By Roger C. Dugan
THE DEFINITIVE consultant TO strength QUALITY--UPDATED AND EXPANDED
Electrical energy structures Quality, 3rd variation, is a whole, obtainable, and updated consultant to picking and fighting the explanations of energy caliber difficulties. the data is gifted with no heavy-duty equations, making it useful and simply readable for software engineers, business engineers, technicians, and gear designers. This in-depth source addresses the necessities of strength caliber and demonstrated the way to increase compatibility one of the strength process, shopper gear, and processes.
- Standard phrases and definitions for strength caliber phenomena
- Protecting opposed to voltage sags and interruptions
- Harmonic phenomena and working with harmonic distortion
- Transient overvoltages
- Long-duration voltage adaptations
- Benchmarking energy caliber
- International Electrotechnical fee (IEC) and Institute of electric and Electronics Engineers (IEEE) criteria
- Maintaining strength caliber in allotted new release structures
- Common wiring and grounding difficulties, in addition to ideas
- Site surveys and tool caliber monitoring
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THE DEFINITIVE advisor TO strength QUALITY--UPDATED AND accelerated electrical energy platforms caliber, 3rd version, is a whole, available, and updated advisor to choosing and fighting the motives of energy caliber difficulties. the knowledge is gifted with out heavy-duty equations, making it functional and simply readable for software engineers, commercial engineers, technicians, and gear designers.
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Devices in this group are sensitive to the minimum (or maximum) voltage magnitude experienced during a sag (or swell). The duration of the disturbance is usually of secondary importance for these devices. ■ Equipment sensitive to both the magnitude and duration of a voltage sag. This group includes virtually all equipment that uses electronic power supplies. Such equipment misoperates or fails when the power supply output voltage drops below specified values. Thus, the important characteristic for this type of equipment is the duration that the rms voltage is below a specified threshold at which the equipment trips.
The steps in this procedure are discussed in more detail throughout this chapter. 5 The latter term is defined as the minimum voltage magnitude a piece of equipment can withstand or tolerate without misoperation or failure. This is also known as the equipment voltage sag immunity or susceptibility limit. An area of vulnerability is determined by the total circuit miles of exposure to faults that can cause voltage magnitudes at an end-user facility to drop below the equipment minimum voltage sag ride-through capability.