1、 CISPR 11 Edition 6.0 2015-06 REDLINE VERSION Industrial, scientific and medical equipment Radio-frequency disturbance characteristics Limits and methods of measurement CISPR 11:2015-06RLV(en)INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Co
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11、ic and medical equipment Radio-frequency disturbance characteristics Limits and methods of measurement INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.100.10 ISBN 978-2-8322-2742-8 INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE Registered trademark of the International Electrotechnical Commi
12、ssion Warning! Make sure that you obtained this publication from an authorized distributor. colourinside 2 CISPR 11:2015 RLV IEC 2015 CONTENTS FOREWORD . 8 INTRODUCTION . 11 1 Scope 12 2 Normative references 12 3 Terms and definitions 13 4 Frequencies designated for ISM use 16 5 Classification of IS
13、M equipment . 17 5.1 Separation into groups 17 5.2 Division into classes . 17 5.3 Information Documentation for the user 17 6 Limits of electromagnetic disturbances 18 6.1 General . 18 6.2 Group 1 equipment measured on a test site 18 6.2.1 Limits of terminal disturbance voltage for conducted disturb
14、ances . 18 6.2.2 Limits of electromagnetic radiation disturbance 21 6.3 Group 2 equipment measured on a test site 22 6.3.1 Limits of terminal disturbance voltage for conducted disturbances . 22 6.3.2 Limits of electromagnetic radiation disturbance 24 6.4 Group 1 and group 2 class A equipment measure
15、d in situ . 31 6.4.1 Limits of terminal disturbance voltage for conducted disturbances . 31 6.4.2 Limits of electromagnetic radiation disturbance 31 7 Measurement requirements . 33 7.1 General . 33 7.2 Ambient noise . 33 7.3 Measuring equipment 34 7.3.1 Measuring instruments. 34 7.3.2 Artificial mai
16、ns network (AN) 35 7.3.3 Voltage probe 35 7.3.4 Antennas . 36 7.3.5 Artificial hand 36 7.4 Frequency measurement . 36 7.5 Configuration of equipment under test. 37 7.5.1 General . 37 7.5.2 Interconnecting cables . 39 7.5.3 Connection to the electricity supply network on a test site . 40 7.6 Load con
17、ditions of equipment under test . 42 7.6.1 General . 42 7.6.2 Medical equipment . 43 7.6.3 Industrial equipment 44 7.6.4 Scientific, laboratory and measuring equipment . 45 7.6.5 Microwave cooking appliances . 45 7.6.6 Other equipment in the frequency range 1 GHz to 18 GHz . 45 7.6.7 Single and mult
18、iple-zone induction cooking appliances 7.6.7 Electric welding equipment 46 7.6.8 ISM RF lighting equipment . 47 CISPR 11:2015 RLV IEC 2015 3 7.6.9 Medium voltage (MV) and high voltage (HV) switchgear 47 7.6.10 Grid connected power converters 47 7.7 Recording of test-site measurement results 47 7.7.1
19、 General . 47 7.7.2 Conducted emissions . 48 7.7.3 Radiated emissions . 48 8 Special provisions for test site measurements (9 kHz to 1 GHz) 48 8.1 Ground planes 48 8.2 Measurement of mains terminal disturbance voltage conducted disturbances . 48 8.2.1 General . 48 8.2.2 Measurements on grid connecte
20、d power converters . 49 8.2.3 Handheld equipment which are normally operated without an earth connection . 53 8.3 Radiation test site for 9 kHz to 1 GHz . 54 8.3.1 General . 54 8.3.2 Validation of the radiation test site (9 kHz to 1 GHz) 55 8.3.3 Disposition of equipment under test (9 kHz to 1 GHz)
21、55 8.3.4 Radiation measurements (9 kHz to 1 GHz) 55 8.4 Alternative radiation test sites for the frequency range 30 MHz to 1 GHz 55 9 Radiation measurements: 1 GHz to 18 GHz . 56 9.1 Test arrangement 56 9.2 Receiving antenna 56 9.3 Validation and calibration of test site . 56 9.4 Measuring procedure
22、 56 9.4.1 General . 56 9.4.2 Operating conditions of the EUT 57 9.4.3 Preliminary measurement 57 9.4.4 Final measurement 58 10 Measurement in situ 59 11 Safety precautions for emission measurements on ISM RF equipment 60 12 Assessment of conformity of equipment . 12.1 General . 12.2 Statistical asse
23、ssment of compliance of series produced equipment . 12.3 Equipment in small-scale production . 12.4 Equipment produced on an individual basis . 12.5 Measurement uncertainty . 61 13 Figures and flowcharts Annex A (informative) Examples of equipment classification 62 Annex B (informative) Precautions
24、to be taken in the use of a spectrum analyzer (see 7.3.1) 64 Annex C (normative) Measurement of electromagnetic radiation disturbance in the presence of signals from radio transmitters . 65 Annex D (informative) Propagation of interference from industrial radio-frequency equipment at frequencies bet
25、ween 30 MHz and 300 MHz . 66 Annex E (informative) Recommendations of CISPR for protection of certain radio services in particular areas . 67 E.1 Introduction General . 67 E.2 Recommendations for protection of safety-related radio services 67 4 CISPR 11:2015 RLV IEC 2015 E.3 Recommendations for prot
26、ection of specific sensitive radio services . 67 Annex F (informative) Frequency bands allocated for safety-related radio services 68 Annex G (informative) Frequency bands allocated for sensitive radio services . 69 Annex H (informative) Statistical assessment of series produced equipment against th
27、e requirements of CISPR standards 71 H.1 Significance of a CISPR limit 71 H.2 Type tests . 71 H.3 Statistical assessment of series produced equipment 71 H.3.1 Assessment based on a general margin to the limit . 71 H.3.2 Assessment based on the non-central t-distribution . 72 H.3.3 Assessment based o
28、n the binomial distribution 74 H.3.4 Equipment produced on an individual basis . 74 Annex I (normative) Artificial Network (AN) for the assessment of disturbance voltages at d.c. power ports of semiconductor power converters 75 I.1 General information and purpose 75 I.2 Structures for a DC-AN . 75 I
29、.2.1 AN suitable for measurement of unsymmetrical mode (UM) disturbances 75 I.2.2 AN suitable for measurement of common mode (CM) and differential mode (DM) disturbances 75 I.2.3 AN suitable for measurement of UM, CM and DM disturbances . 76 I.3 Employment of DC-ANs for compliance measurements . 76
30、I.3.1 General . 76 I.3.2 Pseudo V-AN . 76 I.3.3 Delta-AN 76 I.4 Normative technical requirements for the DC-AN 77 I.4.1 Parameters and associated tolerances in the range 150 kHz to 30 MHz 77 I.4.2 Parameters and associated tolerances in the range 9 kHz to 150 kHz . 78 I.5 Examples of practical imple
31、mentations of DC-ANs 78 Annex J (informative) Measurements on Grid Connected Power Converters (GCPC) Setups for an effective test site configuration 81 J.1 General information and purpose 81 J.2 Setup of the test site . 81 J.2.1 Block diagram of test site 81 J.2.2 DC power supply . 82 J.2.3 AC power
32、 source . 82 J.2.4 Other components . 83 J.3 Other test setups 83 J.3.1 Configuration comprising laboratory AC power source and resistive load . 83 J.3.2 Configuration in case of reverse power flow to the AC mains . 84 Annex K (informative) Test site configuration and instrumentation Guidance on pre
33、vention of saturation effects in mitigation filters of transformer-less power converters during type tests according to this standard 86 K.1 General information and purpose 86 K.2 Recommendations for avoidance of saturation effects in the range 9 kHz to 150 kHz 87 K.3 Detailed advice . 87 K.3.1 Gene
34、ral . 87 K.3.2 Insert of series inductors (or common mode chokes) in the laboratorys d.c. power supply chain . 88 CISPR 11:2015 RLV IEC 2015 5 K.3.3 Employment of additional common mode decoupling capacitors at the interface between the AE port of the DC-AN and the laboratory d.c. power supply port
35、allocated in the test environment . 89 K.4 Background information 90 Bibliography 92 Figure 4 1 Circuit for disturbance voltage measurements on mains supply (see 7.3.3) . 35 Figure 6 2 Artificial hand, RC element (see 7.3.5) 36 Figure 3 Example for a typical cable arrangement for measurements of rad
36、iated disturbances in 3 m separation distance, Table-top EUT . 38 Figure 4 Example for a typical test set up for measurement of conducted and/or radiated disturbances from a floor standing EUT, 3D view 39 Figure 3 5 Disposition of medical (capacitive type) and dummy load (see 7.6.2.1) . 43 Figure 6
37、Typical arrangement for measurement of conducted disturbances at LV d.c. power ports with the DC-AN used as termination and decoupling unit to the laboratory d.c. power source . 51 Figure 7 Typical arrangement for measurement of conducted disturbances at LV d.c. power ports with the DC-AN used as te
38、rmination and voltage probe . 51 Figure 8 Typical arrangement for measurement of conducted disturbances at LV d.c. power ports with the DC-AN used as voltage probe and with a current probe 2D diagram 52 Figure 9 Typical arrangement for measurement of conducted disturbances at LV d.c. power ports wit
39、h a DC-AN used as voltage probe and with a current probe 3D diagram 53 Figure 1 10 Test site 54 Figure 2 11 Minimum size of metal ground plane . 54 Figure 5 12 Decision tree for the measurement of emissions from 1 GHz to 18 GHz of class B, group 2 ISM equipment operating at frequencies above 400 MHz
40、 57 Figure H.1 An example of possible difficulties 74 Figure I.1 Practical implementation of a 150 DC-AN suitable for measurement of UM disturbances (Example) 78 Figure I.2 Practical implementation of a 150 DC-AN suitable for measurement of CM and DM disturbances (Example, see also Figure A.2 in CIS
41、PR 16-1-2:2014) . 79 Figure I.3 Practical implementation of a 150 DC-AN suitable for measurement of UM, or CM and DM disturbances (Example 1) . 79 Figure I.4 Practical implementation of a 150 DC-AN suitable for measurement of UM, or CM and DM disturbances (Example 2) . 80 Figure I.5 Practical implem
42、entation of a 150 DC-AN suitable for measurement of UM, or CM and DM disturbances (Example 3) . 80 Figure J.1 Setup of the test site (Case 1) 2D diagram . 81 Figure J.2 Setup of the test site (Case 1) 3D diagram . 82 Figure J.3 Setup of the test site (Case 2) 2D diagram . 83 Figure J.4 Setup of the
43、test site (Case 2) 3D diagram . 84 Figure J.5 Setup of the test site (Case 3) 2D diagram . 85 Figure J.6 Setup of the test site (Case 3) 3D diagram . 85 Figure K.1 Flow of the common mode RF current at test site configuration level . 88 Figure K.2 Blocking of flow of common mode RF current by insert
44、 of series inductors . 89 Figure K.3 Blocking of flow of common mode RF current by employment of additional CM decoupling capacitors . 89 6 CISPR 11:2015 RLV IEC 2015 Figure K.4 CM termination impedance at the EUT port of a DC-AN Magnitude-versus-frequency characteristic in the range 3 kHz to 30 MHz
45、, Example . 90 Figure K.5 Prevention of saturation of mitigation filters by use of additional decoupling capacitors . 91 Figure K.6 Change in the resonant frequency caused by the increase and decrease in the decoupling capacitors capacitance . 91 Figure K.7 DC-AN circuit example where capacitance of
46、 blocking capacitors of the LC decoupling circuit can be increased or decreased 91 Table 1 Frequencies in the radio-frequency (RF) range designated by ITU for use as fundamental ISM frequencies 16 Table 2 Mains terminal Disturbance voltage limits for class A group 1 equipment measured on a test site
47、 (a.c. mains power port) 19 Table 3 Limits for conducted disturbances of class A group 1 equipment measured on a test site (d.c. power port) 20 Table 3 4 Mains terminal Disturbance voltage limits for class B group 1 equipment measured on a test site (a.c. mains power port) 20 Table 5 Disturbance vol
48、tage limits for class B group 1 equipment measured on a test site (d.c. power port) . 20 Table 4 6 Electromagnetic radiation disturbance limits for class A group 1 equipment measured on a test site . 21 Table 5 7 Electromagnetic radiation disturbance limits for class B group 1 equipment measured on
49、a test site . 22 Table 6 8 Mains terminal Disturbance voltage limits for class A group 2 equipment measured on a test site (a.c. mains power port) 23 Table 7 9 Mains terminal Disturbance voltage limits for class B group 2 equipment measured on a test site (a.c. mains power port) 23 Table 8 Mains terminal disturbance voltage limits for induction cooking appliances Table 9 10 Electromagnetic radiation disturbance limits for class
