前言:这是CSA C61000-3-11《电磁兼容性（EMC）-第3-11部分:限制-公共低压供电系统中电压变化、电压波动和闪烁的限制-额定电流设备》的第二版≤ 75 A，并受制于条件连接，这是采用相同名称的IEC（国际电工委员会）标准61000-3-11（第二版，2017-04），带有加拿大偏差。它取代了2006年发布的前一版CAN/CSA-C61000-3-11（采用IEC 61000-3-11:2000）。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 61000的这一部分涉及设备产生的电压变化、电压波动和闪烁的发射，并施加在公共低压电路上- 电压供应系统。它规定了在特定条件下测试的设备产生的电压变化限值。本文件主要适用于额定输入电流为16 a至75 a（含75 a）的电气和电子设备，该设备拟连接至标称系统电压在220 V至250 V之间的公共低压配电系统，线路至中性点的频率为50 Hz，且需要有条件连接。本文件也适用于IEC 61000-3-3范围内的设备，这些设备在使用参考阻抗Zrefand进行测试或评估时不符合限制，因此需要进行有条件连接。符合IEC 61000-3-3要求的设备不包括在IEC 61000的本部分中。根据本文件进行的设备试验为型式试验。 注1:本文件中规定的闪烁限值与IEC 61000-3-3中规定的相同，是基于230 V/60 W盘管式白炽灯在电源电压波动时产生的闪烁的主观严重性。对于标称电压小于220 V、线对中性点和/或频率为60 Hz的系统，极限值和参考电路值正在考虑之中。注2:本文件中的限值与公共供电低压网络和设备用户安装之间接口处连接的用户所经历的电压变化有关。因此，不能保证符合本标准的设备的用户不会因单独操作本设备而在其自身安装中遇到供电干扰，因为设备与装置内电源连接点的阻抗可能大于本文件中程序确定的最大允许阻抗。

Preface:This is the second edition of CSA C61000-3-11,Electromagnetic compatibility (EMC) — Part 3-11: Limits — Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems — Equipment with rated current ≤ 75 A and subject to conditional connection, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 61000-3-11 (second edition, 2017-04). It supersedes the previous edition, published in 2006 as CAN/CSA-C61000-3-11 (adopted IEC 61000-3-11:2000).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 61000 is concerned with the emission of voltage changes, voltage fluctuations and flicker produced by equipment and impressed on the public low-voltage supply system.It specifies the limits of voltage changes produced by equipment tested under specified conditions.This document is primarily applicable to electrical and electronic equipment having a rated input current from 16 A up to and including 75 A, which is intended to be connected to public low-voltage distribution systems having nominal system voltages of between 220 V and 250 V, line-to-neutral at 50 Hz, and which is subject to conditional connection.This document is also applicable to equipment within the scope of IEC 61000-3-3 that does not meet the limits when tested or evaluated with reference impedance Zrefand is therefore subject to conditional connection. Equipment which meets the requirements of IEC 61000-3-3 is excluded from this part of IEC 61000.Equipment tests made in accordance with this document are type tests.NOTE 1 The flicker limits specified in this document, being the same as those in IEC 61000-3-3, are based on the subjective severity of the flicker imposed on the light from 230 V/60 W coiled-coil filament lamps when subjected to fluctuations of the supply voltage. For systems with nominal voltages less than 220 V, line-to-neutral and/or frequency of 60 Hz, the limits and reference circuit values are under consideration.NOTE 2 The limits in this document relate to the voltage changes experienced by consumers connected at the interface between the public supply low-voltage network and the equipment user's installation. Therefore, it cannot be guaranteed that the users of equipment compliant with this standard will not experience supply disturbance within their own installation due to the operation of this equipment alone, as the impedance at the point of connection of the equipment to the supply within the installation can have an impedance greater than the maximum permissible impedance as determined by the procedures in this document.