This document applies to residual current monitors for household and similar purposes, having rated operational voltages and a rated voltage of the monitored circuit not exceeding 440 V AC and rated currents not exceeding 125 A.<\/p>\n
\nNOTE 1 The standard for residual current monitors having rated operational voltages and a rated voltage of the monitored circuit exceeding 440 V AC is in preparation, as IEC 62020-2.<\/p>\n<\/blockquote>\n
RCMs are intended to monitor the residual current of the installation and to give a warning if the residual current between a live part and an exposed conductive part or earth exceeds a predetermined level.<\/p>\n
RCMs covered by this document are not intended to be used as protective devices.<\/p>\n
RCMs detect residual currents circulating in an AC circuit (e.g. residual alternating current, residual pulsating direct current, residual smooth direct current), whether suddenly applied or slowly rising.<\/p>\n
\nNOTE 2 RCMs for DC systems are under consideration.<\/p>\n<\/blockquote>\n
This document applies to monitors performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating current of the device and providing the specified warning signal(s) when the residual current exceeds this value.<\/p>\n
RCMs supplied by internal batteries are not covered by this document.<\/p>\n
The requirements of this document apply for standard conditions (see 7.1). Additional requirements can be necessary for RCMs used in locations having severe environmental conditions.<\/p>\n
RCMs are intended for use in an environment with pollution degree 2 and overvoltage category III. For an environment with a higher pollution degree, enclosures giving the appropriate degree of protection are used.<\/p>\n
RCMs in compliance with this document are suitable for use in TN, TT, and IT systems.<\/p>\n
This document does not cover Insulation Monitoring Devices (IMDs), which are covered by the scope of IEC 61557-8.<\/p>\n
\nkNOTE 3 An RCM is distinguished from an IMD in that it is passive in its monitoring function and only responds to an unbalanced fault current in the installation being monitored. An IMD is active in its monitoring and measuring functions in that it can measure the balanced and unbalanced insulation resistance or impedance in the installation (see IEC 61557-8).<\/p>\n<\/blockquote>\n
PDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n undefined <\/td>\n<\/tr>\n \n 7<\/td>\n Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n \n 13<\/td>\n English
CONTENTS <\/td>\n<\/tr>\n\n 19<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 21<\/td>\n INTRODUCTION <\/td>\n<\/tr>\n \n 22<\/td>\n 1 Scope <\/td>\n<\/tr>\n \n 23<\/td>\n 2 Normative references <\/td>\n<\/tr>\n \n 24<\/td>\n 3 Terms and definitions <\/td>\n<\/tr>\n \n 26<\/td>\n 4 Classification
4.1 According to the method of operation
4.1.1 RCM functionally dependent on line voltage
4.1.2 RCM functionally dependent on an energy source other than line voltage
4.2 According to the type of installation
4.3 According to the number of current paths
4.4 According to the ability to adjust the residual operating current
4.5 According to the possibility of adjusting the time-delay
4.6 According to the protection against external influences
4.7 According to the method of mounting
4.8 According to the method of connection
4.9 According to the type of connection of the load conductors
4.9.1 RCM to which the monitored line is not directly connected <\/td>\n<\/tr>\n\n 27<\/td>\n 4.9.2 RCM to which the monitored line is directly connected
4.10 According to fault indicating means
4.11 According to ability to directionally discriminate between supply-side andload-side residual currents
4.12 According to the supply system
4.12.1 RCM for use in AC supply systems
4.12.2 RCM for use in DC supply systems
4.13 According to the type of residual current monitored
4.14 According to the method of residual current detection
5 Characteristics of RCMs
5.1 Summary of characteristics <\/td>\n<\/tr>\n\n 28<\/td>\n 5.2 Rated quantities and other characteristics
5.2.1 Rated voltage
5.2.2 Rated current (In)
5.2.3 Rated residual operating current (I\u0394n) <\/td>\n<\/tr>\n\n 29<\/td>\n 5.2.4 Rated residual non-operating current (I\u0394no)
5.2.5 Rated frequency
5.2.6 Operating characteristics
5.3 Standard and preferred values
5.3.1 Preferred values of rated voltage (Ue) <\/td>\n<\/tr>\n\n 30<\/td>\n 5.3.2 Preferred values of rated current (In)
5.3.3 Preferred values of rated residual operating current (I\u0394n)
5.3.4 Standard value of residual non-operating current (I\u0394no)
5.3.5 Standard minimum value of the non-operating overcurrent in the case of single-phase load through an RCM
5.3.6 Preferred values of rated frequency
5.3.7 Standard and preferred values of the rated conditional short-circuit current (Inc) (only applicable to RCMs classified according to 4.9.2) <\/td>\n<\/tr>\n\n 31<\/td>\n 5.3.8 Maximum actuating time (Tmax)
5.3.9 Minimum non-actuating time (Tmin)
5.4 Coordination with short-circuit protective devices (SCPDs) (only valid for RCMs classified according to 4.9.2)
5.4.1 General
5.4.2 Rated conditional short-circuit current (Inc)
5.4.3 Rated conditional residual short-circuit current (I\u0394c)
6 Marking and other product information <\/td>\n<\/tr>\n\n 32<\/td>\n Tables
Table 1 \u2013 Marking <\/td>\n<\/tr>\n\n 34<\/td>\n 7 Standard conditions for operation in service and for installation
7.1 Standard conditions <\/td>\n<\/tr>\n\n 35<\/td>\n 7.2 Conditions of installation
8 Requirements for construction and operation
8.1 Mechanical design
8.1.1 General
8.1.2 Features
Table 2 \u2013 Standard conditions for operation in service <\/td>\n<\/tr>\n\n 36<\/td>\n 8.1.3 Clearances and creepage distances <\/td>\n<\/tr>\n \n 37<\/td>\n 8.1.4 Screws, current-carrying parts and connections
Table 3 \u2013 Clearances and creepage distances <\/td>\n<\/tr>\n\n 38<\/td>\n 8.1.5 Terminals for external conductors <\/td>\n<\/tr>\n \n 39<\/td>\n Table 4 \u2013 Connectable cross-sections of copper conductors for screw-type terminals <\/td>\n<\/tr>\n \n 40<\/td>\n 8.2 Protection against electric shock <\/td>\n<\/tr>\n \n 41<\/td>\n 8.3 Dielectric properties
8.4 Temperature rise
8.4.1 General
8.4.2 Temperature rise limits <\/td>\n<\/tr>\n\n 42<\/td>\n 8.4.3 Ambient air temperature
8.5 Operating characteristic
8.6 Directional discrimination
8.7 Operational endurance
8.8 Performance at short-circuit currents
8.9 Resistance to mechanical impact
Table 5 \u2013 Temperature rise values <\/td>\n<\/tr>\n\n 43<\/td>\n 8.10 Resistance to heat
8.11 Resistance to abnormal heat and to fire
8.12 Test device
8.13 Correct operation of RCMs within the supply voltage range
8.14 Behaviour of RCMs in case of overcurrents in the main circuit <\/td>\n<\/tr>\n\n 44<\/td>\n 8.15 Resistance of RCMs to unwanted initiating of an alarm due to current surges caused by impulse voltages
8.16 Behaviour of RCMs in case of earth fault currents comprising DC components
8.17 Reliability
8.18 Electromagnetic compatibility (EMC)
8.18.1 General
8.18.2 Immunity requirements
8.18.3 Emission requirements
8.19 Connection of an external current transformer (CT)
8.20 Response to temporary overvoltages on the LV side due to fault conditions on the HV side <\/td>\n<\/tr>\n\n 45<\/td>\n 9 Tests
9.1 General
Table 6 \u2013 List of type tests depending on RCM classification <\/td>\n<\/tr>\n\n 46<\/td>\n 9.2 Test conditions
9.3 Test of indelibility of marking
Table 7 \u2013 Test copper conductors corresponding to the rated currents <\/td>\n<\/tr>\n\n 47<\/td>\n 9.4 Test of reliability of screws, current-carrying parts and connections
Table 8 \u2013 Screw thread diameters and applied torques <\/td>\n<\/tr>\n\n 48<\/td>\n 9.5 Test of reliability of terminals for external conductors
Table 9 \u2013 Pulling forces <\/td>\n<\/tr>\n\n 49<\/td>\n 9.6 Verification of protection against electric shock
Table 10 \u2013 Conductor dimensions <\/td>\n<\/tr>\n\n 50<\/td>\n 9.7 Test of dielectric properties
9.7.1 Resistance to humidity
9.7.2 Insulation resistance of the main circuits of RCMs classified according to 4.9.2 <\/td>\n<\/tr>\n\n 51<\/td>\n 9.7.3 Dielectric strength of the main circuit of RCMs classified according to 4.9.2 <\/td>\n<\/tr>\n \n 52<\/td>\n 9.7.4 Insulation resistance and dielectric strength of control and auxiliary circuits
Table 11 \u2013 Test voltage of control and auxiliary circuits <\/td>\n<\/tr>\n\n 53<\/td>\n 9.7.5 Secondary circuit of detection transformers
9.7.6 Capability of the RCM to withstand high DC voltages due to insulation measurements
9.7.7 Verification of impulse withstand voltages <\/td>\n<\/tr>\n\n 55<\/td>\n 9.8 Test of temperature rise
9.8.1 Ambient air temperature
9.8.2 Test procedure
Table 12 \u2013 Rated impulse withstand voltage as a functionof the nominal voltage of the installation
Table 13 \u2013 Test voltage for verification of impulse withstand voltage <\/td>\n<\/tr>\n\n 56<\/td>\n 9.8.3 Measurement of the temperature rise of parts
9.8.4 Temperature rise of a part
9.9 Verification of the operating characteristics
9.9.1 Test circuit
9.9.2 Off-load tests with residual sinusoidal alternating currents at the reference temperature of 20 \u00b0C \u00b1 2 \u00b0C <\/td>\n<\/tr>\n\n 57<\/td>\n 9.9.3 Verification of the correct operation with load at the reference temperature
9.9.4 Verification of the connection and the function of an external currenttransformer (CT) <\/td>\n<\/tr>\n\n 58<\/td>\n 9.9.5 Verification of directional discrimination for RCMs classified according to 4.11 <\/td>\n<\/tr>\n \n 59<\/td>\n 9.10 Verification of operational endurance
9.10.1 General
9.10.2 Test procedure
9.11 Verification of short-circuit withstand capability
9.11.1 List of the short-circuit tests
9.11.2 Short-circuit tests <\/td>\n<\/tr>\n\n 60<\/td>\n Table 14 \u2013 Silver wire diameter as a function of rated current and short-circuit currents <\/td>\n<\/tr>\n \n 61<\/td>\n Table 15 \u2013 Minimum values of I2t and Ip <\/td>\n<\/tr>\n \n 62<\/td>\n Table 16 \u2013 Power factors for short-circuit tests <\/td>\n<\/tr>\n \n 64<\/td>\n 9.12 Verification of resistance to mechanical impact
9.12.1 General
9.12.2 Test for all RCM types <\/td>\n<\/tr>\n\n 66<\/td>\n 9.12.3 Rail-mounted RCMs
9.12.4 Plug-in type RCMs
9.13 Test of resistance to heat <\/td>\n<\/tr>\n\n 67<\/td>\n 9.14 Test of resistance to abnormal heat and to fire <\/td>\n<\/tr>\n \n 68<\/td>\n 9.15 Verification of the operation of the test device at the limits of rated voltage
9.16 Verification of limiting values of the non-operating current under overcurrent conditions
9.16.1 General
9.16.2 Verification of the limiting value of overcurrent in the case of a load through an RCM with two current paths <\/td>\n<\/tr>\n\n 69<\/td>\n 9.16.3 Verification of the limiting value of overcurrent in the case of a single-phase load through a three-pole or four-pole RCM
9.16.4 Verification of the limiting value of overcurrent in the case of a single-phase load through an RCM with an external detecting device (transformer) <\/td>\n<\/tr>\n\n 70<\/td>\n 9.17 Verification of resistance against unwanted operation due to current surges caused by impulse voltages
9.18 Void
9.19 Additional verification of the correct operation at residual currents with DC components
9.19.1 General <\/td>\n<\/tr>\n\n 71<\/td>\n Table 17 \u2013 Overview of test details for the RCM types <\/td>\n<\/tr>\n \n 72<\/td>\n 9.19.2 Verification of the correct operation for RCM Type A, Type F and Type B
Table 18 \u2013 Actuating current ranges <\/td>\n<\/tr>\n\n 73<\/td>\n 9.19.3 Verification of correct operation for RCM Type F and Type B
Table 19 \u2013 Frequency component values of test currentsand starting current values for verifying operating
Table 20 \u2013 Operating current ranges for composite residual current <\/td>\n<\/tr>\n\n 74<\/td>\n 9.19.4 Verification of correct operation for RCM Type B <\/td>\n<\/tr>\n \n 75<\/td>\n Table 21 \u2013 Residual non-operating and operating current according to frequenciesthat differ from the rated frequency 50\/60 Hz for RCM Type B <\/td>\n<\/tr>\n \n 77<\/td>\n 9.20 Verification of reliability
9.20.1 General
9.20.2 Climatic test <\/td>\n<\/tr>\n\n 79<\/td>\n 9.20.3 Test with temperature of 40 \u00b0C
9.21 Verification of ageing of electronic components
9.22 Verification of EMC requirements
9.22.1 General <\/td>\n<\/tr>\n\n 80<\/td>\n Table 22 \u2013 EMC tests <\/td>\n<\/tr>\n \n 81<\/td>\n 9.22.2 Description of quiescent mode and operate mode
9.22.3 Criterion A1
9.22.4 Criterion A2
9.22.5 Criterion B <\/td>\n<\/tr>\n\n 82<\/td>\n 9.23 Response of the RCM to temporary overvoltages on the LV side, due to fault conditions on the HV side
9.24 Test of resistance to rusting <\/td>\n<\/tr>\n\n 83<\/td>\n Figures
Figure 1 \u2013 Standing current in FE conductor <\/td>\n<\/tr>\n\n 84<\/td>\n Figure 2 \u2013 Standard test finger (9.6) <\/td>\n<\/tr>\n \n 85<\/td>\n Figure 3 \u2013 Test circuit for verification of the operating characteristics for RCMs <\/td>\n<\/tr>\n \n 86<\/td>\n Figure 4 \u2013 Test circuit for verification of directional discriminationin IT systems for RCMs classified according to 4.12 <\/td>\n<\/tr>\n \n 87<\/td>\n Figure 5 \u2013 Test circuit for verification of the correct operation of RCMsin the case of residual pulsating direct currents <\/td>\n<\/tr>\n \n 88<\/td>\n Table 23 \u2013 Explanation of letter symbols used in Figure 6 to Figure 9 <\/td>\n<\/tr>\n \n 89<\/td>\n Figure 6 \u2013 Test circuit for verification of the correct operation of RCMsin the case of residual pulsating direct currents superimposedby smooth direct current of 0,006 A <\/td>\n<\/tr>\n \n 90<\/td>\n Figure 7 \u2013 Test circuit for verification of the coordination with an SCPDof an RCM with two current paths (9.11) <\/td>\n<\/tr>\n \n 91<\/td>\n Figure 8 \u2013 Test circuit for verification of the coordination with an SCPD of an RCMwith three current paths in a three-phase circuit (9.11) <\/td>\n<\/tr>\n \n 92<\/td>\n Figure 9 \u2013 Test circuit for verification of the coordination with an SCPD of an RCMwith four current paths on a three-phase circuit with neutral (9.11) <\/td>\n<\/tr>\n \n 93<\/td>\n Figure 10 \u2013 Test apparatus for verification of the minimum I2t and Ip valuesto be withstood by the RCM (9.11.2.1 a)) <\/td>\n<\/tr>\n \n 94<\/td>\n Figure 11 \u2013 Mechanical impact test apparatus (9.12.2) <\/td>\n<\/tr>\n \n 95<\/td>\n Figure 12 \u2013 Striking element for pendulum impact test apparatus (9.12.2) <\/td>\n<\/tr>\n \n 96<\/td>\n Figure 13 \u2013 Mounting support for sample for mechanical impact test (9.12.2) <\/td>\n<\/tr>\n \n 97<\/td>\n Figure 14 \u2013 Example of mounting an unenclosed RCMfor mechanical impact test (9.12.2) <\/td>\n<\/tr>\n \n 98<\/td>\n Figure 15 \u2013 Example of mounting of panel mounting type RCMfor the mechanical impact test (9.12.2) <\/td>\n<\/tr>\n \n 99<\/td>\n Figure 16 \u2013 Application of force for mechanical test of rail-mounted RCM (9.12.3)
Figure 17 \u2013 Ball-pressure test apparatus (9.13.3) <\/td>\n<\/tr>\n\n 100<\/td>\n Figure 18 \u2013 Test circuit for verification of the limiting value of overcurrentin the case of single-phase load <\/td>\n<\/tr>\n \n 101<\/td>\n Figure 19 \u2013 Current ring wave 0,5 \u00b5s\/100 kHz
Figure 20 \u2013 Test circuit for the ring-wave test of RCMs <\/td>\n<\/tr>\n\n 102<\/td>\n Figure 21 \u2013 Stabilizing period for reliability test (9.20.2.4) <\/td>\n<\/tr>\n \n 103<\/td>\n Figure 22 \u2013 Reliability test cycle (9.20.2.4) <\/td>\n<\/tr>\n \n 104<\/td>\n Figure 23 \u2013 Example test circuit for verificationof ageing of electronic components (9.21) <\/td>\n<\/tr>\n \n 105<\/td>\n Figure 24 \u2013 RCMs without monitored lines connected
Figure 25 \u2013 RCMs with monitored lines connected <\/td>\n<\/tr>\n\n 106<\/td>\n Figure 26 \u2013 Example of a test circuit for verification of correct operation in case of residual sinusoidal alternating currents composed of multi-frequency components resulting from single-phase supplied speed motor control equipment <\/td>\n<\/tr>\n \n 107<\/td>\n Figure 27 \u2013 Test circuit for verification of correct operation in case of residual sinusoidal alternating current up to 1 000 Hz <\/td>\n<\/tr>\n \n 108<\/td>\n Figure 28 \u2013 Test circuit for 2-,3- and 4-pole RCM Type B to verify the correct operationin case of residual pulsating direct currents which may resultfrom rectifying circuits supplied from two phases <\/td>\n<\/tr>\n \n 109<\/td>\n Figure 29 \u2013 Test circuit for 3- and 4-pole RCM Type B to verify the correct operationin case of residual pulsating direct currents which may resultfrom rectifying circuits supplied from three phases <\/td>\n<\/tr>\n \n 110<\/td>\n Figure 30 \u2013 Test circuit for 2-, 3- and 4-pole RCM Type Bto verify the correct operation in case ofa residual smooth direct current <\/td>\n<\/tr>\n \n 111<\/td>\n Figure 31 \u2013 Diagrammatic representation for glow-wire test <\/td>\n<\/tr>\n \n 112<\/td>\n Figure 32 \u2013 Test circuit for 2-, 3- and 4-pole RCM Type B to verify the correct operationin case of a residual alternating current superimposedon a smooth direct current <\/td>\n<\/tr>\n \n 113<\/td>\n Annex A (normative)Test sequence and number of samples to be submitted for verification of conformity to this document
A.1 General
A.2 Test sequences
Table A.1 \u2013 Test sequences <\/td>\n<\/tr>\n\n 114<\/td>\n A.3 Number of samples to be submitted for full test procedure
A.4 Number of samples to be submitted for simplified test procedures in case of submitting simultaneously a range of RCMs of the same fundamental design
Table A.2 \u2013 Number of samples submitted to tests <\/td>\n<\/tr>\n\n 116<\/td>\n Table A.3 \u2013 Tests with a reduced number of samples <\/td>\n<\/tr>\n \n 117<\/td>\n Annex B (normative)Determination of clearances and creepage distances <\/td>\n<\/tr>\n \n 118<\/td>\n Figure B.1 \u2013 Illustrations of the application of creepage distances <\/td>\n<\/tr>\n \n 119<\/td>\n Figure B.2 \u2013 Illustrations of the application of creepage distances <\/td>\n<\/tr>\n \n 120<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Electrical accessories. Residual current monitors (RCMs) – RCMs for household and similar uses<\/b><\/p>\n
\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2021<\/td>\n 122<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":371585,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[511,2641],"product_tag":[],"class_list":{"0":"post-371577","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-120-50","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\/371577","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\/371585"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=371577"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=371577"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=371577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}