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 273
to give unity power factor.If this machine is to be operated as a rotary condenser, its fieldexcitation will have to be increased. If the machine is to carry aload of 70.7 kilowatts, and at the same time to take as large a lead-ing wattless current as possible (without, however, exceeding… … ALTERNATING-CURRENT MACHINERY 229 case the power component of the 100-ampere current will be 70.7amperes; the wattless component of the 100-ampere current willbe 70.7 amperes [lOO = 1/(70.7)2+ (70.7)^]; and the power factorof the over-excited motor will be 70.7 per cent. MOTOR TESTING The…
Electrical engineering
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