PQR
Series Model D52
Page 47
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V2.1
IMPULSE
(SPIKE, SURGE)
The spike is a surge of energy superimposed on the AC
line, usually with a relatively short duration. Spikes can
potentially have the most serious effects on electronic
equipment due to their high energy content, and the
Integrated Circuits inability to absorb the energy. Many
events can cause spikes, such as lightning bolts, utility
grid switching, switching inductive loads on and off, and
SCR (Silicon Control Rectifier) dimmers. Although
properly designed equipment has some built-in spike
protection, repeated hits by high energy spikes can
eventually render these components useless.
Figure PT 4 - Impulse
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