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BS EN 60060-1:2010:2011 Edition

BS EN 60060-1:2010:2011 Edition

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High-voltage test techniques – General definitions and test requirements

Published By Publication Date Number of Pages
BSI 2011 78
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IEC 60060-1:2010 applies to dielectric tests with alternating voltage; dielectric tests with direct voltage; dielectric tests with impulse voltage and dielectric tests with combinations of the above. This document is applicable to tests on equipment having its highest voltage for equipment Um above 1 kV. The third edition cancels and replaces the second edition, published in 1989, and constitutes a technical revision. The major technical changes with respect to the previous edition are as follows: – artifical pollution test procedures were removed as they are now described in IEC 60507, – measurement of impulse current has been transferred to a new standard on current measurement (IEC 62475), – the atmospheric correction factors are now presented as formulas.

PDF Catalog

PDF Pages PDF Title
6 English
CONTENTS
9 1 Scope
2 Normative references
3 Terms and definitions
10 3.1 Definitions related to characteristics of discharges
3.2 Definitions relating to characteristics of the test voltage
11 3.3 Definitions relating to tolerance and uncertainty
3.4 Definitions relating to statistical characteristics of disruptive-discharge voltage values
12 3.5 Definitions relating to classification of insulation in test objects
13 4 General requirements
4.1 General requirements for test procedures
4.2 Arrangement of the test object in dry tests
14 4.3 Atmospheric corrections in dry tests
Figures
Figure 1 – Recommended minimum clearance D of extraneous live or earthed objects to the energized electrode of a test object, during an a.c. or positive switching impulse test at the maximum voltage U applied during test
16 Figure 2 – k as a function of the ratio of the absolute humidity h to the relative air density δ (see 4.3.4.2 for limits of applicability)
17 Tables
Table 1 – Values of exponents, m for air density correction and w for humidity correction, as a function of the parameter g
18 Figure 3 – Values of exponents m and w
19 Figure 4 – Absolute humidity of air as a function of dry- and wet-bulb thermometer readings
20 4.4 Wet tests
21 4.5 Artificial pollution tests
5 Tests with direct voltage
5.1 Definitions for direct voltage tests
Table 2 – Precipitation conditions for standard procedure
22 5.2 Test voltage
23 5.3 Test procedures
24 6 Tests with alternating voltage
6.1 Definitions for alternating voltage tests
6.2 Test Voltage
27 6.3 Test procedures
28 7 Tests with lightning-impulse voltage
7.1 Definitions for lightning-impulse voltage tests
Figure 5 – Full lightning-impulse voltage
30 Figure 6 – Test voltage function
31 Figure 7 – Full impulse voltage time parameters
32 Figure 8 – Voltage time interval
Figure 9 – Voltage integral
33 Figure 10 – Lightning-impulse voltage chopped on the front
34 Figure 11 – Lightning-impulse voltage chopped on the tail
Figure 12 – Linearly rising front chopped impulse
35 7.2 Test voltage
Figure 13 – Voltage/time curve for impulses of constant prospective shape
37 7.3 Test procedures
38 8 Tests with switching-impulse voltage
8.1 Definitions for switching-impulse voltage tests
39 Figure 14 – Switching-impulse voltage
40 8.2 Test voltage
41 8.3 Test procedures
9 Tests with combined and composite voltages
9.1 Definitions for combined- and composite-voltage tests
42 Figure 15 – Circuit for a combined voltage test
43 Figure 16 – Schematic example for combined and composite voltage
44 Figure 17 – Circuit for a composite voltage test
45 9.3 Composite test voltages
9.4 Test procedures
Figure 18 – Definition of time delay Δt
47 Annex A (informative) Statistical treatment of test results
50 Figure A.1 – Example of a multiple-level (Class 1) test
51 Figure A.2 – Examples of decreasing and increasing up-and-down (Class 2) tests for determination of 10 % and 90 % disruptive-discharge probabilities respectively
52 Figure A.3 – Examples of progressive stress (Class 3) tests
54 Table A.1– Discharge probabilities in up-and-down testing
56 Annex B (normative) Procedures for calculation of parameters of standard lightning-impulse voltages with superimposed overshoot or oscillations
57 Figure B.1 – Recorded and base curve showing overshoot and residual curve
Figure B.2 – Test voltage curve (addition of base curve and filtered residual curve)
58 Figure B.3 – Recorded and test voltage curves
61 Annex C (informative) Guidance for implementing software for evaluation of lightning-impulse voltage parameters
64 Annex D (informative) Background to the introduction of the test voltage factor for evaluation of impulses with overshoot
65 Figure D.1 – “Effective” test voltage function in IEC 60060-1:1989
67 Figure D.2 – Representative experimental points from European experiments and test voltage function
70 Annex E (informative) The iterative calculation method in the converse procedure for the determination of atmospheric correction factor
71 Figure E.1 – Atmospheric pressure as a function of altitude
Table E.1 – Altitudes and air pressure of some locations
72 Table E.2 – Initial Kt and its sensitivity coefficients with respect to U50 for the example of the standard phase-to-earth a.c. test voltage of 395 kV
74 Table E.3 – Initial and converged Kt values for the example of the standard phase-to-earth a.c. test voltage of 395 kV
75 Bibliography

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BS EN 60060-1:2010
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