1、 International Telecommunication Union ITU-T K.43TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2009) SERIES K: PROTECTION AGAINST INTERFERENCE Immunity requirements for telecommunication network equipment Recommendation ITU-T K.43 Rec. ITU-T K.43 (07/2009) i Recommendation ITU-T K.43 Immunity
2、requirements for telecommunication network equipment Summary Recommendation ITU-T K.43 describes the immunity requirements for telecommunication network equipment in a given environment. Specific product family Recommendations supersede this Recommendation. This Recommendation includes immunity requ
3、irements in the frequency range of 150 kHz-80 MHz for conducted immunity and 80-2700 MHz for radiated immunity. Source Recommendation ITU-T K.43 was approved on 14 July 2009 by ITU-T Study Group 5 (2009-2012) under Recommendation ITU-T A.8 procedures. ii Rec. ITU-T K.43 (07/2009) FOREWORD The Intern
4、ational Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, ope
5、rating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn,
6、produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In
7、 this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g.,
8、 interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not sugg
9、est that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evid
10、ence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which m
11、ay be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2010 All rights reserved. No part of this publication may b
12、e reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T K.43 (07/2009) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 3 4 Abbreviations 4 5 Equipment configuration and general
13、 operation during test . 4 5.1 Equipment configuration 4 5.2 Equipment for operation . 4 5.3 Laboratory environment . 5 5.4 Operation of equipment during tests 5 6 Performance criteria 5 6.1 Performance criterion A . 5 6.2 Performance criterion B . 5 6.3 Performance criterion C . 5 7 Immunity: Test
14、method 6 7.1 General conditions 6 7.2 Particular conditions . 6 8 Applicability . 7 9 Test levels . 8 Appendix I Coupling and decoupling networks for continuous conducted signal test . 12 Appendix II Uniformity of test field . 13 Appendix III Examples of coupling and decoupling network (CDN) 14 Bibl
15、iography. 16 Rec. ITU-T K.43 (07/2009) 1 Recommendation ITU-T K.43 Immunity requirements for telecommunication network equipment 1 Scope This Recommendation specifies the immunity requirements for equipment used within the public telecommunication networks and for terminal equipment connected to suc
16、h networks. This Recommendation is a product family Recommendation. This Recommendation gives the minimum test levels applicable in a given environment. The requirements given in specific product family Recommendations supersede those given in this Recommendation. This Recommendation is applicable t
17、o all equipment types: equipment in the telecommunication networks, including switching equipment, transmission equipment, radio equipment, power supply equipment, supervisory equipment and control equipment; terminal equipment connected to telecommunication networks, including telephone set, facsim
18、ile and PBX; terminal equipment that uses the LV AC network for telecommunications (i.e., PLT devices). This Recommendation includes immunity requirements in the frequency range: 150 kHz-80 MHz for conducted immunity; 80-2700 MHz for radiated immunity. Other frequency ranges are covered by other K s
19、eries of ITU-T Recommendations, e.g., b-ITU-T K.76 for the 9-150 kHz frequency range. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions
20、 indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid IT
21、U-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T K.34 Recommendation ITU-T K.34 (2003), Classification of electromagnetic environmental conditions for telecommunicatio
22、n equipment Basic EMC Recommendation. IEC 60050-161 IEC 60050-161:1990, International Electrotechnical Vocabulary. Chapter 161: Electromagnetic Compatibility, plus Amendment 2 (1998). IEC 61000-4-1 IEC 61000-4-1:2006, Electromagnetic compatibility (EMC) Part 4-1: Testing and measurement techniques O
23、verview of IEC 61000-4 series. IEC 61000-4-2 IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity test. IEC 61000-4-3 IEC 61000-4-3:2008, Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques
24、Radiated, radio-frequency, electromagnetic field immunity test. 2 Rec. ITU-T K.43 (07/2009) IEC 61000-4-4 IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) Part 4-4: Testing and measurement techniques Electrical fast transient/burst immunity test. IEC 61000-4-5 IEC 61000-4-5:2005, Electromagne
25、tic compatibility (EMC) Part 4-5: Testing and measurement techniques Surge immunity test. IEC 61000-4-6 IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques Immunity to conducted disturbances, induced by radio-frequency fields. IEC 61000-4-8 IEC 61000-
26、4-8:2009, Electromagnetic compatibility (EMC) Part 4-8: Testing and measurement techniques Power frequency magnetic field immunity test. IEC 61000-4-9 IEC 61000-4-9:2001, Electromagnetic compatibility (EMC) Part 4-9: Testing and measurement techniques Pulse magnetic field immunity test. IEC 61000-4-
27、10 IEC 61000-4-10:2001, Electromagnetic compatibility (EMC) Part 4-10: Testing and measurement techniques Damped oscillatory magnetic field immunity test. IEC 61000-4-11 IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) Part 4-11: Testing and measurement techniques Voltage dips, short interru
28、ptions and voltage variations immunity tests. IEC 61000-4-29 IEC 61000-4-29:2000, Electromagnetic compatibility (EMC) Part 4-29: Testing and measurement techniques Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests. 3 Definitions 3.1 Terms defined elsewh
29、ere This Recommendation uses the definitions in the International Electrotechnical Vocabulary, Chapter 161: Electromagnetic Compatibility (IEC 60050-161). 3.1.1 burst (of pulses or oscillations) (161-02-07): A sequence of a limited number of distinct pulses or an oscillation of limited duration. 3.1
30、.2 continuous disturbance (161-02-11): Electromagnetic disturbance whose effects on a particular device or piece of equipment cannot be resolved into a succession of distinct effects. 3.1.3 discontinuous interference (161-02-13): Electromagnetic interference occurring during certain time intervals s
31、eparated by interference-free intervals. 3.1.4 duration (of a pulse) (161-08-03): The interval of time between the first and last instants when the instantaneous value of a pulse reaches 50% of the pulse magnitude. 3.1.5 immunity (to a disturbance) (161-01-20): The ability of a device, equipment, or
32、 system to perform without degradation in the presence of an electromagnetic disturbance. 3.1.6 impulsive disturbance (161-02-09): Electromagnetic disturbance which, when incident on a particular device or piece of equipment, manifests itself as a succession of distinct pulses or transients. 3.1.7 p
33、eriod (IEC 61000-4-11): A unit of duration equal to one cycle of AC supply frequency. 3.1.8 pulse (161-02-02): An abrupt short-duration variation in a physical quantity followed by a rapid return to the initial value. 3.1.9 surge (voltage) (161-08-11): A transient voltage wave propagating along a li
34、ne or a circuit and characterized by a rapid increase followed by a slower decrease of the voltage. Rec. ITU-T K.43 (07/2009) 3 3.1.10 transient (adjective or noun) (161-02-01): Pertaining to or designating a phenomenon or a quantity that varies between two consecutive steady states during a time in
35、terval that is short compared with the time scale of interest. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 abnormal voltage range: Range of steady-state voltage over which the equipment will not be expected to maintain normal service, but will surv
36、ive undamaged. 3.2.2 cable port: A point at which a conductor or a cable is connected to the equipment. 3.2.3 characteristic severity: A severity that has only a low probability (generally less than 1%) of being exceeded for a certain parameter in an environmental class. This term relates to duratio
37、n, rate of occurrence, or location. It applies to environmental and immunity requirements. 3.2.4 coupling and decoupling networks: Coupling and decoupling networks (CDN) that terminate a cable with a common mode impedance to ground. The CDN shall not unduly affect the functional signals. 3.2.5 dwell
38、 time: Duration of the exposition to the amplitude modulated carrier at each frequency necessary for the EUT to be exercised and to respond. 3.2.6 enclosure port: The physical boundary of the equipment through which electromagnetic fields may radiate or impinge. For plug-in units, the physical bound
39、ary will be defined by the host equipment. 3.2.7 port: Particular interface of the specified equipment with the external electromagnetic environment (see Figure 1). 3.2.8 ports in telecommunication equipment (indoor port, outdoor port, enclosure port, DC power port, AC power port) (see Figure 1; for
40、 enclosure port, see clause 3.2.6). K.43(09)_F01AC power portDC power portoutdoorportindoor portoutdoorportTerminalequipmentSwitchingequipmentDC powersystemTransmissionequipment 1OperationsystemTransmissionequipment 2Figure 1 Telecommunication ports 3.2.9 radio frequency (RF): The frequency range ab
41、ove 9 kHz. 3.2.10 shielding effectiveness: For a given external source, the ratio of electric or magnetic field strength at a point before and after the placement of the shield in question. 4 Rec. ITU-T K.43 (07/2009) 4 Abbreviations This Recommendation uses the following abbreviations: AC Alternati
42、ng Current AE Auxiliary Equipment CDN Coupling and Decoupling Network CRT Cathode Ray Tube DC Direct Current EFT Electrical Fast Transient EMC Electromagnetic Compatibility ESD Electrostatic Discharge EUT Equipment Under Test LV Low Voltage PBX Private Branch Exchange PLT Power Line Telecommunicatio
43、n RF Radio Frequency VDU Video Display Unit 5 Equipment configuration and general operation during test This clause describes the general requirements for equipment configuration and operation during a test. Product-specific operating conditions will be specified in the relevant Recommendation. 5.1
44、Equipment configuration All tests should be applied in the normal installation conditions. Power and signal distribution, grounding, interconnecting cabling and the physical placement of the equipment of a test system shall simulate the typical application and usage in so far as is practicable, and
45、be in accordance with the relevant product specifications of the manufacturer. The configuration that tends to minimize its immunity shall be selected if it is known. Only configurations within the range of positions likely to occur in normal use need be considered. The selected configuration shall
46、be fully detailed and documented in the test report, together with the justification for selecting that particular configuration. 5.2 Equipment for operation The exercising and auxiliary equipment shall be sufficiently decoupled from the EUT so that the immunity of such equipment does not significan
47、tly affect the test results. Equipment like PLT modems will not permit the insertion of a CDN at the power line between the auxiliary modem and the modem under test. In cases where the relevant basic standard does not give an alternative coupling solution (such as a capacitive clamp), in the immunit
48、y tests both units shall be connected in parallel. This means that the disturbance will be applied to both units: hence some decoupling feature shall be present at the input to the auxiliary modem to provide some disturbance attenuation. Rec. ITU-T K.43 (07/2009) 5 5.3 Laboratory environment For all
49、 the tests, the test laboratory environment shall be the one defined in the corresponding basic standards (IEC Publications IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5, IEC 61000-4-6, IEC 61000-4-11 and IEC 61000-4-29). The electromagnetic environment of the test laboratory shall not influence the results. 5.4 Operation of equipment during tests The immunity tests described shall be performed with the EUT connected to a power supply and operating in a manner
