{"id":451734,"date":"2024-10-20T09:19:58","date_gmt":"2024-10-20T09:19:58","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-62271-1052023-tc\/"},"modified":"2024-10-26T17:23:17","modified_gmt":"2024-10-26T17:23:17","slug":"bs-en-iec-62271-1052023-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-62271-1052023-tc\/","title":{"rendered":"BS EN IEC 62271-105:2023 – TC"},"content":{"rendered":"

IEC 62271-105:2021 is available as IEC 62271-105:2021 RLV<\/span> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 62271-105:2021 applies to three-pole units for public and industrial distribution systems which are functional assemblies of switches composed of switches or switch-disconnectors and current-limiting fuses designed so as to be capable of – breaking, at the rated voltage, any current up to and including the rated short-circuit breaking current; – making, at the rated voltage, circuits to which the rated short-circuit breaking current applies. This third edition cancels and replaces the second edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – the document has been updated to be in alignment with the second edition of IEC 62271-1:2017; – rated TRV has been removed (TRV is only a test parameter), as in the latest revision of IEC 62271-100; – differentiation has been introduced between requirements expressed for fulfilling the function expected from a switch-fuse combination, from requirements only relevant when the function is performed by a stand-alone device. The goal is to avoid duplication or conflicts of requirements with a standard dealing with assemblies, when the function is implemented within such an assembly.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
80<\/td>\nundefined <\/td>\n<\/tr>\n
83<\/td>\nAnnex ZA (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
84<\/td>\nAnnex ZB (informative)A-deviations <\/td>\n<\/tr>\n
85<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
88<\/td>\nFOREWORD <\/td>\n<\/tr>\n
90<\/td>\n1 Scope <\/td>\n<\/tr>\n
91<\/td>\n2 Normative references
3 Terms and definitions
3.1 General terms and definitions
3.2 Assemblies of switchgear and controlgear
3.3 Parts of assemblies
3.4 Switching devices <\/td>\n<\/tr>\n
92<\/td>\n3.5 Parts of switchgear and controlgear <\/td>\n<\/tr>\n
93<\/td>\n3.6 Operational characteristics of switchgear and controlgear
3.7 Characteristic quantities <\/td>\n<\/tr>\n
96<\/td>\n3.101 Fuses <\/td>\n<\/tr>\n
97<\/td>\n4 Normal and special service conditions
5 Ratings
5.1 General <\/td>\n<\/tr>\n
98<\/td>\n5.2 Rated voltage (Ur)
5.3 Rated insulation level (Ud, Up, Us)
5.4 Rated frequency (fr)
5.5 Rated continuous current (Ir)
5.6 Rated short-time withstand current (Ik)
5.7 Rated peak withstand current (Ip)
5.8 Rated duration of short-circuit (tk)
5.9 Rated supply voltage of auxiliary and control circuits (Ua)
5.10 Rated supply frequency of auxiliary and control circuits
5.11 Rated pressure of compressed gas supply for controlled pressure systems <\/td>\n<\/tr>\n
99<\/td>\n5.101 Rated short-circuit breaking current
5.102 Rated short-circuit making current
5.103 Rated transfer current (striker operation) (Irtransfer)
5.104 Rated take-over current for release-operated combinations (Irto)
6 Design and construction
6.1 Requirements for liquids in switch-fuse combinations
6.2 Requirements for gases in switch-fuse combinations
6.3 Earthing of switch-fuse combinations <\/td>\n<\/tr>\n
100<\/td>\n6.4 Auxiliary and control equipment and circuits
6.5 Dependent power operation
6.6 Stored energy operation
6.7 Independent unlatched operation (independent manual or power operation)
6.8 Manually operated actuators
6.9 Operation of releases
6.10 Pressure\/level indication
6.11 Nameplates <\/td>\n<\/tr>\n
101<\/td>\nTables
Table 1 \u2013 Nameplate information <\/td>\n<\/tr>\n
102<\/td>\n6.12 Locking devices
6.13 Position indication
6.14 Degrees of protection provided by enclosures
6.15 Creepage distances for outdoor insulators
6.16 Gas and vacuum tightness
6.17 Tightness for liquid systems
6.18 Fire hazard (flammability)
6.19 Electromagnetic compatibility (EMC)
6.20 X-ray emission
6.21 Corrosion
6.22 Filling levels for insulation, switching and\/or operation
6.101 Linkages between the fuse striker(s) and the switch release
6.102 Low over-current conditions (long fuse-pre-arcing time conditions) <\/td>\n<\/tr>\n
103<\/td>\n7 Type tests
7.1 General
7.1.1 Basics
7.1.2 Information for identification of test objects
7.1.3 Information to be included in type-test reports <\/td>\n<\/tr>\n
104<\/td>\n7.2 Dielectric tests
7.3 Radio interference voltage (RIV) test
7.4 Resistance measurement
7.5 Continuous current tests
7.6 Short-time withstand current and peak withstand current tests
7.7 Verification of the protection
7.8 Tightness tests
7.9 Electromagnetic compatibility tests (EMC)
7.10 Additional tests on auxiliary and control circuits
7.11 X-radiation test for vacuum interrupters <\/td>\n<\/tr>\n
105<\/td>\n7.101 Making and breaking tests
7.101.1 General
7.101.2 Conditions for performing the tests <\/td>\n<\/tr>\n
106<\/td>\nFigures
Figure 1 \u2013 Arrangement of test circuits for test duties TDIsc and TDIWmax
Table 2 \u2013 Summary of the conditions for combining tests and alternative procedures <\/td>\n<\/tr>\n
107<\/td>\nFigure 2 \u2013 Arrangement of test circuits for test-duty TDItransfer
Figure 3 \u2013 Arrangement of test circuits for test-duty TDIto <\/td>\n<\/tr>\n
109<\/td>\nFigure 4 \u2013 Determination of power-frequency recovery voltage <\/td>\n<\/tr>\n
110<\/td>\nFigure 5 \u2013 Representation of a specified TRV by a two-parameter reference line and a delay line <\/td>\n<\/tr>\n
111<\/td>\n7.101.3 Test-duty procedures
Figure 6 \u2013 Example of a two-parameter reference line for a TRV <\/td>\n<\/tr>\n
113<\/td>\nTable 3 \u2013 Values of prospective TRV for test-duty TDItransfer based on practice in Europe <\/td>\n<\/tr>\n
114<\/td>\nTable 4 \u2013 Values of prospective TRV for test-duty TDItransfer based on practice in the United States of America <\/td>\n<\/tr>\n
115<\/td>\nFigure 7 \u2013 Characteristics for determining take-over current <\/td>\n<\/tr>\n
116<\/td>\n7.101.4 Behaviour of the combination during tests
Table 5 \u2013 Summary of test parameters for test duties <\/td>\n<\/tr>\n
117<\/td>\n7.101.5 Condition of the apparatus after testing <\/td>\n<\/tr>\n
118<\/td>\n7.102 Mechanical operation tests
7.103 Mechanical shock tests on fuses
7.104 Thermal test with long pre-arcing time of fuse <\/td>\n<\/tr>\n
119<\/td>\n7.105 Extension of validity of type tests
7.105.1 Dielectric
7.105.2 Continuous current tests
7.105.3 Making and breaking
8 Routine tests <\/td>\n<\/tr>\n
120<\/td>\n8.101 Mechanical operating tests
9 Guide to the selection of switch-fuse combinations (informative)
9.101 Guide to the selection of switch-fuse combination for transformer protection
9.101.1 General <\/td>\n<\/tr>\n
121<\/td>\n9.101.2 Rated short-circuit breaking current
9.101.3 Primary fault condition caused by a solid short-circuit on the transformer secondary terminals
Figure 8 \u2013 Transfer current in relation to the primary fault current Isc due to a solid short circuit in the transformer secondary terminal <\/td>\n<\/tr>\n
122<\/td>\n9.102 Coordination of switch and fuses for extension of the reference list of fuses
9.102.1 General
9.102.2 Rated continuous current
9.102.3 Low over-current performance
9.102.4 Transfer current
9.102.5 Take-over current <\/td>\n<\/tr>\n
123<\/td>\n9.102.6 Extension of the validity of type tests
10 Information to be given with enquiries, tenders and orders (informative)
10.1 General
10.2 Information with enquiries and orders
10.3 Information with tenders
11 Transport, storage, installation, operating instructions and maintenance <\/td>\n<\/tr>\n
124<\/td>\n12 Safety
13 Influence of the product on the environment <\/td>\n<\/tr>\n
125<\/td>\nAnnex A (informative) Example of the coordination of fuses, switch and transformer <\/td>\n<\/tr>\n
126<\/td>\nFigure A.1 \u2013 Characteristics relating to theprotection of an 11 kV, 400 kVA transformer <\/td>\n<\/tr>\n
127<\/td>\nFigure A.2 \u2013 Discrimination between HV and LV fuses <\/td>\n<\/tr>\n
128<\/td>\nAnnex B (normative) Procedures for determining transfer current
B.1 Background
B.2 Mathematical determination of \uf044T <\/td>\n<\/tr>\n
129<\/td>\nFigure B.1 \u2013 Practical determination of the transfer current <\/td>\n<\/tr>\n
131<\/td>\nB.3 Simplified method for determination of transfer current
Figure B.2 \u2013 Determination of the transfer current with the iterative method <\/td>\n<\/tr>\n
133<\/td>\nAnnex C (normative)Tolerances on test quantities for type tests
Table C.1 \u2013 Tolerances on test quantities for type tests <\/td>\n<\/tr>\n
135<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Tracked Changes. High-voltage switchgear and controlgear – Alternating current switch-fuse combinations for rated voltages above 1 kV up to and including 52 kV<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2023<\/td>\n137<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":451743,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[516,2641],"product_tag":[],"class_list":{"0":"post-451734","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-130-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/451734","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\/451743"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=451734"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=451734"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=451734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}