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 366
the primary. Impedance. One of the important constants of a transformeris its impedance ratio, that is, the ratio of the voltage consumed byits total internal impedance at full-load current to its rated full-load voltage. The impedance of a transformer is measured by short-circuiting one of its… … Amrrreter Trcins/orrr,^r Fig. 288. Diagram of Connections for Making Transformer Impedance Tesv the impedance is found as Z= -y- ohms. The value thus obtainedincludes the impedance of both primary and secondary windings. 325 312 ALTERNATING-CURRENT MACHINERY Impedance may be considered as constant…
Electrical engineering
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