IEC 60060-2 PDF
The text of the International Standard IEC was approved by ISO/ IEC Guide Uncertainty of measurement -. Find the most up-to-date version of IEC at Engineering also reflected by the older editions of the relevant standard IEC For good practice in HV test fields, this Sect. on HV measurement and uncertainty .
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For undated references, the latest edition of the referenced document including any amendments applies. The amplitude- frequency response outside this range is given for information only. In addition the step response of the measuring system shall be recorded according to Annex C. The main assumptions are as follows: Sufficient time should be allowed for all stages to charge before triggering the generator.
The interval between performance tests shall be ic on evaluation of past stability of the measuring system. Additional uncertainty contributions may originate when the digital recorder of system X is used in ranges different from those during the comparison. The limits on uncertainties of measurements stated in this standard apply to test levels stated in IEC Otherwise a value A: The user shall apply tests given in this standard to qualify their measuring system s.
NOTE 2 Design and construction 60600-2 any component of an approved measuring system should be such that it can withstand a disruptive discharge at the test object without any change in its characteristics.
NOTE 1 Other measurands for specific converting devices are in common use. From the convolution, the errors introduced by the measuring system for different wave shapes can be estimated Annex D.
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This third edition cancels and replaces the second edition, published inand constitutes a technical revision. The assigned operating time for measuring systems for direct and alternating voltage shall be specified. Often an input quantity X has to be adjusted or corrected to eliminate systematic effects of significant magnitude, e.
Alternatively, any user may choose to have the performance isc made by a National IVIetrology Institute or by a Calibration Laboratory accredited for the quantity to be calibrated. Copyright BIS has the copyright of all its publications. If the assigned scale factor of the measuring system is calculated from those of its components 5. Details of test or calculations shall be included in the record of performance.
Part 2 Evaluation of software used for the determination of the parameters of impulse waveforms Degree of Equivalence Identical to lEC Otherwise corrections according to lEC shall be applied based on recorded atmospheric 60060-2. NOTE 2 The frequency response outside the marked area, although not required, represents good practice.
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For details see also the related clauses for measurement of alternating voltages Clause 7. The comparison shall be complemented by a linearity test in iecc with 5. Special requirements on dynamic behaviour may be specified by the relevant technical committee. Alternatively it can be determined from the scale factors of the components 5. The amplitude-frequency response outside this range is given for information only.
NOTE 2 Some test facilities may choose to approve their measuring systems for only a single set of distances, or iiec a few sets or ranges 600602- distances.
In the majority of cases this term is interpreted as an expanded uncertainty U with the coverage factor being equal to 2. Disclosure to Promote the Right To 6060-2 Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest iiec the public, particularly disadvantaged iex and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of ice information in an accurate manner to the public.
In this adopted standard, reference appears iev certain International Standards for which Indian Standards also exist. Additional information on unit step-response measurements is given in Annex Kec. The complete linearity test shall be made within sufficiently short time that atmospheric conditions do not change and hence corrections need not be used.
Mj,g is the combined standard uncertainty of the mean front time error, Ar. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. NOTE 2 The environment in which a measuring system functions, its clearances to live and earthed structures and the presence of electric or magnetic fields may significantly affect the measurement result and its uncertainty.
For a new or repaired measuring system, performance checks shall be made at 60060–2 intervals to demonstrate its stability. This means that the rectangular distribution yields a larger standard uncertainty than the other distributions. The significant technical changes with respect to the previous edition are as follows: NOTE 4 In certain cases, it may be necessary to measure transient voltages superimposed on an alternating voltage.
The error of the reference measuring system is assumed to be negligible. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. The numerical value of j shall be rounded to the least significant figure that could be affected by the expanded uncertainty.
IVIeasuring systems with secondary attenuators may be calibrated on one setting only, provided that the load on the output of the converting device can be shown to be constant for all settings by other tests.
NOTE 2 A measuring system can have more than one assigned measurement range with different scale factors.