Bsi bs en 60998 2 2 2004

Unknown BRITISH STANDARD BS EN 60998 2 2 2004 Connecting devices for low voltage circuits for household and similar purposes — Part 2 2 Particular requirements for connecting devices as separate entit[.]

Connecting devices for

low-voltage circuits for

household and similar

purposes —

Part 2-2: Particular requirements for

connecting devices as separate entities

with screwless-type clamping units

The European Standard EN 60998-2-2:2004 has the status of a

British Standard

ICS 29.120.20

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This British Standard was

published under the authority

of the Standards Policy and

This British Standard is the official English language version of

EN 60998-2-2:2004 It was derived by CENELEC from IEC 60998-2-2:2002

It supersedes BS EN 60998-2-2:1994 which will be withdrawn on 1 April 2006.The CENELEC common modifications have been implemented at the

appropriate places in the text and are indicated by tags 

The UK participation in its preparation was entrusted by Technical Committee PEL/23, Electrical accessories, to Subcommittee PEL/23/2, Connecting devices, which has the responsibility to:

A list of organizations represented on this subcommittee can be obtained on request to its secretary

Cross-references

The British Standards which implement international or European

publications referred to in this document may be found in the BSI Catalogue

under the section entitled “International Standards Correspondence Index”, or

by using the “Search” facility of the BSI Electronic Catalogue or of

British Standards Online

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

Compliance with a British Standard does not of itself confer immunity from legal obligations.

— aid enquirers to understand the text;

— present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the

Amendments issued since publication

EUROPÄISCHE NORM April 2004

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

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members

as separate entities with screwless-type clamping units

(IEC 60998-2-2:2002, modified)

Dispositifs de connexion

pour circuits basse tension

pour usage domestique et analogue

Partie 2-2: Règles particulières

pour dispositifs de connexion

en tant que parties séparées

avec organes de serrage sans vis

(CEI 60998-2-2:2002, modifiée)

Verbindungsmaterial

für Niederspannungs-Stromkreise

für Haushalt und ähnliche Zwecke

Teil 2-2: Besondere Anforderungen für Verbindungsmaterial

als selbständige Betriebsmittel

mit schraubenlosen Klemmstellen (IEC 60998-2-2:2002, modifiziert)

This European Standard was approved by CENELEC on 2004-03-01 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, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

Foreword

The text of the International Standard IEC 60998-2-2:2002, prepared by SC 23F, Connecting devices,

of IEC TC 23, Electrical accessories, together with common modifications prepared by the CENELEC Reporting Secretariat SR 23F, was submitted to the formal vote and was approved by CENELEC as

EN 60998-2-2 on 2004-03-01

This European Standard supersedes EN 60998-2-2:1993

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) 2005-03-01

– latest date by which the national standards conflicting

with the EN have to be withdrawn (dow) 2007-03-01

This Part 2-2 is intended to be used in conjunction with EN 60998-1:2004

It supplements or modifies the corresponding clauses in EN 60998-1, so as to convert it into the European Standard: Particular requirements for connecting devices as separate entities with screwless-type clamping units

Where a particular subclause of Part 1 is not mentioned in this Part 2-2, that subclause applies as far

as is reasonable Where this standard states “addition”, “modification” or “replacement”, the relevant text in Part 1 should be adapted accordingly

In this standard,

a) the following print types are used:

- requirements proper: in roman type;

- test specifications: in italic type;

- explanatory matter: in smaller roman type

b) Subclauses and figures which are additional to those in Part 1 are numbered starting from 101; additional annexes are lettered AA, BB, etc

CONTENTS

1 Scope 4

2 Normative references 4

3 Definitions 4

4 General 5

5 General notes on tests 5

6 Main characteristics 5

7 Classification 5

8 Marking 5

9 Protection against electric shock 6

10 Connection of conductors 6

11 Construction 10

12 Resistance to ageing, to humid conditions, to ingress of solid foreign objects and to harmful ingress of water 11

13 Insulation resistance and electric strength 11

14 Mechanical strength 11

15 Temperature rise 13

16 Resistance to heat 14

17 Clearances and creepage distances 14

18 Resistance of insulating material to abnormal heat and fire 14

19 Resistance of insulating material to tracking 15

20 EMC requirement 15

Annex AA (normative) Number of sets of samples to be submitted to the tests 19

Annex BB (informative) Text deleted 20

Annex CC (informative) Examples for temperature-rise test according to 15.4 21

Figure 101 – Test apparatus according to 10.105 15

Figure 102 – Examples of screwless-type clamping units 16

Figure 103 – Information for the bending test 17

Figure CC.1 – Temperature-rise test – examples 21

Table 101 – Rated connecting capacity and connectable conductors 7

Table 102 – Relationship between mass, height and cross-sectional area of conductors 9

Table 103 – Relationship between pull force and cross-sectional area 9

Table 104 – Deflection test forces 12

Table AA.1 – Number of sets of samples and test sequences 19

CONNECTING DEVICES FOR LOW-VOLTAGE CIRCUITS FOR HOUSEHOLD AND SIMILAR PURPOSES – Part 2-2: Particular requirements for connecting

devices as separate entities with screwless-type clamping units

In this standard, screwless-type terminals are referred to as terminals

NOTE This standard does not include insulation piercing connecting devices (IEC 60998-2-3), twist-on connecting devices (IEC 60998-2-4) and flat, quick-connect terminations (IEC 60998-2-5)

This clause of Part 1 is applicable

5 General notes on tests

This clause of Part 1 is applicable except as follows:

5.3 Replacement:

The tests are carried out in the sequence listed for each set in Annex AA

5.4 Replacement of the first sentence by the following:

The necessary number of new samples to be submitted to the tests are divided into sets as

detailed in Annex AA and this standard is met if all tests are satisfied

7.101 Classification according to the types of conductors

which the terminal can accept

7.101.1 Universal terminal

7.101.2 Non-universal terminal

– terminals for solid conductors ;

– terminals for rigid conductors;

– terminals for flexible conductors

8 Marking

This clause of Part 1 is applicable except as follows:

8.101 Addition:

Non-universal terminals classified according to 7.101.2 shall be marked as follows:

– with the letter(s) “s” or “sol” for terminals declared for solid conductors;

– with the letter “r” for terminals declared for rigid conductors;

– with the letter “f” for terminals declared for flexible conductors

This marking shall appear where it is practical on the end product or on the smallest package unit or in technical information and/or catalogues

8.102 Addition:

An appropriate marking indicating the length of insulation to be removed before insertion of the conductor into the terminal shall be shown on the product or on the smallest package unit

or in technical information and/or catalogues

9 Protection against electric shock

This clause of Part 1 is applicable

10 Connection of conductors

This clause of Part 1 is applicable except as follows:

Addition:

10.101 The connection or disconnection of conductors shall be made

– either by the use of a general purpose tool or a convenient device integral with the terminal to open it and to assist the insertion or the withdrawal of the conductors (for example, for universal terminals);

– or by simple insertion For the disconnection of the conductors an operation other than a pull on the conductor only shall be necessary (for example, for push-wire terminals)

10.102 Terminals shall accept two or more conductors of the same or of different nominal

cross-sectional areas or compositions if applicable

Universal terminals shall accept rigid (solid or stranded) and flexible unprepared conductors Non-universal terminals shall accept the types of conductors declared by the manufacturer The relationship between the rated connecting capacity of clamping units and connectable conductors as well as data on diameters of conductors are given in Table 101

10.103 Each terminal shall accept conductors of cross-sectional areas and types as

indicated in Table 101, for the relevant values of the rated connecting capacity Terminals

shall provide, in addition, appropriate connection of at least the two successive smaller

cross-sectional areas, for example:

a) a terminal having the rated connecting capacity of 1 mm² shall clamp reliably a rigid and/or

flexible conductor of 0,5 mm², 0,75 mm² and 1 mm²;

b) a terminal having the rated connecting capacity of 10 mm² shall clamp reliably rigid

conductors of 4 mm², 6 mm² and 10 mm² and/or flexible conductors of 4 mm² and 6 mm²

c) a terminal having the rated connecting capacity of 25 mm² shall clamp reliably rigid

conductors of 10 mm², 16 mm² and 25 mm² and/or flexible conductors of 6 mm², 10mm²

and 16 mm²

d) a terminal for flexible conductors only and having a rated connecting capacity of 25 mm²

shall clamp reliably flexible conductors of 10 mm², 16 mm² and 25 mm²

(Exception: special types of terminals may accept a smaller range of cross-sectional areas as

declared by the manufacturer.)

Table 101 – Rated connecting capacity and connectable conductors

Connectable conductors and their theoretical diameters

0,51 0,63 0,9

0,53 0,66 1,1

0,2 0,34 0,5

0,61 0,8 1,1 0,75 0,75 1,0 1,2 0,75 1,3

NOTE 2 Diameters of the largest rigid and flexible conductors are based on Table 1 of

IEC 60228 and IEC 60344 Text deleted.

a Dimensions for Class 5 flexible conductors only, according to IEC 60228A

10.104 Compliance with the requirements of 10.101 to 10.103 shall be checked by

inspection, and by the following tests:

10.104.1 The test is carried out on three new terminals with copper conductors of the type

and the cross-sectional area, in accordance with Table 101, having the smallest and then the largest diameter conductor being connected to each clamping unit

This connection and subsequent disconnection shall be made 5 times with the smallest diameter conductor and 5 times with the largest diameter conductor

New conductors shall be used each time, except for the 5th time, when the conductor used for the 4th insertion is clamped at the same place

For each insertion, the conductors are either pushed as far as possible into the terminal or shall be inserted so that adequate connection is obvious

After these tests, the terminal shall not be damaged in such a way as to impair its further use

10.104.2 Three new terminals are fitted with new conductors of the type and of the

cross-sectional area according to Table 101 Before insertion into the terminal, wires of stranded rigid conductors and flexible conductors shall be reshaped

It shall be possible to fit the conductor into the terminal without undue force in the case of universal terminals and with the force necessary by hand in the case of push-wire terminals

The conductor is either pushed as far as possible into the terminal or has to be inserted so that adequate connection is obvious

After the test, no wire of the conductor shall have escaped outside the terminal

Addition:

10.105 Three new clamping units are fitted with new conductors of number, cross-sectional

area and type (flexible and/or rigid stranded) specified by the manufacturer in the equipment shown in Figure 101

The following tests shall be carried out using new samples for each of the following:

a) the conductors of the smallest cross-sectional area;

b) the conductors of the largest cross-sectional area

The length of the test conductor shall be 75 mm longer than the height H specified in Table 102

The test conductor is then connected in the clamping unit in the intended manner

The conductor is subjected to the following test:

The end of the conductor shall be passed through an appropriate sized bushing in a platen positioned at a height H below the equipment as given in Table 102 The bushing shall be positioned, in a horizontal plane, such that its centre line describes a circle of 75 mm diameter, concentric with the centre of the clamping unit, in the horizontal plane, the platen is then rotated at a rate of (10 ± 2) r/min

The distance between the mouth of the clamping unit and the upper surface of the bushing

shall be within 15 mm of the height in Table 102 The bushing may be lubricated to prevent

binding, twisting or rotation of the insulated conductor A mass, as specified in Table 102, is

to be suspended from the end of the conductor The duration of the test shall be 15 min

NOTE When securing the terminal, care must be taken to avoid exerting excessive force on the terminal which

may affect the connection

During the test, the conductor shall neither slip out of the clamping unit, nor break near the

clamping unit, nor shall the conductor be damaged in such a way as to render it unfit for

further use

Table 102 – Relationship between mass, height and cross-sectional area of conductors

Conductor cross-section Diameter of

260

260

0,3 0,4 1,0

1,5

6,5 6,5

260

260

0,4 0,4 2,5

4,0

9,5 9,5

280

280

0,7 0,9 6,0

10,0

9,5 9,5

280

280

1,4 2,0 16,0

25,0

13,0 13,0

300

300

2,9 4,5

Text deleted

a If the bushing hole diameter is not large enough to accommodate the conductor without binding, a bushing

having the next largest hole size may be used.

b Tolerance for height: H ± 15 mm

10.106 After the test of 10.105, the pull force given in Table 103 shall be applied to each

conductor tested in accordance with 10.105 The force shall be applied in one smooth and

continuous application, for 1 min, in the direction of the axis of the conductor During the test

the conductor shall not come out of the terminal

Table 103 – Relationship between pull force and cross-sectional area

Compliance is checked by inspection and by clauses 10.105 and 10.106

Tests for terminals where the conductor is not clamped between metal surfaces are under consideration

11.101 Clamping units shall be so designed and constructed that contact pressure shall not

be transmitted via insulating material, other than ceramic or pure mica, unless there is sufficient resiliency in the metallic parts, to compensate for any possible shrinkage or yielding

of the insulated material For clamping units for conductors up to and including 0,75 mm², one

of the surfaces may be of insulating material other than ceramic or pure mica

The possibility of using material other than metal, as compensation for any possible deformation, for example shrinkage, is under consideration

Compliance is checked by inspection

A test for the efficiency of the resiliency is under consideration

11.102 The insertion and disconnection of the conductors shall be made in accordance with

the manufacturer's instructions

Openings for the use of a tool intended to assist the insertion or disconnection shall be clearly distinguishable from the openings intended for the conductor(s)

Compliance is checked by inspection

11.103 Terminals shall be so designed and constructed that

– each conductor is clamped individually;

– during the connection or disconnection the conductors can be connected or disconnected either at the same time or separately