1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 61000-3-11:2001 IEC
2、 61000-3-11:2000 Incorporating Corrigendum No.1 ICS 33.100.10; 91.140.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Electromagnetic compatibility (EMC) Part 3-11: Limits Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems E
3、quipment with rated current# 75 A and subject to conditional connectionThis British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 January 2001 BSI 02-2001 ISBN 0 58
4、0 36822 X BS EN 61000-3-11:2001 Amendments issued since publication Amd. No. Date Comments 13042 corrigendum February 2001 Corrects typographical errors in title and normative references clause. National foreword This British Standard is the official English language version of EN 61000-3-11:2000. I
5、t is identical with IEC 61000-3-11:2000. The UK participation in its preparation was entrusted by Technical Committee GEL/210, Electromagnetic compatability, to Subcommittee GEL/210/8, EMC - Low frequency disturbances, which has the responsibility to: aid enquirers to understand the text; present to
6、 the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be o
7、btained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identi
8、fiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international o
9、r European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a c
10、ontract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside
11、back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.(8523($167$1$5 (1 1250(8523e(11( (8523b,6 emission limits for other phenomena such as harmonics, may also have to be satisfied. 3.4 service current capacity the current per ph
12、ase which can be taken continuously by the user at the interface point without exceeding the plant ratings used by the supply authority in the design of its system NOTE In practice the service current capacity is the rating of the main service fuse or overcurrent protection setting of the circuit br
13、eaker at the interface point. In cases where supply authorities declare supply capacities in volt-amperes, the current per phase may be deduced for single phase supplies by dividing the volt-amperes by the declared phase voltage, and for three-phase supplies by dividing it by 3 times the declared li
14、ne voltage. 4 Requirements If equipment complies with the requirements of IEC 61000-3-3 and therefore is not subject to conditional connection, it may be declared so by the manufacturer in documentation made available to users before purchase. Equipment which does not meet the limits of IEC 61000-3-
15、3, when tested or evaluated with reference impedance Z ref , is subject to conditional connection, and the manufacturer shall either: a) determine the maximum permissible system impedance Z maxat the interface point of the users supply in accordance with 6.2, declare Z max in the equipment instructi
16、on manual and instruct the user to determine in consultation with the supply authority, if necessary, that the equipment is connected only to a supply of that impedance or less, or Page6 EN61000311:2000 BSI 01-2001 b) test the equipment in accordance with 6.3 and declare in the equipment instruction
17、 manual that the equipment is intended for use only in premises having a service current capacity 100 A per phase, supplied from a distribution network having a nominal voltage of 400/230 V, and instruct the user to determine in consultation with the supply authority, if necessary, that the service
18、current capacity at the interface point is sufficient for the equipment. The equipment shall be clearly marked as being suitable for use only in premises having a service current capacity equal to or greater than 100 A per phase. NOTE 1 In the case of option a), restrictions to connection may be imp
19、osed by the supply authority on the use of equipment if the actual system impedance at the interface point on the users premises, Z act ,exceeds Z max . NOTE 2 In the case of option b), a new symbol (IEC 60417-5855) is under consideration for the purpose of marking equipment. NOTE 3 For options a) a
20、nd b), if the supply capacity and/or the actual system impedance Z acthave been declared to, or measured by, the user, this information may be used to assess the suitability of equipment without reference to the supply authority. 5 Limits The limits shall be applicable to voltage fluctuations and fl
21、icker at the supply terminals of the equipment under test, measured or calculated according to clause 4 under test conditions described in clause 6. Tests made to prove the compliance with the limits are considered to be type tests. The following limits apply: the value of the short-term flicker ind
22、icator, P stshall not be greater than 1,0; the value of the long-term flicker indicator, P ltshall not be greater than 0,65; the value of d(t) during a voltage change shall not exceed 3,3 % for more than 500 ms; the relative steady-state voltage change, d c , shall not exceed 3,3 %; the maximum rela
23、tive voltage change d max , shall not exceed: a) 4 % without additional conditions; b) 6 % for equipment with: manual switching, or automatic switching more frequently than twice per day and having a delayed restart (the delay being not less than a few tens of seconds) or, manual restart after a pow
24、er supply interruption. NOTE The cycling frequency will be further limited by the P stand P ltlimit. For example: a d maxof 6 % producing a rectangular voltage change characteristic twice per hour will give a P ltof about 0,65. c) 7 % for equipment which is attended whilst in use (for example: hair
25、dryers, vacuum cleaners, kitchen equip- ment such as mixers, garden equipment such as lawnmowers, portable tools such as electric drills); or is switched on automatically, or is intended to be switched on manually, no more than twice per day and has a delayed restart (the delay being not less than a few tens of seconds) or manual restart after a power supply interruption. Page7 EN61000311:2000
