Garton-Daniels and Keystone lightning protective apparatus. (1921)
Electric Service Supplies Co. · Electric Service Supplies Co. · leaf 54
58 II 400 u 5 X 16 X 4tt 18?4 lbs. 18.70 50059 < < 500 i i 5 X X \\\ 2\y4 lbs. 27.50 50060 A M F 600 a 10 X 17 X 33 H lbs. 29.70 50061 u 800 it 10 X ISA X 373/4 lbs. 35.20 50062 (( 1,000 it 10 X X 4H 4834 lbs. 49.50 50063 «< 1,200 it 12 X 22 X 65 A lbs. 55.00 50064 < i 1,500 u 12 X 22 X… … Type R Disconnecting- Switch, 200 Ampere Capacity, End View of for 23,000 Volt Circuit Same Switch The general purpose of a disconnecting switch is to isolate apparatus froma live circuit for purpose of inspection, test, repair or replacement. Most ot the essential points regarding their uses are…
Lightning arresters · Ligtning protection for buildings · Lightning protection for structures · Lightning protection surge arresters and suppressors · Medium-voltage lightning arresters
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