AS 62052.11:2018 pdf free
AS 62052.11:2018 pdf free.Electricity metering equipment (ac) – General requirements, tests and test conditions
term used to define a particular design of meter, manufactured by one manufacturer, having:
a) similar metrological properties;
b) the same uniform construction of parts determining these properties;
c) the same ratio of the maximum current to the reference current;
d) the same number of ampere-turns for the current winding at reference current and the same number of turns per volt for the voltage winding at reference voltage.
The type may have several values of reference current and reference voltage.
Meters are designated by the manufacturer by one or more groups of letters or numbers, or a combination of letters and numbers. Each type has one designation only.
NOTE 1 The type is represented by the sample meter(s) intended for the type tests, whose characteristics (reference current and reference voltage) are chosen from the values given in the tables proposed by the manufacturer.
NOTE 2 Where the number of ampere-turns would lead to a number of turns other than a whole number, the product of the number of turns of the windings by the value of the basic current may differ from that of the sample meter(s) representative of the type.
It is advisable to choose the next number immediately above or below in order to have whole numbers of turns.For this reason only may the number of turns per volt of the voltage windings differ, but by not more than 20 % from that of the sample meters representative of the type.
extreme conditions which an operating meter can withstand without damage and without degradation of its metrological characteristics when it is subsequently operated under its rated operating conditions. For this range, relaxed accuracy requirements may be specified.
extreme conditions which an operating meter can withstand without damage and without degradation of its metrological characteristics when it is subsequently operated under its rated operating conditions.AS 62052.11 pdf free download.
