1、 IEC 62793 Edition 1.0 2016-05 INTERNATIONAL STANDARD Protection against lightning Thunderstorm warning systems IEC 62793:2016-05(en)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication m
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10、further assistance,please contact the Customer Ser vice Centr e:csciec.ch.IEC 62793 Edition 1.0 2016-05 INTERNATIONAL STANDARD Protection against lightning Thunderstorm warning systems INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.020;91.120.40 ISBN 978-2-8322-3352-8 Registered trademark of the I
11、nternational Electrotechnical Commission Warning!Make sure that y ou obtained this publication from an authorized distributor.colourinside 2 IEC 62793:2016 IEC 2016 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.9 3 Terms,definitions and abbreviations.9 3.1 Terms and definitions
12、.9 3.2 Abbreviations.12 4 Thunderstorm phases and detectable phenomena for alarming.13 4.1 Introductory remark.13 4.2 Phase 1 Initial phase(cumulus stage).13 4.3 Phase 2 Growth phase.13 4.4 Phase 3 Mature phase.13 4.5 Phase 4 Dissipation phase.13 5 Classification of thunderstorm detection devices an
13、d their properties.14 6 Alarm method.15 6.1 General.15 6.2 Areas.16 6.2.1 Target area(TA).16 6.2.2 Surrounding area(SA).16 6.2.3 Monitoring area(MA).17 6.2.4 Coverage area(CA).17 6.3 Alarm triggering.17 6.4 Alarm information delivery.19 7 Installation and maintenance.19 8 Alarm evaluation.19 8.1 Gen
14、eral.19 8.2 Evaluation of TWS by using lightning location data.21 8.3 Fine tuning of TWS by processing archived data.21 9 Thunderstorms warning systems application guide.21 9.1 General.21 9.2 Procedure.22 9.2.1 General.22 9.2.2 Step 1 Identification of hazardous situations.22 9.2.3 Step 2 Determinat
15、ion of type of loss.22 9.2.4 Step 3 Risk control.23 Annex A(informative)Overview of the lightning phenomena.25 A.1 Origin of thunderclouds and electrification.25 A.2 Lightning phenomena.25 A.3 Electric thunderstorm and lightning characte ristics useful for prevention.26 A.3.1 Electrostatic field.26
16、A.3.2 Electromagnetic fields.27 A.3.3 Other parameters useful in lightning detection.27 Annex B(informative)Thunderstorm detection techniques.28 B.1 Introductory remarks.28 B.2 Detection techniques and parameters to qualify a sensor.28 IEC 62793:2016 IEC 2016 3 B.2.1 General.28 B.2.2 Class A.28 B.2.3 Class B.29 B.2.4 Class C.29 B.2.5 Class D.29 B.3 Location techniques.29 B.3.1 General.29 B.3.2 Multi-sensor location techniques.29 B.3.3 Single sensor techniques.30 B.4 Thunderstorm detectors evalua
