1、 64/1381/CDCOMMITTEE DRAFT(CD)IEC/TC or SC:TC 64 Project number IEC 60364-4-44,A2,f2,Ed.1 Title of TC/SC:Electrical installations and protection against electrical shock Date of circulation 2004-03-19 Closing date for comments 2004-06-25 Also of interest to the following committees Supersedes docume
2、nts 64/1341/CD 64/1380/CC Functions concerned:Safety EMC Environment Quality assurance Secretary:Dipl.-Ing.R.Pelta,Germany E-mail: THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE.IT SHOULD NOT BE USED FOR REFERENCE PURPOSES.RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT,WITH THEIR COMMEN
3、TS,NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.Title:Amendment 2 and f2 to IEC 60364-4-44,Ed.1:Electrical installations of buildings-Part 4-44:Protection for safety-Protection against voltage disturbances and measures against electromagn
4、etic influences-Clause 444:Measures against electromagnetic influences (Titre):Introductory note FORM CD(IEC)2002-05-14 Copyright 2004 International Electrotechnical Commission,IEC.All rights reserved.It is permitted to download this electronic file,to make a copy and to print out the content for th
5、e sole purpose of preparing National Committee positions.You may not copy or mirror the file or printed version of the document,or any part of it,for any other purpose without permission in writing from IEC.XXX IEC:200X 2 64/1381/CD INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSTALLATION
6、S OF BUILDINGS Part 4:Protection for safety Part 4-44:Protection against voltage disturbances and measures against electromagnetic influences Clause 444:Measures against electromagnetic influences Clause 440:INTRODUCTION,page 9 Substitute the paragraph beginning with:“Introduction IEC 60364-4-444”an
7、d ending before the sentence“Clause 445.”by the following text:Clause 444 provides basic recommendations for the mitigation of electromagnetic disturbances.Electromagnetic Interferences(EMI)may disturb or damage information technology systems or IT-equipment and equipment with electronic components
8、or circuits as well.Currents due to lightning,switching operations,short-circuits and other electromagnetic phenomena may cause overvoltages and electromagnetic interference.These effects appear where large metal loops exist1);and where different electrical wiring systems are installed on different
9、routes,e.g.for power supply and for signalling information technology equipment within a building.The value of the induced voltage depends on the rate of rise(di/dt)of the interference current,and on the size of the loop.Power cables carrying large currents with a high rate of rise of current(di/dt)
10、(e.g.the starting current of lifts or currents controlled by rectifiers)can induce overvoltages in cables of information technology systems,which can influence or damage information technology or similar electrical equipment.In or near rooms for medical use,electric or magnetic fields of electrical
11、installations can interfere with medical electrical equipment.Page 13 ,clause 440.2 Normative references Delete the following normative references:IEC 60364-5-548 Introduce the following normative references:IEC 62305 Series:Protection against lightning IEC 60364-4-41,Electrical installations of bui
12、ldings Part 4-41:Protection against electric shock IEC 60364-5-54,Electrical installations of buildings Part 5-54:Selection and erection of electrical equipment Earthing arrangements,protective conductors and protective bonding conductors XXX IEC:200X 3 64/1381/CD IEC 61558 series safety of power tr
13、ansformer,power supply units and similar IEC 61558-2-1 Safety of power transformers,power supply units and similar products-Part 2:Particular requirements for separating transformers for general use IEC 61558-2-4 Safety of power transformers,power supply units and similar products-Part 2:Particular
14、requirements for isolating transformers for general use IEC 61558-2-6 Safety of power transformers,power supply units and similar products-Part 2:Particular requirements for safety isolating transformers for general use IEC 61558-2-15 Safety of power transformers,power supply units and similar produ
15、cts-Part 2-15:Particular requirements for isolating transformers for the supply of medical locations IEC 61000-6-1:Electromagnetic compatibility(EMC)-Part 6:Generic standards Section 1:Immunity for residential,commercial and light-industrial environments IEC 61000-6-2:Electromagnetic compatibility(E
16、MC)Part 6:Generic standards Section2:Immunity for industrial environments IEC 61000-6-3:Electromagnetic compatibility(EMC)-Part 6:Generic standards-Section 3:Emission standard for residential,commercial and light-industrial environments IEC 61000-6-4:Electromagnetic compatibility(EMC)-Part 6:Generic standards-Section 4:Emission standard for industrial environments EN 50310,Application of equipotential bonding and earthing in buildings with information technology equipment EN 50288 series,Multi-e