前言:这是CSA C61869-6《互感器-第6部分:小功率互感器的附加一般要求》的第一版，采用了标题相同的IEC（国际电工委员会）标准61869-6（第一版，2016-04），但有加拿大的偏差。它取代了CAN/CSA-C60044-7:07（采用IEC 60044-7:1999）、互感器第7部分:电子电压互感器和CAN/CSA-C60044-8:07（采用IEC 60044-8:2002）、互感器第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。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对用于额定频率为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）的共同要求进行了分组- 6.本系列的其余标准规定了特定类型互感器的要求。加拿大积极参与了IEC 61869-6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中- 6个是最小的。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的本部分是一个产品系列标准，仅涵盖用于额定频率为15 Hz至100 Hz的交流应用或直流应用的低功率仪表变压器（LPIT）的附加一般要求。本产品标准基于IEC 61869-1:2007，以及相关产品特定标准。IEC 61869的本部分不包括互感器数字输出格式的规范。 IEC 61869的本部分定义了模拟或数字输出情况下的误差。作为IEC 61850系列标准的应用，仪表变压器数字接口的其他特性在IEC 61869-9中进行了标准化，该标准详细说明了分层变电站通信架构。IEC 61869的这一部分考虑了有关带宽的额外要求。规范性附录6A中给出了谐波的精度要求和抗混叠滤波器的要求。4.图601给出了单相LPITs的总体框图。根据该技术，图601中所述的所有零件并非绝对必须包含在互感器中。 例如，对于低功率无源变压器（无有源电子元件的LPIT），模块仅由无源元件组成，没有电源。

Preface:This is the first edition of CSA C61869-6,Instrument transformers — Part 6: Additional general requirements for low-power instrument transformers, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 61869-6 (first edition, 2016-04). It replaces relevant parts of CAN/CSA-C60044-7:07 (adopted IEC 60044-7:1999),Instrument transformers — Part 7: Electronic voltage transformers, and 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).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 61869-6, 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 C61869-6 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 family standard and covers only additional general requirements for low-power instrument transformers (LPIT) used for a.c. applications having rated frequencies from 15 Hz to 100 Hz covering MV, HV and EHV or used for d.c. applications. This product standard is based on IEC 61869-1:2007, in addition to the relevant product specific standard.This part of IEC 61869 does not cover the specification for the digital output format of instrument transformers.This part of IEC 61869 defines the errors in case of analogue or digital output. The other characteristics of the digital interface for instrument transformers are standardised in IEC 61869-9 as an application of the standards, the IEC 61850 series, which details layered substation communication architecture.This part of IEC 61869 considers additional requirements concerning bandwidth. The accuracy requirements on harmonics and requirements for the anti-aliasing filter are given in the normative Annex 6A.4.The general block diagram of single-phase LPITs is given in Figure 601.According to the technology, it is not absolutely necessary that all parts described in Figure 601 are included in the instrument transformer.As an example, for low-power passive transformers (LPITs without active electronic components) the blocks are composed only with passive components and there is no power supply.