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.<\/p>\n
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| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3.1 Definitions related to characteristics of discharges 3.2 Definitions relating to characteristics of the test voltage <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 3.3 Definitions relating to tolerance and uncertainty 3.4 Definitions relating to statistical characteristics of disruptive-discharge voltage values <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 3.5 Definitions relating to classification of insulation in test objects <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4 General requirements 4.1 General requirements for test procedures 4.2 Arrangement of the test object in dry tests <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.3 Atmospheric corrections in dry tests Figures Figure 1 \u2013 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 <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Figure 2 \u2013 k as a function of the ratio of the absolute humidity h to the relative air density \u03b4 (see 4.3.4.2 for limits of applicability) <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Tables Table 1 \u2013 Values of exponents, m for air density correction and w for humidity correction, as a function of the parameter g <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figure 3 \u2013 Values of exponents m and w <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure 4 \u2013 Absolute humidity of air as a function of dry- and wet-bulb thermometer readings <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 4.4 Wet tests <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 4.5 Artificial pollution tests 5 Tests with direct voltage 5.1 Definitions for direct voltage tests Table 2 \u2013 Precipitation conditions for standard procedure <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 5.2 Test voltage <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 5.3 Test procedures <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 6 Tests with alternating voltage 6.1 Definitions for alternating voltage tests 6.2 Test Voltage <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 6.3 Test procedures <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 7 Tests with lightning-impulse voltage 7.1 Definitions for lightning-impulse voltage tests Figure 5 \u2013 Full lightning-impulse voltage <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Figure 6 \u2013 Test voltage function <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure 7 \u2013 Full impulse voltage time parameters <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Figure 8 \u2013 Voltage time interval Figure\u00a09 \u2013 Voltage integral <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Figure 10 \u2013 Lightning-impulse voltage chopped on the front <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Figure 11 \u2013 Lightning-impulse voltage chopped on the tail Figure 12 \u2013 Linearly rising front chopped impulse <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | 7.2 Test voltage Figure 13 \u2013 Voltage\/time curve for impulses of constant prospective shape <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | 7.3 Test procedures <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | 8 Tests with switching-impulse voltage 8.1 Definitions for switching-impulse voltage tests <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Figure 14 \u2013 Switching-impulse voltage <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | 8.2 Test voltage <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | 8.3 Test procedures 9 Tests with combined and composite voltages 9.1 Definitions for combined- and composite-voltage tests <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Figure\u00a015 \u2013 Circuit for a combined voltage test <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Figure\u00a016 \u2013 Schematic example for combined and composite voltage <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Figure 17 \u2013 Circuit for a composite voltage test <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | 9.3 Composite test voltages 9.4 Test procedures Figure 18 \u2013 Definition of time delay \u0394t <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Annex A (informative) Statistical treatment of test results <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Figure A.1 \u2013 Example of a multiple-level (Class 1) test <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Figure A.2 \u2013 Examples of decreasing and increasing up-and-down (Class 2) tests for determination of 10\u00a0% and 90\u00a0% disruptive-discharge probabilities respectively <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | Figure A.3 \u2013 Examples of progressive stress (Class 3) tests <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Table A.1\u2013 Discharge probabilities in up-and-down testing <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | Annex B (normative) Procedures for calculation of parameters of standard lightning-impulse voltages with superimposed overshoot or oscillations <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | Figure B.1 \u2013 Recorded and base curve showing overshoot and residual curve Figure B.2 \u2013 Test voltage curve (addition of base curve and filtered residual curve) <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Figure B.3 \u2013 Recorded and test voltage curves <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Annex C (informative) Guidance for implementing software for evaluation of lightning-impulse voltage parameters <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | Annex D (informative) Background to the introduction of the test voltage factor for evaluation of impulses with overshoot <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | Figure D.1 \u2013 \u201cEffective\u201d test voltage function in IEC\u00a060060-1:1989 <\/td>\n<\/tr>\n | ||||||
| 67<\/td>\n | Figure D.2 \u2013 Representative experimental points from European experiments and test voltage function <\/td>\n<\/tr>\n | ||||||
| 70<\/td>\n | Annex E (informative) The iterative calculation method in the converse procedure for the determination of atmospheric correction factor <\/td>\n<\/tr>\n | ||||||
| 71<\/td>\n | Figure E.1 \u2013 Atmospheric pressure as a function of altitude Table E.1 \u2013 Altitudes and air pressure of some locations <\/td>\n<\/tr>\n | ||||||
| 72<\/td>\n | Table E.2 \u2013 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 <\/td>\n<\/tr>\n | ||||||
| 74<\/td>\n | Table E.3 \u2013 Initial and converged Kt values for the example of the standard phase-to-earth a.c. test voltage of 395 kV <\/td>\n<\/tr>\n | ||||||
| 75<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" High-voltage test techniques – General definitions and test requirements<\/b><\/p>\n |