IEC 60372:2020 is applicable to locking devices used with ball and socket couplings of string insulator units and used with the corresponding metal fittings standardized in IEC 60120, when they are supplied separately.The object of this document is – to define the shapes and some standard dimensions for locking devices, – to define the test methods for locking devices, – to state the acceptance conditions for supply, – to give other dimensions for guidance of manufacturing only. This fourth edition cancels and replaces the third edition published in 1984. This edition includes the following significant technical changes with respect to the previous edition: a. Two new designated size of couplings, 36 and 40, were introduced; b. the relevant content of the 28B W-clip was deleted; c. Annex A is informative, Annex B is normative, Annex C is informative.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Shapes and dimensions 4.1 General 4.2 Shapes of the locking devices 4.2.1 Split-pin 4.2.2 W-clip 4.3 Dimensions of locking devices 4.3.1 The split-pins (standard and alternative type) <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.3.2 The W-clips Figures Figure 1 \u2013 Shape of split-pins Tables Table 1 \u2013 Dimensions of the split-pins <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5 Test 5.1 Classification of tests Figure 2 \u2013 Shape of W-clips Table 2 \u2013 Dimensions of W-clips <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5.2 Qualification tests 5.2.1 Test items and the samples 5.2.2 Hardness test 5.2.3 Verification of resistance of bending <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.2.4 Corrosion resistance test Figure 3 \u2013 Arrangement of verification of resistance of bending Table 3 \u2013 Radii of verification of resistance of bending <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.3 Sample tests and sampling 5.3.1 Sample tests 5.3.2 Sampling Table 4 \u2013 Size of the sample and acceptance number Ac <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.3.3 Visual examination 5.3.4 Verification of dimensions Figure 4 \u2013 Verification of L Table 5 \u2013 Specifications of K and D4 in Figure 4 <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.3.5 Hardness test 5.3.6 Verification of resistance to bending (for split-pins only) 5.4 Re-test procedure <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex A (normative)Gauge for W-clips Figure A.1 \u2013 Gauge for W-clips <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure A.2 \u2013 Symbol marks for dimensions of W-clips Table A.1 \u2013 Dimensions of the gauge for W-clips <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Annex B (normative)Other dimensions of split-pins Figure B.1 \u2013 Other dimensions of the split-pins Table B.1 \u2013 Other dimensions of the split-pins <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex C (informative)Method of using the locking devices C.1 Overview C.2 Method of using the locking devices \u2013 Split-pin C.3 Method of using the locking devices \u2013 W-clip Figure C.1 \u2013 Positions of split-pin Figure C.2 \u2013 Positions of W-clip <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Locking devices for ball and socket couplings of string insulator unit. Dimensions and tests<\/b><\/p>\n |