Replacement:<\/i><\/p>\n
This part of IEC 61558 deals with the safety of switch mode power supply units<\/b> and transformers<\/b> for switch mode power supply units<\/b>. Transformers<\/b> incorporating electronic circuits<\/b> are also covered by this standard.<\/p>\n NOTE 1 Safety includes electrical, thermal and mechanical aspects.<\/p>\n<\/blockquote>\n This part applies to:<\/p>\n switch mode power supply units<\/b> incorporating safety isolating transformers<\/b> providing SELV<\/b>, PELV<\/b> or FELV<\/b> a.c. or d.c. output voltage(s)<\/b>, or a combination thereof according to IEC 61140 and IEC 60364-4-41 for use with household and other consumer products, except for products covered by IEC 60065, IEC 61347 series, IEC 61204-7 and IEC 60950-1;<\/p>\n<\/li>\n switch mode power supply units<\/b> with a maximum output voltage<\/b> not exceeding 1 000 V a.c. or 1 414 V ripple-free d.c. for use with household and other consumer products, except for products covered in a) and products covered by IEC 60065, IEC 61347 series, IEC 61204-7 and IEC 60950-1;<\/p>\n<\/li>\n this standard may be used for transformers<\/b> for use in switch mode power supply units<\/b> (see Annex BB).<\/p>\n<\/li>\n<\/ol>\n This part covers the safety requirements for:<\/p>\n separating SMPS for general use corresponding to Part 2-1;<\/p>\n<\/li>\n isolating SMPS for general use corresponding to Part 2-4;<\/p>\n<\/li>\n safety isolating SMPS for general use corresponding to Part 2-6;<\/p>\n<\/li>\n auto-SMPS for general use corresponding to Part 2-13.<\/p>\n<\/li>\n<\/ul>\n For SMPS for specific application corresponding to the other Parts 2 of 61558 series, the necessary requirements of the relevant Parts 2 are applicable. In addition, the requirements listed in this part apply. Where the two requirements are in conflict, the most severe take precedence.<\/p>\n NOTE 2 As the maximum rated supply voltage<\/b> of the internal transformer is 1 000 V, the maximum rated supply voltage<\/b> of the switch mode power supply<\/b> may be lower due to type of rectification.<\/p>\n<\/blockquote>\n Switch mode power supply units<\/b> covered by this standard are air cooled (natural or forced) independent<\/b>, associated<\/b>, stationary<\/b>, portable<\/b>, single-phase, or polyphase, with the rated supply voltage<\/b> not exceeding 1 100 V a.c., the rated supply frequency<\/b> not exceeding 500 Hz, the rated internal operating frequency<\/b> exceeding 500 Hz, but not exceeding 100 MHz, and the rated output<\/b> not exceeding 1 kVA or 1 kW, incorporating dry-type transformers<\/b> with encapsulated or non-encapsulated windings.<\/p>\n Associated transformers<\/b> for switch mode power supply units<\/b> covered by Annex BB of this standard shall have a rated output<\/b> not exceeding:<\/p>\n 25 kVA for single-phase transformers<\/b>;<\/p>\n<\/li>\n 40 kVA for polyphase transformers<\/b>.<\/p>\n<\/li>\n<\/ul>\n NOTE 3 For higher frequencies, additional requirements may be necessary. However, this standard may be used as a guide.<\/p>\n<\/blockquote>\n The no-load output voltage<\/b> or the rated output voltage<\/b> of switch mode power supply units<\/b> shall not exceed:<\/p>\n 1 000 V a.c. or 1 415 V ripple-free d.c. when separating transformers<\/b> or auto-transformers<\/b> are used;<\/p>\n<\/li>\n 500 V a.c. or 708 V ripple-free d.c. when isolating transformers<\/b> are used;<\/p>\n<\/li>\n 50 V a.c. or 120 V ripple-free d.c. when safety isolating transformers<\/b> are used.<\/p>\n<\/li>\n<\/ul>\n The no-load output voltage<\/b> or the rated output voltage<\/b> of independent switch mode power supply units<\/b> shall not be less than:<\/p>\n 50 V a.c. or 120 V ripple-free d.c. when separating transformers<\/b> or autotransformers<\/b> are used.<\/p>\n<\/li>\n<\/ul>\n This standard is also applicable to switch mode power supply units<\/b>, converters and inverters without limitation of the rated output<\/b>. However, such switch mode power supply units<\/b> are for special applications and are subject to an agreement between the purchaser and the manufacturer.<\/p>\n NOTE 4 In the context of this standard, converters and invertors are considered to be switch mode power supply units.<\/p>\n<\/blockquote>\n This standard may also be used as a guide for products not covered by the scope of this standard, the scope of IEC 61204-7, or the scope of IEC 61347 series.<\/p>\n This standard does not apply to:<\/p>\n motor-generator sets;<\/p>\n<\/li>\n uninterruptible power supplies (UPS) according to IEC 62040;<\/p>\n<\/li>\n switch mode power supply units<\/b> covered by IEC 61204-7 (i.e., low-voltage power supply devices, d.c. output, performance characteristics) and d.c. power and distribution equipment and switch mode power supply units<\/b> for use in applications covered by IEC 60950-1, IEC 61010-1, IEC 60601-1, and IEC 60065;<\/p>\n<\/li>\n lamp control gear covered by IEC 61347-1;<\/p>\n<\/li>\n external circuits and their components intended to be connected to the input terminals and output terminals of the transformers<\/b>.<\/p>\n<\/li>\n<\/ul>\n NOTE 5 IEC 61204-7 will be updated by SC 22E.<\/p>\n<\/blockquote>\n NOTE 6 Attention is drawn to the following:<\/p>\n<\/blockquote>\n for transformers<\/b> intended to be used in vehicles, on board ships and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary;<\/p>\n<\/li>\n measures to protect the enclosure<\/b> and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered;<\/p>\n<\/li>\n the different conditions for transportation, storage, and operation of the transformers<\/b> should also be considered;<\/p>\n<\/li>\n additional requirements in accordance with other appropriate standards and national rules may be applicable to transformers<\/b> intended for use in special environments, such as tropical environment.<\/p>\n<\/li>\n<\/ul>\n NOTE 7 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.<\/p>\n<\/blockquote>\n Unless otherwise specified, from here onward, the term SMPS<\/b> covers switch mode power supply units<\/b>.<\/p>\n","protected":false},"excerpt":{"rendered":" Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V – Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units<\/b><\/p>\n\n
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\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2014<\/td>\n 52<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":255097,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-255093","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/255093","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/255097"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=255093"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=255093"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=255093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}