Bsi bs en 50144 2 9 1996 (1998)

BRITISH STANDARD BS EN 50144 2 9 1996 Safety of hand held electric motor operated tools — Part 2 9 Particular requirements for tappers The European Standard EN 50144 2 9 1996 has the status of a Briti[.]

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BRITISH STANDARD BS EN

50144-2-9:1996

Safety of hand-held

electric motor operated

tools —

Part 2-9: Particular requirements for

tappers

The European Standard EN 50144-2-9:1996 has the status of a

British Standard

ICS 25.100.50; 25.140.20

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This British Standard, having

been prepared under the

direction of the Electrotechnical

Sector Board, was published

under the authority of the

Standards Board and comes

into effect on

15 October 1996

The following BSI references

relate to the work on this

standard:

Committee reference CPL/61/6

Draft for comment 92/05033 DC

ISBN 0 580 25893 9

Committees responsible for this British Standard

The preparation of this British Standard was entrusted by Technical Committee CPL/61, Safety of electrical appliances, to Subcommittee CPL/61/6, Portable motor-operated tools, upon which the following bodies were

represented:

Agricultural Engineers Association Association of Control Manufacturers (TACMA (BEAMA Ltd.)) Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.)

Association of Manufacturers of Domestic Electrical Appliances Consumer Policy Committee of BSI

Consumers’ Association Department of Trade and Industry (Consumer Safety Unit, CA Division) Electricity Association

Health and Safety Executive Hire Association Europe Institution of Incorporated Executive Engineers Portable Electric Tool Manufacturers’ Association Rotating Electrical Machines Association (BEAMA Ltd.) Co-opted members

Amendments issued since publication

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BS EN 50144-2-9:1996

Contents

Page

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ii © BSI 11-1998

National foreword

This British Standard has been prepared by Subcommittee CPL/61/6 and is the

English language version of EN 50144-2-9:1996 Safety of hand-held electric motor

operated tools Part 2-9: Particular requirements for tappers, published by the

European Committee for Electrotechnical Standardization (CENELEC) It is to

be read in conjunction with BS EN 50144-1:1996 General requirements, which it

supplements or modifies The many references to Part 1 should be read as references to BS EN 50144-1:1996, which is the English language version of

EN 50144-1:1995

The foreword of EN 50144-2-9 makes reference to the “date of withdrawal”, dow,

of the relevant national standard In this case the relevant national standard is

BS 2769-2.9:1984 which will be withdrawn on 1 December 1996 in accordance with the CENELEC Internal Regulations Reference is also made to the application of CENELEC Memorandum No 6 with regard to certification Attention is drawn to Note 7 to Memorandum No 6 which states:

“The use of the certificate or mark licence in the running production may not

go on for more than 60 months after dow This should allow necessary changes

in the production line and to use up supplies

Within the established period after dow the certificates and mark licences will

have to be reconsidered and cancelled or reissued”

For tools intended to be used in locations where special conditions prevail, as in ships and vehicles, and in hazardous locations, for example, where explosions are liable to occur, requirements additional to those specified in the standard may be necessary

This standard calls for test procedures that may be injurious to safety or health

if adequate precautions are not taken when conducting tests

Product certification

Attention is drawn to the fact that products conforming to this British Standard may be approved by BSI Product Certification, and that such certification may be used for the purposes of participation in the CENELEC Certification Agreement (Details of the BSI certification marks are given on the inside back cover.)

A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application

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

Summary of pages

This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover

This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover

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EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 50144-2-9

February 1996

Descriptors: Hand-held electric motor operated tools, safety requirements, protection against electric shocks, fire protection, protection

against mechanical hazards

English version

Safety of hand-held electric motor operated tools Part 2-9: Particular requirements for tappers

Sécurité des outils électroportatifs à moteur

Partie 2-9: Règles particulières pour les

taraudeuses

Sicherheit von handgeführten motorbetriebenen Elektrowerkzeugen Teil 2-9: Besondere Anforderungen für Gewindebohrmaschinen

This European Standard was approved by CENELEC on 1994-10-04

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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom

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

Ref No EN 50144-2-9:1996 E

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2

Foreword

This European Standard has been prepared by the

Technical Committee 61F, Hand-held and

transportable electric motor operated tools

The text of the draft was submitted to the Unique

Acceptance Procedure (UAP) in December 1993 and

was approved by CENELEC as EN 50144-2-9

on 1994-10-04

A draft for an amendment was submitted to the

Unique Acceptance Procedure in April 1994 and was

approved by CENELEC on 1994-10-04 for inclusion

into the European Standard

This European Standard replaces

HD 400.3I S1:1981

The following dates were fixed:

As far as certification is concerned, CENELEC

Memorandum 6 applies

This standard is divided into two Parts:

Part 1: General Requirements, comprising clauses of

a general character

Part 2: Particular Requirements, dealing with

particular types of appliance The clauses of these

particular requirements supplement or modify the

corresponding clauses in Part 1 Where the text of

Part 2 indicates an “addition” to, or a “replacement”

of the relevant requirement, test specification or

explanation of Part 1, these changes are made to the

relevant text of Part 1, which then becomes part of

the standard Where no change is necessary, the

words “This clause of Part 1 is applicable” are used

in Part 2

NOTE In this standard the following print types are used:

— Requirements proper: in roman type;

— Test specification: in italic type;

— Explanatory matter: in smaller type.

Contents

Page

15 Insulation resistance and electric

23 Supply connection and external flexible

27 Creepage distances, clearances and

28 Resistance to heat, fire and tracking 4

— latest date by which the EN

has to be implemented at

national level by

publication of an identical

national standard or by

— latest date by which the

national standards

conflicting with the EN

have to be withdrawn (dow) 1996-12-01

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EN 50144-2-9:1996

1 Scope

This clause of Part 1 is applicable except as follows:

1.1 Addition:

This standard applies to tappers

2 Definitions

2.2 Replacement:

18 normal load

The load obtained when the tapper is operated

intermittently, each cycle comprising a period of

operation of 10 min and a rest period of 10 min with

the tapper switched off, the load during the periods

of operation being such that the input, in watts, is

equal to rated input

NOTE The normal load is based on the rated voltage or on the

upper limit of the rated voltage range.

3 General requirements

This clause of Part 1 is applicable

4 General conditions for the tests

4.10 Addition:

For tests carried out under normal load, the load

may be applied by means of a brake.

5 Rating

6 Classification

7 Marking

7.1 Addition:

Tappers shall be marked with:

— maximum diameter, in millimetres, of the thread which can be cut

NOTE Unless otherwise indicated on the tapper, the marking

for maximum diameter of the thread which can be cut is related

to cutting a unified metric ISO thread in steel having a tensile

strength of 390 MPa (390 N/mm 2 ) and a thickness of twice the

thread diameter.

8 Protection against electric shock

9 Starting

10 Input and current

10.1 This subclause is not applicable

10.2 Addition

The measurement is made at the end of the third period of operation

11 Heating

11.5 Addition:

Temperature rises are determined at the end of the sixth period of operation

12 Leakage current

13 Environmental requirements

13.2.3 Replacement of paragraphs 1, 2 and 3:

Tappers are tested at no-load

13.2.4 Addition:

The tap holder shall be horizontal

13.3 Replacement

The vibration level for hand-arm vibration in the

user instructions, as required by 7.13.1, shall be

quoted as being less than 2,5 m/s2

14 Moisture resistance

15 Insulation resistance and electric strength

16 Endurance

17 Abnormal operation

18 Mechanical hazards

19 Mechanical strength

20 Construction

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21 Components

22 Internal wiring

23 Supply connection and external

flexible cables and cords

24 Terminals for external conductors

25 Provision for earthing

26 Screws and connections

27 Creepage distances, clearances and distances through insulation

28 Resistance to heat, fire and tracking

29 Resistance to rusting

30 Radiation

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EN 50144-2-9:1996

Annexes

The annexes of Part 1 are applicable

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BS EN 50144-2-9:1996

BSI Certification marking

The BSI Kitemark shown below may be used under licence on products which have been certified to this standard

Information on the conditions under which a licence can be granted may be obtained from BSI Product Certification, Maylands Avenue, Hemel Hempstead, Hertfordshire HP2 4sQ

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389 Chiswick High Road

London

W4 4AL

|

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Tiêu đề	Safety of hand-held electric motor operated tools — Part 2-9: Particular requirements for tappers
Trường học	Institute of Technology Tallaght
Chuyên ngành	Safety of Hand-Held Electric Motor Operated Tools
Thể loại	British Standard
Năm xuất bản	1996
Thành phố	Tallaght

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Số trang	12
Dung lượng	273,9 KB