IEEE 120-1989 pdf free

04-28-2021 comment

IEEE 120-1989 pdf free.An American National Standard IEEE Master Test Guide for Electrical Measurements in Power Circuits.
IEEE 120 the purpose of this guide to give instructions for those measurements of electrical quantities that are commonly needed in determining the performance characterIstics of electric machinery and equipment. The choice of the measureillent method and instrument systems to be used depends on the purpose of the measurement, the accuracy required, the time and testing equipment available, and the nature of the circuit.
The methods given here relate to measurements, as made with either analog or digital indicating or integrating instruments, of power, energy. voltage, and current, in & or ac rotating machines. transformers, induction apparatus, arc and resistance heating equipment, mercury arc, thermionic, or solid-state rectifiers and inverters. Measurements made with supplementary instruments and devices are also included. This guide does not deal with measurements of resistance or temperature that arc often included in determining the performance characteristics of electric machinery. Instruments for these latter measurements will he found in the specific publications dealing with the particular measurenient, such as IEEE Std 118-1978. IEEE Standard Test (‘ode for Resistance Measurements 1411. and IEEE Std 119-1974. IEEE Recommended Practice for General Principles of Temperature Measurement as Applied to Electrical Apparatus 151.
The measurement of any electrical quantity is the comparison of that quantity with another quantity of the same kind that has been chosen as a unit. The fundamental or basic electrical units are based on the International System of Units (SI). which is a modern version of the MKSA (meter, kilogram, second, ampere) system. For further details see ansi! ieee 268-1982. IEEE Standard for Metric Practice 131. In magnetic measurements it is the common practice to use the cgs (centimeter-gram-second) system. The instrument readouts are frequently in the cgs units. Hence, in Chapter 6 of this guide both units are used and a conversion table is provided.IEEE 120 pdf download.

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