. Garton-Daniels and Keystone lightning protective apparatus. . Oscillogram B Arrester—Type EX, Form 3, rated for 2500 Volt 3 phase grounded Y Voltage— current flow— of current flow—.22 cycle or .0036 Oscillogram C Arrester—Type EX, Form 3, rated for 2500 Volt 3 phase grounded Y Voltage—Jfl 50. Dynamic current flew— amperes. Duration of current flow—.3k cycle or .0056 second. circuit, it was operating under conditions equivalent lo the worst that couldoccur in actual service. Here the current flow of amperes was exting
. Garton-Daniels and Keystone lightning protective apparatus. . Oscillogram B Arrester—Type EX, Form 3, rated for 2500 Volt 3 phase grounded Y Voltage— current flow— of current flow—.22 cycle or .0036 Oscillogram C Arrester—Type EX, Form 3, rated for 2500 Volt 3 phase grounded Y Voltage—Jfl 50. Dynamic current flew— amperes. Duration of current flow—.3k cycle or .0056 second. circuit, it was operating under conditions equivalent lo the worst that couldoccur in actual service. Here the current flow of amperes was extinguishedin .(Xb6 second, or in approximately one-third of a cycle. The irregular voltage wave noted was probablv due to factors in thedesign of the transformer used for the test. These oscillograms show clearly not only the positive action of the Ex-pulsion Arrester, but also the fact that during operation they produce no harm-Jul effects on the circuit to which connected—two factors which should alwaysbe borne in mind in the selection of lightning protective apparatus 14 ELECTRIC SERVICE SUPPLIES COMPANY KEYSTONE LIGHTNING ARRESTERS Installation Expulsion Arresters may be freely employed in protecting all classes ofelectrical apparatus,
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdivisio, bookyear1921
