前言:这是CSA C61869-9《互感器-第9部分:互感器数字接口》的第一版，采用了标题相同的IEC（国际电工委员会）标准61869-9（第一版，2016-04），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。本标准旨在与CAN/CSA结合使用- C61869-1:14，仪表变压器-第1部分:一般要求（采用IEC 61869-1:2007，带加拿大偏差）；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，带有加拿大偏差）。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。LPIT具有低功耗模拟输出或数字输出。与LPIT相关的数字接口要求见CSA C61869-9。加拿大积极参与了IEC 61869-9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 C61869-9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的本部分是一个产品系列标准，适用于具有数字输出的互感器。除本标准和IEC 61869系列（第7部分、第8部分、第12部分、第13部分、第14部分和第15部分）中的相关产品特定标准外，产品标准由IEC 61869-1和IEC 61869-6组成。 本标准定义了互感器测量的数字通信要求。它基于IEC 61850系列、UCA国际用户组文件《使用IEC 61850-9-2的互感器数字接口实施指南》，以及本标准取代的IEC 60044-8的相关部分。它包括额外的改进，包括基于IEC 61588网络的时间同步。10C。

Preface:This is the first edition of CSA C61869-9,Instrument transformers — Part 9: Digital interface for instrument transformers, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 61869-9 (first edition, 2016-04). 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 low-power 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.The LPIT has low-power analog output or digital output. The requirements for the digital interface associated with LPIT are grouped in CSA C61869-9.Canada has actively participated in the development of IEC 61869-9, 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 C61869-9 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 applicable to instrument transformers with digital output. The product standard is composed of IEC 61869-1 and IEC 61869-6, in addition to this standard and the relevant product specific standards in the IEC 61869 series (Part 7, Part 8, Part 12, Part 13, Part 14, and Part 15).This standard defines requirements for digital communications of instrument transformer measurements. It is based on the IEC 61850 series, UCA international users group documentImplementation guideline for digital interface to instrument transformers using IEC 61850-9-2, and the relevant parts of IEC 60044-8 that are replaced by this standard. It includes additional improvements including the IEC 61588 network based time synchronization.10C.