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VR101S
Users Manual
44
Frequency Variation
• Major load increases
• Utility switching
How Power Line Disturbances Affect Your
Equipment
Depending on their degree and frequency, power line
disturbances can cause corrupted data or permanent
damage in sensitive electronic equipment. The following
list shows the effects that power line disturbances can
have on various types of sensitive electronic equipment.
Swells
• Discomfort from flickering lights
• Computer damage
• Degradation of power protection equipment
Sags
• Equipment shutdown
• Power-down circuitry in power supply operates
incorrectly
• Computer lock-ups
• Diminished speed of disk drives (data errors)
Dropouts/Outages
• Data loss
• Equipment downtime
• Computer lock-ups
• Clock timing errors
Transients
• Electronics damage (through bypassing protection
circuitry)
• Insulation breakdown in transformers and motors
• Data errors, data loss
Frequency Variation
• Incorrect clock timing
• Writing errors in any electronic writing device
(magnetic tapes, disk drives)