Conductor cars

This European Standard applies to conductor cars which are used for driving (travelling) on conductors, shield wires or shield wires with integrated communication systems of overhead transmission lines.

Leitungsfahrzeuge

Nacelles suspendues

Vozički za delo na nadzemnih vodih

General Information

Status
Published
Publication Date
09-Mar-2004
Current Stage
6060 - Document made available
Due Date
10-Mar-2004
Completion Date
10-Mar-2004

RELATIONS

Effective Date
10-Apr-2018

Buy Standard

Standard
EN 50374:2004
English language
11 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI SIST EN 50374:2004
STANDARD
september 2004
Vozički za delo na nadzemnih vodih
Conductor cars
ICS 43.120 Referenčna številka
SIST EN 50374:2004(en)

© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD EN 50374
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2004
ICS 43.120
English version
Conductor cars
Nacelles suspendues Leitungsfahrzeuge

This European Standard was approved by CENELEC on 2004-02-01. 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.
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.

Ref. No. EN 50374:2004 E
---------------------- Page: 2 ----------------------
EN 50374:2004 - 2 -
Contents
Page

Foreword ................................................................................................................................................. 3

1 Scope ................................................................................................................................................ 4

2 Normative references ........................................................................................................................ 4

3 Definitions .......................................................................................................................................... 5

4 Requirements .................................................................................................................................... 5

4.1 Mechanical requirements ........................................................................................................ 5

4.2 Dielectric requirements ........................................................................................................... 9

5 Tests ................................................................................................................................................. 9

5.1 Proof of design......................................................................................................................... 9

5.2 Tests for personnel protection ............................................................................................... 10

5.3 Test set-up............................................................................................................................. 10

5.4 Floor plate and travelling axles .............................................................................................. 10

5.5 Protection against fall............................................................................................................. 10

5.6 Brakes and locking devices ................................................................................................... 10

5.7 Manual handling test .............................................................................................................. 11

5.8 Mounting attachments for full body harnesses ...................................................................... 11

5.9 Mounting attachments for traction ropes................................................................................ 11

5.10 Mounting attachments for pulling up / removing .................................................................... 11

5.11 Drives..................................................................................................................................... 11

5.12 Operating devices .................................................................................................................. 11

5.13 Dielectric requirements .......................................................................................................... 11

---------------------- Page: 3 ----------------------
- 3 - EN 50374:2004
Foreword

This European Standard was prepared by CENELEC BTWG 93-1, Conductors cars. The text of the draft

was submitted to formal vote and was approved by CENELEC as EN 50374 on 2004-02-01.

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) 2005-02-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-02-01
__________
---------------------- Page: 4 ----------------------
EN 50374:2004 - 4 -
1 Scope

This European Standard applies to conductor cars which are used for driving (travelling) on conductors,

shield wires or shield wires with integrated communication systems of overhead transmission lines.

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.
EN 292-2 Safety of machinery – Basic concepts, general principles for design
Part 2: Technical principles (ISO 12100-2)
EN 354 Personal protective equipment against falls from a height - Lanyards
EN 1011-1 Welding – recommendations for welding of metallic materials
Part 1: General guidance for arc welding
EN 1011-2 Welding – Recommendations for welding of metallic materials
Part 2: Arc welding of ferritic steels
EN 1011-3 Welding – Recommendations for welding of metallic materials
Part 3: Welding of stainless steels
EN 1011-4 Welding – Recommendations for welding of metallic materials
Part 4: Arc welding of aluminium and aluminium alloys
EN 1050 Safety of machinery - Principles of risk assessment (ISO 14121)

EN 1708-1 Welding – Basic weld joint details in steel - Part 1: Pressurised components

EN 1712 Non-destructive examination of welds - Ultrasonic examination of welded joints -

Acceptance levels

EN 30042 Arc-welded joints in aluminium and its weldable alloys – guidance on quality levels for

imperfections
EN 60204-1 Safety of machinery - Electrical equipment of machines
Part 1: General requirements (IEC 60204-1)

Conductor cars are covered by the Directive 98/37/EC of the European Parliament and the Council of

22 June 1998 on the approximation of the laws of the Member States relating to machinery. In the case of

conductor cars which are also used for lifting persons, the cars are devices covered by Annex IV of the

Directive.

Every manufacturer or his authorised representative established in the Community shall prove by a

conformity assessment procedure, that his conductor car complies with the requirements of the Directive.

Where this standard covers one or more of the essential safety requirements of the Directive, conductor

cars constructed in accordance with this standard shall be presumed to comply with the relevant essential

requirements.
---------------------- Page: 5 ----------------------
- 5 - EN 50374:2004
3 Definitions
3.1
conductor cars

conductor cars covered by this standard are devices designed to be used as moveable workplaces on

overhead lines suspended by conductors or shield wires and which are moved manually, by pulling ropes

or built-in-traction.

In addition conductor cars may be designed to incorporate the raising of persons to the work position

3.2
brake
the brake is used for slowing down the conductor car to a standstill
3.3
locking device

the locking device is used for fixing the conductor car at a position on the conductor or shield wire

3.4
conductors (IEC 466-01-15)

a wire or combination of wires not insulated from one another, suitable for carrying an electric current.

The conductors are strung between two supports of overhead lines. They may be arranged as a single

conductor only or as a conductor bundle
3.5 Tests
3.5.1
type test (IEC 151-16-16)
conformity test made on one or more items representative of the production
3.5.2
routine test (IEC 151-16-17)

a periodical test defined by the manufacturer to which each individual device is subjected after

manufacture by the user to ascertain that it complies with certain criteria
3.6
permissible load

the permissible load is the maximum load defined by the designer with which the conductor car may be

loaded. The permissible load does not include the weight of the car
4 Requirements
4.1 Mechanical requirements

If conductor cars are designed to raise or lower persons a suitable safety factor shall be assigned, this is

usually double.
4.1.1 Frame

Frameparts which are relevant for safety shall have a calculated safety factor of at least three times the

stresses which may occur during the most unfavourable using condition with permissible load.

All materials have unique physical properties and will behave in different ways depending on the

conditions to which they are exposed. Therefore consideration should be given to raising of the safety

factor for special materials.
---------------------- Page: 6 ----------------------
EN 50374:2004 - 6 -

In case of emergency, i. e. if conductor car wheels inadvertently become detached from conductor, the

safety factor may be different than under normal using conditions.

The welding shall be carried out regarding the following European Standards e. g. EN 1011-1, EN 1011-2,

EN 1011-3 and EN 1011-4.

The welding shall at least meet the evaluation category BS-AL in accordance with EN 30042, Arc-welded

joints in aluminium and its weldable alloys - Guidance on quality levels for imperfections.

Other materials may be used if they fulfil the above mentioned requirements.
4.1.2 Chassis

The chassis must be equipped with a device which protects the car from unintended tilting or falling under

all operating and emergency conditions.

Conductor cars with built-in-traction shall be designed for a maximum speed of 6 km/h.

4.1.3 Brakes and locking device

4.1.3.1 Conductor cars shall be equipped with a brake and two locking devices independent from each

other. The brake can also work as a locking device. The brake and the locking device shall be rated in

accordance with 5.6.

4.1.3.2 The locking device shall fasten the conductor car directly to the conductor under all conditions.

In case of failure of the brake the locking device shall take over the function of the brake.

Locking devices of conductor cars shall affect at least two axles independent from each other.

4.1.3.3 For horizontally arranged conductors the brake shall have an effect on both conductors equally.

4.1.3.4 The lo
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.