HD 307.3.11 S1:1990
(Main)Specification for solventless polymerisable resinous compounds used for electrical insulation - Part 3: Specifications for individual materials - Sheet 11: Epoxy resin-based coating powders
Specification for solventless polymerisable resinous compounds used for electrical insulation - Part 3: Specifications for individual materials - Sheet 11: Epoxy resin-based coating powders
Contains the general and special requirements for thermosetting epoxy resin-based coating powders.
Bestimmung für lösemittelfreie härtbare Reaktionsharzmassen für die Elektroisolierung - Teil 3: Anforderungen an einzelne Werkstoffe - Blatt 11: Beschichtungspulver auf Basis von Epoxidharz
Spécification relative aux composés résineux polymérisables sans solvant utilisés comme isolants électriques - Partie 3: Spécifications pour les matériaux particuliers - Feuille 11: Poudres de revêtement à base de résines époxydes
Cette feuille est consacrée aux prescriptions générales et particulières applicables aux poudres à base de résines époxydes thermodurcissables.
Specification for solventless polymerisable resinous compounds used for electrical insulation - Part 3: Specifications for individual materials - Sheet 5: Epoxy resin-based coatin powders (IEC 60455-3-11:1988)
General Information
- Status
- Published
- Publication Date
- 13-Dec-1990
- Withdrawal Date
- 30-Nov-1991
- Technical Committee
- CLC/SR 15 - Insulating materials
- Drafting Committee
- IEC/TC 15 - IEC_TC_15
- Parallel Committee
- IEC/SC 15C - IEC_SC_15C
- Current Stage
- 6060 - Document made available - Publishing
- Start Date
- 14-Dec-1990
- Completion Date
- 14-Dec-1990
Relations
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
Overview
HD 307.3.11 S1:1990 / IEC 455-3-11 specifies general and special requirements for thermosetting epoxy resin‑based coating powders used as electrical insulation. It covers materials applied by fluidized bed, powder spray and electrostatic coating processes. The sheet defines product types, test requirements, conditions of supply and thermal endurance expectations for epoxy powder coatings used on electrical equipment.
Key topics and requirements
- Product classification: three types are specified and designated as IEC 455-3/11-EP-1 (rigid), EP-2 (general-purpose, semi‑flexible) and EP-3 (flexible).
- Performance focus:
- EP-1: high scratch hardness and superior cut‑through resistance.
- EP-2: medium‑rigid, general purpose.
- EP-3: flexibility, high impact strength and adhesion to metal.
- Electrical and mechanical properties (representative requirements in the standard):
- High dielectric strength (specified kV/mm level for test specimens).
- Volume resistivity after water immersion on the order of 10^6 Ω·cm.
- Resistance to tracking (CTI) and solvent vapour breakdown limits where applicable.
- Thermal endurance: temperature index (TI) ≥ 130°C when agreed with purchaser and tested per IEC 216 series.
- Thermal shock resistance (cycles without cracking) and minimum edge coverage percentages.
- Test methods and specimen prep: Tests referenced to IEC 455-2-2 (methods for coating powders); specimen coating thickness for tests typically 250 ± 50 µm (minimum 200 µm for property tests).
- Supply & marking: Powders must be supplied in dry containers protecting against humidity and be marked with manufacturer, designation, mass, recommended application temperature, batch number, expiry/use‑by date, maximum storage temperature and any hazardous-material markings.
Applications
- Protective insulating coatings for electrical apparatus, enclosures and components.
- Corrosion‑protective and dielectric layers on metal parts in motors, transformers, switchgear and power distribution equipment.
- Coatings where specific combinations of electrical insulation, mechanical protection and thermal endurance are required.
Who should use this standard
- Manufacturers and formulators of epoxy coating powders for electrical applications.
- Test laboratories and QA teams performing conformity testing and type approval.
- Electrical product designers, OEMs and procurement specialists specifying insulation coatings.
- Regulatory and certification bodies assessing coating performance on electrical equipment.
Related standards
- IEC 455-1 (Definitions and general requirements)
- IEC 455-2-2 (Methods of test for coating powders)
- IEC 216 series (thermal endurance testing)
- IEC 79-7 (requirements for equipment in explosive atmospheres) where applicable
Keywords: epoxy resin-based coating powders, electrical insulation, powder coating, IEC 455-3-11, thermal endurance, insulating materials, coating powder specifications.
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Frequently Asked Questions
HD 307.3.11 S1:1990 is a standardization document published by CLC. Its full title is "Specification for solventless polymerisable resinous compounds used for electrical insulation - Part 3: Specifications for individual materials - Sheet 11: Epoxy resin-based coating powders". This standard covers: Contains the general and special requirements for thermosetting epoxy resin-based coating powders.
Contains the general and special requirements for thermosetting epoxy resin-based coating powders.
HD 307.3.11 S1:1990 is classified under the following ICS (International Classification for Standards) categories: 29.035.01 - Insulating materials in general. The ICS classification helps identify the subject area and facilitates finding related standards.
HD 307.3.11 S1:1990 has the following relationships with other standards: It is inter standard links to HD 307.1 S2:1981, HD 307.2.2 S1:1986. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
HD 307.3.11 S1:1990 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-1998
Specification for solventless polymerisable resinous compounds used for
electrical insulation - Part 3: Specifications for individual materials - Sheet 5:
Epoxy resin-based coatin powders (IEC 60455-3-11:1988)
Specification for solventless polymerisable resinous compounds used for electrical
insulation -- Part 3: Specifications for individual materials -- Sheet 11: Epoxy resin-based
coating powders
Bestimmung für lösemittelfreie härtbare Reaktionsharzmassen für die Elektroisolierung --
Teil 3: Anforderungen an einzelne Werkstoffe -- Blatt 11: Beschichtungspulver auf Basis
von Epoxidharz
Spécification relative aux composés résineux polymérisables sans solvant utilisés
comme isolants électriques -- Partie 3: Spécifications pour les matériaux particuliers --
Feuille 11: Poudres de revêtement à base de résines époxydes
Ta slovenski standard je istoveten z: HD 307.3.11 S1:1990
ICS:
29.035.01 Izolacijski materiali na Insulating materials in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME CEI
INTERNATIONALE IEC
INTERNATIONAL 60455-3-11
Première édition
STANDARD
First edition
1988-04
Spécification relative aux composés résineux
polymérisables sans solvant utilisés comme
isolants électriques
Troisième partie:
Spécifications pour les matériaux particuliers
Feuille 11: Poudres de revêtement à base de
résines époxydes
Specification for solventless polymerisable
resinous compounds used for electrical insulation
Part 3:
Specifications for individual materials
Sheet 11: Epoxy resin-based coating powders
© IEC 1988 Droits
de reproduction réservés — Copyright - all rights reserved
Aucune partie de cette publication
ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme
que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y
compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans
l'accord écrit de l'éditeur writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
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PRICE CODE
International Electrotechnical Commission
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Pour prix, voir catalogue en vigueur
•
• For price, see current catalogue
455-3-11 (1) © IEC - 3
INTERNATIONAL ELECTROTECHNICAL COMMISSION
SPECIFICATION FOR
SOLVENTLESS POLYMERISABLE RESINOUS COMPOUNDS
USED IN ELECTRICAL INSULATION
Part 3: Specifications for individual materials
Sheet 11: Epoxy resin-based coating powders
FOREWORD
1)
The formal decisions or agreements of the IEC on technical matters, prepared by Technical
Committees on which all the National Committees having a special interest therein are
represented, express, as nearly as possible, an international consensus of opinion on the
subjects dealt with.
2)
They have the form of recommendations for international use and they are accepted by the
National Committees in that sense.
3) In order to promote international unification, the IEC expresses the wish that all
National Committees should adopt the text of the IEC recommendation for their national
rules in so far as national conditions will permit. Any divergence between the IEC
recommendation and the corresponding national rules should, as far as possible, be clearly
indicated in the latter.
4)
The IEC has not laid down any procedure concerning marking as an indication of approval
and has no responsibility when an item of equipment is declared to comply with one of its
recommendations.
PREFACE
This standard has been prepared by Sub-Committee 15C: Specifications,
of IEC Technical Committee No. 15: Insulating materials.
The text of this standard is based on the following documents:
Six Months' Rule Report on Voting
15C(C0)213 15C(C0)228
Full information on the voting for the approval of this standard can be
found in the Voting Report indicated in the above table.
455-3-11 (1) ©
IEC - 5 -
The following lEC publications are quoted in this standard:
Publications Nos. 79-7 (1969): Electrical apparatus for explosive gas atmospheres. Part 7:
Construction and test of electrical apparatus, type of
protection "e".
216-1 (1974): Guide for the determination of thermal endurance properties
of electrical insulating materials. Part 1: General proce-
dures for the determination of thermal endurance properties,
temperature indices and thermal endurance profiles.
216-2 (1974): Part 2: List of materials and available tests.
216-3 (1980): Part 3: Statistical methods.
216-4 (1980): , Part 4: Instructions for calculating the thermal endurance
profile.
455-1 (1974): Specification for solventless polymerisable resinous
compounds used for electrical insulation, Part 1: Definitions
and general requirements.
455-2-2 (1984): Part 2: Methods of test. Test methods for coating powders for
electrical purposes.
455-3-11 (1) © IEC - 7 -
SPECIFICATION FOR
SOLVENTLESS POLYMERISABLE RESINOUS COMPOUNDS
USED IN ELECTRICAL INSULATION
Part 3: Specifications for indivi
...




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