{"id":252132,"date":"2024-10-19T16:38:29","date_gmt":"2024-10-19T16:38:29","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-61439-12011\/"},"modified":"2024-10-25T11:57:09","modified_gmt":"2024-10-25T11:57:09","slug":"bs-en-61439-12011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-61439-12011\/","title":{"rendered":"BS EN 61439-1:2011"},"content":{"rendered":"

IEC 61439-1:2011 lays down the definitions and states the service conditions, construction requirements, technical characteristics and verification requirements for low-voltage switchgear and controlgear assemblies. This standard cannot be used alone to specify an ASSEMBLY or used for a purpose of determining conformity. ASSEMBLIES shall comply with the relevant part of the IEC 61439 series; Parts 2 onwards. This standard applies to low-voltage switchgear and controlgear assemblies (ASSEMBLIES) only when required by the relevant ASSEMBLY standard as follows: – ASSEMBLIES for which the rated voltage does not exceed 1 000 V in case of a.c. or 1 500 V in case of d.c.; – stationary or movable ASSEMBLIES with or without enclosure; – ASSEMBLIES intended for use in connection with the generation, transmission, distribution and conversion of electric energy, and for the control of electric energy consuming equipment; – ASSEMBLIES designed for use under special service conditions, for example in ships and in rail vehicles provided that the other relevant specific requirements are complied with; – ASSEMBLIES designed for electrical equipment of machines provided that the other relevant specific requirements are complied with. This second edition cancels and replaces the first edition published in 2009. It constitutes a technical revision. This second edition includes the following significant technical changes with respect to the last edition of IEC 61439-1: – revision of service conditions in Clause 7; – numerous changes regarding verification methods in Clause 10; – modification of routine verification in respect of clearances and creepage distances (see 11.3); – adaption of the tables in Annex C and Annex D to the revised requirements and verification methods; – revision of the EMC requirements in Annex J; – shifting of tables from Annex H to new Annex N; – new Annex O with guidance on temperature rise verification; – new Annex P with a verification method for short-circuit withstand strength (integration of the content of IEC\/TR 61117); – update of normative references; – general editorial review.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
11<\/td>\nEnglish
\n
CONTENTS
\n <\/td>\n<\/tr>\n
17<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
18<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
21<\/td>\n3 Terms and definitions
3.1 General terms <\/td>\n<\/tr>\n
23<\/td>\n3.2 Constructional units of assemblies <\/td>\n<\/tr>\n
24<\/td>\n3.3 External design of assemblies
3.4 Structural parts of assemblies <\/td>\n<\/tr>\n
26<\/td>\n3.5 Conditions of installation of assemblies
3.6 Insulation characteristics <\/td>\n<\/tr>\n
29<\/td>\n3.7 Protection against electric shock <\/td>\n<\/tr>\n
31<\/td>\n3.8 Characteristics <\/td>\n<\/tr>\n
33<\/td>\n3.9 Verification <\/td>\n<\/tr>\n
34<\/td>\n3.10 Manufacturer\/user
4 Symbols and abbreviations <\/td>\n<\/tr>\n
35<\/td>\n5 Interface characteristics
5.1 General
5.2 Voltage ratings <\/td>\n<\/tr>\n
36<\/td>\n5.3 Current ratings <\/td>\n<\/tr>\n
37<\/td>\n5.4 Rated diversity factor (RDF)
5.5 Rated frequency (fn)
5.6 Other characteristics <\/td>\n<\/tr>\n
38<\/td>\n6 Information
6.1 assembly designation marking
6.2 Documentation <\/td>\n<\/tr>\n
39<\/td>\n6.3 Device and\/or component identification
7 Service conditions
7.1 Normal service conditions <\/td>\n<\/tr>\n
40<\/td>\n7.2 Special service conditions <\/td>\n<\/tr>\n
41<\/td>\n7.3 Conditions during transport, storage and installation
8 Constructional requirements
8.1 Strength of materials and parts <\/td>\n<\/tr>\n
42<\/td>\n8.2 Degree of protection provided by an assembly enclosure <\/td>\n<\/tr>\n
43<\/td>\n8.3 Clearances and creepage distances <\/td>\n<\/tr>\n
45<\/td>\n8.4 Protection against electric shock <\/td>\n<\/tr>\n
51<\/td>\n8.5 Incorporation of switching devices and components <\/td>\n<\/tr>\n
53<\/td>\n8.6 Internal electrical circuits and connections <\/td>\n<\/tr>\n
55<\/td>\n8.7 Cooling
8.8 Terminals for external conductors <\/td>\n<\/tr>\n
57<\/td>\n9 Performance requirements
9.1 Dielectric properties <\/td>\n<\/tr>\n
58<\/td>\n9.2 Temperature rise limits
9.3 Short-circuit protection and short-circuit withstand strength <\/td>\n<\/tr>\n
59<\/td>\n9.4 Electromagnetic compatibility (EMC) <\/td>\n<\/tr>\n
60<\/td>\n10 Design verification
10.1 General <\/td>\n<\/tr>\n
61<\/td>\n10.2 Strength of materials and parts <\/td>\n<\/tr>\n
65<\/td>\n10.3 Degree of protection of assemblies
10.4 Clearances and creepage distances <\/td>\n<\/tr>\n
66<\/td>\n10.5 Protection against electric shock and integrity of protective circuits <\/td>\n<\/tr>\n
67<\/td>\n10.6 Incorporation of switching devices and components
10.7 Internal electrical circuits and connections
10.8 Terminals for external conductors
10.9 Dielectric properties <\/td>\n<\/tr>\n
70<\/td>\n10.10 Verification of temperature rise <\/td>\n<\/tr>\n
80<\/td>\n10.11 Short-circuit withstand strength <\/td>\n<\/tr>\n
86<\/td>\n10.12 Electromagnetic compatibility (EMC)
10.13 Mechanical operation
11 Routine verification
11.1 General <\/td>\n<\/tr>\n
87<\/td>\n11.2 Degree of protection of enclosures
11.3 Clearances and creepage distances
11.4 Protection against electric shock and integrity of protective circuits
11.5 Incorporation of built-in components
11.6 Internal electrical circuits and connections
11.7 Terminals for external conductors <\/td>\n<\/tr>\n
88<\/td>\n11.8 Mechanical operation
11.9 Dielectric properties
11.10 Wiring, operational performance and function
Tables
\n
Table 1 \u2013 Minimum clearances in air a (8.3.2) <\/td>\n<\/tr>\n
89<\/td>\nTable 2 \u2013 Minimum creepage distances (8.3.3)
Table 3 \u2013 Cross-sectional area of a copper protective conductor (8.4.3.2.2) <\/td>\n<\/tr>\n
90<\/td>\nTable 4 \u2013 Conductor selection and installation requirements (8.6.4)
Table 5 \u2013 Minimum terminal capacity for copper protective conductors (PE, PEN) (8.8) <\/td>\n<\/tr>\n
91<\/td>\nTable 6 \u2013 Temperature-rise limits (9.2) <\/td>\n<\/tr>\n
92<\/td>\nTable 7 \u2013 Values for the factor n a (9.3.3)
Table 8 \u2013 Power-frequency withstand voltage for main circuits (10.9.2)
Table 9 \u2013 Power-frequency withstand voltage for auxiliary and control circuits (10.9.2) <\/td>\n<\/tr>\n
93<\/td>\nTable 10 \u2013 Impulse withstand test voltages (10.9.3)
Table 11 \u2013 Copper test conductors for rated currents up to 400\u00a0A inclusive (10.10.2.3.2) <\/td>\n<\/tr>\n
94<\/td>\nTable 12 \u2013 Copper test conductors for rated currents from 400\u00a0A to 4 000\u00a0A (10.10.2.3.2)
Table 13 \u2013 Short-circuit verification by comparison with a reference design:check list (10.5.3.3, 10.11.3 and 10.11.4) <\/td>\n<\/tr>\n
95<\/td>\nTable 14 \u2013 Relationship between prospective fault current and diameter of copper wire <\/td>\n<\/tr>\n
96<\/td>\nAnnex A (normative) Minimum and maximum cross-section of copper conductors suitable
\nfor connection to terminals for external conductors (see 8.8)
Table A.1 \u2013 Cross-section of copper conductors suitable for connection to terminals for external conductors <\/td>\n<\/tr>\n
97<\/td>\nAnnex B (normative) Method of calculating the cross-sectional area of protective conductors
\nwith regard to thermal stresses due to currents of short duration
Table B.1 \u2013 Values of k for insulated protective conductors not incorporated in cables,
\nor bare protective conductors in contact with cable covering <\/td>\n<\/tr>\n
98<\/td>\nAnnex C (informative)
\nUser information template
Table C.1 \u2013 Template <\/td>\n<\/tr>\n
102<\/td>\nAnnex D (informative)
\nDesign verification
Table D.1 \u2013 List of design verifications to be performed <\/td>\n<\/tr>\n
103<\/td>\nAnnex E (informative)
\nRated diversity factor <\/td>\n<\/tr>\n
104<\/td>\nFigures
\n
Figure E.1 \u2013 Typical assembly <\/td>\n<\/tr>\n
105<\/td>\nTable E.1 \u2013 Examples of loading for an assembly with a rated diversity factor of 0,8 <\/td>\n<\/tr>\n
106<\/td>\nFigure E.2 \u2013 Example 1: Table E.1 \u2013 Functional unit loading for an assembly with a rated diversity factor of 0,8 <\/td>\n<\/tr>\n
107<\/td>\nFigure E.3 \u2013 Example 2: Table E.1 \u2013 Functional unit loading for an assembly with a rated diversity factor of 0,8 <\/td>\n<\/tr>\n
108<\/td>\nFigure E.4 \u2013 Example 3: Table E.1 \u2013 Functional unit loading for an assembly with a rated diversity factor of 0,8 <\/td>\n<\/tr>\n
109<\/td>\nFigure E.5 \u2013 Example 4: Table E.1 \u2013 Functional unit loading for an assembly with a rated diversity factor of 0,8 <\/td>\n<\/tr>\n
110<\/td>\nFigure E.6 \u2013 Example of average heating effect calculation
Table E.2 \u2013 Example of loading of a group of circuits (Section B \u2013 Figure E.1) with a rated diversity factor of 0,9
Table E.3 \u2013 Example of loading of a group of circuits (Sub-distribution board \u2013 Figure E.1) with a rated diversity factor of 0,9 <\/td>\n<\/tr>\n
111<\/td>\nFigure E.7 \u2013 Example graph for the relation between the equivalent RDF and the parameters at intermittent duty at t1 = 0,5\u00a0s, I1 = 7*I2 at different cycle times
Figure E.8 \u2013 Example graph for the relation between the equivalent RDF and the parameters at intermittent duty at I1 = I2 (no starting overcurrent) <\/td>\n<\/tr>\n
112<\/td>\nAnnex F (normative)
\nMeasurement of clearances and creepage distances
Table F.1 \u2013 Minimum width of grooves <\/td>\n<\/tr>\n
116<\/td>\nFigure F.1 \u2013 Measurement of ribs <\/td>\n<\/tr>\n
117<\/td>\nAnnex G (normative) Correlation between the nominal voltage of the supply system
\nand the rated impulse withstand voltage of the equipment <\/td>\n<\/tr>\n
118<\/td>\nTable G.1 \u2013 Correspondence between the nominal voltage of the supply system and the equipment rated impulse withstand voltage <\/td>\n<\/tr>\n
119<\/td>\nAnnex H (informative)
\nOperating current and power loss of copper conductors
Table H.1 \u2013 Operating current and power loss of single-core copper cables with a permissible conductor temperature of 70\u00a0\u00b0C (ambient temperature inside the assembly: 55\u00a0\u00b0C) <\/td>\n<\/tr>\n
120<\/td>\nTable H.2 \u2013 Reduction factor k1 for cables with a permissible conductor temperature of 70\u00a0\u00b0C (extract from IEC\u00a060364-5-52:2009, Table B.52.14) <\/td>\n<\/tr>\n
121<\/td>\nAnnex\u00a0I (Void) <\/td>\n<\/tr>\n
122<\/td>\nAnnex J (normative)
\nElectromagnetic compatibility (EMC)
Figure J.1 \u2013 Examples of ports <\/td>\n<\/tr>\n
126<\/td>\nTable J.1 \u2013 Tests for EMC immunity for environment A(see J.10.12.1) <\/td>\n<\/tr>\n
127<\/td>\nTable J.2 \u2013 Tests for EMC immunity for environment B(see J.10.12.1) <\/td>\n<\/tr>\n
128<\/td>\nTable J.3 \u2013 Acceptance criteria when electromagnetic disturbances are present <\/td>\n<\/tr>\n
129<\/td>\nAnnex K (normative)
\nProtection by electrical separation <\/td>\n<\/tr>\n
131<\/td>\nTable K.1 \u2013 Maximum disconnecting times for TN systems <\/td>\n<\/tr>\n
132<\/td>\nAnnex L (informative)
\nClearances and creepage distances for North American region
Table L.1 \u2013 Minimum clearances in air
Table L.2 \u2013 Minimum creepage distances <\/td>\n<\/tr>\n
133<\/td>\nAnnex M (informative)
\nNorth American temperature rise limits
Table M.1 \u2013 North American temperature rise limits <\/td>\n<\/tr>\n
134<\/td>\nAnnex N (normative)
\nOperating current and power loss of bare copper bars
Table N.1 \u2013 Operating current and power loss of bare copper bars with rectangular cross-section, run horizontally and arranged with their largest face vertical, frequency 50\u00a0Hz to 60\u00a0Hz (ambient temperature inside the assembly: 55\u00a0\u00b0C, temperature of the conductor 70\u00a0\u00b0C) <\/td>\n<\/tr>\n
135<\/td>\nTable N.2 \u2013 Factor k4 for different temperatures of the air inside the assembly and\/or for the conductors <\/td>\n<\/tr>\n
136<\/td>\nAnnex O (informative)
\nGuidance on temperature rise verification <\/td>\n<\/tr>\n
140<\/td>\nFigure O.1 \u2013 Temperature rise verification methods <\/td>\n<\/tr>\n
141<\/td>\nAnnex P (normative) Verification of the short-circuit withstand strength of busbar structures
\nby comparison with a tested reference design by calculation
Figure P.1 \u2013 Tested busbar structure (TS) <\/td>\n<\/tr>\n
142<\/td>\nFigure P.2 \u2013 Non tested busbar structure (NTS) <\/td>\n<\/tr>\n
144<\/td>\nFigure P.3 \u2013 Angular busbar configuration with supports at the corners <\/td>\n<\/tr>\n
145<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Low-voltage switchgear and controlgear assemblies – General rules<\/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>\n148<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":252136,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[517,2641],"product_tag":[],"class_list":{"0":"post-252132","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-130-20","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\/252132","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\/252136"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=252132"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=252132"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=252132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}