The Electrical Review, Том 171IPC Electrical-Electronic Press, 1962 |
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... Meters AN Act of Parliament was passed in 1936 which enabled house service electricity meters to be certified . All the meters that were then in service had to be certified within ten years . Up to this time there had been no ...
... Meters AN Act of Parliament was passed in 1936 which enabled house service electricity meters to be certified . All the meters that were then in service had to be certified within ten years . Up to this time there had been no ...
Сторінка 1
... Meters and Meter Testing " which was published in 1939. In this book the author stated : " A method of statistical analysis of the changes of meter accuracy after prescribed service carried out by one of the foregoing methods gives a ...
... Meters and Meter Testing " which was published in 1939. In this book the author stated : " A method of statistical analysis of the changes of meter accuracy after prescribed service carried out by one of the foregoing methods gives a ...
Сторінка 4
STANDARD DEVIATION OF METER ERRORS 3.0r 2.5 2.0 1.5- 1.0 0.5 0 200 400 NUMBER OF METERS TO 600 800 1,000 1,200 1,400 1,600 1,800 OBTAIN A GIVEN STANDARD ERROR OF S.D. OF 0.05 Fig . 7 If we construct a normal curve on these limits and if ...
STANDARD DEVIATION OF METER ERRORS 3.0r 2.5 2.0 1.5- 1.0 0.5 0 200 400 NUMBER OF METERS TO 600 800 1,000 1,200 1,400 1,600 1,800 OBTAIN A GIVEN STANDARD ERROR OF S.D. OF 0.05 Fig . 7 If we construct a normal curve on these limits and if ...
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