Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 213
Fig. 56. General Type of Oil Switch with Cover RemovedCourtesy of General Electric Company SO that switches can be given a higher rating if operated by timelimit relays which will prevent their opening until after the firstgreat surge of current. Types. Loio Voltage. Oil switches are built for use…
Electrical engineering
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