Products
Category Name
Surge and Lightning Protection
A surge is a transient electrical fluctuation that happens in a fraction of a second and can cause serious
damage to electronic and electro mechanical equipment.
They can be caused by lightning strikes and local power utility company "spikes" which can enter your
business or home through the electrical system ie. cable television, telephone wiring etc and attack
any electrical equipment attached to them.
Topologies
Many people believe the most important issue is power loss or blackouts, yet the truth is that the
majority of power faults are caused by power surges or noise transients.
Power surges and noise transients are caused by:
- Lightning strikes
- Substation switching
- Variable speed drives
- Electric motors
These can be destructive to electronic equipment.
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Which Powerware UPS with Power Filter
Power filter & Surge Diverter Surge Ratings Charts
Hardwired Surge Diverters
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Surge diverters are single-stage, shunt connected devices, which are generally used for point-of-entry
(main switchboard) protection. They provide coarse protection that is suitable for the protection
of nonsensitive equipment.
Hardwired Surge Filters
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Since surge filters are connected in series, they must be suitably rated to carry the amount of
electrical current that your equipment is using.
NPS provide a range of surge filters with load ratings from as low as 3 amp
(typically used to protect a computer or a PLC) all the way up to 2000 amp (typically used to
protect an entire installation. The cost and size of surge filters changes depending upon
the load current rating.
To achieve effective and economical power line surge protection, NPS recommend a staged approach,
with a surge diverter installed at the main switchboard to provide coarse protection for all
equipment, and surge filters installed downstream to protect critical equipment. By only protecting
critical equipment with surge filters the overall size and cost of the protection is minimised.
Equipment is considered to be critical if it is sensitive to surge (ie it contains a microprocessor
or other sensitive solid-state electronics) and the cost of downtime of the equipment is unacceptably
high or the equipment is relatively expensive to replace.
Softwired Surge Filters
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