HP Integrity rx4640 Site Preparation Guide, Second Edition - HP Integrity rx46 - Page 21
Electrical Factors, Sources of Voltage Fluctuations
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General Site Preparation Guidelines Electrical Factors Sources of Voltage Fluctuations Voltage fluctuations, sometimes called glitches, affect the quality of electrical power. Common sources of these disturbances are: • Fluctuations occurring within the facility's distribution system • Utility service low-voltage conditions (such as sags or brownouts) • Wide and rapid variations in input voltage levels • Wide and rapid variations in input power frequency • Electrical storms • Large inductive sources (such as motors and welders) • Faults in the distribution system wiring (such as loose connections) • Microwave, radar, radio, or cell phone transmissions Chapter 2 21
General Site Preparation Guidelines
Electrical Factors
Chapter 2
21
Sources of Voltage Fluctuations
Voltage fluctuations, sometimes called glitches, affect the quality of electrical power. Common sources of these
disturbances are:
•
Fluctuations occurring within the facility’s distribution system
•
Utility service low-voltage conditions (such as sags or brownouts)
•
Wide and rapid variations in input voltage levels
•
Wide and rapid variations in input power frequency
•
Electrical storms
•
Large inductive sources (such as motors and welders)
•
Faults in the distribution system wiring (such as loose connections)
•
Microwave, radar, radio, or cell phone transmissions