IEC 60243-1:2013 provides test methods for the determination of short-time electric strength of solid insulating materials at power frequencies between 48 Hz and 62 Hz. This standard does not cover the testing of liquids and gases, although these are specified and used as impregnates or surrounding media for the solid insulating materials being tested. NOTE: Methods for the determination of breakdown voltages along the surfaces of solid insulating materials are included.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 3 Terms and definitions 4 Significance of the test <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 5 Electrodes and specimens 5.1 General 5.2 Tests perpendicular to the surface of non-laminated materials and normal tolaminate of laminated materials 5.2.1 Boards and sheet materials, including pressboards, papers, fabrics and films <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5.2.2 Tapes, films and narrow strips 5.2.3 Flexible tubing and sleeving 5.2.4 Rigid tubes (having an internal diameter up to and including 100 mm) <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.2.5 Tubes and hollow cylinders (having an internal diameter greater than 100 mm) 5.2.6 Cast and moulded materials <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5.2.7 Shaped solid pieces 5.2.8 Varnishes 5.2.9 Filling compounds 5.3 Tests parallel to the surface of non-laminated materials and parallel to the laminate of laminated materials 5.3.1 General 5.3.2 Parallel plate electrodes <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5.3.3 Taper pin electrodes 5.3.4 Parallel cylindrical electrodes 5.4 Test specimens 5.5 Distance between electrodes <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6 Conditioning before tests 7 Surrounding medium 7.1 General 7.2 Tests in air at elevated temperature 7.3 Tests in liquids <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 7.4 Tests in solid materials 8 Electrical apparatus 8.1 Voltage source 8.2 Voltage measurement <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 9 Procedure 10 Mode of increase of voltage 10.1 Short-time (rapid-rise) test <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 10.2 20 s step-by-step test 10.3 Slow rate-of-rise test (120 s… 240 s) Table 1 \u2013 Increments of voltage increase <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 10.4 60 s step-by-step test 10.5 Very slow rate-of-rise test (300 s… 600 s) 10.6 Proof tests 11 Criterion of breakdown <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 12 Number of tests 13 Report <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Figures Figure 1 \u2013 Electrode arrangements for tests on boards and sheets perpendicular to the surface <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Figure 2 \u2013 Typical example of electrode arrangement for tests on tapes perpendicular to the surface (see 5.2.2) Figure 3 \u2013 Electrode arrangement for tests perpendicular to the surface on tubes and cylinders with internal diameter greater than 100 mm <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Figure 4 \u2013 Electrode arrangement for tests on casting and moulding materials(diameter of the spherical electrodes: d = (20 \u00b1 0,1) mm) Figure 5 \u2013 Electrode arrangement for test on shaped insulating parts (see 5.2.7) <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Figure 6 \u2013 Electrode arrangement for tests parallel to the surface (and along the laminae, if present) <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Figure 7 \u2013 Electrode arrangement for tests parallel to the surface (and along the laminae if present) <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Figure 8 \u2013 Arrangement for tests parallel to the laminae for boards more than 15\u00a0mm thick with parallel cylindrical electrodes (see 5.3.4) <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Annex\u00a0A (informative)Treatment of experimental data <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Electric strength of insulating materials. Test methods – Tests at power frequencies<\/b><\/p>\n |