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GB/T 20779.2-2007 English PDF

US$139.00 · In stock
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GB/T 20779.2-2007: Rubber for electric power safety -- Part 2: Rubber for cable accessories
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 20779.2-2007	English	139	Add to Cart	2 days [Need to translate]	Rubber for electric power safety -- Part 2: Rubber for cable accessories	Valid	GB/T 20779.2-2007

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Basic data

Standard ID	GB/T 20779.2-2007 (GB/T20779.2-2007)
Description (Translated English)	Rubber for electric power safety -- Part 2: Rubber for cable accessories
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G47
Classification of International Standard	83.140.99
Word Count Estimation	5,572
Date of Issue	2007-11-28
Date of Implementation	2008-06-01
Quoted Standard	GB/T 20779.1-2006
Regulation (derived from)	China Announcement of Newly Approved National Standards No. 12 of 2007 (No. 112 overall)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard provides for cable attachment component insulation and semi-conductive silicon rubber or (three yuan) EPDM -based mixtures technical requirements. This section applies to electric power apparatus to work under the insulation and electrical safety and semi- conductive rubber products rubber products or components but does not include wire and cable insulation and semi-conductive layer of rubber material.

GB/T 20779.2-2007: Rubber for electric power safety -- Part 2: Rubber for cable accessories

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rubber for electric power safety Part 2. Rubber for cable accessories ICS 83.140.99 G47 National Standards of People's Republic of China Power Protection rubber material Part 2. cable accessories rubber material Posted 2007-11-28 2008-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 20779 "power with protective rubber material" is expected to be divided into the following parts. --- Part 1. General; --- Part 2. cable accessories rubber material; --- Part 3. Rubber insulator material. This is Part 2 GB/T 20779 of. This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Rubber and rubber products Standardization Technical Committee rubber sundries Club (SAC/TC35/SC7) centralized. This part of the unit responsible for drafting. Shanghai Electric Cable Research Institute. Participated in the drafting of this section. General Electric (China) Co., Ltd., Shanghai Sanyuan Cable Accessories Co., Ltd., Shanghai back to days of new chemical materials Material Limited. The main drafters of this section. Liu Jing Ping Chen Ji Min, Linwei Yu, Shen Weidong, Chen Hui. This section first release. Power Protection rubber material Part 2. cable accessories rubber material

1 Scope

This section GB/T 20779 specifies the silicone rubber cable accessories for insulating and semiconducting components or (Triad) ethylene-propylene rubber Technology-based mixture requirements. This section applies to electrical equipment and electrical work under an electric field safety insulation and semi-conductive rubber or rubber components Products, but does not include wire and cable insulation and the semiconductive layer of a rubber material.

2 Normative references

The following documents contain provisions which, through reference GB/T 20779 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 20779.1-2006 power protective rubber materials - Part 1. General

3 Classification Code

Cold shrink cable accessories rubber material L Prefabricated cable accessories rubber material Y

4 Performance

4.1 Sample Preparation Prefabricated cable accessories using rubber sample period of vulcanization, cold shrink cable accessories with silicone rubber samples using two vulcanization. vulcanization Temperature and time using the recommended parameters of manufacturing. 4.2 Requirements Cable accessories properties of rubber materials shall comply with the provisions in Table 1. Table 1 cable accessories using rubber materials technical requirements No. Test Item Unit skills requirement FJ1L FB1L FJ1Y FB1Y FJ2Y FB2Y Original tensile properties Tensile Strength Elongation at break N/mm2 ≥5.0 ≥420 ≥5.0 ≥420 ≥4.0 ≥300 ≥4.0 ≥300 ≥5.0 ≥300 ≥10.0 ≥300 2 Tear strength N/mm ≥17 ≥6 ≥6 ≥6 ≥10 ≥10 Hot air aging (135 ℃ × 168h) after tensile properties Tensile strength change rate Elongation at break change rate - - - - -30 To + 30 -30 To 30 -30 To 30 -30 To 30 After 1008h artificial climate (xenon lamp) aging tensile properties Tensile strength change rate Elongation at break change rate - - - - -30 To + 30 -30 To 30 -30 To 30 -30 To 30

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