{"id":402976,"date":"2024-10-20T05:03:57","date_gmt":"2024-10-20T05:03:57","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-60947-32021-2\/"},"modified":"2024-10-26T09:01:08","modified_gmt":"2024-10-26T09:01:08","slug":"bs-en-iec-60947-32021-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-60947-32021-2\/","title":{"rendered":"BS EN IEC 60947-3:2021"},"content":{"rendered":"

This part of IEC 60947 applies to switches, disconnectors, switch-disconnectors and fuse-combination units and their dedicated accessories to be used in distribution circuits and motor circuits of which the rated voltage does not exceed 1 000 V AC or 1 500 V DC.<\/p>\n

\n

NOTE 1 Accessories are interconnecting units, extended terminals, internal coils, auxiliary contacts, motor operator, etc. offered as options with the basic unit.<\/p>\n<\/blockquote>\n

This document does not apply to equipment coming within the scope of IEC 60947-2, IEC 60947-4- 1 and IEC 60947-5-1.<\/p>\n

Particular requirements for switches, disconnectors, switch-disconnectors and fuse-combination units for use in photovoltaic (PV) DC applications are given in Annex D.<\/p>\n

Specific requirements for LV switchgear intended for the connections of aluminium conductors are given in Annex E.<\/p>\n

Guidance on measurement of power loss is provided in Annex F.<\/p>\n

This document does not include the additional requirements necessary for electrical apparatus for explosive gas atmospheres.<\/p>\n

\n

NOTE 2 Depending on its design, a switch (or disconnector) can be referred to as “a rotary switch (disconnector)”, “cam-operated switch (disconnector)”, “knife-switch (disconnector)”, etc.<\/p>\n

NOTE 3 In this document, the word “switch” also applies to the apparatus referred to in French as “commutateurs”, intended to modify the connections between several circuits and inter alia to substitute a part of a circuit for another.<\/p>\n

NOTE 4 In general, throughout this document, switches, disconnectors, switch-disconnectors and fuse-combination units will be referred to as “equipment”.<\/p>\n<\/blockquote>\n

The object of this document is to state:<\/p>\n

    \n
  1. \n

    the characteristics of the equipment;<\/p>\n<\/li>\n

  2. \n

    the conditions that apply to the equipment with reference to:<\/p>\n

      \n
    1. \n

      operation and behaviour in normal service;<\/p>\n<\/li>\n

    2. \n

      operation and behaviour in case of specified abnormal conditions, e.g. short-circuit;<\/p>\n<\/li>\n

    3. \n

      dielectric properties;<\/p>\n<\/li>\n<\/ol>\n<\/li>\n

    4. \n

      the tests for confirming that these conditions have been met and the methods that are adopted for these tests;<\/p>\n<\/li>\n

    5. \n

      the information relevant to the marking of the equipment or made available by the manufacturer, e.g. in the catalogue.<\/p>\n<\/li>\n

    6. \n

      Specific items requiring agreement between the user and the manufacturer are identified in Annex B.<\/p>\n<\/li>\n<\/ol>\n

      Specific items requiring agreement between the user and the manufacturer are identified in Annex B.<\/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\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
      2<\/td>\nundefined <\/td>\n<\/tr>\n
      7<\/td>\nAnnex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
      13<\/td>\nEnglish
      CONTENTS <\/td>\n<\/tr>\n
      18<\/td>\nFOREWORD <\/td>\n<\/tr>\n
      20<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
      21<\/td>\n1 Scope <\/td>\n<\/tr>\n
      22<\/td>\n2 Normative references <\/td>\n<\/tr>\n
      23<\/td>\n3 Terms, definitions and index of terms
      3.1 General
      3.2 Alphabetical index of terms <\/td>\n<\/tr>\n
      24<\/td>\n3.3 General terms <\/td>\n<\/tr>\n
      26<\/td>\n4 Classification
      4.1 According to the utilization category
      4.2 According to the method of operation
      4.2.1 Manually operated equipment
      4.2.2 Remotely operated equipment <\/td>\n<\/tr>\n
      27<\/td>\n4.3 According to suitability for isolation
      4.4 According to the degree of protection provided
      4.5 Summary of symbols for equipment types
      5 Characteristics
      5.1 Summary of characteristics
      Tables
      Table 1 \u2013 Summary of equipment definitions <\/td>\n<\/tr>\n
      28<\/td>\n5.2 Type of equipment
      5.3 Rated and limiting values for the main circuit
      5.3.1 General
      5.3.2 Rated voltages
      5.3.3 Currents
      5.3.4 Rated frequency <\/td>\n<\/tr>\n
      29<\/td>\n5.3.5 Rated duty
      5.3.6 Normal load and overload characteristics
      5.3.7 Short-circuit characteristics <\/td>\n<\/tr>\n
      30<\/td>\n5.4 Utilization category
      Table 2 \u2013 Utilization categories <\/td>\n<\/tr>\n
      31<\/td>\n5.5 Control circuits
      5.6 Auxiliary circuits
      5.7 Relays and releases
      5.8 Co-ordination with short-circuit protective devices (SCPD)
      6 Product information
      6.1 Nature of information
      6.2 Marking <\/td>\n<\/tr>\n
      32<\/td>\nTable 3 \u2013 Product information <\/td>\n<\/tr>\n
      33<\/td>\n6.3 Instructions for installation, operation and maintenance, decommissioning and dismantling
      7 Normal service, mounting and transport conditions
      8 Constructional and performance requirements
      8.1 Constructional requirements
      8.1.1 General <\/td>\n<\/tr>\n
      34<\/td>\n8.2 Performance requirements
      8.2.1 Operating conditions <\/td>\n<\/tr>\n
      35<\/td>\n8.2.2 Temperature-rise
      8.2.3 Dielectric properties
      8.2.4 Ability to make and break under no-load, normal load and overload conditions <\/td>\n<\/tr>\n
      36<\/td>\nTable 4 \u2013 Verification of rated making and breaking capacities (see 9.3.4.4) \u2013 Conditions for making and breaking corresponding to the various utilization categories <\/td>\n<\/tr>\n
      37<\/td>\nTable 5 \u2013 Verification of operational performance \u2013Number of operating cycles corresponding to the rated operational current
      Table 6 \u2013 Test circuit parameters for Table 5 <\/td>\n<\/tr>\n
      38<\/td>\n8.2.5 Ability to make, break or withstand short-circuit currents
      8.2.6 Void
      8.2.7 Additional performance requirements for equipment suitable for isolation
      8.2.8 Critical load current performance: DC equipment
      8.2.9 Overload requirements for equipment incorporating fuses
      8.3 Electromagnetic compatibility (EMC)
      8.3.1 General
      8.3.2 Immunity <\/td>\n<\/tr>\n
      39<\/td>\n8.3.3 Emission
      Table 7 \u2013 Immunity tests a
      Table 8 \u2013 Emission limits <\/td>\n<\/tr>\n
      40<\/td>\n9 Tests
      9.1 Kinds of test
      9.1.1 General
      9.1.2 Type tests
      9.1.3 Routine tests <\/td>\n<\/tr>\n
      41<\/td>\n9.1.4 Sampling tests
      9.1.5 Special tests
      9.2 Compliance with constructional requirements
      9.2.1 General <\/td>\n<\/tr>\n
      42<\/td>\n9.3 Performance
      9.3.1 General
      9.3.2 Test sequences
      Table 9 \u2013 List of type tests applicable to a given equipment <\/td>\n<\/tr>\n
      43<\/td>\n9.3.3 General test conditions
      Table 10 \u2013 Overall scheme of test sequences <\/td>\n<\/tr>\n
      46<\/td>\n9.3.4 Test sequence I: general performance characteristics <\/td>\n<\/tr>\n
      47<\/td>\nTable 11 \u2013 Test sequence I: general performance characteristics <\/td>\n<\/tr>\n
      50<\/td>\n9.3.5 Test sequence II: operational performance capability
      Table 12 \u2013 Temperature-rise limits for terminals and accessible parts <\/td>\n<\/tr>\n
      51<\/td>\nTable 13 \u2013 Test sequence II: operational performance capability <\/td>\n<\/tr>\n
      52<\/td>\n9.3.6 Test sequence III: short-circuit performance capability <\/td>\n<\/tr>\n
      53<\/td>\nTable 14 \u2013 Test sequence III: short-circuit performance capability <\/td>\n<\/tr>\n
      56<\/td>\n9.3.7 Test sequence IV: conditional short-circuit current <\/td>\n<\/tr>\n
      57<\/td>\nTable 15 \u2013 Test sequence IV: conditional short-circuit current \u2013circuit-breaker protected <\/td>\n<\/tr>\n
      58<\/td>\nTable 16 \u2013 Test sequence IV: conditional short-circuit current \u2013 fuse protected <\/td>\n<\/tr>\n
      59<\/td>\n9.3.8 Test sequence V: overload performance capability <\/td>\n<\/tr>\n
      60<\/td>\n9.3.9 Test sequence VI: critical load current performance of equipment with a DC rating
      Table 17 \u2013 Test sequence V: overload performance capability <\/td>\n<\/tr>\n
      62<\/td>\n9.4 Electromagnetic compatibility tests
      9.4.1 General
      Table 18 \u2013 Number of operating cycles corresponding to the critical load current
      Table 19 \u2013 Test circuit parameters for Table 18
      Table 20 \u2013 Test sequence VI: critical load current performanceof equipment with a DC rating <\/td>\n<\/tr>\n
      63<\/td>\n9.4.2 Immunity
      9.4.3 Emission
      9.5 Special tests
      9.5.1 Mechanical and electrical durability
      9.5.2 Mechanical durability
      9.5.3 Electrical durability <\/td>\n<\/tr>\n
      64<\/td>\n9.5.4 Damp heat, salt mist, vibration and shock <\/td>\n<\/tr>\n
      65<\/td>\nAnnexes
      Annex A (normative) Equipment for direct switching of a single motor
      A.1 General
      A.2 Rated
      A.2.1 Intermittent periodic duty or intermittent duty
      A.2.2 Temporary duty
      A.3 Making and breaking capacities
      A.4 Utilization category <\/td>\n<\/tr>\n
      66<\/td>\nTable A.1 \u2013 Utilization categories <\/td>\n<\/tr>\n
      67<\/td>\nTable A.2 \u2013 Rated making and breaking capacity conditionscorresponding to several utilization categories <\/td>\n<\/tr>\n
      68<\/td>\nA.5 Operational performance
      Table A.3 \u2013 Relationship between current broken Ic and off-time for the verification of the rated making and breaking capacities
      Table A.4 \u2013 Operational performance \u2013Conditions for making and breaking corresponding to several utilization categories <\/td>\n<\/tr>\n
      69<\/td>\nA.6 Mechanical durability
      A.7 Electrical durability
      A.8 Verification of making and breaking capacities
      A.9 Operational performance test
      A.10 Special tests
      A.10.1 General <\/td>\n<\/tr>\n
      70<\/td>\nA.10.2 Mechanical durability test
      A.10.3 Electrical durability test <\/td>\n<\/tr>\n
      71<\/td>\nA.11 Critical load current performance for DC equipment
      Table A.5 \u2013 Verification of the number of on-load operating cycles \u2013Conditions for making and breaking corresponding to several utilization categories <\/td>\n<\/tr>\n
      72<\/td>\nAnnex B (informative) Items subject to agreement between manufacturer and user <\/td>\n<\/tr>\n
      73<\/td>\nAnnex C (normative) Single pole operated three-pole switches
      C.1 General
      Figure C.1 \u2013 Typical arrangements <\/td>\n<\/tr>\n
      74<\/td>\nC.2 Tests
      C.3 Test set-up and sequence
      C.3.1 Making and breaking capacities (9.3.4.3) and operational performance (9.3.5.2)
      C.3.2 Fuse protected short-circuit test (9.3.7.3)
      C.4 Condition of equipment after tests
      C.5 Instructions for use <\/td>\n<\/tr>\n
      75<\/td>\nAnnex D (normative) Switches, disconnectors, switch-disconnectors and fuse-combination units for use in photovoltaic (PV) DC applications
      D.1 General
      D.1.1 Background
      D.1.2 Object
      D.2 Normative references
      D.3 Terms and definitions <\/td>\n<\/tr>\n
      76<\/td>\nD.4 Classification
      D.4.1 According to the utilization category
      D.5 Characteristics
      Table D.1 \u2013 Utilization categories <\/td>\n<\/tr>\n
      77<\/td>\nD.6 Product information
      D.7 Normal service, mounting and transport conditions
      D.8 Constructional and performance requirements
      Table D.2 \u2013 Service arrangements
      Table D.3 \u2013 Environmental conditions <\/td>\n<\/tr>\n
      78<\/td>\nTable D.4 \u2013 Rated impulse withstand levels for PV switches, PV disconnectors, PV switch-disconnectors or PV fuse-combination units <\/td>\n<\/tr>\n
      79<\/td>\nTable D.5 \u2013 Verification of rated making and breaking capacities (see 9.3.4.4) \u2013 Conditions for making and breaking corresponding to the DC-PV category <\/td>\n<\/tr>\n
      80<\/td>\nTable D.6 \u2013 Number of operating cycles
      Table D.7 \u2013 Test circuit parameters for Table D.6 <\/td>\n<\/tr>\n
      81<\/td>\nD.9 Tests <\/td>\n<\/tr>\n
      82<\/td>\nTable D.8 \u2013 Overall scheme of test sequences <\/td>\n<\/tr>\n
      84<\/td>\nTable D.9 \u2013 Number of operating cycles corresponding to the critical load current
      Table D.10 \u2013 Test circuit parameters for Table D.9 <\/td>\n<\/tr>\n
      87<\/td>\nAnnex E (normative) Additional requirements for LV switchgear intended for connection of aluminium conductors
      E.1 Object
      E.2 Normative references
      E.3 Terms, definitions and index of terms <\/td>\n<\/tr>\n
      88<\/td>\nE.4 Classification
      E.5 Characteristics
      E.6 Product information
      E.6.1 Nature of information
      E.6.2 Marking
      E.6.3 Instructions for installation, operation and maintenance, decommissioning and dismantling <\/td>\n<\/tr>\n
      89<\/td>\nE.7 Normal service, mounting and transport conditions
      E.8 Constructional and performance requirements
      E.9 Tests
      E.9.1 General
      Table E.1 \u2013 List of tests for terminal connections a with aluminium cables <\/td>\n<\/tr>\n
      90<\/td>\nE.9.2 Current cycling test <\/td>\n<\/tr>\n
      91<\/td>\nFigures
      Figure E.1 \u2013 General test arrangement
      Figure E.2 \u2013 Mounting of terminals for the current cycling test <\/td>\n<\/tr>\n
      92<\/td>\nTable E.2 \u2013 Conductor length for current cycling test as per conductor cross-section
      Table E.3 \u2013 Equalizer dimensions <\/td>\n<\/tr>\n
      94<\/td>\nTable E.4 \u2013 Starting test current for the current cycling test <\/td>\n<\/tr>\n
      95<\/td>\nE.9.3 Mechanical properties of terminals
      Table E.5 \u2013 Example of stability factor calculation <\/td>\n<\/tr>\n
      96<\/td>\nE.9.4 Test for insertability of unprepared round aluminium conductors having the maximum cross-section
      Table E.6 \u2013 Test values for flexion and pull-out test for cables <\/td>\n<\/tr>\n
      97<\/td>\nTable E.7 \u2013 Test aluminium cable for test currents up to 800 A a, d <\/td>\n<\/tr>\n
      98<\/td>\nTable E.8 \u2013 Test aluminium bars for test currents above 150 A and up to 3 150 A a, f <\/td>\n<\/tr>\n
      99<\/td>\nAnnex F (informative) Power loss
      F.1 General
      F.2 Test methods
      F.2.1 General
      F.2.2 General case for AC switches and\/or disconnectors
      F.2.3 General case for AC fused combination units and fuse disconnectors <\/td>\n<\/tr>\n
      100<\/td>\nF.2.4 Switches and\/or disconnectors of rated current not exceeding 400 A
      F.2.5 Fused combination units and fuse disconnectors of rated current not exceeding 400 A <\/td>\n<\/tr>\n
      101<\/td>\nF.3 Test procedure
      Figure F.1 \u2013 Example of power loss measurement according to F.2.2 <\/td>\n<\/tr>\n
      102<\/td>\nFigure F.2 \u2013 Example of power loss measurement according to F.2.3
      Figure F.3 \u2013 Example of power loss measurement according to F.2.4 <\/td>\n<\/tr>\n
      103<\/td>\nFigure F.4 \u2013 Example of power loss measurement according to F.2.5 <\/td>\n<\/tr>\n
      104<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

      Low-voltage switchgear and controlgear – Switches, disconnectors, switch-disconnectors and fuse-combination units<\/b><\/p>\n\n\n\n\n
      Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
      BSI<\/b><\/a><\/td>\n2022<\/td>\n102<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":402985,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[510,2641],"product_tag":[],"class_list":{"0":"post-402976","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-120-40","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\/402976","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\/402985"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=402976"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=402976"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=402976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}