Resistance and reactance (and consequently impedance) may be expressed in percentage or ohmic terms. In the case of rotating machines and transformers, manufacturer values are always in percentage terms while tables for cables and overhead lines are always in ohmic terms. Calculations can be made using either but not a mixture. For short circuit calculations, generally the percentage values are [...]
Digital computer may be defined as a device that can compute by arithmetic processes. The basic processes used are addition and subtraction. These processes are also used in successive approximation or interaction to obtain function values, integration, solution of algebraic equations and linear and nonlinear differential equations. The input data describing the system is specified using the names of power [...]
A current limiting reactor, also sometimes called a series reactor, is an inductive coil having a large inductive reactance in comparison to its resistance and is used for limiting short circuit currents during fault conditions. These are installed in feeders and ties, in generator leads, and between bus sections to reduce the magnitude of short circuit currents and the effect [...]