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In most countries where electronic equipment is used, the effective AC utility voltage is 110 to 120 volts; the peak voltage is on the order of plus-or-minus 160 to 170 volts at a frequency of 60 Hertz. But transients, which arise from various causes, commonly reach peak levels of several hundred volts. These pulses are of short duration, measured in microseconds (units of 10-6 second), but in that time, they can cause hardware to malfunction. The worst type of transient occurs when lightning strikes in the vicinity (it is not necessary for a power line to be directly hit). Such a "spike" can peak at thousands of volts and cause permanent damage to equipment. A surge suppressor prevents the peak AC voltage from going above a certain threshold such as plusor- minus 200 volts. The power line is effectively short-circuited to electrical ground for transient pulses exceeding the threshold, while the flow of normal 60-Hz current is unaffected. Surge suppressors should be used as a matter of habit with all semiconductor-based electronic and computer hardware. But the suppressor should not be relied upon to provide protection against lightning-induced transients.
Dimensions
H 5.2" x W 5.0" x D1.7"
H 132 mm x W 127 mm x D 43.2 mm
Space between mounting holes
4.25" (108 mm)
Size of knockouts
0.75" (19 mm)
Weight
0.4 lbs. ea. (180 g)
Operating Temperature
-40°C to +55°C (-40°F to 131°F)
Internal Connectors
RJ45
Capacity
1500J peak pulse energy dissipation
with 10/10000µs w
aveform
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