International Library of Technology · Scranton, International Textbook Co. · leaf 298
fig. 7. air in the confined space, together with the cooling actionof the porcelain walls, extinguishes the arc. If the pressureto be handled is very high, a number of these cylinders areconnected in series, thus producing a long break. Fig. 7 (a)and (b) shows a switch of the plunger type that is…
Electrical engineering
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