SIST EN 60455-3-2:2004

• Abstract:

  Gives the requirements for quartz filled epoxy resinous compounds in the cured form for types EP-F-1 to EP-F-7. Other materials than quartz may be introduced later.

• Status: Published
• Publication Date: 31-Aug-2004
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: IZO - Insulating materials
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2004
• Due Date: 01-Sep-2004
• Completion Date: 01-Sep-2004
• Ref Project: EN 60455-3-2:2003 - Resin based reactive compounds used for electrical insulation - Part 3: Specifications for individual materials - Sheet 2: Quartz filled epoxy resinous compounds

• Replaces: SIST HD 307.3.2 S2:1998 - Specification for solventless polymerisable resinous compounds used for electrical insulation -- Part 3: Specifications for individual materials -- Sheet 2: Quartz filled epoxy resinous compounds
• Effective Date: 06-May-2014
• Refers: SIST EN 60455-2:2002 - Resin based reactive compounds used for electrical insulation -- Part 2: Methods of test
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 60455-2:2024 - Resin based reactive compounds used for electrical insulation - Part 2: Methods of test (IEC 60455-2:2023)
• Effective Date: 03-Feb-2026

SIST EN 60455-3-2:2004 is the Slovenian standard for quartz filled epoxy resinous compounds used for electrical insulation. It specifies the requirements for these compounds in the cured form for types EP-F-1 to EP-F-7, and it points users to IEC test methods for checking both uncured and cured properties. Engineers, buyers, quality managers and test labs use it to define a material type, agree test conditions and judge whether a supplied compound matches the specified class.

What does SIST EN 60455-3-2:2004 specify?

SIST EN 60455-3-2:2004 covers quartz filled epoxy resinous compounds for electrical insulation, focusing on the cured form of the material. The standard organizes the requirements around the material types EP-F-1 to EP-F-7, with additional checks for uncured material when a contract asks for them.

The document is arranged in four clauses and Annex ZA:

• Clause 1 - scope
• Clause 2 - normative references
• Clause 3 - requirements
• Clause 4 - special requirements
• Annex ZA - normative references to international publications and their European equivalents

In practice, this means the standard is a product specification sheet, not a general textbook on epoxy resins. It tells a buyer or manufacturer what performance profile to specify and what test standard to use to verify it.

What are the key requirements of SIST EN 60455-3-2:2004?

SIST EN 60455-3-2:2004 sets one formulation boundary, two groups of property checks, and a type-dependent property profile. The main practical task is to match the compound to the correct EP-F type and to verify it with the test methods named in IEC 60455-2.

Material coverage and composition

Clause 1 limits the sheet to quartz filled epoxy resinous compounds in cured form, for types EP-F-1 to EP-F-7. Clause 3 adds a filler-content requirement for compounds claiming compliance. For users, this means the product claim is not just about generic epoxy resin - it is tied to a quartz-filled cured system and a named type.

Uncured-form checks when a contract calls for them

Clause 4 and Table 1 cover optional tests for the uncured material: viscosity, epoxy equivalent, shelf life, pot life, exothermic temperature peak and total shrinkage. These are used when procurement or qualification needs to control processing behavior before cure. In practice, the contract should state which of these checks are required.

Cured-form property set

Clause 3 and Table 2 define the main acceptance properties for the cured compound. The property set includes density, flexural strength, tensile strength, impact strength, glass transition temperature, temperature of deflection under load, flammability, water absorption, volume resistivity, dissipation factor, permittivity, electric strength, tracking resistance, and thermal endurance. This is the core checklist for material approval, incoming inspection and supplier qualification.

Type-specific performance levels

Table 2 differentiates EP-F-1 through EP-F-7 by their property levels. The types are not identical grades - they are separate material classes with different mechanical, thermal and electrical profiles. That matters when selecting a compound for hotter service conditions, higher mechanical loading or tighter electrical performance.

Test methods and conditions

Table 2 refers to IEC 60455-2 for the test methods, and it also fixes the relevant test conditions for some electrical properties. For the reader, this means results are only comparable when the same method and test conditions are used.

Suitability at other temperatures

Clause 3 notes that materials intended for lower or higher temperature conditions may need additional tests to establish suitability. In practice, a standard qualification is not always enough if the application runs outside the usual temperature range.

What terms does SIST EN 60455-3-2:2004 define?

• Cured form - the hardened state of the compound, which is the state covered by the main requirements in Table 2.
• Uncured form - the material before hardening, covered in Table 1 when special properties are specified in the purchase contract.
• EP-F-1 to EP-F-7 - the seven material types covered by the sheet, each with its own property profile.
• Shelf life - the storage period during which the uncured compound remains usable.
• Pot life - the working time after mixing before the uncured compound becomes unfit for processing.
• Exothermic temperature peak - the highest temperature reached during curing because of reaction heat.
• Temperature of deflection under load - the temperature at which a loaded specimen begins to deform enough to show heat resistance.
• Tracking resistance - the ability of the insulation surface to resist conductive paths under electrical stress and contamination.

Who uses SIST EN 60455-3-2:2004?

SIST EN 60455-3-2:2004 is used by compound manufacturers, electrical equipment makers, testing laboratories and procurement or quality teams that specify or verify insulating materials. It is useful in product development, supplier approval, incoming inspection and contract specification because it links a material type to defined test methods and property levels. Engineers use it to choose an EP-F type; buyers use it to write material requirements; labs use it to report comparable test results.

What changed in SIST EN 60455-3-2:2004 from the previous edition?

SIST EN 60455-3-2:2004 replaces HD 307.3.2 S1:1997. The foreword states that references to HD 307.2 S1:1986 were updated to EN 60455-2:1999, and a new product, EP-F-7, was introduced. It is also described as a technical revision of the earlier IEC edition.

Which standards are used with SIST EN 60455-3-2:2004?

Publication	What it contributes
IEC 60455-2:1998	The test methods used for the property checks in Tables 1 and 2.
EN 60455-2:1999	The European publication corresponding to IEC 60455-2, referenced in Annex ZA.
IEC 60455-1	The series part for definitions and general requirements.
IEC 60455-3	The series part for specifications for individual materials, which includes this sheet.

What does the SIST EN 60455-3-2:2004 document contain?

The document contains a scope clause, one normative reference clause, one requirements clause and one special-requirements clause. It uses Table 1 for uncured-form tests and Table 2 for cured-form requirements across the seven EP-F types. Annex ZA gives the normative reference mapping to the corresponding European publication.

It also includes notes that help with practical use, such as the filler-content guidance and the reminder that materials for different temperature ranges may need extra testing.

SLOVENSKI SIST EN 60455-3-2:2004

STANDARD
september 2004
Reaktivne zmesi na osnovi smole, ki se uporabljajo za električno izolacijo - 3.
del: Specifikacije za posamezne materiale - 2. list: S kremenovo moko
polnjene zmesi iz epoksidne smole (IEC 60455-3-2:2003)
Resin based reactive compounds used for electrical insulation - Part 3:
Specifications for individual materials - Sheet 2: Quartz filled epoxy resinous
compounds (IEC 60455-3-2:2003)
ICS 29.035.20 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60455-3-2
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2003
ICS 29.035.01 Supersedes HD 307.3.2 S2:1997

English version
Resin based reactive compounds used for electrical insulation
Part 3: Specifications for individual materials
Sheet 2: Quartz filled epoxy resinous compounds
(IEC 60455-3-2:2003)
Composés réactifs à base de résines Reaktionsharzmassen für die
utilisés comme isolants électriques Elektroisolierung
Partie 3: Spécifications pour matériaux Teil 3: Anforderungen an einzelne
particuliers Werkstoffe
Feuille 2: Composés résineux époxydes Blatt 2: Quarzmehlgefüllte
chargés de silice Epoxidharzmassen
(CEI 60455-3-2:2003) (IEC 60455-3-2:2003)

This European Standard was approved by CENELEC on 2003-06-01. 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

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60455-3-2:2003 E
Foreword
The text of document 15C/1462/FDIS, future edition 2 of IEC 60455-3-2, prepared by SC 15C,
Specifications, of IEC TC 15, Insulating materials, was submitted to the IEC-CENELEC parallel vote
and was approved by CENELEC as EN 60455-3-2 on 2003-06-01.

This European Standard replaces HD 307.3.2 S1:1997.

References to HD 307.2 S1:1986 have been updated to EN 60455-2:1999 and a new product, EP-F-7,
has been introduced.
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) 2004-03-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-06-01

Annexes designated "normative" are part of the body of the standard.
In this standard, annex ZA is normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60455-3-2:2003 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60455-3-2:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, 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 European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60455-2 1998 Resin based reactive compounds used EN 60455-2 1999
for electrical insulation
Part 2: Methods of test
NORME CEI
INTERNATIONALE IEC
60455-3-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2003-04
Composés réactifs à base de résines
utilisés comme isolants électriques –
Partie 3:
Spécifications pour matériaux particuliers –
Feuille 2:
Composés résineux époxydes chargés
de silice
Resin based reactive compounds
used for electrical insulation –
Part 3:
Specifications for individual materials –
Sheet 2:
Quartz filled epoxy resinous compounds
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Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
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microfilms, sans l'accord écrit de l'éditeur. the publisher.
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CODE PRIX
E
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60455-3-2  IEC:2003 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
RESIN BASED REACTIVE COMPOUNDS USED
FOR ELECTRICAL INSULATION –
Part 3: Specifications for individual materials –
Sheet 2: Quartz filled epoxy resinous compounds
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the ele
...