IEC 61557-3-2007 交流1000V和直流1500V以下低压配电系统电气安全防护检测的

文件名称: IEC 61557-3-2007 交流1000V和直流1500V以下低压配电系统电气安全防护检测的试验、测量或监控设备第3部分：环路阻抗.pdf

所属分类: 其它

开发工具:

文件大小: 525kb

下载次数: 0

上传时间: 2019-10-08

提供者: weixin_********

下载 (525kb)

不能下载？报告错误

详细说明：IEC 61557-3-2007 交流1000V和直流1500V以下低压配电系统电气安全防护检测的试验、测量或监控设备第3部分：环路阻抗pdf,IEC 61557-3-2007 交流1000V和直流1500V以下低压配电系统电气安全防护检测的试验、测量或监控设备第3部分：环路阻抗61557-3|EC2007 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION ELECTRICAL SAFETYN LOWOLTAE DISTRIBUTION SSTEMS UP TO1 000V a.c. AND1 500V d.c EQUIPMENT FOR TESTINGME ASURINGR MONITORING OF PROTECTIVE MEASURES Part 3: Loop impedance FOREWORD 1] The internationa Electrolechnicat Commission EC)is a wordwide ofganization ior standardiz ation comprising al national electrotechnical committees (EC National Committees The object of iec is to promote intenational ca-operation on all questions concerning standardization in the electrlcal and electronic tie;ds, To this end and In addition to other activities, iEC publishes International standars, Technical specifications Technical Reports, Publicly Available Specilications (PAs) and Guides hereafter referred to as "lEC Pubficatianis). Their preparation is entrusted te technica! committees; any iec National Committee interested in the subject dealt with may participate in this preparatory work. international governmental and non governmental organizations liaising with the lEc aiso participate in this preparation. IEC cofiaborates closely with the International organiz ation for Standardization (iso) in accord ance with conditions determined by 每 gement between the two organiza各 2)The formal decisions or agreements of EC on technical matters express, as nearly as possibie, an international consensus of opInion on the relevant subjects since each technical committee has representation from al interested lEC Nationa! Committe es 3)IEC Publications have the form of recon ations for internationa! use and are accepted by IEC Nation al Committees in thal sense. While all reasonabte efforts are made to ensure that the technica content of iEc Publications s accurate lEc cannot be held responsible for the way in which they are used of fu any mIsinterpretation by any end user )in order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently lo ttre maximum extent possible in their national and regional publications. Any divergence beiween any !EC Publication and the corresponding national or regionad publication shall be clearly indicated in 5)EC provides no marking proce du: t to indicate its approval and cannot be endered responsible for any equip ment deciared to be in conformity with an IeC Publication 6)All users should ensure that they have the latest edition of this publication 7)No liability sha!l atta ch to fEC or its directors, employees, servants or agents including individual experts and of鏝st: chnica a印 miltees and把 C Nationa! Comm ittees for a ther damage of any nature whats Geyer, whether direct or indirect, or for cosis (including legal fees)and expenses arising out of the publication, use of, or reliance upon, this iEC Pubfication or any other EC me ed in this pablic ation. Use of the re ference publications is incis pensable for the correct applicatien of this publication 9)Aifention is drawn to the possibility that some of the elements ot this lEc Publication may be the subiect of patent rights. iEC shall not be held responsible for identifying any of all such patent rights International Standard lEC 61557-3 has been prepared by lEc technical committee 85 Measuring equipment for electrical and electromagnetic quantifies This second edition Cancels and replaces the first edition published in 1997. This edition constitutes a technical revision The folowing changes were made with res pect to the previous edition a) definitions complemented b)revision of some requirements; c)add fion of information on operating instructions d)add tion of new influence quantities Eg and ela 61557-3|Ec200 The iaxi of this standard is based on the following documents FDIS Re port on voting 8592FD|S 85/3e2段话 Fu!: information on the voting for the approval of this standard can be found in the report on voting indicated in the above tabie This publication has been drafted in accordance with the ISO/EC Directives, Part 2 ihis part of iEC 61557 shall be used in conjunction with part t A list of all parts of the IEC 61557 series, publ: shed under the general title Electrical safety in lowoifage distribution systems up to 1 000 v a.c. and 1 500v d. c.- Equipment for testing measuring or monitoring of protective measures, can be found on the lEC website The committee has decided that the contents of this publicalion will remain unchanged until the maintenanceresultdateindicatedontheieCwebsiteunderhttp://webstcreiecch"inthedata related to the specific publication. At this date, the publication will be reconfirmed withdrawn replaced by a revised edition, or amended 615573EC2007 9 ELECTRICAL SAFETYN LOWOLTAE DISTRIBUTION SSTEMS UP To a.c. ANd 1 500V d.c EQUIPMENT FOR TESTINGME ASURINGR MONITORING OF PROTECTIVE MEASURES Part 3: Loop im pedance 1 Scope This part of lEC 61557 specifies the requirements applicable to equipment for measuring the oop impedance between a phase conductor and the protective conductor cr between a phase conductor and neutral or between two phase conductors by using the voltage drop when the circuit under test is loaded 2 Normative references The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies, For undated references, the latest edition of the referenced document(including any am endments)applies IEC 61010-1: 2001, Safety requirements for electrical equipment for measurement, control, and laboratory use-Part 1: Eneral requirements lEC 61557-1. Electrical safefy in lowolage di stribution systems up to 1 000 v a.c. and 500v d.c. -Equipment for testing, measuring or monitoring of protective measures- Part 1 Eneral requirements 3 Terms and definitions For the purposes of this document, the definitions given in (Ec61557-1 and the following definitions apply loading method method of loading a circuit within a distrinution system to cause a voltage drop 3.2 loading equipment equipment causing a voltage drop in a circuit 3.3 test current current that causes a voltage drop in a circuit 615573|EC:2007 3.4 system phase angle angle between loop impedance and loop resistance of the distribution system 3.5 loop impedance um of the impedances in a current loop comprising the impedance of the source of the current the inpedance of the phase conductor (e.g. protective conductor. earth electrode and earth) from the point of measurement to the other terminal of the source of the current 4 Requirements The following requirements as well as those given in IEC 61557-1 shall apply 4.1 The maximum percentage operating uncertainty within the measuring range to be marked or stated shall not exceed s30 %o with the measured value as the fiducial value, as determined in accordance with Table 1 The operating uncertainty applies to the rated operating conditions in IEC S1557-1 and the following circuit to be iested without load system voltage between 85 and 110% of the nominal voltage of the distribution system for which the equipment has been designed systam frequency between 99 %o and 101 %o of the nominal frequency of the distribution system for which the equipment has been designed system voltage and frequency kept constant during the measurement; circuit loaded by loading equipment For measurements in close proximity to the transformer of the distribution system equipment with specified loop-impedance-measuring function(influence quantity for system phase angle at the minimum 30) shall be used or a specified additional operating uncertainty shall be taken in account by the user NOTEin applications whare the measurement ci loop resistance is carried out In ciase pro mity to the sourcing ans former [e9,“自的) the sys1 em ha$ e angle may be more的18”(e,s,Up130“} and therefore9 inductive part of the interna impedance of transformer may not be negligible. 4.2 When the loading by loading equipment causes transients on the distribution system, the operating uncertainty shall not be exceeded as a result of the transient Equiprnent with specified influence quantity Et. of system phase angie of 18 shall be marked with the warning symbol No. 14 according IEC 61010-1 adjacent to the loop function marking or a warning shal! be given on the display 4. 3 When external resistances are included in the calibration as a zero offset, this shall be ndicated This offset shall remain included as tang as it is indicated regardless of any changes in range or function 61557-3|EC:2007 Table 1 -Calculation of operating uncertainty Intrinsic uncertainty Requia or influence Reference conditions or DS9nato挂 In accordance rt specIfied operating range code relevant parts quantity of test 1Ec分1557 intrinsic uncertainty Reference conditions Part 3. Subclause 6.1 Position Refereace positicn #90 Part t,Sut」94.2 R Supply voitage At ths limits slated by the Paft1,sutψeS辱Z, 43 T器 operate会 0'C and 35'C 卩ar1,Sub思4,2 Phase angte At a phase angie°to18 E Pas,sub耗g巳斗.1 System phase angle At a system phase angle 0 to 18 P杂3,SUU8日4.1 at the bottom of the measurement an毛 System pnase angie At a system phase angle 0 to 30. Part 3. Subclause 4.1 at the bottom of the measurement race System frequency 99 %to 101 of the nominal Pat3, Subclause4车 reqUe罪y System voltags 85 to 110 of the no inal Ep P雞3,subC]aus日4.钅 H3:monic %3 harmon良ae 户3,5 Subclause4.1 ngt 6 %of 5 harmonic at 120 phase ang le 5 of harmonic at 0 phase angle i percentage of the funcamental af nomina voltage of distribition system) D E quantity Add additional d.c. quantities of Part 3. Subclause 4.1 0, 5 %a of the nominal voitage of distribufion system in boih polarities+ it is recommended that manufac turers include E10 into tI loculation of operating uncertainly cording to this ta b】 g Paea1+号+后+3+E+) Part 3, Subcla:R 点 ÷ as applICa b Influence quantity Etg lakes in account possible vollage drops caused by d.c. leakage currents accordiny EQ61B05·20 m the PE QT PEN-cuct「 615573IC:2007 4. 4 Avoidance of the presence of a fault voltage resulting from the measurement exceeding 50v at the point of measurement on the circuit under test shall be ensured. this can be achieved by an automatic disconnection when fault voltages with a value >50 v in accordance with figure t of IEC 61010-1 occur 4.s The measuring equipment shall not be damaged nor shall the user be exposed to danger when the measuring equipment is connected to 120 %o of the nominal votage of the distribution system for which the measuring equipment has been designed Protective devices shall not be activated 4.6 The user shall not be exposed to danger and the equipment shall not be damaged when the measuring equipment is accidentaly connected to a voltage having a value of 173 %o Of its rated voltage to earth for 1 min Protective devices may be activated 5 Maring and operating instructions 5.1 Maring In addition to the marking in accordance with lEC 61557-1. the following inform ation shall be provided on ihe measuring equipment 5.1.1 Range of the resistance of the loop impedance or of the calculated short- circuit current respectively within which compliance with the uncertainty limits in accordance with 4.1 is mainte兹 5.1.2 Nominal system voltage for which the equipment has been rated 5.1.3 Raied system frequency for which the equipment has been rated 5.1.4 Phase angle of the loading equipment when this angle is >18 5.2 Operating instructions The operating instructions shall state the following in addition to the information given in lEC61557-1 5.2.1 Data relating to the loading equipment if the phase angle is >18 5.2.2 Valus and waveform of test current and duration of loading 5.2.3 Range of system voltages within which the operating uncertainty stated in 4. 1 is not exceeded 5.2.4 Range of loop impedance (magnitude and angle) within which the operating uncertainty stated的4钅 is not exceeded 5.2.5 Note on possible uncertainties, for example due to preloading the circuit under test 5.2.6.Data relating io the effect of system voltage variations and other effects from the system such as measuring in close proximity to the trans former of tne distribution system. A specific user correction shail be stated, unless the instrument has a fully specified loop impedance measuring function 15573IEC:200了 1了 6 Tests In addition to IEC 61557-1 the following tests shall be executed 6. 1 The operating uncertainty shall be calculated in accordance with Table 1. In this process the intrinsic uncertainty shall be deternined under the following reference conditions nominal system voltage nominal system frequency reference temperature 23C+2 C reference position in accordance with the manufacturer's statement nominal distribution system supply or battery voltage respectively ditference between phase angle of the loading equipment and the iocp impedance of the circuIt under test5° The operating uncertainty thus evaluated shall not exceed the limits specified in 4.1 6.2 Compliance with the requirements in accordance with 4.3 shall se tested (type test) 6. 3 Compliance with the requirements in accordance with 4. 4 shall be tested (routine fest S.4 The permis sible over load in accordance with the requirements of 4.5 and 4.6 shail be tested (type test 6.5 Compliance with the tests in this clause shall be recorded 61557-3C2007 19 Bibliography IEC 6180C-5-2, Adistable speed electric al poer drive systems w Part 5-2: Safety requirements-Functional 1 1) To be p!静走

(系统自动生成,下载前可以参看下载内容)