Page 103 - Solar Power in Building Design The Engineer's Complete Design Resource
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LIGHTNING PROTECTION 73
not removed or isolated in time, the circuits will sustain an irreparable insulation
breakdown.
The main purpose of a surge arrestor device is, therefore, to conduct the maximum
amount of charge and reduce the voltage in the shortest possible time. Reduction of a volt-
age surge is referred to as clamping, shown in Figures 3.12 and 3.13. Voltage clamping in
Figure 3.12 Effect of
(a) lightning surge spike
(b) lightning surge spike
clamping, and (c) lightning
surge spike suppression.
Courtesy of Delta Surge Arrestor.
