1、IEC/IEEE 60079-30-1 Edition 1.0 2015-09 INTERNATIONAL STANDARD Explosive atmospheres Part 30-1: Electrical resistance trace heating General and testing requirements IEC/IEEE60079-30-1:2015-09(en) colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland Copyright 20
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12、 Edition 1.0 2015-09 INTERNATIONAL STANDARD Explosive atmospheres Part 30-1: Electrical resistance trace heating General and testing requirements INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.260.20 IEC ISBN 978-2-8322-2758-9 Warning! Make sure that you obtained this publication from an authorize
13、d distributor. Registered trademark of the International Electrotechnical Commission colourinsideIEEE ISBN 978-0-7381-9846-0 2 IEC/IEEE 60079-30-1:2015 IEC/IEEE 2015 CONTENTS FOREWORD . 5 INTRODUCTION . 10 1 Scope 11 2 Normative references 15 3 Terms and definitions 16 4 General requirements 22 4.1
14、General . 22 4.2 Mechanical strength 22 4.3 Terminations and connections . 23 4.4 Circuit protection requirements for branch circuits. 23 4.5 Temperature requirements 23 4.5.1 General . 23 4.5.2 Stabilized design . 24 4.5.3 Controlled design. 24 5 Testing 26 5.1 Type tests . 26 5.1.1 General . 26 5.
15、1.2 Dielectric test 26 5.1.3 Electrical insulation resistance test 27 5.1.4 Flammability test . 27 5.1.5 Impact tests . 29 5.1.6 Deformation test 32 5.1.7 Cold bend test . 32 5.1.8 Water resistance test . 33 5.1.9 Integral components resistance to water test . 33 5.1.10 Verification of rated output
16、. 34 5.1.11 Thermal stability of electrical insulating material 36 5.1.12 Thermal performance test 36 5.1.13 Determination of maximum sheath temperature . 38 5.1.14 Verification of start-up current . 46 5.1.15 Verification of the electrical resistance of electrically conductive covering 46 5.1.16 Ou
17、tdoor exposure test . 47 5.2 Routine tests. 47 5.2.1 Dielectric test 47 5.2.2 Verification of rated output . 47 6 Marking . 47 6.1 Product markings for trace heaters . 47 6.2 Markings for field assembled components . 48 7 Documentation requirements . 48 7.1 General . 48 7.2 Circuit design documentat
18、ion 48 7.3 Trace heating system documentation 49 7.3.1 General . 49 IEC/IEEE 60079-30-1:2015 3 IEC/IEEE 2015 7.3.2 For trace heating systems according to the product classification method 49 7.3.3 For trace heating systems according to stabilized design method 49 7.3.4 For trace heating systems acco
19、rding to controlled design method 49 7.4 Instructions for installation of trace heating system . 50 7.5 Instructions for commissioning 50 7.6 Instructions for maintenance / repair or modification . 50 Annex A (informative) Type test matrix for EPLs Gb/Gc/Db/Dc (Refer to IEC 60079-14 for the relation
20、ship of EPLs to Zones) . 52 Annex B (informative) Checklist for installation 53 Annex C (normative) Trace heater product design verification methodology . 54 C.1 General . 54 C.2 Design methodology and selection of trace heaters 54 C.3 Stabilized design calculations . 54 C.4 Trace heater performance
21、 and equilibrium conditions . 55 C.5 Heat loss calculations . 57 C.6 Heat loss design safety factor . 58 C.7 Maximum temperature determination 58 C.7.1 Theoretical pipe and sheath temperature calculations Metallic applications . 58 C.7.2 Theoretical vessel and sheath temperature calculations Metalli
22、c applications . 59 C.7.3 Sheath temperature metallic applications utilizing a temperature limiter control sensing the trace heater sheath or an artificial hot spot . 60 C.7.4 Theoretical sheath temperature calculations Non-metallic applications . 60 C.7.5 Sheath temperature non-metallic application
23、s utilizing a temperature limiter control sensing the trace heater sheath or an artificial hot spot . 62 Annex D (normative) Requirements for Division 1 and Division 2 trace heating systems 63 D.1 Application 63 D.2 General . 63 D.3 Terminations and connections . 63 D.4 Control and temperature requi
24、rements 63 D.4.1 General . 63 D.4.2 Stabilized design . 63 D.4.3 Controlled design. 64 D.4.4 Requirements for protective device in Divisions 1 and 2 64 D.5 Type tests . 64 D.5.1 Division 1 trace heating equipment 64 D.5.2 Division 2 equipment . 65 D.6 Marking . 65 D.7 Instructions Installation requi
25、rements . 65 Annex E (normative) Type test matrix for Division 1 and 2 explosive atmospheres . 67 Bibliography 69 Figure 1 Flammability test 28 Figure 2 Example of room temperature impact test 30 Figure 3 Example of minimum temperature impact test 31 Figure 4 Cold bend test 33 4 IEC/IEEE 60079-30-1:
26、2015 IEC/IEEE 2015 Figure 5 Integral components resistance to water test 34 Figure 6 Verification of rated output . 35 Figure 7 Maximum sheath temperature using product classification approach 39 Figure 8 Verification of sheath temperatures using pipe sculpture 41 Figure 9 Verification of sheath tem
27、perature, plate test . 44 Figure 10 Verification of sheath temperature plate test with serpentined sample . 44 Figure 11 Plate test with two samples crossed over . 45 Figure 12 Plate test with a single sample crossed over 46 Figure C.1 Equilibrium conditions for workpiece maintenance 55 Figure C.2 E
28、quilibrium conditions for upper limit evaluation . 56 Table 1 Application or exclusion of specific clauses of IEC 60079-0 . 11 Table 2 Sheath temperature design conditions based on equipment protection levels Stabilized design approach 24Table 3 Sheath temperature design conditions based on equipmen
29、t protection levels EPLs Controlled design approach 25 Table 4 Test voltages for the dielectric test 26 Table A.1 Determination of test samples 52 Table B.1 Trace heater installation record Example 53 Table D.1 Division trace heating systems . 63 Table D.2 Sheath temperature design conditions Stabil
30、ized design approach . 64 Table D.3 Sheath temperature design conditions With temperature control device 64 Table E.1 Applicable trace heater and trace heater pads and panels tests by installation location . 67 Table E.2 Applicable tests for integral components with trace heaters and trace heater pa
31、ds and panels. 68 IEC/IEEE 60079-30-1:2015 5 IEC/IEEE 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ EXPLOSIVE ATMOSPHERES Part 30-1: Electrical resistance trace heating General and testing requirements FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for
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