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ArresterWorks
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Calculating the Value of a
Distribution Arrester
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Conductor
Height
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meters
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System Width
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meters
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Ground flash density
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flashes/km2/yr
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Installed
Transformer Cost
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dollars
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Length of Span
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meters
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Collection Area
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spans
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Evaluation Period
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years
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Flash Collection Rate N
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flashes/100km/yr
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Strike Rate per
span
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flashes/span/year
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Annual Strike Rate for Collection Area
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flashes/area/year
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Years between
strikes to collection area
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years/arrester operation
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number of saves
over life of arrester
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Savings over the
Evaluation Period
or
Value of the Arrester
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Dollars
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