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BS 923-4:1980

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Guide on high-voltage testing techniques Application guide for measuring devices

Available format(s)

Hardcopy , PDF

Superseded date

15-08-1995

Language(s)

English

Published date

28-11-1980

National foreword
Cooperating organizations
Section one - General
1. Scope
2. Object
Section two - Measurement of direct voltages
3. General
4. Systems for measuring the steady-state value of
     direct voltages
5. Systems for measuring ripple voltage
6. Determination of voltage ratios and scale factors
7. Determination of the amplitude-frequency response
     of a measuring system
8. Possible sources of error and precautions
Section three - Measurement of alternating voltages
9. General
10. Systems for measuring the amplitude of alternating
     voltages
11. Systems for measuring the amplitude of harmonics
12. Determination of voltage ratios and scale factors
13. Determination of the amplitude-frequency response
     of a measuring system
14. Possible sources of errors and precautions
Section four - Measurement of impulse voltages
15. General
16. Measuring system components
16.1 Voltage divider
16.2 High voltage lead
16.3 Damping resistor
16.4 Oscilloscope
16.5 Peak voltmeter
16.6 Coaxial cable and matching devices
16.7 Earth returns
17. Determination of voltage divider ratios and scale
     factors
18. Response of a measuring system
19. Experimental procedure for measuring the unit step
     response
20. Determination of the response parameters from step
     response oscillograms
20.1 Determination of the virtual starting point 0'
       and unit amplitude
20.2 Determination of the response time T
20.3 Determination of the initial distortion time To
20.4 Determination of the response time Tt of the
       system without high voltage lead
20.5 Determination of the resonant frequency range
20.6 Determination of partial response time Ta
21. Determination of the response parameters by the
     sphere-gap method
21.1 Determination of the response time T
21.2 Determination of the partial response time Ta or
       Ta'
21.3 Determination of the response time Tt of the
       system without high voltage lead
21.4 Determination of the resonant frequency range
22. Relation of response parameters to measuring errors
22.1 Errors caused by response time T
22.2 Errors caused by partial response time Ta
22.3 Errors caused by initial distortion time To
23. Criteria relating to corrections
23.1 Conditions for measurements to be sufficiently
       accurate without corrections
23.2 Conditions for correcting measurements and limits
       of application of the corrections
23.3 Procedures for cases when recorded oscillations
       exceed permitted level
24. Evaluation of a measuring system by comparison
     method
25. Various sources of errors, precautions
25.1 Divider ratio for long impulse duration
25.2 Proximity effects
25.3 Corona effects, precautions
25.4 Disturbance level check
Section five - Measurement of impulse currents
26. General
27. Commonly used measuring systems
27.1 Measuring system components
27.2 Step response of current measuring systems
28. Precautions
Section six - Measuring errors
29. Statistical evaluation
Appendix A - Resistor dividers
Appendix B - Mathematical basis for response time T
Appendix C - Procedure to determine if oscillations are
present across the test object
Figures

Guidance on the use of measuring devices and their calibration so that the requirements of Part 3 may be met in the performance of the test procedures of Part 2.

Committee
PEL/42
DevelopmentNote
Supersedes BS 923(1972) (05/2005)
DocumentType
Standard
Pages
44
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
IEC 60060-4:1977 Identical

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BS EN 61037:1993 Electricity metering. Tarriff and load control. Particular requirements for electronic ripple control receivers
BS EN 61083-1:2001 Digital recorders for measurements in high-voltage impulse tests Requirements for instruments
BS 923-1:1990 Guide on high-voltage testing techniques General
BS EN 61011:1993 Electric fence energizers. Safety requirements for mains-operated electric fence energizers
BS EN 60343:1993 Recommended test methods for determining the relative resistance of insulating materials to breakdown by surface discharges
BS 6647:1985 Guide to oscilloscopes and peak voltmeters for impulse tests
BS EN 60156:1996 Insulating liquids. Determination of the breakdown voltage at power frequency. Test method

IEC 60060-2:2010 High-voltage test techniques - Part 2: Measuring systems
IEC 60060-3:1976 High-voltage test techniques - Part 3: Measuring devices
IEC 60052:2002 Voltage measurement by means of standard air gaps
IEC 60186:1987 Voltage transformers

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