IEC 61628-1:1997 pdf download – Corrugated pressboard and presspaperfor electrical purposes- Part 1: Definitions, designations and general requirements

IEC 61628-1:1997 pdf download – Corrugated pressboard and presspaperfor electrical purposes- Part 1: Definitions, designations and general requirements.
This part of IEC 61628 contains the definitions, designations and general requirements of corrugated pressboard and presspaper for electrical purposes.
Materials which conform to this International Standard meet established levels of performance. However, the selection of a material 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.
While the primary use of these materials is as electrical insulation, there is no intent to discourage their use in other applications for which their properties may make them suitable.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of lEG 61628. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreement based on this part of IEC 61628 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
lEG 60641-1: 1979. Specification for pressboard and presspaper for electrical purposes — Part 1: Definitions and general requirements
Amendment 1 (1993)
lEG 60641 •2: 1979, Specification for pressboard and presspaper for electrical purposes — Part 2: Methods of test
Amendment 1 (1993)
I EC 60641-3-1: 1992, Specification for pressboard and press paper for electrical purposes — Part 3: Specifications for individual materials — Sheet 1: Requirements for pressboard, types
B.O.1, B.2.1, 8.2.3. 8.3.1, B.3.3, 8.4.1, 8.4.3, B.5.1. B.6.1 and 8.7.1
lEG 60641-3-2: 1992, Specification for pressboard and presspaper for electrical purposes — Part 3: Specifications for individual materials — Sheet 2: Requirements for presspa per, types
P.2.1, P.4.1, P.4.2, P.4.3, P.6.1 and P.7.1
5 General requirements
5.1 Composition
The material shall be manufactured from pressboard or presspaper according to IEC 60641-1 and formed either by mechanical pressure, by heat or moisture application or by a combination of all three, but without additives.
6 Conditions of supply
6.1 Packaging
The material shall be supplied in a packaging that assures adequate protection during handling, transportation and storage.
7 Marking
7.1 Identification
Every material consignment shall be legibly marked with a clearly identifiable code.
7.2 Marking material
Any marking material used on corrugated material shall be electrically neutral, oil resistant and non-polluting to oil.