SIST EN 50307:2004

SLOVENSKI STANDARD
SIST EN 50307:2004
01-januar-2004
Lead and lead alloys - Lead and lead alloy sheaths and sleeves of electric cables
Lead and lead alloys - Lead and lead alloy sheaths and sleeves of electric cables
Blei und Bleilegierungen - Mäntel und Metallgehäuse von Kabeln aus Blei und
Bleilegierungen
Plomb et alliages de plomb - Gaines et manchons en plomb et alliage de plomb des
câbles électriques
Ta slovenski standard je istoveten z: EN 50307:2002
ICS:
29.060.20 Kabli Cables
77.150.60 6YLQþHQLFLQNRYLLQNRVLWURYL Lead, zinc and tin products
L]GHONL
SIST EN 50307:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50307:2004

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SIST EN 50307:2004
EUROPEAN STANDARD EN 50307
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2002

ICS 77.150.60


English version


Lead and lead alloys –
Lead and lead alloy sheaths and sleeves
of electric cables


Plomb et alliages de plomb –  Blei und Bleilegierungen –
Gaines et manchons en plomb et alliage Mäntel und Metallgehäuse von Kabeln
de plomb des câbles électriques aus Blei und Bleilegierungen






This European Standard was approved by CENELEC on 2002-10-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, 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


© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50307:2002 E

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SIST EN 50307:2004
EN 50307:2002 - 2 -
Foreword

This European Standard was prepared by the Technical Committee CENELEC TC 20, Electric
cables.

The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50307 on 2002-10-01.

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) 2003-10-01

- latest date by which the national standards conflicting
 with the EN have to be withdrawn (dow) 2005-10-01

Users of this European Standard should note that it covers the chemical composition of lead
and lead alloy cable sheaths or sleeves after application or forming. CEN has issued a
European Standard (EN 12548) to cover lead and lead alloy ingots for use in the manufacture
of cable sheaths or sleeves. The compositional requirements therein apply to the material prior
to manufacture of the cable sheaths or sleeves and melting loss of some of the alloying
elements may occur during processing.

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, Annex A and Annex B are informative.
__________

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Contents

1 Scope. 4
2 Normative references. 4
3 Definitions . 4
4 Designation . 4
5 Ordering information for sheaths and sleeves. 4
6 Requirements. 5
7 Sampling. 5
8 Analysis methods . 5
9 Re-test procedure . 5
10 Rounding of analysis results . 6
11 Inspection documentation for electric cable sheathing and sleeves . 6
12 Marking and labelling of sheathing and sleeves . 7

Annex A (informative) Cross-references between alloy designations . 10
Annex B (informative) Use of lead and lead alloys for cable applications . 11

Table 1 - Chemical composition of lead and lead alloys in electric cable sheaths
and sleeves. 8
Table A.1. 10
Table B.1 - End-use application - Installation type. 11
Table B.2 - End-use application - Functional requirements . 12

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1 Scope

This European Standard specifies the designations, chemical compositions and other
requirements for lead and lead alloy electric cable sheaths and sleeves.


2 Normative references

This European Standard incorporates by dated and undated references, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions
of any of these publications apply to this CENELEC Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).

EN 12548 Lead and lead alloys - Lead alloy ingots for electric cable sheathing and for
sleeves


3 Definitions

For the purpose of this standard the following definitions apply.

3.1
electric cable sheath
uniform and continuous tubular metallic covering, generally extruded and generally of a circular
cross section, encasing one or more insulated electrical conductors in order to contain an
impregnant if present, mechanically protect the insulation, to prevent the ingress of moisture
and to act as an electrical screen

3.2
sleeve
short length of sheath which may be used in the jointing of some types of electric cables


4 Designation

Lead and lead alloys to this standard are designated by an alphanumeric system, see Table 1.

The first letter P signifies lead and lead alloys, the second letter K signifies cables. The three
numbers indicate a specific and unique composition for cable sheaths and sleeves, the third
letter S signifies sheath (or sleeve).


5 Ordering information for sheaths and sleeves

In order to facilitate the enquiry, order and confirmation of order procedures between the
purchaser and supplier for the supply of lead and lead alloy cable sheaths or sleeves, the
purchaser shall state on the enquiry and order the following information:

a) the denomination (e.g. sheath or sleeves);
b) the number of this European Standard;
c) the material designation (see Table 1);

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SIST EN 50307:2004
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d) whether chemical analysis tests are required;
e) whether a certificate of analysis tests or a declaration of conformity is required
(see Clause 11);
f) whether some form of identifier is required for sleeves (see Clause 11);
g) in the case of sleeves, the number, length and dimensions.

NOTE  The tolerances on length, and other dimensions are to be agreed between the purchaser and the supplier at
the time of enquiry or ordering.


6 Requirements

6.1 Chemical composition of sheaths and sleeves

The chemical composition of the sheaths or sleeves shall conform to the requirements given in
Table 1.

6.2 Freedom from defects

The sheaths and sleeves shall be free of any defects, damage or contamination liable to
adversely affect their intended purpose or service life.


7 Sampling

Sampling of sheaths or sleeves for chemical analysis shall be in accordance with the
requirements of the product specification.


8 Analysis methods

When analysis is carried out to verify conformity of sheaths and sleeves to this standard the
analytical methods used shall be at the discretion of the supplier.

In cases of dispute concerning the results of analysis and pending the publication of a suitable
European Standard containing analytical methods (in preparation by CEN), the methods of
analysis shall be agreed between the disputing parties.

For expression of the results of chemical analysis the rounding rules given in Clause 10 shall be
used.


9 Re-test procedure

Should any sample fail to meet the specified requirements in 6.1, two further samples shall be
taken from the same sheath or batch of sleeves and subjected to the same test or tests in
which the original sample failed. Should both additional test samples pass the test, all the
cables or sleeves in the batch from which they were taken shall be regarded as complying with
the requirements of this specification. Should either of them fail, the batch from which the
samples were representative shall be regarded as failing to comply. Further re-sampling and
testing shall be subject to agreement between the supplier and customer.

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10 Rounding of analysis results

For the purposes of determining conformity to the compositional requirements of this standard,
an observed or a calculated value obtained during analysis shall be rounded in accordance with
the following procedure. It shall be rounded in one
...