits operating from dc to 420 Hz. This standard contains a series of standard test criteria for determining the electrical characteristics and ratings of gas discharge tube surge-protective components.
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This standard practice provides rating data, construction requirements, testing and calculation methods for dry-type or liquid-filled semiconductor power rectifier transformers. These transformers supply nonsinusoidal load currents and are subject to higher harmonic load losses than standard power transformers.
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Abstract: Errors in Equation (18) and Equation (19) are corrected by this corrigendum. Keywords: current transformers, IEEE C37.110, protective relaying.
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