| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | BRITISH STANDARD <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 3<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Foreword Foreword to amendment A1 Contents <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | General Scope Normative references General principles for the application of surge arresters <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | General procedure for the selection of surge arresters Polluted housing arrester withstand <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Flow diagram for the selection of surge arresters <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Non-linear resistor type gapped surge arresters according\ufffdto IEC\ufffd99-1 Characteristic data of gapped surge arresters General Rated voltage Protective levels Nominal discharge current Long duration discharge class Pressure relief class <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Pollution withstand characteristics Live washing characteristics Selection of gapped surge arresters phase-to-earth Rated voltage <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Nominal discharge current <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Long duration discharge capability Relationship between long duration discharge class and transmission line\ufffdcharacteristics (see\ufffdTab… Pressure relief class <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Gapless metal-oxide surge arresters according to IEC\ufffd99-4 Characteristic data of gapless metal-oxide surge arresters General Continuous operating voltage Rated voltage Nominal discharge current Protective levels Line discharge class Pressure relief class <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Pollution withstand characteristics Live washing characteristics Selection of gapless metal-oxide surge arresters phase-to-earth Continuous operating voltage Rated voltage <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Nominal discharge current and line discharge class <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Pressure relief class <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Application of arresters Principle of insulation co-ordination Protection from slow-front overvoltages <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Protection from lightning overvoltages General <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Simplified method for lightning protection Installations without earth-mat (distribution systems) Installations with earth mat (substations) Schematic diagram for the surge arrester connection to the protected object <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Factor Examples for protective zones calculated by formula\ufffd10 for open air substations <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Surge arresters for special application Surge arresters for transformer neutrals General Surge arresters for fully insulated transformer neutrals Surge arresters for neutrals of transformers with non-uniform insulation Surge arresters between phases <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Surge arresters for rotating machines Further special applications of surge arresters <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Surge arresters for abnormal service conditions <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Diagnostic indicators of metal-oxide surge arresters in service General Fault indicators Disconnectors Surge counters Monitoring spark gaps <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Temperature measurements Leakage current measurements of metal-oxide arresters <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Typical leakage current of a non-linear metal-oxide resistor in laboratory conditions Typical leakage currents of arresters in service conditions <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Typical voltage-current characteristics for non-linear metal-oxide resistors <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Typical normalized voltage dependence at +20 \u00baC Typical normalized temperature dependence at <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Measurement of the total leakage current <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Influence on total leakage current by increase in resistive leakage current Measurement of the resistive leakage current or the power loss <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Method Al – Using a voltage signal as reference Method A2 \u2014 Compensating the capacitive component by using a voltage signal Remaining current after compensation by capacitive current at <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Method A3 \u2014 Compensating the capacitive component without using a voltage signal Method A4 \u2014 Capacitive compensation by combining the leakage current of the three phases Method Bl \u2014 Third order harmonic analysis <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Error in the evaluation of the leakage current third harmonic for different phase angles of syste… Method B2 \u2014 Third order harmonic analysis with compensation for harmonics in the voltage Method B3 \u2014 First order harmonic analysis Method C \u2014 Direct determination of the power losses <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Leakage current information from the arrester manufacturer Typical information for conversion to \u201cstandard\u201d operating voltage conditions <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Typical information for conversion to \u201cstandard\u201d ambient temperature conditions Summary of diagnostic methods Summary of diagnostic methods <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | (informative) Determination of temporary overvoltages due to earth faults (informative) Determination of temporary overvoltages due to earth faults <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Relationship between <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Relationship between <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | Relationship between <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | Relationship between (informative) Current practice (informative) Current practice General Typical surge arrester characteristics for the power supply systems of Germany <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | Typical characteristics of gapped surge arresters phase-to-earth for resonant earthed and free ne… Typical characteristics of gapped surge arresters phase-to-earth for earthed neutral systems in G… <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Typical characteristics of gapped surge arresters neutral-to-earth in Germany Typical characteristics of metal oxide surge arresters phase-to-earth for resonant earthed or fre… <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | Typical characteristics of metal oxide surge arresters phase-to-earth for earthed neutral systems… Typical characteristics of metal oxide surge arresters neutral-to-earth in Germany <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | (informative) Bibliography (informative) Bibliography <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | (normative) Normative references to international publications with their corresponding European … (normative) Normative references to international publications with their corresponding European … <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Surge arresters – Selection and application recommendations<\/b><\/p>\n |