Cisco Systems 78-16356-01 manual Using Power Protection Devices, Surge Protectors

Chapter 5 Maintaining Your GSS

Using Power Protection Devices

–Adding machines

–Laser printers

–Facsimile machines

–Any other motorized equipment

In addition to these appliances, the greatest threats to the GSS power supply are surges or blackouts caused by electrical storms. Whenever possible, turn off the GSS and any peripherals and unplug them from their power sources

during thunderstorms.

If a blackout occurs—even a temporary one—while the GSS is turned on, turn it off immediately and disconnect it from the electrical outlet. Leaving the GSS on may cause problems when the power is restored; all other appliances left on in the area can create large voltage spikes that can damage the GSS.

Using Power Protection Devices

A number of devices are available that protect against power problems such as power surges, transients, and power failures. The following subsections describe some of these devices.

Surge Protectors

Surge protectors are available in a variety of types and usually provide a level of protection commensurate with the cost of the device. Surge protectors prevent voltage spikes, such as those caused during an electrical storm, from entering a GSS through the electrical outlet. Surge protectors, however, do not offer protection against brownouts, which occur when the voltage drops more than 20 percent below the normal AC line voltage level.

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