Electrical Power

Electrical power is something most of us take for granted, but large portions of the world live without dependable electrical power. Even in areas are subject to line noise or might suffer from electromagnetic interference (EMI). Electrical motors and other electronic devices can cause EMI. You might have noticed that florescent lights can also cause electrical problems; this phenomenon is known as radio frequency interference (RFI). Table 2.3 lists some other power anomalies.

Table 2.3. Power Faults and Descriptions

Fault

Description

Blackout

Prolonged loss of power

Brownout

Power degradation that is low and less than normal

Sag

Momentary low voltage

Fault

Momentary loss of power

Spike

Momentary high voltage

Surge

Prolonged high voltage

Noise

Interference superimposed onto the power line

Transient

Noise disturbances of a short duration

Inrush

Initial surge of power at startup

Luckily, power conditioners, surge protectors, and uninterruptible power supplies can provide the clean power needed to keep business going.

Uninterruptible Power Supply (UPS)

Since computers have become an essential piece of technology, downtime of any significant length of time can be devastating to an organization. Power outages can happen, and businesses must be prepared to deal with the situation. Uninterruptible power supplies are one of the primary means of meeting this challenge. Two categories of UPS exist:

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