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 325
is itself a very good insulator havingthe valuable property common to all liquid insulators, thatit is not permanently damaged by a puncture caused by lightning;for example, in this case the resistance of the oil is only momen-tarily broken down, the oil immediately flowing into the break… … Fig. 244. General Electric Core-Type Transformer PartlyAssembled 888 ALTERNATING-CURRENT MACHINERY 275 core and yoke punching, which are punched simultaneously fromthe whole sheet by a compound die. In assembling the transformer,care is taken to get the core and yoke punchings back into the same
Electrical engineering
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