JB/T 10441.3-2004 PDF English
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JB/T 10441.3-2004 | English | 95 |
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Crepe insulating papers for electrical purposes. Part 3: Technical specification
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JB/T 10441.3-2004: Crepe insulating papers for electrical purposes. Part 3: Technical specification---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/JBT10441.3-2004
JB
MACHINERY INDUSTRY STANDARD
ICS 29.035.99
K 15
Crepe insulating papers for electrical purposes -- Part 3.
Technical specification
(IEC 60554-3-3.1980, MOD)
Issued on: MARCH 12, 2004
Implemented on: AUGUST 01, 2004
Issued by. National Development and Reform Commission of the People's
Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Codes... 4
4 Requirements... 5
4.1 Appearance... 5
4.2 Paper roll size... 5
4.3 Performance... 5
5 Product batch, sampling rules, and exit-factory testing items... 6
6 Test methods... 6
6.1 Appearance... 6
6.2 Outer diameter of the reel, inner diameter of the core, and length of each segment... 6
6.3 Requirements for performance in Table 1... 6
7 Packaging, marking, storage, and transportation... 6
8 Storage period... 7
Foreword
JB/T 10441 "Crepe insulating papers for electrical purposes" consists of three parts.
- Part 1.Definitions and general requirements;
- Part 2.Methods of test;
- Part 3.Technical specification.
This Part is Part 3 of JB/T 10441.
The modification of this Part adopts IEC 60554-3-3 "Specification for cellulosic papers
for electrical purposes -- Part 3.Specifications for individual materials" (English
version). Regarding technical differences, they are included in the main text and marked
with a vertical single line in the margins of the clauses they involve.
The main differences between this Part and IEC 60554-3-3 are as follows.
- Deleted the preface of IEC 60554-3-3, and included the content related to standard
structure in its introduction in the preface of this Part;
- Added a chapter "Normative reference";
- Added performance requirements such as oil absorption height, electrical strength,
and contamination of insulating liquids;
- Incorporated the methods required in Chapter 3 into the definitions and codes in
Part 1;
- Added specific content required in Chapter 2;
- Added chapters on inspection rules, packaging, storage and transportation, storage
period, etc.
This Part was proposed by China Machinery Industry Federation.
This Part shall be under the jurisdiction of National Technical Committee on Insulation
Material of Standardization Administration of China.
The drafting organizations of this Part. Guilin Institute of Electrical Science.
Main drafters of this Part. Li Bingsong, Yan Xuemei.
This Part is prepared for the first time.
Crepe insulating papers for electrical purposes -- Part 3.
Technical specification
1 Scope
This Part of JB/T 10441 specifies the names, codes, test methods, requirements,
inspection rules, packaging, transportation, and storage of substrates for manufacturing
crepe insulating papers for electrical purposes and crepe paper products.
The manufacturing of crepe insulating papers for electrical purposes can be divided into
one-step and two-step methods. One-step crepe paper is a type of crepe paper
manufactured using an intermediate process of an undried flat web base paper. The
fibers used and the process of preparing the paper should comply with the requirements
of IEC 60554-3-1 "Specification for cellulosic papers for electrical purposes". Two-step
crepe paper is a crepe paper manufactured using a crepe process that complies with IEC
60554-3-1 "Specification for cellulosic papers for electrical purposes".
Crepe insulating papers for electrical purposes is mainly used for wrapping insulation
of oil immersed transformers, reactors, and transformers.
2 Normative references
The clauses in the following documents are referred to as clauses in this Part of JB/T
10441.Any referenced document with a specified date shall not be subject to any
subsequent amendments (excluding errata) or revisions to this Part. However, it is
encouraged that all parties who have reached an agreement under this Part study
whether the latest versions of these documents can be used. The latest version of any
referenced document without a date is applicable to this Part.
JB/T 10441.1, Crepe insulating papers for electrical purposes -- Part 1.Definitions
and general requirements (IEC 60554-1.1977, MOD)
JB/T 10441.2, Crepe insulating papers for electrical purposes -- Part 2.Methods of
test (IEC 60554-2.1977, MOD)
IEC 60554-3-1, Specification for cellulosic papers for electrical purposes
3 Codes
When producing or ordering crepe paper for electrical use, its code should be prepared
according to the requirements of the model, name, and code specified in JB/T 10441.1.
The manufacturer can produce and inspect the product performance according to the
requirements of this code. The ordering party can also conduct product performance
acceptance according to the requirements of this code.
4 Requirements
4.1 Appearance
It shall comply with the provisions of JB/T 10441.
4.2 Paper roll size
Width. It is recommended to use 500 mm±5 mm, 625 m ±5 mm, or according to user
requirements.
4.3 Performance
It shall comply with the provisions of Table 1.
5 Product batch, sampling rules, and exit-factory testing
items
The product is produced in batches of 2 t continuously. Each batch of samples is
composed of three randomly selected volumes, each with a full width of several meters.
Cut specimens from a sample. The other two samples are for backup. Each batch should
undergo exit-factory inspection. The items include appearance, number of segments,
and items 1, 2, 3, 4, 5, and 11 in Table 1.
6 Test methods
6.1 Appearance
Carry out according to JB/T 10441.2.
6.2 Outer diameter of the reel, inner diameter of the core, and length of each
segment
Measure with a steel ruler.
6.3 Requirements for performance in Table 1
Carry out according to JB/T 10441.2.
7 Packaging, marking, storage, and transportation
They shall meet the requirements in JB/T 10441.1.
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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