Transient Voltages
Introduction
Protecting computer equipment can be confusing. There are many options in the marketplace,
not all of which will provide complete protection. This brochure is designed to help
define the best protection for your application. Transient Voltage Surge Suppression (or
TVSS) technologies protect microprocessor operations from damage due to switching surges
or surges associated with events like power outages.
Surge disturbances are very short-duration, high-magnitude voltage fluctuations. Because of
their short duration, they may not exhibit any immediately perceptible impact. They can be
caused by any switching operation on the electrical system (mechanical or electrical).
Surge damage can be: immediate, manifesting as failure, or cumulative, manifesting as
failure over time due to a weakened state. Surges can also cause data upset, occuring as
temporary malfunctions or system glitches that result in lost production, data or time.
TVSS devices are designed to keep harmful surge energy away from sensitive electronic
equipment. A TVSS device accomplishes this by diverting this energy to a path away from
critical equipment.
An investment in sensitive electronic equipment (stereos, televisions, appliances, computers
and control systems) can be significant. A properly specified TVSS device is cost-effective
insurance for this investment.
This brochure will walk you through the information you will need to know to select the
TVSS device for your application.
TVSS applications
TVSS devices can be installed individually for basic protection or they can be installed in a
network, designed to provide maximum benefit for a given electrical system. To determine
the best approach for your application, it is important to understand the different methods
of installation.
TVSS installation locations
When TVSS devices are installed at multiple locations, make sure that the clamping voltage and energy handling capability are correctly matched for the application. As shown in the diagram, the clamping level should be lower and the energy handling capability greater for the panelboard-mounted devicethan would be for an outletinstalled
device.
Hardwired TVSS devices are permanently installed by electricians at circuit breaker panels, transformers or main service switchgear. The intent of this application is to provide protection to several pieces of equipment. A TVSS installed at the service panel will provide protection for all “downstream” electrical components from all “upstream” surge disturbances.
Protecting computer equipment can be confusing. There are many options in the marketplace,
not all of which will provide complete protection. This brochure is designed to help
define the best protection for your application. Transient Voltage Surge Suppression (or
TVSS) technologies protect microprocessor operations from damage due to switching surges
or surges associated with events like power outages.
Surge disturbances are very short-duration, high-magnitude voltage fluctuations. Because of
their short duration, they may not exhibit any immediately perceptible impact. They can be
caused by any switching operation on the electrical system (mechanical or electrical).
Surge damage can be: immediate, manifesting as failure, or cumulative, manifesting as
failure over time due to a weakened state. Surges can also cause data upset, occuring as
temporary malfunctions or system glitches that result in lost production, data or time.
TVSS devices are designed to keep harmful surge energy away from sensitive electronic
equipment. A TVSS device accomplishes this by diverting this energy to a path away from
critical equipment.
An investment in sensitive electronic equipment (stereos, televisions, appliances, computers
and control systems) can be significant. A properly specified TVSS device is cost-effective
insurance for this investment.
This brochure will walk you through the information you will need to know to select the
TVSS device for your application.
TVSS applications
TVSS devices can be installed individually for basic protection or they can be installed in a
network, designed to provide maximum benefit for a given electrical system. To determine
the best approach for your application, it is important to understand the different methods
of installation.
TVSS installation locations
When TVSS devices are installed at multiple locations, make sure that the clamping voltage and energy handling capability are correctly matched for the application. As shown in the diagram, the clamping level should be lower and the energy handling capability greater for the panelboard-mounted devicethan would be for an outletinstalled
device.
Hardwired TVSS devices are permanently installed by electricians at circuit breaker panels, transformers or main service switchgear. The intent of this application is to provide protection to several pieces of equipment. A TVSS installed at the service panel will provide protection for all “downstream” electrical components from all “upstream” surge disturbances.
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