IEC 61466-1:2016 is applicable to composite string insulator units for a.c. overhead lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators of similar design used in substations or on electric traction lines. This standard applies to string insulator units of composite type with ball, socket, tongue, clevis, Y-clevis or eye couplings, or a combination thereof. The object of this standard is to prescribe specified values for the mechanical characteristics of the composite string insulator units and define the main dimensions of the couplings to be used on the composite string insulator units in order to permit the assembly of insulators or fittings supplied by different manufacturers and to allow, whenever practical, interchangeability with existing installations. It also defines a standard designation system for composite string insulator units. This edition includes the following significant technical changes with respect to the previous edition: a) Addition of strength classes reflecting UHV practice; b) Inclusion of Corrigendum 1:2008 for Y fitting hole dimensions.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | compares BS EN 61466-1:2016 <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | TRACKED CHANGES Text example 1 \u2014 indicates added text (in green) <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | European foreword Endorsement notice <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | 1 Scope 2 Normative references 3 Mechanical and dimensional characteristics <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | 4 Plan of the standard 5 Insulator designation 6 Marking 7 Composite insulator units <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Table 1 \u2013 Insulator designation Figures Figure 1 \u2013 Designation letters of couplings <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Annex A (normative) Ball and socket couplings, N series A.1 General A.2 Dimensions A.3 Constructional features of the gauges A.4 Plan of the annex A.5 Designation <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | A.6 Gauges for ball couplings Figure A.1 \u2013 Dimensions of NOT GO gauges for ball couplings Figure A.2 \u2013 Dimensions of GO gauges for ball couplings Tables Table A.1 \u2013 Dimensions of NOT GO gauges for ball couplings <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Figure A.3 \u2013 Dimensions of GO and NOT GO gauges for ball couplings Table A.2 \u2013 Dimensions of GO gauges for ball couplings Table A.3 \u2013 Dimensions of GO and NOT GO gauges for ball couplings <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Figure A.4 \u2013 Dimensions of NOT GO gauges for ball couplings Table A.4 \u2013 Dimensions of NOT GO gauges for ball couplings <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | Figure A.6 \u2013 Dimensions of gauge for ball coupling size 22N Figure A.5 \u2013 Dimensions of gauges for ball coupling size 16N and 18N Table A.5 \u2013 Dimensions of gauges for ball couplings <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | A.7 NOT GO and GO Gauges for socket couplings Figure A.7 \u2013 Dimensions of NOT GO and GO gauges for socket couplings <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | Table A.6 \u2013 Dimensions of NOT GO and GO gauges for socket couplings <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Annex B (normative) Clevis and tongue couplings, N series B.1 General B.2 Dimensions B.3 Plan of the annex B.4 Designation <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | Figure B.1 \u2013 Dimensions of clevis and tongue couplings Table B.1 \u2013 Dimensions of clevis and tongue couplings <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | Annex C (normative) Y-clevis couplings C.1 General C.2 Dimensions C.3 Plan of the annex C.4 Designation Figure C.1 \u2013 Dimensions of Y-clevis gauges <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Figure C.2 \u2013 Dimensions of Y-clevis couplings and gauges Table C.1 \u2013 Dimensions of Y-clevis couplings <\/td>\n<\/tr>\n | ||||||
| 62<\/td>\n | Annex D (normative) Eye couplings D.1 General D.2 Dimensions D.3 Plan of the annex D.4 Designation <\/td>\n<\/tr>\n | ||||||
| 63<\/td>\n | Figure D.1 \u2013 Dimensions of eye couplings Table D.1 \u2013 Dimensions of eye couplings <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Composite string insulator units for overhead lines with a nominal voltage greater than 1000 V – Standard strength classes and end fittings<\/b><\/p>\n |