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The European Standard EN 50144-2-11 : 1996 has the status of a
British Standard
ICS 25.100.40; 25.140.20
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
Safety of hand-held electric
motor operated tools
Part 2-11 Particular requirements for
sabre saws and double blade
reciprocating saws
Trang 2BS EN 50144-2-11 : 1997
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 January 1997
The following BSI references
relate to the work on this
standard:
Committee reference CPL/61/6
Draft for comment 94/206318 DC
ISBN 0 580 26844 6
Amendments issued since publication
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
Trang 3 BSI 1997 i
Contents
Page
Trang 4ii BSI 1997
BS EN 50144-2-11 : 1997
National foreword
This British Standard has been prepared by subcommittee CPL/61/6 and is the English
language version of EN 50144-2-11 : 1996 Safety of hand-held electric motor operated
tools Part 2-11: Particular requirements for sabre saws and double blade reciprocating saws, 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 50144-2-11 makes reference to the `Date of withdrawal', dow, of the relevant national standard In this case there is no conflicting British Standard 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 mark are given on the inside back cover.)
Compliance with a British Standard does not of itself confer immunity from legal obligations.
Trang 5CENELEC
European Committee for Electrotechnical Standardization Comite EuropeÂen de Normalisation Electrotechnique EuropaÈisches Komitee fuÈr Electrotechnishe Normung
Central Secretariat: rue de Stassart 35, B-1050 Brussels
1996 Copyright reserved to CENELEC members
Ref No EN 50144-2-11 : 1996 E
ICS 25.140.20; 25.080.60
Descriptors: Hand-held electric motor-operated tools, sabre saws, reciprocating saws, safety requirements, protection against electric
shocks, fire protection, protection against mechanical hazards
English version
Safety of hand-held electric motor operated tools Part 2-11: Particular requirements for sabre saws and
double blade reciprocating saws
SeÂcurite des outils eÂlectroportatifs aÁ moteur
Partie 2-11: ReÁgles particulieÁres pour les scies
sabres et les scies alternatives aÁ lame double
Sicherheit handgefuÈhrter Elektrowerkzeuge Teil 2-11: Besondere Anforderungen an SaÈbelsaÈgen und SaÈgen mit hin- und hergehendem doppelten SaÈgeblatt
This European Standard was approved by CENELEC on 1995-03-06 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 standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom
Trang 6Page 2
EN 50144-2-11 : 1996
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 April 1994 and was
approved by CENELEC as EN 50144-2-11 on 1995-03-06
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
± latest date by which the
national standards
conflicting with the
EN have to be withdrawn (dow) 1997-06-01
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 appliances 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 specifications: in italic type;
Contents
Page
15 Insulation resistance and electric
23 Supply connection and external
27 Creepage distances, clearances and
Annexes 4
Trang 71 Scope
This clause of Part 1 is applicable except as follows:
1.1 Addition:
This standard applies to sabre saws and double blade
reciprocating saws intended to cut wood and similar
materials
2 Definitions
This clause of Part 1 is applicable except as follows:
2.2 Replacement:
18 normal load
For sabre saws and double blade reciprocating saws
intended to cut wood, the load obtained when the saw
is operated continuously the load 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
This clause of Part 1 is applicable except as follows:
4.10 Addition:
For tests carried out at normal load, the reciprocating
mechanism may be replaced by a rotating gear, so
that the saw can be loaded by means of a brake.
5 Rating
This clause of Part 1 is applicable
6 Classification
This clause of Part 1 is applicable
7 Marking
This clause of Part 1 is applicable except as follows:
7.1 Addition:
Sabre saws and double blade reciprocating saws
intended to cut wood shall be marked with:
± maximum cutting length in millimetres;
± number of reciprocations per minute under no-load conditions
NOTE The number of reciprocations under no-load conditions determined after the saw has been running idle for 10 min at rated voltage or at the upper limit of the rated voltage range.
7.13 Addition:
If the saw is fitted with a device which allows the
connection of external dust collection equipment, in
the instruction sheet instructions shall be given how to
connect such a device
8 Protection against electric shock
This clause of Part 1 is applicable
9 Starting
This clause of Part 1 is applicable
10 Input and current
This clause of Part 1 is applicable except as follows:
10.1 Modification:
This test is not made
10.2 Addition:
The measurement is made after the saw has been operated for 10 min
11 Heating
This clause of Part 1 is applicable except as follows:
11.5 The saw is operated for 30 min.
12 Leakage current
This clause of Part 1 is applicable
13 Environmental requirements
This clause of Part 1 is applicable except as follows:
13.1 Addition:
If saws are fitted with integral dust collection devices
or devices which allow the connection of external dust collection equipment, the test under working
conditions, orientation within the cabin and material to
be worked shall be in accordance with the following:
400 mm
overloading the tool
Depth of cut Blade to be extended beyond
thickness of material at all times Width of cut-off 10 mm
Tool bit/cutter/abrasive
New blade, at the start of the test period, as recommended by the manufacturer
Integral collection (if any)
Emptied during 7 minute rest time
Orientation Across the cabin with the airflow
from left to the right of the tool Test cycle 10 cuts in 5 minutes, with
a 7 minute rest time
(Total 12 minutes)
Test period 5 complete cycles (total 1 hour)
Trang 8Page 4
EN 50144-2-11 : 1996
14 Moisture resistance
This clause of Part 1 is applicable
15 Insulation resistance and electric
strength
This clause of Part 1 is applicable
16 Endurance
This clause of Part 1 is applicable
17 Abnormal operation
This clause of Part 1 is applicable
18 Mechanical hazards
This clause of Part 1 is applicable
19 Mechanical strength
This clause of Part 1 is applicable
20 Construction
This clause of Part 1 is applicable
21 Components
This clause of Part 1 is applicable
22 Internal wiring
This clause of Part 1 is applicable
23 Supply connection and external flexible cables and cords
This clause of Part 1 is applicable
24 Terminals and external conductors
This clause of Part 1 is applicable
25 Provision for earthing
This clause of Part 1 is applicable
26 Screws and connections
This clause of Part 1 is applicable
27 Creepage distances, clearances and distance through insulation
This clause of Part 1 is applicable
28 Resistance to heat, fire and tracking
This clause of Part 1 is applicable
29 Resistance to rusting
This clause of Part 1 is applicable
30 Radiation
This clause of Part 1 is applicable
Annexes
The annexes of Part 1 are applicable
Trang 9BSI 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 P.O Box 375, Milton Keynes MK14 6LL
Trang 10BSI
389 Chiswick High Road
London
W4 4AL
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BSI Ð British Standards Institution
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