Comparative tests of induction wattmeters . Fort Wajme Induction V/attmeter Type W. Data showing the effect of change of load at normalvoltage and frequency and 75% power = voltsTemperature = 640p,Power factor = .727Frequency = 60 cycles/sec. Watt-hours Watt-hours % Current measured registered registered 103 86 68 51 33 26 21 13,6 13 7 Fort Wayne Induction Wattmeter Tjrpe W, Data showing the effect of change of load at normalvoltage and

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Comparative tests of induction wattmeters . Fort Wajme Induction V/attmeter Type W. Data showing the effect of change of load at normalvoltage and frequency and 75% power = voltsTemperature = 640p,Power factor = .727Frequency = 60 cycles/sec. Watt-hours Watt-hours % Current measured registered registered 103 86 68 51 33 26 21 13,6 13 7 Fort Wayne Induction Wattmeter Tjrpe W, Data showing the effect of change of load at normalvoltage and frequency and 50/^ power factor. Potential = 113,2 volts oTemperature = 63 P. Power factor = .491 Frequency = 60 cycles/sec. Current Watt-hoursmeasured Watt-hoursregistered registered 68 68 58 46,6 46 56,0 56 21 4,03 19,5 17 12 9 fCQ 5,3 4 Fort Wayne Induction Vattraeter Type YT, Data showing the effects of change of load at normalvoltage and frequency, and unity power = 110 voltsTemperattire = 82,3 factor = ,99Frequency li = 60 cycles/sec. Current Watt-hoursmeasured Watt-hoursregistered registered 139 116,2 115 91 65 43 35 26 17 9

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