{"id":2294,"date":"2025-12-29T14:13:47","date_gmt":"2025-12-29T06:13:47","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=2294"},"modified":"2025-12-29T14:23:20","modified_gmt":"2025-12-29T06:23:20","slug":"differences-between-iec-61643-012024-and-iec-61643-112025","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/fr\/blog\/differences-between-iec-61643-012024-and-iec-61643-112025\/","title":{"rendered":"Diff\u00e9rences entre la CEI 61643-01:2024 et la CEI 61643-11:2025"},"content":{"rendered":"Par rapport \u00e0 la norme CEI 61643-01:2024, la version CEI 61643-11:2025 int\u00e8gre les modifications techniques importantes suivantes\u00a0:\r\n
    \r\n \t
  1. Clarified the applicability of tests, which can be applied to complete SPDs, supply protection modes, or complete \"SPD components\".<\/li>\r\n \t
  2. Introduced additional measurements for the voltage protection level of \"combined protection modes\" between phase conductor and protective earth (PE) (see new Annex F).<\/li>\r\n \t
  3. Ajout d'un test de fonctionnement suppl\u00e9mentaire pour les SPD de type 1 et de type 2 afin de v\u00e9rifier l'augmentation du courant de suivi sous de faibles amplitudes de courant d'impulsion (voir la clause 9.3.5.5).<\/li>\r\n \t
  4. Modification et compl\u00e9ment des exigences d'essai de courant de court-circuit pour mieux couvrir les derni\u00e8res technologies de d\u00e9connexion interne du SPD (voir la clause 9.3.6.3).<\/li>\r\n \t
  5. Improved the withstand voltage test requirements for the SPD main circuit and added new withstand voltage test requirements for \"electrically isolated circuits\" (see Clauses 9.3.7 and 9.3.8).<\/li>\r\n \t
  6. Added additional clearance requirements for \"electrically isolated circuits\" (see Clause 9.4.4).<\/li>\r\n \t
  7. Fourni des informations suppl\u00e9mentaires et des exigences d\u00e9taill\u00e9es pour les SPD destin\u00e9s aux installations DC.<\/li>\r\n<\/ol>\r\n \r\n\r\nIntroduction to IEC 61643-11:2025\r\n\r\n \r\n\r\nIEC 61643-11:2025 is based on IEC 61643-01:2024 and adds specific test items applicable to AC systems. These tests are set for SPDs that will be connected to AC supply circuits powered by sources having a linear voltage-current characteristic. Special consideration is required if the SPD is to be connected to other forms of power sources or sources with different frequencies.\r\n\r\n \r\n\r\nAnnex G: Test Procedures for SPDs Combining Short-Circuit Protection and Surge Protection Functionality (Non-Separable)\r\n\r\n \r\n\r\nThe SPD described in Annex G consists of two parts connected in series: one is a composite unit integrating both surge protection function and short-circuit protection function (this composite unit is integral and cannot be physically separated during testing or sample preparation), and the other is a surge protection component (SPC), typically including voltage-limiting or voltage-switching components. SPDs with combined protection functions require specific short-circuit tests and overload tests, both of which necessitate preparing special test samples.\r\n\r\n \r\n\r\n1. Short-Circuit Test\r\n\r\n* Three \"Type A\" and three \"Type B\" samples must be prepared. Each sample is tested individually. Either AC or DC supply may be used, depending on which facilitates stable test current flow through the sample. The current amplitude is between 1A and 20A, as declared by the manufacturer. The source voltage under open-circuit conditions must not be less than 1200V and should be high enough to maintain a stable current through the sample.\r\n\r\n* An overload test is performed on the \"Type A\" samples. The test voltage is applied across the sample, and the resistance in the test circuit is adjusted to achieve the required current until the sample fails (either short-circuit or open-circuit). The duration of the test is recorded. This procedure is repeated for the other two \"Type A\" samples, and the longest duration among the three is used as the benchmark to determine the test duration for the \"Type B\" samples. The \"Type B\" samples are then tested following the same procedure, but the test duration is set to the longest duration from the \"Type A\" samples plus 0.5 seconds.\r\n\r\n* After the test, Type B samples shall still provide short-circuit protection function, verified as follows:\r\n
      \r\n \t
    1. * un. Lorsque Uc \u2264 440 V, la tension de choc est de 2,5 kV ou 120% de Up (selon la valeur la plus \u00e9lev\u00e9e).<\/li>\r\n \t
    2. *B. Lorsque 440 V < Uc \u2264 800 V, la tension de choc est de 4,0 kV ou 120% de Up (selon la valeur la plus \u00e9lev\u00e9e).<\/li>\r\n \t
    3. *c. Lorsque Uc > 800 V, la tension de choc est de 6,0 kV ou 120% de Up (selon la valeur la plus \u00e9lev\u00e9e).<\/li>\r\n<\/ol>\r\n* The impulse voltage amplitude must be corrected for altitude. No discharge or breakdown should occur during the application of the 1.2\/50 \u03bcs impulse wave.\r\n\r\n \r\n\r\n2. Overload Test\r\n\r\n* To verify the comprehensive performance of the SPD, considering that impulse currents conducted over its lifetime might adversely affect it\u2019s short-circuit protection capability, an additional preconditioning test (operating duty test) is required before the short-circuit test for all prepared samples.\r\n\r\n* Six \"Type A\" and six \"Type B\" samples are prepared. For \"Type A\" samples, the part combining surge and short-circuit protection is replaced by an appropriate copper block, while internal connections, cross-sections, surrounding materials (e.g., resin), and packaging remain unchanged. For \"Type B\" samples, the surge protection component (SPC) connected in series with the combined protection function is replaced by an appropriate copper block, maintaining other physical aspects.\r\n\r\n* The prepared \"Type A\" and \"Type B\" samples are connected in series for the preconditioning test (operating duty test).\r\n\r\n* Use the preconditioned Type B samples for the short-circuit test: three samples undergo the claimed rated short-circuit current test (Isccr); the other three undergo a low short-circuit current test, where the test current is calculated as: Imin<\/sub>\/JEmin<\/sub>\u00a0+ 0,05 \u00d7(jeSCCR<\/sub>\u00a0\u2212 Jemin<\/sub>\u00a0)\/JEmin<\/sub>\u00a0+ 0,1 \u00d7(jeSCCR<\/sub>\u00a0\u2212 Jemin<\/sub>\u00a0). Each sample is tested at one current value.\r\n\r\n* Since Type B samples have combined protection, short-circuit current may not necessarily flow through them when Utest is applied; therefore, trigger short-circuit current using impulse current or a combination wave according to classification: for T1 and T2 class samples, a 3 kA, 8\/20 \u03bcs current with amplitude equal to Iimp or In (whichever is lower) is applied; for T3 class samples, a 6 kV combination wave or Uoc (whichever is lower) is applied. If the short-circuit current cannot be triggered with these levels, the amplitude can be increased up to Iimp, In, or Uoc.\r\n\r\n* After the test, in addition to meeting short-circuit criteria, the following additional requirement applies: after the disconnector operates, apply a 1.2\/50ps impulse and verify:\r\n
        \r\n \t
      1. La r\u00e9sistance d'isolement mesur\u00e9e \u00e0 Uc ne d\u00e9passe pas 2 M\u03a9 ou la r\u00e9duction par rapport \u00e0 la valeur de pr\u00e9-test ne d\u00e9passe pas 20%.<\/li>\r\n \t
      2. Si cette exigence de r\u00e9sistance d'isolement n'est pas satisfaite, effectuez le test de courant de court-circuit nominal revendiqu\u00e9 (ISCCR<\/sub>) et r\u00e9pondent aux crit\u00e8res post-court-circuit pertinents.<\/li>\r\n<\/ol>\r\n \r\n\r\n3. Dedicated Overload Test\r\n\r\n* This test does not require special sample preparation but must be performed on each protection mode of the sample. Based on the Uc value of the different protection modes, a preconditioning voltage is applied to that mode, graded as follows:\r\n\r\n*When Uc \u2264 180V:\r\n
          \r\n \t
        1. * un. Pour les modes de commutation de tension et de protection combin\u00e9e, la tension de pr\u00e9conditionnement est de 600 V, \u00e0 laquelle le composant de commutation de tension doit pouvoir conduire.<\/li>\r\n \t
        2. *B. Pour les autres modes de protection, la tension de pr\u00e9conditionnement est de 1200V.<\/li>\r\n<\/ol>\r\n*When 180V < Uc \u2264 440V, the preconditioning voltage is 1200V.\r\n\r\n*When Uc > 440V, the preconditioning voltage is 3 times Uc.\r\n\r\n* The preconditioning voltage is applied for 5 seconds, during which the prospective short-circuit current through the sample is between 1A and 20A, as declared by the manufacturer. After the preconditioning voltage, the Utest voltage is applied for 5 minutes, or if an internal or external disconnector in the sample operates during preconditioning, the Utest is applied for at least 0.5 seconds after the disconnector operates. During the application of Utest, the prospective short-circuit current through the sample is set to 100A, 500A, 1000A, or ISCCR, selected based on actual conditions (not all values are necessarily tested for every sample).\r\n\r\n* If all measurements from the first set of samples (test setup for 100A) meet the following criteria, further testing at higher currents may not be necessary:\r\n
            \r\n \t
          1. La d\u00e9connexion se produit dans les 5 secondes suivant l'application de la tension de pr\u00e9conditionnement.<\/li>\r\n \t
          2. Le courant circulant \u00e0 travers l\u2019\u00e9chantillon pendant l\u2019application Utest apr\u00e8s pr\u00e9conditionnement ne d\u00e9passe pas 1 mA.<\/li>\r\n \t
          3. L'augmentation du courant circulant \u00e0 travers l'\u00e9chantillon lors de l'application Utest apr\u00e8s pr\u00e9conditionnement ne d\u00e9passe pas 20% de la valeur initiale d\u00e9termin\u00e9e sous Utest avant le test.<\/li>\r\n<\/ol>\r\n* The pass\/fail criteria after the test differ depending on whether the sample experienced disconnection.\r\n\r\n \r\n\r\n4. Simplified Test Procedure for Series-Connected Protection Modes\r\n\r\nThis simplified procedure can be applied to samples like 3P+NPE or 1P+NPE, which may have multiple protection modes (e.g., L-N, N-PE, L-PE, L-L). Since the L-PE protection mode is essentially a series combination of the L-N and N-PE protection modes, testing all three modes separately according to standard requirements could lead to redundant testing for the L-PE mode. Therefore, the standard specifies a simplified test procedure for series-connected protection modes (e.g., L-PE).\r\n\r\nA series-connected protection mode (e.g., L-PE) can be tested using the simplified procedure only if it meets all the following conditions:\r\n
              \r\n \t
            1. Le SPD est install\u00e9 uniquement dans les syst\u00e8mes TN ou TT.<\/li>\r\n \t
            2. Il est d\u00e9clar\u00e9 que ce mode de protection (par exemple L-PE) est form\u00e9 par la connexion en s\u00e9rie d'autres modes de protection (par exemple L-N et N-PE).<\/li>\r\n \t
            3. La valeur Uc du mode de protection connect\u00e9 en s\u00e9rie (par exemple L-PE) ne d\u00e9passe pas la valeur Uc la plus \u00e9lev\u00e9e des diff\u00e9rents modes de protection qui le composent (par exemple L-N : Uc=275 V, N-PE : Uc=255 V, puis L-PE : Uc \u2264 275 V).<\/li>\r\n \t
            4. Les valeurs des param\u00e8tres d'impulsion (Iimp, In ou UOC) du mode de protection connect\u00e9 en s\u00e9rie (par exemple L-PE) ne d\u00e9passent pas les valeurs correspondantes des modes de protection individuels qui le composent.<\/li>\r\n<\/ol>","protected":false},"featured_media":2295,"parent":0,"menu_order":82,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2294","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"IEC 61643-11:2025 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages.","txt":"Compared to the IEC 61643-01:2024, the IEC 61643-11:2025 version incorporates the following significant technical changes:\r\n
                \r\n \t
              1. Clarified the applicability of tests, which can be applied to complete SPDs, supply protection modes, or complete \"SPD components\".<\/li>\r\n \t
              2. Introduced additional measurements for the voltage protection level of \"combined protection modes\" between phase conductor and protective earth (PE) (see new Annex F).<\/li>\r\n \t
              3. Added an additional operating duty test for Type 1 and Type 2 SPDs to check for increased follow current under low impulse current amplitudes (see Clause 9.3.5.5).<\/li>\r\n \t
              4. Modified and supplemented the short-circuit current test requirements to better cover the latest SPD internal disconnection technologies (see Clause 9.3.6.3).<\/li>\r\n \t
              5. Improved the withstand voltage test requirements for the SPD main circuit and added new withstand voltage test requirements for \"electrically isolated circuits\" (see Clauses 9.3.7 and 9.3.8).<\/li>\r\n \t
              6. Added additional clearance requirements for \"electrically isolated circuits\" (see Clause 9.4.4).<\/li>\r\n \t
              7. Provided additional information and detailed requirements for SPDs intended for DC installations.<\/li>\r\n<\/ol>\r\n \r\n\r\nIntroduction to IEC 61643-11:2025\r\n\r\n \r\n\r\nIEC 61643-11:2025 is based on IEC 61643-01:2024 and adds specific test items applicable to AC systems. These tests are set for SPDs that will be connected to AC supply circuits powered by sources having a linear voltage-current characteristic. Special consideration is required if the SPD is to be connected to other forms of power sources or sources with different frequencies.\r\n\r\n \r\n\r\nAnnex G: Test Procedures for SPDs Combining Short-Circuit Protection and Surge Protection Functionality (Non-Separable)\r\n\r\n \r\n\r\nThe SPD described in Annex G consists of two parts connected in series: one is a composite unit integrating both surge protection function and short-circuit protection function (this composite unit is integral and cannot be physically separated during testing or sample preparation), and the other is a surge protection component (SPC), typically including voltage-limiting or voltage-switching components. SPDs with combined protection functions require specific short-circuit tests and overload tests, both of which necessitate preparing special test samples.\r\n\r\n \r\n\r\n1. Short-Circuit Test\r\n\r\n* Three \"Type A\" and three \"Type B\" samples must be prepared. Each sample is tested individually. Either AC or DC supply may be used, depending on which facilitates stable test current flow through the sample. The current amplitude is between 1A and 20A, as declared by the manufacturer. The source voltage under open-circuit conditions must not be less than 1200V and should be high enough to maintain a stable current through the sample.\r\n\r\n* An overload test is performed on the \"Type A\" samples. The test voltage is applied across the sample, and the resistance in the test circuit is adjusted to achieve the required current until the sample fails (either short-circuit or open-circuit). The duration of the test is recorded. This procedure is repeated for the other two \"Type A\" samples, and the longest duration among the three is used as the benchmark to determine the test duration for the \"Type B\" samples. The \"Type B\" samples are then tested following the same procedure, but the test duration is set to the longest duration from the \"Type A\" samples plus 0.5 seconds.\r\n\r\n* After the test, Type B samples shall still provide short-circuit protection function, verified as follows:\r\n
                  \r\n \t
                1. * a. When Uc \u2264 440V, the impulse voltage is 2.5kV or 120% of Up (whichever is higher).<\/li>\r\n \t
                2. * b. When 440V < Uc \u2264 800V, the impulse voltage is 4.0kV or 120% of Up (whichever is higher).<\/li>\r\n \t
                3. * c. When Uc > 800V, the impulse voltage is 6.0kV or 120% of Up (whichever is higher).<\/li>\r\n<\/ol>\r\n* The impulse voltage amplitude must be corrected for altitude. No discharge or breakdown should occur during the application of the 1.2\/50 \u03bcs impulse wave.\r\n\r\n \r\n\r\n2. Overload Test\r\n\r\n* To verify the comprehensive performance of the SPD, considering that impulse currents conducted over its lifetime might adversely affect it\u2019s short-circuit protection capability, an additional preconditioning test (operating duty test) is required before the short-circuit test for all prepared samples.\r\n\r\n* Six \"Type A\" and six \"Type B\" samples are prepared. For \"Type A\" samples, the part combining surge and short-circuit protection is replaced by an appropriate copper block, while internal connections, cross-sections, surrounding materials (e.g., resin), and packaging remain unchanged. For \"Type B\" samples, the surge protection component (SPC) connected in series with the combined protection function is replaced by an appropriate copper block, maintaining other physical aspects.\r\n\r\n* The prepared \"Type A\" and \"Type B\" samples are connected in series for the preconditioning test (operating duty test).\r\n\r\n* Use the preconditioned Type B samples for the short-circuit test: three samples undergo the claimed rated short-circuit current test (Isccr); the other three undergo a low short-circuit current test, where the test current is calculated as: Imin<\/sub>\/Imin<\/sub>\u00a0+ 0.05 \u00d7(ISCCR<\/sub>\u00a0\u2212 Imin<\/sub>\u00a0)\/Imin<\/sub>\u00a0+ 0.1 \u00d7(ISCCR<\/sub>\u00a0\u2212 Imin<\/sub>\u00a0). Each sample is tested at one current value.\r\n\r\n* Since Type B samples have combined protection, short-circuit current may not necessarily flow through them when Utest is applied; therefore, trigger short-circuit current using impulse current or a combination wave according to classification: for T1 and T2 class samples, a 3 kA, 8\/20 \u03bcs current with amplitude equal to Iimp or In (whichever is lower) is applied; for T3 class samples, a 6 kV combination wave or Uoc (whichever is lower) is applied. If the short-circuit current cannot be triggered with these levels, the amplitude can be increased up to Iimp, In, or Uoc.\r\n\r\n* After the test, in addition to meeting short-circuit criteria, the following additional requirement applies: after the disconnector operates, apply a 1.2\/50ps impulse and verify:\r\n
                    \r\n \t
                  1. Insulation resistance measured at Uc does not exceed 2 M\u03a9 or the reduction compared with the pre-test value does not exceed 20%.<\/li>\r\n \t
                  2. If this insulation resistance requirement is not met, perform the claimed rated short-circuit current test (ISCCR<\/sub>) and meet the relevant post-short-circuit criteria.<\/li>\r\n<\/ol>\r\n \r\n\r\n3. Dedicated Overload Test\r\n\r\n* This test does not require special sample preparation but must be performed on each protection mode of the sample. Based on the Uc value of the different protection modes, a preconditioning voltage is applied to that mode, graded as follows:\r\n\r\n*When Uc \u2264 180V:\r\n
                      \r\n \t
                    1. * a. For voltage-switching and combined protection modes, the preconditioning voltage is 600V, at which the voltage-switching component must be able to conduct.<\/li>\r\n \t
                    2. * b. For other protection modes, the preconditioning voltage is 1200V.<\/li>\r\n<\/ol>\r\n*When 180V < Uc \u2264 440V, the preconditioning voltage is 1200V.\r\n\r\n*When Uc > 440V, the preconditioning voltage is 3 times Uc.\r\n\r\n* The preconditioning voltage is applied for 5 seconds, during which the prospective short-circuit current through the sample is between 1A and 20A, as declared by the manufacturer. After the preconditioning voltage, the Utest voltage is applied for 5 minutes, or if an internal or external disconnector in the sample operates during preconditioning, the Utest is applied for at least 0.5 seconds after the disconnector operates. During the application of Utest, the prospective short-circuit current through the sample is set to 100A, 500A, 1000A, or ISCCR, selected based on actual conditions (not all values are necessarily tested for every sample).\r\n\r\n* If all measurements from the first set of samples (test setup for 100A) meet the following criteria, further testing at higher currents may not be necessary:\r\n
                        \r\n \t
                      1. Disconnection occurs within the 5 seconds of preconditioning voltage application.<\/li>\r\n \t
                      2. The current flowing through the sample during Utest application after preconditioning does not exceed 1mA.<\/li>\r\n \t
                      3. The increase in current flowing through the sample during Utest application after preconditioning does not exceed 20% of the initial value determined under Utest before the test.<\/li>\r\n<\/ol>\r\n* The pass\/fail criteria after the test differ depending on whether the sample experienced disconnection.\r\n\r\n \r\n\r\n4. Simplified Test Procedure for Series-Connected Protection Modes\r\n\r\nThis simplified procedure can be applied to samples like 3P+NPE or 1P+NPE, which may have multiple protection modes (e.g., L-N, N-PE, L-PE, L-L). Since the L-PE protection mode is essentially a series combination of the L-N and N-PE protection modes, testing all three modes separately according to standard requirements could lead to redundant testing for the L-PE mode. Therefore, the standard specifies a simplified test procedure for series-connected protection modes (e.g., L-PE).\r\n\r\nA series-connected protection mode (e.g., L-PE) can be tested using the simplified procedure only if it meets all the following conditions:\r\n
                          \r\n \t
                        1. The SPD is installed only in TN- or TT-systems.<\/li>\r\n \t
                        2. It is declared that this protection mode (e.g., L-PE) is formed by the series connection of other protection modes (e.g., L-N and N-PE).<\/li>\r\n \t
                        3. The Uc value of the series-connected protection mode (e.g., L-PE) does not exceed the higher Uc value of the individual protection modes forming it (e.g., L-N: Uc=275V, N-PE: Uc=255V, then L-PE: Uc \u2264 275V).<\/li>\r\n \t
                        4. The impulse parameter values (Iimp, In, or UOC) of the series-connected protection mode (e.g., L-PE) do not exceed the corresponding values of the individual protection modes forming it.<\/li>\r\n<\/ol>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/blog\/2294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/media\/2295"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/media?parent=2294"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/blog_category?post=2294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}