Result from lightning strikes or when electrical loads are
switched on or off. Can destroy electronic circuitry and
corrupt stored data. Solution:
A UPS, surge suppressor, or isolation transformer.
Surges and Overvoltages
Commonly caused by large electrical load changes and from
utility power line switching. Can seriously damage
power line conditioner or UPS with an
overvoltage compensation feature.
Sags and Brownouts
Commonly occur when motors are started up or by faults on
the utility power system. Can cause malfunctions or sudden
shutdowns in computer or process control equipment.
Power line conditioner or a UPS with an under voltage
Usually caused by faults on the utility power system. Can
cause unexpected and potentially damaging shutdown of all
A no-break UPS for critical computers or
networked systems that allows orderly equipment
shutdown or continuous operation as needed.
are power problems?
The best, Power National Power Laboratory's unprecedented
five-year Power Quality Study (1990-1995) estimated that the
average computer is subjected to 289 potentially damaging
power disturbances per year. That's more than one in every
What are the consequences of
Even minor power problems can cost you money. Any time a
power interruption delays work in progress, valuable time is
lost and lost time means lost money. More serious- and
expensive- is the fact that power problems can not only
corrupt critical data files, but can permanently damage
computers, networks and precision electronics.
How can power problems
Always connect your sensitive electronic equipment to power
conditioners, surge protectors, or, for the best protection
a UPS. Problems such as blackouts cannot be eliminated, but
the damage they cause can be prevented with a UPS, which
maintains a steady flow of power until the system can be
safely, automatically shut down.