EN 61810-7:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Electromechanical elementary relays - Part 7: Test and measurement proceduresElektromehanski osnovni releji - 7. del: Preskusni in merilni postopki (IEC 61810-7:2006)Relais élémentaires électromécaniques - Partie 7: Méthodes d'essai et de mesureElektromechanische Elementarrelais - Teil 7: Mess- und PrüfverfahrenTa slovenski standard je istoveten z:EN 61810-7:2006SIST EN 61810-7:2006en29.120.70ICS:SLOVENSKI
STANDARDSIST EN 61810-7:200601-november-2006

EUROPEAN STANDARD EN 61810-7 NORME EUROPÉENNE
EUROPÄISCHE NORM June 2006
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2006 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61810-7:2006 E
ICS 29.120.70
English version
Electromechanical elementary relays
Part 7: Test and measurement procedures (IEC 61810-7:2006)
Relais élémentaires électromécaniques Partie 7: Méthodes d'essai et de mesure (CEI 61810-7:2006)
Elektromechanische Elementarrelais
Teil 7: Mess- und Prüfverfahren
(IEC 61810-7:2006)
This European Standard was approved by CENELEC on 2006-05-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

- 2 -
Foreword The text of document 94/226/FDIS, future edition 2 of IEC 61810-7, prepared by IEC TC 94, All-or-nothing electrical relays, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61810-7 on 2006-05-01. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop)
2007-02-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2009-05-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61810-7:2006 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60479 NOTE
Harmonized in EN 60749 series (not modified). IEC 60947-5-1 NOTE
Harmonized as EN 60947-5-1:2004 (not modified). IEC 61810-2 NOTE
Harmonized as EN 61810-2:2005 (not modified).
__________
- 3 - EN 61810-7:2006
Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60068-2-1 + A1 + A2 1990 1993 1994 Environmental testing
Part 2: Tests - Tests A: Cold EN 60068-2-1 + A1 + A2 1993 1993 1994
IEC 60068-2-2 + A1 + A2 1974 1993 1994 Environmental testing Part 2: Tests - Tests B: Dry heat EN 60068-2-2 + A1 + A2
1993 1993 1994
IEC 60068-2-6 + corr. March
1995 1995 Environmental testing
Part 2: Tests - Test Fc: Vibration (sinusoidal) EN 60068-2-6 1995
IEC 60068-2-7 + A1 1983 1986 Environmental testing.
Part 2: Tests. Test Ga: Acceleration, steady state
EN 60068-2-7
IEC 60068-2-10 2005 Environmental testing
Part 2-10: Tests -Test J and guidance: Mould growth EN 60068-2-10 2005
IEC 60068-2-11 + corr. December
1981 1999 Environmental testing
Part 2: Tests - Test Ka: Salt mist EN 60068-2-11 1999
IEC 60068-2-13 1983 Environmental testing
Part 2: Tests - Test M: Low air pressure EN 60068-2-13 1999
IEC 60068-2-14 + A1 1984 1986 Environmental testing
Part 2: Tests - Test N: Change of temperature EN 60068-2-14
IEC 60068-2-17 1994 Environmental testing
Part 2: Tests - Test Q: Sealing EN 60068-2-17 1994
IEC 60068-2-20 + A2 1979 1987 Environmental testing Part 2: Tests - Test T: Soldering
HD 323.2.20 S3
IEC 60068-2-21 1999 Environmental testing
Part 2-21: Tests - Test U: Robustness of terminations and integral mounting devices EN 60068-2-21 1999
IEC 60068-2-27 1987 Environmental testing Part 2: Tests - Test Ea and guidance: Shock EN 60068-2-27 1993
IEC 60068-2-29 1987 Environmental testing Part 2: Tests - Test Eb and guidance: Bump EN 60068-2-29 1993
IEC 60068-2-30 2005 Environmental testing
Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle) EN 60068-2-30 2005

- 4 - Publication Year Title EN/HD Year IEC 60068-2-42 2003 Environmental testing
Part 2-42: Tests - Test Kc: Sulphur dioxide test for contacts and connections EN 60068-2-42 2003
IEC 60068-2-43 2003 Environmental testing
Part 2-43: Tests -Test Kd: Hydrogen sulphide test for contacts and connections EN 60068-2-43 2003
IEC 60068-2-45 + A1 1980 1993 Environmental testing Part 2: Tests - Test Xa and guidance: Immersion in cleaning solvents EN 60068-2-45 + A1 1992 1993
IEC 60068-2-58 2004 Environmental testing Part 2-58: Tests - Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD) EN 60068-2-58 + corr. December
2004 2004
IEC 60068-2-64 + corr. October
1993 1993 Environmental testing
Part 2: Test methods - Test Fh: Vibration, broad-band random (digital control) and guidance EN 60068-2-64 1994
IEC 60068-2-68 1994 Environmental testing
Part 2: Tests - Test L: Dust and sand EN 60068-2-68 1996
IEC 60068-2-78 2001 Environmental testing
Part 2-78: Tests - Test Cab: Damp heat, steady state EN 60068-2-78 2001
IEC 60512-7 1993 Electromechanical components for electronic equipment - Basic testing procedures and measuring methods
Part 7: Mechanical operating tests and sealing tests - -
IEC 60695-2 Series Fire hazard testing
Part 2: Test methods
EN 60695-2 Series
IEC 60695-2-10 2000 Fire hazard testing
Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure EN 60695-2-10 2001
IEC 60695-2-11 + corr. January
2000 2001 Fire hazard testing
Part 2-11: Glowing/hot-wire based test methods - Glow-wire flammability test method for end-products EN 60695-2-11 2001
IEC 60695-2-12 2000 Fire hazard testing
Part 2-12: Glowing/hot-wire based test methods - Glow-wire flammability test method for materials EN 60695-2-12 2001
IEC 60695-2-13 2000 Fire hazard testing
Part 2-13: Glowing/hot-wire based test methods - Glow-wire ignitability test method for materials EN 60695-2-13 2001

- 5 - EN 61810-7:2006 Publication Year Title EN/HD Year IEC 60695-11-5 2004 Fire hazard testing
Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance EN 60695-11-5 2005
IEC 60999-1 1999 Connecting devices - Electrical copper conductors - Safety requirements for screw-type and screwless-type clamping units
Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm² up to 35 mm² (included) EN 60999-1 2000
IEC 61210 (mod) 1993 Connecting devices - Flat quick-connect terminations for electrical copper conductors -Safety requirements EN 61210 1995
IEC 61180-1 1992 High-voltage test techniques for low-voltage equipment
Part 1: Definitions, test and procedure requirements EN 61180-1 1994
IEC 61180-2 1994 High-voltage test techniques for low-voltage equipment
Part 2: Test equipment EN 61180-2 1994
IEC 61672-1 2002 Electroacoustics - Sound level meters
Part 1: Specifications EN 61672-1 2003
IEC 61810-1 + corr. October
2003 2004 Electromechanical elementary relays
Part 1: General and safety requirements EN 61810-1 2004
IEC QC 001001 2000 IEC Quality Assessment System for Electronic Components (IECQ) - Basic rules - -

INTERNATIONAL STANDARD IEC61810-7 Second edition2006-03 Electromechanical elementary relays – Part 7: Test and measurement procedures
 IEC 2006

Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch
Web: www.iec.ch XC For price, see current cataloguePRICE CODE
Commission Electrotechnique InternationaleInternational Electrotechnical Commission

– 2 – 61810-7  IEC:2006(E)
CONTENTS FOREWORD.5
1 Scope.7 2 Normative references.7 3 Terms and definitions.9 4 Test and measurement procedures.18 4.1 General.18 4.2 Deviations.18 4.3 Precision of measurement.18 4.4 Power supplies.18 4.5 Reference conditions for testing.19 4.6 Visual inspection and check of dimensions.20 4.7 Mechanical tests and weighing.20 4.8 Relay coil properties.21 4.9 Dielectric strength test.25 4.10 Impulse voltage test.26 4.11 Insulation resistance.27 4.12 Contact-circuit resistance (or voltage drop).28 4.13 Functional tests.29 4.14 Timing tests.35 4.15 Climatic tests/sequence.38 4.16 Damp heat, steady state.40 4.17 Thermal resistance of the coil.41 4.18 Heating.42 4.19 Rapid change of temperature.44 4.20 Enclosure.44 4.21 Internal moisture.46 4.22 Corrosive atmospheres.46 4.23 Mould growth.47 4.24 Robustness of terminals.48 4.25 Soldering.48 4.26 Shock.49 4.27 Bump.50 4.28 Vibration.51 4.29 Acceleration.52 4.30 Electrical endurance.53 4.31 Mechanical endurance.56 4.32 Thermal endurance.56 4.33 Limiting continuous current.57 4.34 Overload (contact circuit).57 4.35 Load transfer.58 4.36 Electromagnetic compatibility.59 4.37 Magnetic interference.60 4.38 Crosstalk and insertion loss.61 4.39 Electrical contact noise.61

61810-7  IEC:2006(E) – 3 –
4.40 Thermoelectric e.m.f.62 4.41 Capacitance.62 4.42 Contact sticking (delayed release).63 4.43 Magnetic remanence.63 4.44 Acoustic noise.65 4.45 Continuity of protective earth connection.66 4.46 Fluid contamination.66 4.47 Resistance to cleaning solvents.67 4.48 Fire hazard.68 4.49 Temperature rise at rated load.68 4.50 Mechanical interlock.69 4.51 Insertion and withdrawal force (mating relay and socket).69
Annex A (normative)
Heating test arrangement.71 Annex B (normative)
Fire hazard testing.72 Annex C (normative)
Test circuit for endurance tests.77 Annex D (informative)
Inductive contact loads.84
Bibliography.86
Figure 1 – Typical circuit for the measurement of coil transient suppression.23 Figure 2 – Typical traces on an oscilloscope screen
during transient voltage measurement.24 Figure 3 – Monostable non-polarized relay.30 Figure 4 – Monostable relay polarized by diode.31 Figure 5 – Monostable polarized relay with magnetic biasing.32 Figure 6 – Bistable non-polarized relay (not applicable to remanence relays).33 Figure 7 – Bistable polarized relay (example).34 Figure 8 – Typical circuit for the measurement of time parameters.36 Figure 9 – Typical traces on an oscilloscope screen during time measurements.37 Figure 10 – Test circuit for load transfer.59 Figure 11 – Mounting array for adjacent similar relays.60 Figure 12 – Directions of the test current for magnetic interference test, method 3.61 Figure 13 – Sequential diagram for magnetic remanence test.64 Figure 14 – Installation for the test for acoustic noise emission.65 Figure A.1 – Test arrangement.71 Figure B.1 – Glow-wire and position of the thermocouple.73 Figure B.2 – Glow-wire test apparatus (example).74 Figure B.3 – Needle flame test details.76 Figure C.1 – Standard test circuit.77 Figure C.2 – Functional block diagram.78 Figure C.3 – Circuit for cable load.80 Figure C.4 – Test circuit for inrush current loads (for example capacitive loads and
simulated tungsten filament lamp loads) – a.c. circuits.81

– 4 – 61810-7  IEC:2006(E)
Figure C.5 – Example for a tungsten filament lamp test for relays rated 10/100 A/250 V~/ 2,5 ms.82 Figure C.6 – Test circuit for inrush current loads (for example capacitive loads and
simulated lamp loads) – d.c. circuits.82 Figure C.7 – Test circuit for inrush current loads (for example simulated fluorescent lamp loads) with power-factor correction.83
Table 1 – Coil voltage values and corresponding functions.29 Table 2 – Cross-sectional areas and lengths of conductors
dependent on the current carried by the terminal.43 Table 3 – Schematics for contact loading.55 Table 4 – Test fluids and temperatures of tests.67 Table C.1 – Characteristics of power sources for contact loads.78 Table C.2 – Standard contact load characteristics.79 Table D.1 – Verification of the making and breaking capacity for AC-15/DC-13
(normal conditions).84 Table D.2 – Making and breaking capacity for electrical endurance test.85

61810-7  IEC:2006(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
ELECTROMECHANICAL ELEMENTARY RELAYS –
Part 7: Test and measurement procedures
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61810-7 has been prepared by IEC technical committee 94: All-or-nothing electrical relays. This second edition cancels and replaces the first edition published in 1997. This second edition constitutes a technical revision. This new edition has been revised in order to – update all normative references, – adapt its contents to the newest issues of the other parts of this series of basic relay standards (IEC 61810-1 and IEC 61810-2), – establish coherence with other IEC standards (for example of the IEC 60068-2 series), – improve test and measurement procedures where appropriate, – delete those tests no longer used in case of elementary relays for industrial application.

– 6 – 61810-7  IEC:2006(E)
The text of this standard is based on the following documents: FDIS Report on voting 94/226/FDIS 94/231/RVD
Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. IEC 61810 consists of the following parts, under the general title Electromechanical elementary relays: Part 1: General and safety requirements Part 2: Reliability Part 7: Test and measurement procedures The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be
• reconfirmed; • withdrawn; • replaced by a revised edition, or • amended.
A bilingual version of this publication may be issued at a later date.

61810-7  IEC:2006(E) – 7 –
ELECTROMECHANICAL ELEMENTARY RELAYS –
Part 7: Test and measurement procedures
1 Scope This part of IEC 61810 states the test and measurement procedures for electromechanical elementary relays. It covers basic considerations which are, in general, common to all types of electromechanical elementary relays. Supplementary requirements may be necessitated by specific designs or application. The test and measurement procedures of this standard are described as individual provisions covering a specific requirement. When combining them in a test programme, care must be taken (for example by suitable grouping of tested relays) to ensure that preceding tests do not devalue subsequent ones.
Where in this standard the term “specified” is used, this means a prescription in the appropriate documentation for the relay, for example manufacturer’s data sheet, test specification, customer detail specification. For application within the IECQ system such prescriptions are contained in the detail specification as defined in Clause A.7 of QC 001001. NOTE 1 To improve the readability of this standard, the term “relay” is generally used in place of “electromechanical elementary relay”. NOTE 2 Requirements and tests related to the type testing of electromechanical elementary relays are contained in IEC 61810-1. For that purpose, the generally described test and measurement procedures of this standard have been prescribed in a more restricted and stringent form in IEC 61810-1. NOTE 3 Standards covering relays subjected to quality assessment in accordance with IECQ are compiled in the IEC 61811 series of publications. 2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-2-1:1990, Environmental testing – Part 2: Tests – Tests A: Cold
Amendment 1 (1993)
Amendment 2 (1994) IEC 60068-2-2:1974, Environmental testing – Part 2: Tests – Tests B: Dry heat
Amendment 1 (1993)
Amendment 2 (1994) IEC 60068-2-6:1995, Environmental testing – Part 2: Tests – Test Fc: Vibration (sinusoidal) IEC 60068-2-7:1983, Environmental testing – Part 2: Tests – Test Ga: Acceleration, steady state
Amendment 1 (1986) IEC 60068-2-10:2005, Environmental testing – Part 2: Tests – Test J and guidance: Mould growth IEC 60068-2-11:1981, Environmental testing – Part 2: Tests – Test Ka: Salt mist

– 8 – 61810-7  IEC:2006(E)
IEC 60068-2-13:1983, Environmental testing – Part 2: Tests – Test M: Low air pressure IEC 60068-2-14:1984, Environmental testing – Part 2: Tests – Test N: Change of temperature
Amendment 1 (1986) IEC 60068-2-17:1994, Environmental testing – Part 2: Tests – Test Q: Sealing IEC 60068-2-20:1979, Environmental testing – Part 2: Tests – Test T: Soldering
Amendment 2 (1987) IEC 60068-2-21:1999, Environmental testing – Part 2-21: Tests – Test U: Robustness of terminations and integral mounting devices IEC 60068-2-27:1987, Environmental testing – Part 2: Tests – Test Ea and guidance: Shock IEC 60068-2-29:1987, Environmental testing – Part 2: Tests – Test Eb and guidance: Bump
IEC 60068-2-30:2005, Environmental testing – Part 2: Tests – Test Db: Damp heat, cyclic (12 + 12-hour cycle)
IEC 60068-2-42:2003, Environmental testing – Part 2-42: Tests – Test Kc: Sulphur dioxide test for contacts and connections IEC 60068-2-43:2003, Environmental testing – Part 2-43: Tests – Test Kd: Hydrogen sulphide test for contacts and connections IEC 60068-2-45:1980, Environmental testing – Part 2: Tests – Test XA and guidance: Immersion in cleaning solvents
Amendment 1 (1993) IEC 60068-2-58:2004, Environmental testing – Part 2-58: Tests – Test Td – Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD) IEC 60068-2-64:1993, Environmental testing – Part 2: Test methods – Test Fh: Vibration, broad-band random (digital control) and guidance IEC 60068-2-68:1994, Environmental testing – Part 2: Tests – Test L: Dust and sand IEC 60068-2-78:2001, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state IEC 60512-7: 1993, Electromechanical components for electronic equipment; basic testing procedures and measuring methods – Part 7: Mechanical operating tests and sealing tests IEC 60695-2 (all parts), Fire hazard testing – Part 2: Test methods
IEC 60695-2-10:2000, Fire hazard testing – Part 2-10: Glowing/hot wire based test methods – Glow-wire apparatus and common test procedure IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot wire based test methods – Glow-wire flammability test method for end-products IEC 60695-2-12:2000, Fire hazard testing – Part 2-12: Glowing/hot wire based test methods – Glow-wire flammability test method for materials

61810-7  IEC:2006(E) – 9 –
IEC 60695-2-13:2000, Fire hazard testing – Part 2-13: Glowing/hot wire based test methods – Glow-wire ignitability test method for materials IEC 60695-11-5:2004, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method – Apparatus, confirmatory test arrangement and guidance IEC 60999-1:1999, Connecting devices – Electrical copper conductors – Safety requirements for screw-type and screwless-type clamping units – Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm2 up to 35 mm2 (included) IEC 61210:1993, Connecting devices – Flat quick-connect terminations for electric copper conductors – Safety requirements IEC 61180-1:1992, High-voltage test techniques for low-voltage equipment – Part 1: Definitions, test and procedure requirements IEC 61180-2:1994, High-voltage test techniques for low-voltage equipment – Part 2: Test equipment IEC 61672-1:2002, Electroacoustics – Sound level meters – Part 1: Specifications IEC 61810-1:2004, Electromechanical elementary relays – Part 1: General and safety requirements IECQ QC 001001:2000, IEC Quality Assessment System for Electronic Components (IECQ) – Basic Rules 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Types of relays 3.1.1
electromechanical relay electrical relay in which the intended response results mainly from the movement of mechanical elements
[IEV 444-01-04] 3.1.2
all-or-nothing relay electrical relay, which is intended to be energized by a quantity, the value of which is either within its operative range or effectively zero
[IEV 444-01-02] 3.1.3
elementary relay all-or-nothing relay which operates and releases without any intentional time delay [IEV 444-01-03]

– 10 – 61810-7  IEC:2006(E)
3.1.4
monostable relay electrical relay which, having responded to an energizing quantity and having changed its condition, returns to its previous condition when that quantity is removed
[IEV 444-01-07] 3.1.5
bistable relay electrical relay which, having responded to an energizing quantity and having changed its condition, remains in that condition after the quantity has been removed; a further appropriate energization is required to make it change its condition
[IEV 444-01-08] 3.1.6
polarized relay electrical relay, the change of condition of which depends upon the polarity of its DC energizing quantity
[IEV 444-01-09] 3.1.7
non-polarized relay electrical relay, the change of condition of which does not depend upon the polarity of its energizing quantity
[IEV 444-01-10] 3.2 Types of relays, based upon environmental protection (relay technology RT) 3.2.1
RT 0 unenclosed relay relay not provided with a protective case 3.2.2 RT I dust protected relay relay provided with a case which protects its mechanism from dust 3.2.3
RT II flux proof relay relay capable of being automatically soldered without allowing the migration of solder fluxes beyond the intended areas NOTE Where an enclosed construction is used, venting to the outside atmosphere is permissible. 3.2.4
RT III wash tight relay relay capable of being automatically soldered and subsequently undergoing a washing process to remove flux residues without allowing the ingress of flux or washing solvents NOTE In service, this type of relay is sometimes vented to the atmosphere after the soldering or washing process. 3.2.5
RT IV sealed relay relay provided with a case which has no venting to the outside atmosphere, and having a time constant better than 2 × 104 s (see IEC 60068-2-17)

61810-7  IEC:2006(E) – 11 –
3.2.6
RT V hermetically sealed relay sealed relay having an enhanced level of sealing, assuring a time constant better than
2 × 106 s (see IEC 60068-2-17) 3.3 Functions of a relay 3.3.1
release condition for a monostable relay, specified condition of the relay when it is not energized; for a bistable relay, one of the conditions, as declared by the manufacturer
[IEV 444-02-01] 3.3.2
operate condition for a monostable relay, specified condition of the relay when it is energized by the specified energizing quantity and has responded to that quantity; for a bistable relay, the condition other than the release condition as declared by the manufacturer
[IEV 444-02-02] 3.3.3
operate (verb) change from the release condition to the operate condition
[IEV 444-02-04] 3.3.4
release (verb) for a monostable relay, change from the operate condition to the release condition
[IEV 444-02-05] 3.3.5
reset (verb) for a bistable relay, change from the operate condition to the release condition
[IEV 444-02-06] 3.3.6
change over (verb) for a monostable relay, operate or release; for a bistable relay, operate or reset
[IEV 444-02-07] 3.3.7
cycle (verb) for a monostable relay, operate and then release or vice versa; for a bistable relay, operate and then reset or vice-versa [IEV 444-02-08] 3.3.8
revert (verb) for a specific type of polarized relay, release/reset again, or remain in the release condition, when supplied with a coil voltage in excess of that required for operation and of the same polarity as required for operation
[IEV 444-02-09, modified]
– 12 – 61810-7  IEC:2006(E)
3.3.9
revert reverse (verb) for a specific type of polarized bistable relay, operate again, or remain in the operate condition, when supplied with a coil voltage in excess of that required for resetting and of the same polarity as required for resetting
[IEV 444-02-10, modified] 3.4 Types of contacts 3.4.1
make contact contact which is closed when the relay is in its operate condition and which is open when the relay is in its release condition
[IEV 444-04-17] 3.4.2
break contact contact which is open when the relay is in its operate condition and which is closed when the relay is in its release condition
[IEV 444-04-18] 3.4.3
change-over contact combination of two contact circuits with three contact members, one of which is common to the two contact circuits; such that when one of these contact circuits is open, the other is closed [IEV 444-04-19] 3.4.4
change-over make-before-break contact change-over contact in which the make contact circuit closes before the break contact circuit opens
[IEV 444-04-20] 3.4.5
change-over break-before-make contact change-over contact in which the break contact circuit opens before the make contact circuit closes
[IEV 444-04-21] 3.5 Prefixes for the values applicable to relays Values may be defined as rated, actual (“just”), test (“must”) or characteristic value and identified as such by using one of these words as a prefix. The prefixes are also applicable to timing values. 3.5.1
rated value value of a quantity used for specification purposes, established for a specified set of operating conditions of a relay
[IEV 444-02-18, modified]
61810-7  IEC:2006(E) – 13 –
3.5.2
actual (“just”) value value of a quantity determined by measurement on a specific relay, during performance of a specified function
[IEV 444-02-21] 3.5.3
test (“must”) value value of a quantity for which the relay shall comply with a specified action during a test
[IEV 444-02-20] 3.5.4
characteristic value value of a quantity with which, in the initial condition of a relay or for a specified number of cycles as specified, the relay shall comply with a specified requirement
[IEV 444-02-19, modified] 3.6 Energization values 3.6.1
energizing quantity electrical quantity which, when applied to the coil(s) of a relay under specified conditions, enables it to fulfil its purpose
[IEV 444-03-01, modified] NOTE 1 For elementary relays, the energizing quantity is usually a voltage. Therefore, the input voltage as energizing quantity is used in the definitions given below. When a relay is energized by a given current instead, the respective terms and definitions apply with “current” used instead of “voltage”. NOTE 2 The general term “input voltage” used in IEV Chapter 444 applies to all types of elementary relays (e.g. including solid-state relays). For electromechanical elementary relays the more specific term “coil voltage” has been chosen for the terms of 3.6, as in IEC 61810-1. 3.6.2
coil voltage voltage applied as an energizing quantity
[IEV 444-03-03] 3.6.3
operative range range of values of coil voltage for which a relay is able to perform its specified function
[IEV 444-03-05, modified] NOTE For the following terms, refer also to Figures 3 to 7 which show the sequential functions of relays covered by the definitions. 3.6.4
magnetic preconditioning value value of the coil voltage at which the relay attains a defined magnetic condition
[IEV 444-03-19] NOTE 1 For polarized relays, distinction is made between preconditioning in forward (operate) direction, and preconditioning in reverse direction. NOTE 2 For bistable relays, preconditioning may also be used to set the relay to a defined position.

– 14 – 61810-7  IEC:2006(E)
3.6.5
non-operate voltage value of the coil voltage at which a relay does not operate
[IEV 444-03-07, modified] 3.6.6
operate voltage, set voltage (for bistable relays only) value of the coil voltage at which a relay operates
[IEV 444-03-06, modified] 3.6.7
non-release voltage value of the coil voltage at which a monostable relay does not release
[IEV 444-03-09, modified] 3.6.8
release voltage value of the coil voltage at which a monostable relay releases
[IEV 444-03-08, modified] 3.6.9
non-reset voltage value of the coil voltage at which a bistable relay does not reset
[IEV 444-03-11, modified] 3.6.10
reset voltage value of the coil voltage at which a bistable relay resets
[IEV 444-03-10, modified] 3.6.11
revert voltage for a specific type of polarized relay, value of the coil voltage greater than and with the same polarity as the operate voltage, at which the relay reverts
[IEV 444-03-12, modified] 3.6.12
non-revert voltage for a specific type of polarized relay, value of the coil voltage greater than and with the same polarity as the operate voltage, at which the relay does not revert
[IEV 444-03-13, modified] 3.6.13
revert reverse voltage for a specific type of polarized bistable relay, value of the coil voltage greater than and with the same polarity as the reset voltage, at which the relay reverts reverse
[IEV 444-03-14, modified]
61810-7  IEC:2006(E) – 15 –
3.6.14
non-revert reverse voltage for a specific type of polarized bistable relay, value of the coil voltage greater than and with the same polarity as the reset voltage, at which the relay does not revert reverse
[IEV 444-03-15, modified] 3.6.15
reverse polarity voltage for a polarized monostable relay, value of the coil voltage of reverse polarity at which the relay does not operate
[IEV 444-03-16, modified] 3.6.16
active power under periodic conditions, mean value, taken over one period T, of the instantaneous power p: ∫=TtpTP0d1
NOTE 1 Under sinusoidal conditions, the active power is the real part of the complex power. NOTE 2 The SI unit for active power is the watt.
[IEV 131-11-42] 3.6.17
apparent power product of the r.m.s. voltage U between the terminals of a two-terminal element or two-terminal circuit and the r.m.s. electric current I in the element or circuit: S = UI NOTE 1 Under sinusoidal conditions, the apparent power is the modulus of the complex power. NOTE 2 The SI unit for apparent power is the voltampere. [IEV 131-11-41] 3.7 Electrical properties of contacts
3.7.1 contact current electric current which a relay contact carries before opening or after closing
[IEV 444-04-26] 3.7.2
switching current electric current which a relay contact makes and/or breaks
[IEV 444-04-27] 3.7.3
switching voltage voltage between the contact members before closing or after opening of a relay contact
[IEV 444-04-25, modified]
– 16 – 61810-7  IEC:2006(E)
3.7.4
limiting continuous current greatest value of electric current which a closed contact is capable of carrying continuously under specified conditions
[IEV 444-04-28, modified] 3.7.5
contact noise spurious voltage which appears across the terminals of a closed contact
[IEV 444-04-33] 3.8 Contact load categories
3.8.1
contact load category 0
CC 0 load characterized by a maximum switching voltage of 30 mV and a maximum switching current of 10 mA 3.8.2
contact load category 1
CC 1 low load without contact arcing NOTE Arcing with a duration of up to 1 ms is disregarded. 3.8.3
contact load category 2
CC 2 high load where contact arcing can occur 3.9 Mechanical properties of contacts 3.9.1
contact tip
contact point part of a contact member at which the contact circuit opens or closes
[IEV 444-04-06] 3.9.2
contact gap gap between the contact tips (points) when the contact circuit is open
[IEV 444-04-09, modified] 3.9.3
contact force force which two contact members exert against each other at their contact tips (points) in the closed position
[IEV 444-04-10, modified] 3.9.4
contact member conductive part designed to co-act with another to close or open the contact
[IEV 444-04-05, modified]
61810-7  IEC:2006(E) – 17 –
3.10 Terms relating to times 3.10.1 operate time time interval between the application of the specified coil voltage to a relay in the release condition and the change of state of the last contact circuit, bounce time not included
[IEV 444-05-01, modified]
NOTE The operate time covers the closing time of a make contact, and the opening time of a break contact.
3.10.2 release time time interval between the removal of the specified coil voltage from a monostable relay in the operate condition and the change of state of the la
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