IEC 61212-3-3:2006

Insulating materials - Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes - Part 3: Specifications for individual materials - Sheet 3: Round laminated moulded rods

IEC 61212-3-3:2006 gives requirements for industrial rigid round laminated moulded rods for electrical purposes, based on different resins and different reinforcements. The main changes from the previous edition are as follows: added application use and safety statements. Reformatted document to bring it up to current IEC document format. Type EP GC 43 has been added.

Matériaux isolants - Tubes et barres industriels rigides, ronds, stratifiés, à base de résines thermodurcissables, à usages électriques - Partie 3: Spécifications pour matériaux particuliers - Feuille 3: Barres rondes, stratifiées, moulées

La CEI 61212-3-3:2006 donne les exigences relatives aux barres industrielles rigides rondes, stratifiées, moulées, à usages électriques, à base de différentes résines et de différents matériaux de renfort. Les modifications principales apportées par rapport à l'édition précédente sont les suivantes: instructions supplémentaires relatives à l'utilisation et à la sécurité de l'application. Reformatage du document pour correspondre au format de document actuel de la CEI. Ajout du Type EP GC 43.

General Information

• Status: Published
• Publication Date: 14-Aug-2006
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: TC 15 - Solid electrical insulating materials
• Drafting Committee: WG 6 - TC 15/WG 6
• Current Stage: PPUB - Publication issued
• Start Date: 15-Nov-2006
• Completion Date: 15-Aug-2006

Relations

• Merged From: IEC 61212-3-3/FRAGf - IEC 60994
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61212-3-3
®
Edition 2.0 2006-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Insulating materials – Industrial rigid round laminated tubes and rods based on
thermosetting resins for electrical purposes –
Part 3: Specifications for individual materials – Sheet 3: Round laminated
moulded rods

Matériaux isolants – Tubes et barres industriels rigides, ronds, stratifiés, à base
de résines thermodurcissables, à usages électriques –
Partie 3: Spécifications pour matériaux particuliers – Feuille 3: Barres rondes,
stratifiées, moulées

IEC 61212-3-3:2006

---------------------- Page: 1 ----------------------
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IEC 61212-3-3
®
Edition 2.0 2006-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Insulating materials – Industrial rigid round laminated tubes and rods based on
thermosetting resins for electrical purposes –
Part 3: Specifications for individual materials – Sheet 3: Round laminated
moulded rods

Matériaux isolants – Tubes et barres industriels rigides, ronds, stratifiés, à base
de résines thermodurcissables, à usages électriques –
Partie 3: Spécifications pour matériaux particuliers – Feuille 3: Barres rondes,
stratifiées, moulées

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
J
CODE PRIX
ICS 29.035.01 ISBN 978-2-88910-447-5
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – 61212-3-3 © IEC:2006
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 Terms and definitions .5
4 Designations and abbreviations .6
4.1 General .6
4.2 Designation .6
4.3 Abbreviations .6
5 Requirements .6

Table 1 – Types of round moulded rods .7
Table 2 – Permissible deviation from nominal diameter of round moulded rods . 8
Table 3 – Departure from straightness for round moulded rods .8
Table 4 – Properties of round moulded rods.9

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61212-3-3 © IEC:2006 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________

INSULATING MATERIALS –
INDUSTRIAL RIGID ROUND LAMINATED TUBES AND RODS
BASED ON THERMOSETTING RESINS FOR ELECTRICAL PURPOSES –

Part 3: Specifications for individual materials –
Sheet 3: Round laminated moulded rods


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61212-3-3 has been prepared by IEC technical committee 15:
Standards on specifications for electrical insulating materials.
This second edition cancels and replaces the first edition published in 1995 and constitutes a
technical revision. The main changes from the previous edition are as follows: added
application use and safety statements. Reformatted document to bring it up to current IEC
document format. Type EP GC 43 has been added.

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– 4 – 61212-3-3 © IEC:2006
This bilingual version, published in 2009-09, corresponds to the English version.
The text of this standard is based on the following documents:
FDIS Report on voting
15/329/FDIS 15/344/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
The French version of this standard has not been voted upon.
A list of all parts of the IEC 61212 series, under the general title Insulating materials –
Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical
purposes, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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61212-3-3 © IEC:2006 – 5 –
INSULATING MATERIALS –
INDUSTRIAL RIGID ROUND LAMINATED TUBES AND RODS
BASED ON THERMOSETTING RESINS FOR ELECTRICAL PURPOSES –

Part 3: Specifications for individual materials –
Sheet 3: Round laminated moulded rods



1 Scope
This part of IEC 61212-3 gives requirements for industrial rigid round laminated moulded rods
for electrical purposes, based on different resins and different reinforcements.
Applications and distinguishing properties are given in Table 1.
Materials which conform to this specification meet established levels of performance.
However, the selection of a material by a user for a specific application should be based on
the actual requirements necessary for adequate performance in that application and not
based on this specification alone.
Safety Warning:
It is the responsibility of the user of the methods contained or referred to in this document to
ensure that they are used in a safe manner.
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.
IEC 61212-1, Insulating materials – Industrial rigid round laminated tubes and rods based on
thermosetting resins for electrical purposes – Part 1: Definitions, designations and general
requirements
IEC 61212-2:2006, Insulating materials – Industrial rigid round laminated tubes and rods
based on thermosetting resins for electrical purposes – Part 2: Methods of test
ISO 472, Plastics – Vocabulary
3 Terms and definitions
For the purposes of this document, the following modified definition, which is taken from
ISO 472, applies:
3.1
round laminated moulded rod (as applied to thermosets)
rod formed by rolling impregnated layers of material on a mandrel, removing the mandrel,
curing in a cylindrical mould under heat and pressure, and grinding to size
[ISO 472, MOD]

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– 6 – 61212-3-3 © IEC:2006
4 Designations and abbreviations
4.1 General
The moulded rods covered by this standard are classified into types which differ in the resin
and reinforcement used, the method of manufacture, and their distinguishing properties.
4.2 Designation
Individual types are designated by:
– a two-letter abbreviation denoting the resin;
– a second two-letter abbreviation, denoting the reinforcement;
– a serial number of two digits, the first digit denoting the form of the material,
a “4” indicates moulded rods,
and, a second digit denoting sub-grades of the same type.
The abbreviations are given in 4.3.
The complete designation of the moulded rod is denoted by:
– description: Moulded rod;
– number of the IEC standard: IEC 61212–3–3;
– designation of the individual type;
– dimensions (in millimetres of the moulded rod: diameter x length)
– a letter designating the finish on the external diameter of the moulded rod:
"A" designating rods in the "as produced" condition;
"B" designating rods in ground or turned condition.
EXAMPLE:
Moulded rod, IEC 61212-3-3 – EP CC 41 – 25x1000 – A
4.3 Abbreviations
Types of resin Types of reinforcement
EP Epoxy (epoxide) CC Woven cotton cloth
PF Phenolic GC Woven glass cloth
SI Silicone CP Cellulosic paper

5 Requirements
In addition to the general requirements given in IEC 61212-1, the moulded rods shall comply
with the additional requirements given in Tables 2a, 2b, 3, and 4, with the exception of the
length of rod supplied, which shall be subject to agreement between buyer and seller.

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61212-3-3 © IEC:2006 – 7 –
Table 1 – Types of round moulded rods
Resin Reinforce- Serial number
a
Applications and distinguishing characteristics
ment
Mechanical, electrical and electronic applications. Good resistance to
CC 41

b
tracking. Fine weave .
Mechanical and electrical applications. High mechanical strength at
41 moderate temperatures. Good stability of electrical properties when exposed
EP
to high relative humidity.
GC
Similar to EP GC 41, but with high mechanical strength at elevated
42
temperature.
43 Similar to EP GC 41, but with improved flame resistance.
b
41
Mechanical and electrical applications. Fine weave .
b
CC
42
Mechanical and electrical applications. Coarse weave .
b
43
Mechanical and electrical applications. Very coarse weave .
PF
Mechanical and electrical applications. Good stability of electrical properties
41
when exposed to high relative humidity.
CP
42 Similar to PF CP 41, but with lower mechanical and electrical properties.
43 Mechanical applications and low voltage electrical applications.
Mechanical, electrical and electronic applications. Good stability of electrical
SI GC 41
properties at elevated temperatures.
a
It should not be inferred from the contents of Table 1 that moulded rods of any particular type are
necessarily unsuitable for applications other than those listed for them, or that specific moulded rods will be
suitable for all applications within the wide description given.
b
 Fabric weaves of type CC reinforcements:
Mass per unit area Thread count
2 –1
g/m cm
Very coarse weave > 200 < 18
Coarse weave > 130 18 to 29
Fine weave
≤ 130 ≥ 30
These values are only for information. They are not to be considered as specification values. In general, the finer
weave materials have better machining characteristics.

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– 8 – 61212-3-3 © IEC:2006
Tables 2 – Permissible deviation from nominal diameter
of round moulded rods
Table 2a – Permissible deviation from nominal diameter
of round moulded rods in the "as moulded" condition
a
Maximum deviation
± mm
Nominal diameter D
Type
mm
PF CP
All other types
EP CC
≤ 10 0,3 0,4
0,3 0,4
10 < D ≤ 20
0,4 0,5
20 < D ≤ 30
0,4 0,5
30 < D ≤ 50
0,4 0,7
50 < D ≤ 75
0,5 1,0
75 < D ≤ 100
0,6 1,5
100 < D ≤ 150
0,7 1,7
150 < D ≤ 200
0,75 2,0
200 < D ≤ 300
0,8 2,2
300 < D ≤ 500
1,0 2,5
> 500
Test method: see 4.2 of IEC 61212-2.

a
If a unilateral tolerance is agreed between purchaser and supplier, the tolerance may not be greater than

twice the value given in the table.

Table 2b – Permissible deviation from nominal diameter
of round moulded rods in ground or turned condition
Nominal diameter D
Maximum deviation
± mm
mm
≤ 25 0,15
0,25
25 < D ≤ 50
0,30
50 < D ≤ 75
0,35
75 < D ≤ 100
0,45
100 < D ≤ 125
0,50
> 125
Test method: see 4.2 of IEC 61212-2.

Table 3 – Departure from straightness for round moulded rods
2
For all rods 3,5 L mm
When measured in accordance with 4.5 of IEC 61212-2, the
departure from straightness of any rod shall not exceed the
appropriate limiting value given above, w
...