前言:这是CSA IEC 61558-2-1第二版，电力变压器、电源、电抗器和类似产品的安全-第2-1部分:一般应用中分离变压器和包含分离变压器的电源的特殊要求和试验，这是对同名IEC（国际电工委员会）标准61558-2-1（第二版，2007-01）的采用，未经修改。它取代了2003年出版的前一版本，即CAN/CSA-E61558-2-1（采用IEC 61558-2-1:1997），电力变压器、电源装置和类似设备的安全-第2部分:通用分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的本部分涉及分离变压器和包含分离变压器的电源的安全方面，如电气、热和机械安全。本第2-1部分适用于分离变压器和包含分离变压器和电子电路的电源。本第2-1部分不适用于拟连接至变压器和电源的输入端子、输出端子或插座的外部电路及其部件。本第2-1部分不适用于IEC 60076-11所涵盖的变压器。本第2-1部分适用于固定式或便携式、单相或多相空气压缩机- 冷却（自然或强制）独立和相关分离变压器和电源，额定电源电压不超过交流1000 V，额定电源和内部工作频率不超过500 Hz。额定输出不超过:单相分离变压器和包含分离变压器的单相电源的1 kVA；5 kVA用于多相分离变压器和包含分离变压器的多相电源。根据买方和制造商之间的协议，本第2-1部分适用于分离变压器和包含分离变压器的电源，但不限于额定输出。本第2-1部分适用于干式变压器。绕组可以是封装的或非封装的。空载输出电压或额定输出电压不超过交流1000 V或纹波415 V- 对于独立分离变压器和独立电源，空载输出电压和/或额定输出电压不低于50 V a.c。，或本第2-1部分涵盖的120 V无纹波直流隔离变压器仅用于安装规则或最终产品标准不要求电路间双重或加强绝缘的应用。注1:通常情况下，分离变压器和包含分离变压器的电源拟与设备一起使用，以提供不同于设备功能要求电源电压的电压。防触电保护可通过设备的其他功能提供（或完成），如车身。部分输出电路可连接至输入电路或保护接地。在相关IEC技术委员会决定的范围内，本第2-1部分适用于分离变压器和包含与特定设备相关的分离变压器的电源。 注2:应注意以下事项:对于包含用于车辆、船上和飞机的分离变压器的分离变压器和电源，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；还应考虑分离变压器和包含分离变压器的电源的不同运输、储存和运行条件；符合其他适当标准和国家规则的附加要求可能适用于分离变压器和包含用于特殊环境（如热带环境）的分离变压器的电源。 注3:分离变压器和包含分离变压器的电源的未来技术发展可能需要增加频率上限，在此之前，第2-1部分可用作指导文件。

Preface:This is the second edition of CSA IEC 61558-2-1,Safety of power transformers, power supplies, reactors and similar products — Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications, which is an adoption without modification of the identically titled IEC (International Electrotechnical Commission) Standard 61558-2-1 (second edition, 2007-01). It supersedes the previous edition published in 2003 as CAN/CSA-E61558-2-1 (adopted IEC 61558-2-1:1997),Safety of power transformers, power supply units and similar — Part 2: Particular requirements for separating 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 safety aspects of separating transformers and power supplies incorporating separating transformers such as electrical, thermal and mechanical safety.This Part 2-1 is applicable to separating transformers and power supplies incorporating both separating transformers and electronic circuits. This Part 2-1 is not applicable to external circuits and their components intended to be connected to the input terminals, output terminals or socket-outlets of the transformers and power supplies.This Part 2-1 does not apply to transformers covered by IEC 60076-11.This Part 2-1 applies to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent and associated separating transformers and power supplies, having a rated supply voltage not exceeding 1 000 V a.c., a rated supply and internal operating frequency not exceeding 500 Hz.The rated output does not exceed:1 kVA for single-phase separating transformers and single-phase power supplies incorporating separating transformers;5 kVA for poly-phase separating transformers and poly-phase power supplies incorporating separating transformers.This Part 2-1 is applicable to separating transformers and power supplies incorporating separating transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer.This Part 2-1 is applicable to dry-type transformers. The windings may be encapsulated or non-encapsulated.The no-load output voltage or the rated output voltage does not exceed 1 000 V a.c. or 1 415 V ripple-free d.c. For independent separating transformers and independent power supplies, the no-load output voltage and / or the rated output voltage is not less than 50 V a.c., or 120 V ripple-free d.c.Separating transformers covered by this Part 2-1 are used only in applications where double or reinforced insulation between circuits is not required by the installation rules or by the end product standard.NOTE 1 Normally, the separating transformers and power supplies incorporating separating transformers are intended to be used with equipment to provide voltages different from the supply voltage for the functional requirements of the equipment. The protection against electric shock may be provided (or completed) by other features of the equipment, such as the body. Parts of output circuits may be connected to the input circuits or to protective earth.This Part 2-1 is applicable to separating transformers and power supplies incorporating separating transformers associated with specific equipment, to the extent decided upon by the relevant IEC technical committees.NOTE 2 Attention is drawn to the following:for separating transformers and power supplies incorporating separating 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 separating transformers and power supplies incorporating separating transformers should also be considered;additional requirements in accordance with other appropriate standards and national rules may be applicable to separating transformers and power supplies incorporating separating transformers intended for use in special environments, such as tropical environment.NOTE 3 Future technological development of separating transformers and power supplies incorporating separating transformers may necessitate a need to increase the upper limit of the frequencies, until then this Part 2-1 may be used as a guidance document.