前言:这是CSA IEC 61558-2-6的第二版，电源电压高达1100 V的变压器、电抗器、电源装置和类似产品的安全-第2-6部分:安全隔离变压器和包含安全隔离变压器的电源装置的特殊要求和试验，这是在没有修改同名IEC（国际电工委员会）标准61558-2-6（第二版，2009-02）的情况下采用的。它取代了2003年出版的前一版本，即CAN/CSA-E61558-2-6（采用IEC 61558-2-6:1997），电力变压器、电源装置和类似设备的安全-第2部分:通用安全隔离变压器的特殊要求。本标准拟与CAN/CSA-E61558-1:12《电力变压器、电源、电抗器和类似产品的安全第1部分:一般要求和试验》（采用IEC 61558）结合使用- 1:2005+A1:2009，加拿大偏差）。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 61558的本部分涉及一般应用的安全隔离变压器和包含一般应用的安全隔离变压器的电源装置的安全。包含电子电路的变压器也包含在本标准中。注1:安全包括电气、热力和机械方面。除非另有规定，从这里开始，变压器一词包括一般应用的安全隔离变压器和包含一般应用的安全隔离变压器的电源装置。注2:对于电源装置（线性），本部分适用。对于开关电源装置，IEC 61558- 2-16适用于本部分。本部分适用于固定式或便携式、单相或多相、风冷（自然或强制）独立或相关干式变压器。绕组可以是封装的或非封装的。额定电源电压不超过1100 V a.c.，额定电源频率和内部工作频率不超过500 Hz。额定输出不超过:单相变压器为10 kVA；多相变压器为16 kVA。根据买方和制造商之间的协议，本部分适用于不限制额定输出的变压器。注3:拟为配电网供电的变压器不包括在范围内。空载输出电压或额定输出电压不超过50 V交流或120 V无纹波直流。本部分不适用于拟连接至变压器输入端子和输出端子的外部电路及其部件。 本部分涵盖的变压器用于安装规则或最终产品标准要求电路间双重或加强绝缘的应用中。注4:应注意以下事项:对于拟用于车辆、船舶和飞机的变压器，可能需要额外的要求（来自其他适用标准、国家规则等）；还应考虑采取措施保护外壳和外壳内的组件免受外部影响，如真菌、害虫、白蚁、太阳辐射和结冰；还应考虑变压器运输、储存和运行的不同条件；符合其他适当标准和国家规则的附加要求可能适用于在特殊环境中使用的变压器。注5:变压器的未来技术发展可能需要增加频率上限，在此之前，本部分可作为指导文件使用。

Preface:This is the second edition of CSA IEC 61558-2-6,Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V — Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers, which is an adoption without modification of the identically titled IEC (International Electrotechnical Commission) Standard 61558-2-6 (second edition, 2009-02). It supersedes the previous edition published in 2003 as CAN/CSA-E61558-2-6 (adopted IEC 61558-2-6:1997),Safety of power transformers, power supply units and similar — Part 2: Particular requirements for safety isolating transformers for general use.This Standard is intended to be used in conjunction with CAN/CSA-E61558-1:12,Safety of power transformers, power supplies, reactors and similar products — Part 1: General requirements and tests(adopted IEC 61558-1:2005+A1:2009, with Canadian deviations).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 61558 deals with the safety of safety isolating transformers for general applications and power supply units incorporating safety isolating transformers for general applications. Transformers incorporating electronic circuits are also covered by this standard.NOTE 1 Safety includes electrical, thermal and mechanical aspects.Unless otherwise specified, from here onward, the term transformer covers safety isolating transformers for general applications and power supply units incorporating safety isolating transformers for general applications.NOTE 2 For power supply units (linear) this part is applicable. For switch mode power supply units, IEC 61558-2-16 is applicable together with this part.This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent or associated dry- type transformers. The windings may be encapsulated or non-encapsulated.The rated supply voltage does not exceed 1 100 V a.c., and the rated supply frequency and the internal operating frequencies do not exceed 500 Hz.The rated output does not exceed:10 kVA for single-phase transformers;16 kVA for polyphase transformers.This part is applicable to transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer.NOTE 3 Transformers intended to supply distribution networks are not included in the scope.The no-load output voltage or the rated output voltage does not exceed 50 V a.c. or 120 V ripple-free d.c.This part is not applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers.Transformers covered by this part are used in applications where double or reinforced insulation between circuits is required by the installation rules or by the end product standard.NOTE 4 Attention is drawn to the following:for transformers intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary;measures to protect the enclosure and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered;the different conditions for transportation, storage, and operation of the transformers should also be considered;additional requirements in accordance with other appropriate standards and national rules may be applicable to transformers intended for use in special environments.NOTE 5 Future technological development of transformers may necessitate a need to increase the upper limit of the frequencies, until then this part may be used as a guidance document.