HD 21.2 S3:1997/A1:2002
(Amendment)Cables of rated voltages up to and including 450/750 V and having thermoplastic insulation - Part 2: Test methods
Cables of rated voltages up to and including 450/750 V and having thermoplastic insulation - Part 2: Test methods
Superseded by EN 50395:2005 & EN 50396:2005
Starkstromleitungen mit thermoplastischer Isolierhülle für Nennspannungen bis 450/750 V - Teil 2: Prüfverfahren
Conducteurs et câbles isolés avec des matériaux thermoplastiques de tension assignée au plus égale à 450/750 V - Partie 2: Méthodes d'essai
Cables of rated voltages up to and including 450/750 V and having thermoplastic insulation - Part 2: Test methods
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST HD 21.2 S3:1998/A1:2003
01-februar-2003
Cables of rated voltages up to and including 450/750 V and having thermoplastic
insulation - Part 2: Test methods
Cables of rated voltages up to and including 450/750 V and having thermoplastic
insulation -- Part 2: Test methods
Starkstromleitungen mit thermoplastischer Isolierhlle fr Nennspannungen bis 450/750 V -
- Teil 2: Prfverfahren
Conducteurs et cbles isols avec des matriaux thermoplastiques de tension assigne au
plus gale 450/750 V -- Partie 2: Mthodes d'essai
Ta slovenski standard je istoveten z: HD 21.2 S3:1997/A1:2002
ICS:
29.060.20 Kabli Cables
SIST HD 21.2 S3:1998/A1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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HARMONIZATION DOCUMENT HD 21.2 S3/A1
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT November 2002
ICS 29.060.20
English version
Cables of rated voltages up to and including 450/750 V
and having thermoplastic insulation
Part 2: Test methods
Conducteurs et câbles isolés Starkstromleitungen mit thermoplastischer
avec des matériaux thermoplastiques Isolierhülle für Nennspannungen
de tension assignée au plus égale bis 450/750 V
à 450/750 V Teil 2: Prüfverfahren
Partie 2: Méthodes d'essai
This amendment A1 modifies the Harmonization Document HD 21.2 S3:1997; it was approved by
CENELEC on 2002-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal
Regulations which stipulate the conditions for implementation of this amendment on a national level.
Up-to-date lists and bibliographical references concerning such national implementation may be obtained on
application to the Central Secretariat or to any CENELEC member.
This amendment exists in three official versions (English, French, German).
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. HD 21.2 S3:1997/A1:2002 E
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HD 21.2 S3:1997/A1:2002 - 2 -
Foreword
This amendment to the Harmonization Document HD 21.2 S3:1997 was prepared by
the Technical Committee CENELEC TC 20, Electric cables.
The text of the draft was submitted to the Unique Acceptance Procedure and was
approved by CENELEC as amendment A1 to HD 21.2 S3:1997 on 2002-09-01.
The following dates were fixed:
- latest date by which the existence of the amendment
has to be announced at national level (doa) 2003-03-01
- latest date by which the amendment has to be
implemented at national level by publication of an
identical national standard or by endorsement (dop) 2003-09-01
- latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2003-09-01
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- 3 - HD 21.2 S3:1997/A1:2002
Title
Amend the title to read:
Cables of rated voltages up to and including 450/750 V and having thermoplastic
insulation - Part 2: Test methods
Subclause 1.1
Amend paragraph 1 to read:
HD 21 applies to rigid and flexible cables with insulation and sheath, if any, based on
thermoplastic materials, of rated voltages U /U up to and including 450/750 V used in
o
power installations.
In paragraph 2, line 2:
Delete “HD 405.1 and EN 60811” and insert “the common test methods for cables
given in EN 50265, EN 50267, EN 50268 and EN 60811.”
Subclause 2.2
Delete the second paragraph and insert the following:
“A voltage shall be applied between conductor(s) and groups of conductors in such a
way that the insulation on each core is tested against all adjacent cores. The voltage
shall be increased gradually to the specified value on each occasion.”
Delete the fourth paragraph and insert the following:
A voltage shall be applied between conductor(s) and groups of conductors in such a
way that the insulation on each core is tested against all adjacent cores and the
metallic layer. The voltage shall be increased gradually to the specified value on each
occasion.”
Subclause 2.3
Amend the start of paragraph 3 to read:
In the case of flat non-sheathed cord, and unless otherwise indicated in the particular
specification, a short cut ….
Subclause 2.5
In paragraph 1, at the end of the third sentence, add:
unless specified in the particular specification.
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HD 21.2 S3:1997/A1:2002 - 4 -
Subclause 2.8
Add new subclause as follows:
2.8 Surface resistance of sheath
When specified in the particular part of HD 21 this test shall be carried out on
cables with sheaths. It shall be carried out on three samples of complete cable,
each about 250 mm in length.
The sheath of each of the samples shall be cleaned with spirit, and two
electrodes consisting of wire helices applied at a distance of (100 ± 2) mm from
each other. For the helices, copper wire of between 0,2 mm and 0,6 mm diameter
shall be used. After the wire has been applied, the surface of the sheath shall
again be thoroughly cleaned between the electrodes.
The samples shall then be conditioned at a temperature of (20 ± 2) °C, and a
relative humidity of (65 ± 5) %, for 24 hours.
Immediately after removal from the conditioning chamber, a d.c. voltage of
between 100 V and 500 V shall
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