{"id":254802,"date":"2024-10-19T16:50:20","date_gmt":"2024-10-19T16:50:20","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-61558-2-92011\/"},"modified":"2024-10-25T12:16:18","modified_gmt":"2024-10-25T12:16:18","slug":"bs-en-61558-2-92011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-61558-2-92011\/","title":{"rendered":"BS EN 61558-2-9:2011"},"content":{"rendered":"

Replacement:<\/i><\/p>\n

This part of IEC 61558 deals with the safety of transformers<\/b> for class III handlamps for tungsten filament lamps<\/b> and power supply units<\/b> incorporating transformers<\/b> for class III handlamps for tungsten filament lamps<\/b>. Transformers<\/b> incorporating electronic circuits<\/b> are also covered by this standard.<\/p>\n

\n

NOTE 1 Safety includes electrical, thermal, mechanical and chemical aspects.<\/p>\n<\/blockquote>\n

Unless otherwise specified, from here onward, the term transformer<\/b> covers transformers<\/b> for class III handlamps for tungsten filament lamps<\/b> and power supply units<\/b> incorporating transformers<\/b> for class III handlamps for tungsten filament lamps<\/b>.<\/p>\n

This part is applicable to stationary<\/b> or portable<\/b> single-phase air-cooled (natural or forced) independent<\/b> or associated dry-type transformers.<\/b> The windings may be encapsulated or non-encapsulated.<\/p>\n

This standard is applicable to transformers<\/b> and power supply<\/b> (linear) with internal operational frequencies<\/b> not exceeding 500 Hz.<\/p>\n

This standard used in combination with Part 2-16 for switch mode power supply<\/b> (SMPS<\/b>) units is also applicable to power supplies with internal operational frequencies<\/b> higher than 500 Hz. Where the two requirements are in conflict, the most severe take precedence.<\/p>\n

The rated supply voltage<\/b> does not exceed 1 000 V a.c., and the rated supply frequency<\/b> and the internal operational frequencies<\/b> do not exceed 500 Hz.<\/p>\n

Transformers<\/b> for class III handlamps for tungsten filament lamps<\/b> have the following additional characteristics:<\/p>\n

    \n
  • \n

    \u2013 the no-load output voltage<\/b> and the rated output voltage<\/b> do not exceed 50 V a.c. or 120 V ripple-free d.c.;<\/p>\n<\/li>\n

  • \n

    \u2013 there is only a small difference between the no-load voltage<\/b> and the rated output voltage<\/b>.<\/p>\n<\/li>\n<\/ul>\n

    The rated output<\/b> does not exceed:<\/p>\n

      \n
    • \n

      \u2013 10 kVA.<\/p>\n<\/li>\n<\/ul>\n

      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<\/b>.<\/p>\n

      Transformers<\/b> covered by this part are used in applications where double or reinforced insulation<\/b> between circuits is required by the installation rules or by the end product standard.<\/p>\n

      \n

      NOTE 2 Attention is drawn to the following:<\/p>\n

        \n
      • \n

        \u2013 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

      • \n

        \u2013 measures to protect the enclosure<\/b> and the components inside the enclosure<\/b> against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered;<\/p>\n<\/li>\n

      • \n

        \u2013 the different conditions for transportation, storage, and operation of the transformers<\/b> should also be considered;<\/p>\n<\/li>\n

      • \n

        \u2013 additional requirements in accordance with other appropriate standards and national rules may be applicable to transformers<\/b> intended for use in special environments.<\/p>\n<\/li>\n<\/ul>\n<\/blockquote>\n

        \n

        NOTE 3 Future technological development of transformers<\/b> 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

        PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n
        PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
        7<\/td>\nEnglish
        CONTENTS <\/td>\n<\/tr>\n
        8<\/td>\n1 Scope <\/td>\n<\/tr>\n
        9<\/td>\n2 Normative references
        3 Terms and definitions
        4 General requirements
        5 General notes on tests
        6 Ratings <\/td>\n<\/tr>\n
        10<\/td>\n7 Classification
        8 Marking and other information
        9 Protection against electric shock <\/td>\n<\/tr>\n
        11<\/td>\n10 Change of input voltage setting
        11 Output voltage and output current under load
        12 No-load output voltage
        Table 101 \u2013 Ratio of output voltages for transformers for class III tungsten filament handlamps <\/td>\n<\/tr>\n
        12<\/td>\n13 Short-circuit voltage
        14 Heating
        15 Short-circuit and overload protection
        16 Mechanical strength
        17 Protection against harmful ingress of dust, solid objects and moisture
        18 Insulation resistance, dielectric strength and leakage current
        19 Construction <\/td>\n<\/tr>\n
        14<\/td>\n20 Components
        21 Internal wiring
        22 Supply connection and other external flexible cable or cords
        23 Terminals for external conductors <\/td>\n<\/tr>\n
        15<\/td>\n24 Provisions for protective earthing
        25 Screws and connections
        26 Creepage distances, clearances and distances through insulation
        27 Resistance to heat, fire and tracking
        28 Resistance to rusting <\/td>\n<\/tr>\n
        16<\/td>\nAnnexes
        Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

        Safety of transformers, reactors, power supply units and combinations thereof – Particular requirements and tests for transformers and power supply units for class III handlamps for tungsten filament lamps<\/b><\/p>\n\n\n\n\n
        Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
        BSI<\/b><\/a><\/td>\n2011<\/td>\n18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":254807,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-254802","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\/254802","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\/254807"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=254802"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=254802"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=254802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}