ДСТУ EN 62475:2022 Методи випробування сильним струмом. Визначення та вимоги до випробувальних струмів і вимірювальних систем (EN 62475:2010, IDT; IEC 62475:2010, IDT)



ДСТУ EN 62475:2022
(EN 62475:2010, IDT; IEC 62475:2010, IDT)

Методи випробування сильним струмом.
Визначення та вимоги до випробувальних струмів і вимірювальних систем

 
   
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

CONTENTS

1 Scope

2 Normative references

3 Terms and definitions

3.1 Measuring systems

3.2 Components of a measuring system

3.3 Scale factors

3.4 Rated values

3.5 Definitions related to the dynamic behaviour

3.6 Definitions related to uncertainty

3.7 Definitions related to tests on measuring systems

4 Procedures for qualification and use of a measuring system

4.1 General principles

4.2 Schedule of performance tests

4.3 Schedule of performance checks

4.4 Requirements for the record of performance

4.5 Operating conditions

4.6 Uncertainty

5 Tests and test requirements for an approved measuring system

5.1 General requirements

5.2 Calibration - Determination of the scale factor

5.3 Linearity test

5.4 Dynamic behaviour

5.5 Short-term stability

5.6 Long-term stability

5.7 Ambient temperature effect

5.8 Effect of nearby current paths

5.9 Software effect

5.10 Uncertainty calculation

5.11 Uncertainty calculation of time-parameter measurements (impulse currents only)

5.12 Interference test

5.13 Withstand tests

6 Steady-state direct current

6.1 Application

6.2 Terms and definitions

6.3 Test current

6.4 Measurement of the test current

6.5 Measurement of ripple amplitude

6.6 Test procedures

7 Steady-state alternating current

7.1 Application

7.2 Terms and definitions

7.3 Test current

7.4 Measurement of the test current

7.5 Test procedures

8 Short-time direct current

8.1 Application

8.2 Terms and definitions

8.3 Test currents

8.4 Measurement of the test current

8.5 Test procedures

9 Short-time alternating current.

9.1 Application

9.2 Terms and definitions

9.3 Test current

9.4 Measurement of the test current

9.5 Test procedures

10 Impulse currents

10.1 Application

10.2 Terms and definitions

10.3 Test current

10.4 Measurement of the test current

10.5 Test procedures

11 Current measurement in high-voltage dielectric testing

11.1 Application

11.2 Terms and definitions

11.3 Measurement of the test current

11.4 Test procedures

12 Reference measuring systems

12.1 General

12.2 Interval between subsequent calibrations of reference measuring systems

Annex A (informative) Uncertainty of measurement

Annex B (informative) Examples of the uncertainty calculation in high-current measurements

Annex C (informative) Step-response measurements

Annex D (informative) Convolution method for estimation of dynamic behaviour from step-response measurements

Annex E (informative) Constraints for certain wave shapes

Annex F (informative) Temperature rise of measuring resistors

Annex G (informative) Determination of r.m.s. values of short-time a.c. current.

Annex H (informative) Examples of IEC standards with high current tests

Bibliography