{"id":423401,"date":"2024-10-20T06:46:18","date_gmt":"2024-10-20T06:46:18","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-60664-12020-3\/"},"modified":"2024-10-26T12:42:23","modified_gmt":"2024-10-26T12:42:23","slug":"bs-en-iec-60664-12020-3","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-60664-12020-3\/","title":{"rendered":"BS EN IEC 60664-1:2020"},"content":{"rendered":"

This part of IEC 60664 deals with insulation coordination<\/b> for equipment having a rated voltage<\/b> up to AC 1 000 V or DC 1 500 V connected to low-voltage supply systems.<\/b><\/p>\n

This document applies to frequencies up to 30 kHz.<\/p>\n

\n

NOTE 1 Requirements for insulation coordination<\/b> for equipment within low-voltage supply systems<\/b> with rated frequencies above 30 kHz are given in IEC 60664-4.<\/p>\n<\/blockquote>\n

\n

NOTE 2 Higher voltages can exist in internal circuits of the equipment.<\/p>\n<\/blockquote>\n

It applies to equipment for use up to 2 000 m above sea level and provides guidance for use at higher altitudes (See 5.2.3.4).<\/p>\n

It provides requirements for technical committees to determine clearances<\/b>, creepage distances<\/b> and criteria for solid insulation<\/b>. It includes methods of electrical testing with respect to insulation coordination.<\/b><\/p>\n

The minimum clearances<\/b> specified in this document do not apply where ionized gases are present. Special requirements for such situations can be specified at the discretion of the relevant technical committee.<\/p>\n

This document does not deal with distances:<\/p>\n

    \n
  • \n

    through liquid insulation;<\/p>\n<\/li>\n

  • \n

    through gases other than air;<\/p>\n<\/li>\n

  • \n

    through compressed air.<\/p>\n<\/li>\n<\/ul>\n

    This basic safety publication focusing on safety essential requirements is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO\/IEC Guide 51.<\/p>\n

    One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications.<\/p>\n

    However, in case of missing specified values for clearances, creepage distances<\/b> and requirements for solid insulation<\/b> in the relevant product standards, or even missing standards, this document applies.<\/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
    PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
    2<\/td>\nundefined <\/td>\n<\/tr>\n
    5<\/td>\nAnnex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
    7<\/td>\nEnglish
    CONTENTS <\/td>\n<\/tr>\n
    11<\/td>\nFOREWORD <\/td>\n<\/tr>\n
    13<\/td>\n1 Scope
    2 Normative references <\/td>\n<\/tr>\n
    14<\/td>\n3 Terms, definitions and abbreviated terms
    3.1 Terms and definitions <\/td>\n<\/tr>\n
    20<\/td>\n3.2 Abbreviated terms
    4 Basic technical characteristics for insulation coordination
    4.1 General <\/td>\n<\/tr>\n
    21<\/td>\n4.2 Voltages
    4.2.1 General aspects <\/td>\n<\/tr>\n
    22<\/td>\n4.2.2 Transient overvoltages <\/td>\n<\/tr>\n
    23<\/td>\n4.2.3 Temporary overvoltages
    4.2.4 Recurring peak voltage <\/td>\n<\/tr>\n
    24<\/td>\n4.2.5 Steady-state working voltage
    4.2.6 Steady-state peak voltage
    4.3 Overvoltage categories
    4.3.1 General
    4.3.2 Equipment energized directly from the mains supply
    Figures
    Figure 1 \u2013 Recurring peak voltage <\/td>\n<\/tr>\n
    25<\/td>\n4.3.3 Systems and equipment not energized directly from the mains supply
    4.4 Frequency
    4.4.1 General
    4.4.2 Solid insulation
    4.5 Pollution
    4.5.1 General <\/td>\n<\/tr>\n
    26<\/td>\n4.5.2 Degrees of pollution in the micro-environment
    4.5.3 Conditions of conductive pollution
    4.6 Insulating material
    4.6.1 Solid insulation <\/td>\n<\/tr>\n
    27<\/td>\n4.6.2 Stresses <\/td>\n<\/tr>\n
    28<\/td>\n4.6.3 Comparative tracking index (CTI) <\/td>\n<\/tr>\n
    29<\/td>\n4.7 Environmental aspects
    4.7.1 General
    4.7.2 Altitude
    4.7.3 Temperature
    4.7.4 Vibrations
    4.7.5 Humidity
    4.8 Duration of voltage stress <\/td>\n<\/tr>\n
    30<\/td>\n4.9 Electrical field distribution
    5 Design for insulation coordination
    5.1 General
    5.1.1 Means of insulation coordination
    5.1.2 Frequency above 30 kHz
    5.1.3 Reduced distances due to coating or potting
    5.1.4 Equipment which are not connected to public low-voltage systems.
    5.2 Dimensioning of clearances
    5.2.1 General <\/td>\n<\/tr>\n
    31<\/td>\n5.2.2 Dimensioning criteria for clearances
    5.2.3 Other factors involving clearances <\/td>\n<\/tr>\n
    32<\/td>\n5.2.4 Dimensioning of clearances of functional insulation
    5.2.5 Dimensioning of clearances of basic insulation, supplementary insulation and reinforced insulation <\/td>\n<\/tr>\n
    33<\/td>\n5.3 Dimensioning of creepage distances
    5.3.1 General <\/td>\n<\/tr>\n
    34<\/td>\n5.3.2 Dimensioning criteria of creepage distances <\/td>\n<\/tr>\n
    35<\/td>\n5.3.3 Other factors involving creepage distances <\/td>\n<\/tr>\n
    36<\/td>\n5.3.4 Dimensioning of creepage distances of functional insulation
    5.3.5 Dimensioning of creepage distances of basic insulation, supplementary insulation and reinforced insulation
    Figure 2 \u2013 Determination of the width (W) and height (H) of a rib <\/td>\n<\/tr>\n
    37<\/td>\n5.4 Requirements for design of solid insulation
    5.4.1 General
    5.4.2 Voltage stress
    5.4.3 Withstand of voltage stresses <\/td>\n<\/tr>\n
    39<\/td>\n5.4.4 Withstand on environmental stresses
    6 Tests and measurements
    6.1 General <\/td>\n<\/tr>\n
    40<\/td>\n6.2 Verification of clearances
    6.2.1 General
    6.2.2 Test voltages <\/td>\n<\/tr>\n
    42<\/td>\n6.3 Verification of creepage distances
    6.4 Verification of solid insulation
    6.4.1 General <\/td>\n<\/tr>\n
    43<\/td>\n6.4.2 Selection of tests <\/td>\n<\/tr>\n
    44<\/td>\n6.4.3 Conditioning
    6.4.4 Impulse voltage test <\/td>\n<\/tr>\n
    45<\/td>\n6.4.5 AC power frequency voltage test
    6.4.6 Partial discharge test <\/td>\n<\/tr>\n
    47<\/td>\n6.4.7 DC voltage test
    Figure 3 \u2013 Test voltages <\/td>\n<\/tr>\n
    48<\/td>\n6.4.8 High-frequency voltage test
    6.5 Performing dielectric tests on complete equipment
    6.5.1 General
    6.5.2 Parts to be tested <\/td>\n<\/tr>\n
    49<\/td>\n6.5.3 Preparation of equipment circuits
    6.5.4 Test voltage values
    6.5.5 Test criteria
    6.6 Other tests
    6.6.1 Test for purposes other than insulation coordination
    6.6.2 Sampling and routine tests
    6.6.3 Measurement accuracy of test parameters <\/td>\n<\/tr>\n
    50<\/td>\n6.7 Measurement of the attenuation of the transient overvoltages
    6.8 Measurement of clearances and creepage distances <\/td>\n<\/tr>\n
    51<\/td>\nFigure 4 \u2013 Across the groove
    Tables
    Table 1 \u2013 Dimensioning of grooves <\/td>\n<\/tr>\n
    52<\/td>\nFigure 5 \u2013 Contour of the groove
    Figure 6 \u2013 Contour of the groove with angle
    Figure 7 \u2013 Contour of rib <\/td>\n<\/tr>\n
    53<\/td>\nFigure 8 \u2013 Uncemented joint with grooves less than X
    Figure 9 \u2013 Uncemented joint with grooves equal to or more than X <\/td>\n<\/tr>\n
    54<\/td>\nFigure 10 \u2013 Uncemented joint with a groove on one side less than X
    Figure 11 \u2013 Creepage distance and clearance through an uncemented joint
    Figure 12 \u2013 Creepage distance and clearance to a head of screw more than X <\/td>\n<\/tr>\n
    55<\/td>\nFigure 13 \u2013 Creepage distance and clearance to a head of screw less than X
    Figure 14 \u2013 Creepage distance and clearance with conductive floating part <\/td>\n<\/tr>\n
    56<\/td>\nAnnexes
    Annex A (informative) Basic data on withstand characteristics of clearances
    Table A.1 \u2013 Withstand voltages for an altitude of 2 000 m above sea level (1 of 2) <\/td>\n<\/tr>\n
    57<\/td>\nTable A.2 \u2013 Altitude correction factors for clearance correction <\/td>\n<\/tr>\n
    58<\/td>\nFigure A.1 \u2013 Withstand voltage at 2 000 m above sea level <\/td>\n<\/tr>\n
    59<\/td>\nFigure A.2 \u2013 Experimental data measured at approximately sea level and their low limits for inhomogeneous field <\/td>\n<\/tr>\n
    60<\/td>\nFigure A.3 \u2013 Experimental data measured at approximately sea level and their low limits for homogeneous field <\/td>\n<\/tr>\n
    61<\/td>\nAnnex B (informative) Nominal voltages of mains supply for different modes of overvoltage control
    Table B.1 \u2013 Inherent control or equivalent protective control <\/td>\n<\/tr>\n
    62<\/td>\nTable B.2 \u2013 Cases where protective control is necessary and control is provided by surge protective device having a ratio of voltage protection level to rated voltagenot smaller than that specified in IEC 61643 (all parts) <\/td>\n<\/tr>\n
    63<\/td>\nAnnex C (normative) Partial discharge test methods
    C.1 Test circuits
    C.1.1 General
    C.1.2 Test circuit for earthed test specimen (Figure C.1)
    Figure C.1 \u2013 Earthed test specimen <\/td>\n<\/tr>\n
    64<\/td>\nC.1.3 Test circuit for unearthed test specimen (Figure C.2)
    C.1.4 Selection criteria
    C.1.5 Measuring impedance
    C.1.6 Coupling capacitor Ck
    C.1.7 Filter
    C.2 Test parameters
    C.2.1 General
    Figure C.2 \u2013 Unearthed test specimen <\/td>\n<\/tr>\n
    65<\/td>\nC.2.2 Requirements for the test voltage
    C.2.3 Climatic conditions
    C.3 Requirements for measuring instruments
    C.3.1 General
    C.3.2 Classification of PD meters <\/td>\n<\/tr>\n
    66<\/td>\nC.3.3 Bandwidth of the test circuit
    C.4 Calibration
    C.4.1 Calibration of discharge magnitude before the noise level measurement <\/td>\n<\/tr>\n
    67<\/td>\nC.4.2 Verification of the noise level
    Figure C.3 \u2013 Calibration for earthed test specimen
    Figure C.4 \u2013 Calibration for unearthed test specimen <\/td>\n<\/tr>\n
    68<\/td>\nC.4.3 Calibration for the PD test
    C.4.4 Calibration pulse generator <\/td>\n<\/tr>\n
    69<\/td>\nAnnex D (informative) Additional information on partial discharge test methods
    D.1 Measurement of partial discharge (PD), PD inception and extinction voltage
    D.2 Description of PD test circuits (Figure D.1)
    Figure D.1 \u2013 Partial discharge test circuits <\/td>\n<\/tr>\n
    70<\/td>\nD.3 Precautions for reduction of noise
    D.3.1 General
    D.3.2 Sources in the non-energized test circuit
    D.3.3 Sources in the energized test circuit
    D.3.4 Measures for reduction of noise
    D.4 Application of multiplying factors for test voltages
    D.4.1 General <\/td>\n<\/tr>\n
    71<\/td>\nD.4.2 Example 1 (circuit connected to mains supply)
    D.4.3 Example 2 (internal circuit with maximum recurring peak voltage Urp) <\/td>\n<\/tr>\n
    72<\/td>\nAnnex E (informative) Comparison of creepage distances specified in Table F.5 and clearances in Table A.1
    Figure E.1 \u2013 Comparison between creepage distances specifiedin Table F.5 and clearances in Table A.1 <\/td>\n<\/tr>\n
    73<\/td>\nAnnex F (normative) Tables
    Table F.1 \u2013 Rated impulse withstand voltage for equipment energized directly from the mains supply <\/td>\n<\/tr>\n
    74<\/td>\nTable F.2 \u2013 Clearances to withstand transient overvoltages <\/td>\n<\/tr>\n
    75<\/td>\nTable F.3 \u2013 Single-phase three-wire or two-wire AC or DC systems <\/td>\n<\/tr>\n
    76<\/td>\nTable F.4 \u2013 Three-phase four-wire or three-wire AC systems <\/td>\n<\/tr>\n
    77<\/td>\nTable F.5 \u2013 Creepage distances to avoid failure due to tracking (1 of 2) <\/td>\n<\/tr>\n
    79<\/td>\nTable F.6 \u2013 Test voltages for verifying clearances only at different altitudes
    Table F.7 \u2013 Severities for conditioning of solid insulation <\/td>\n<\/tr>\n
    80<\/td>\nTable F.8 \u2013 Dimensioning of clearances to withstand steady-state peak voltages, temporary overvoltages or recurring peak voltages b
    Table F.9 \u2013 Additional information concerning the dimensioning of clearances to avoid partial discharge <\/td>\n<\/tr>\n
    81<\/td>\nTable F.10 \u2013 Altitude correction factors for clearance correction <\/td>\n<\/tr>\n
    82<\/td>\nAnnex G (informative) Determination of clearance distances according to 5.2
    Figure G.1 \u2013 Determination of clearance distances according to 5.2 (1 of 2) <\/td>\n<\/tr>\n
    84<\/td>\nAnnex H (informative) Determination of creepage distances according to 5.3
    Figure H.1 \u2013 Determination of creepage distances according to 5.3 (1 of 2) <\/td>\n<\/tr>\n
    86<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Insulation coordination for equipment within low-voltage supply systems – Principles, requirements and tests<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2020<\/td>\n88<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":423411,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[498,2641],"product_tag":[],"class_list":{"0":"post-423401","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-080-30","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\/423401","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\/423411"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=423401"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=423401"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=423401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}