CISPR 11:2015

Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement

CISPR 11:2015

Name:CISPR 11:2015   Standard name:Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement
Standard number:CISPR 11:2015   language:English language
Release Date:17-Jan-2019   technical committee:CIS/B - Interference relating to industrial, scientific and medical radio-frequency apparatus, to other (heavy) industrial equipment, to overhead power lines, to high voltage equipment and to electric traction
Drafting committee:   ICS number:01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION

CISPR 11
Edition 6.0 2015-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement








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CISPR 11
Edition 6.0 2015-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

Industrial, scientific 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

– 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 ISM 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 disturbances . 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 measured 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 mains 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 conditions 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 multiple-zone induction cooking appliances .
7.6.7 Electric welding equipment . 46
7.6.8 ISM RF lighting equipment . 47

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 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 connected 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) . 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 . 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 assessment 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 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 between 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 protection of specific sensitive radio services . 67

Annex F (informative) Frequency bands allocated for safety-related radio services . 68
...

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