前言:这是CSA C61869-10《仪表变压器-第10部分:低功率无源电流互感器的附加要求》的第一版，采用了同名的IEC（国际电工委员会）标准61869-10（第一版，2017-12），但有加拿大的偏差。它取代了CAN/CSA-C60044-8:07（采用IEC 60044-8:2002）仪表变压器第8部分:电子电流互感器的相关部分。它是CSA C61869系列互感器标准的一部分，其中包括采用与IEC 61869系列标准有加拿大偏差的标准。本标准拟与CAN/CSA-C61869-1:14《互感器第1部分:一般要求》（采用IEC 61869-1:2007，加拿大偏差）结合使用；和CSA C61869-6:20，仪表变压器-第6部分:低功率仪表变压器的附加一般要求（采用IEC 61869- 6:2016，加拿大偏差）。CAN/CSA-C61869-1中列出了所有互感器类型的通用要求。常规互感器类型的具体要求分为CAN/CSA-C61869-2、CAN/CSA-C61869-3、CAN/CSA-C61869-4和CAN/CSA-C61869-5。这些CSA集团标准呈现了许多继承的加拿大偏差，这些偏差是由加拿大的具体条件、实践和法规证明的。CSA C61869-6中列出了用于额定频率为15 Hz至100 Hz的交流应用（包括中压、高压和超高压）或直流应用的低功率仪表变压器（LPIT）的共同要求。该系列的其余标准规定了特定类型仪表变压器的要求。加拿大积极参与了IEC 61869-10的制定，以执行加拿大的具体条件。应注意的是，IEC 61869系列第6至13部分规定了交流LPIT的要求，以及将LPIT实现为保护和测量集成系统所需的接口。 这种系统使用与IEC 61850兼容的通用数字传输协议，并具有数字输出。为了确保完全的互操作性，加拿大在CSA C61869-10中的偏差最小。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围:IEC 61869的本部分是产品标准，仅涵盖低功率无源电流互感器的附加要求。低功率无源电流互感器的产品标准包括IEC 61869-1、IEC 61869-6和本文件以及具体要求。本文件适用于新制造的低功率无源电流互感器，其模拟输出用于额定频率为15 Hz至100 Hz的电气测量仪表或电气保护装置。 本文件涵盖用于测量或保护的低功率无源电流互感器，以及用于测量和保护的多用途低功率无源电流互感器。子条款5.6.1001涵盖了与电气测量仪器一起使用的低功率无源电流互感器所需的精度要求。第5.6.1002款涵盖了与电气保护继电器一起使用的低功率无源电流互感器所需的精度要求，尤其是对于主要要求是将精度保持在额定电流几倍以下的保护形式。如果需要，故障期间低功率无源电流互感器的瞬态精度也在5.6.1002中给出。低功率无源电流互感器仅具有模拟电压输出（对于数字输出或使用任何类型有源电子元件的技术，请参阅IEC 61869- 82). 这种低功率无源电流互感器可以包括二次信号电缆（传输电缆）。附录10B给出了使用空心线圈（罗戈夫斯基线圈）的衍生低功率无源电流互感器的工作原理，附录10C给出了使用带集成分流器的铁芯线圈的比例低功率无源电流互感器的工作原理。

Preface:This is the first edition of CSA C61869-10,Instrument transformers — Part 10: Additional requirements for low-power passive current transformers, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 61869-10 (first edition, 2017-12). It replaces relevant parts of CAN/CSA-C60044-8:07 (adopted IEC 60044-8:2002),Instrument transformers — Part 8: Electronic current transformers. It is part of the CSA C61869 series of Standards on instrument transformers, which consists of adoptions with Canadian deviations of the IEC 61869 series of Standards.This Standard is intended to be used in conjunction with CAN/CSA-C61869-1:14,Instrument transformers — Part 1: General requirements(adopted IEC 61869-1:2007, with Canadian deviations); and CSA C61869-6:20,Instrument transformers — Part 6: Additional general requirements for lowpower instrument transformers(adopted IEC 61869-6:2016, with Canadian deviations).Requirements common to all instrument transformer types are grouped in CAN/CSA-C61869-1. Requirements specific to conventional instrument transformer types are grouped in CAN/CSA-C61869-2, CAN/CSA-C61869-3, CAN/CSA-C61869-4, and CAN/CSA-C61869-5. Those CSA Group Standards present many inherited Canadian deviations justified by the specific conditions, practices, and regulations in Canada.Requirements common to low-power instrument transformers (LPIT) used for ac applications having rated frequencies from 15 Hz to 100 Hz covering MV, HV, and EHV or used for dc applications are grouped in CSA C61869-6.The remaining Standards in the series state requirements for specific types of instrument transformers.Canada has actively participated in the development of IEC 61869-10, in order to enforce specific Canadian conditions. It should be noted that Parts 6 to 13 of the IEC 61869 series specify the requirements for ac LPIT as well as the interfaces necessary to implement the LPIT into an integrated system for protection and measurement. Such a system uses a universal digital transmission protocol compatible with IEC 61850, and has a digital output. In order to ensure full interoperability, Canadian deviations in CSA C61869-10 are minimal.This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:This part of IEC 61869 is a product standard and covers only additional requirements for low-power passive current transformers. The product standard for low-power passive current transformers comprises IEC 61869-1, together with IEC 61869-6 and this document with specific requirements.This document is applicable to newly manufactured low-power passive current transformers with analogue output for use with electrical measuring instruments or electrical protective devices having a rated frequency from 15 Hz to 100 Hz.This document covers low-power passive current transformers used for measurement or protection and multi-purpose low-power passive current transformers used for both measurement and protection.Subclause 5.6.1001 covers the accuracy requirements that are necessary for low-power passive current transformers for use with electrical measuring instruments.Subclause 5.6.1002 covers the accuracy requirements that are necessary for low-power passive current transformers for use with electrical protective relays, and particularly for forms of protection in which the prime requirement is to maintain the accuracy up to several times the rated current. If required, the transient accuracy of low-power passive current transformers during fault is also given in 5.6.1002.Low-power passive current transformers have analogue voltage output only (for digital output or for technology using any kind of active electronic components refer to IEC 61869-82). Such low-power passive current transformers can include the secondary signal cable (transmitting cable). The principle of operation of derivative low-power passive current transformers using air-core coils (Rogowski coils) is given in Annex 10B and the principle of operation of proportional low-power passive current transformers using iron-core coils with integrated shunt is given in Annex 10C.