|
US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB 31247-2014: Classification for burning behavior of electric and optical cables
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 31247-2014 | English | 209 |
Add to Cart
|
3 days [Need to translate]
|
Classification for burning behavior of electric and optical cables
| Valid |
GB 31247-2014
|
PDF similar to GB 31247-2014
Basic data | Standard ID | GB 31247-2014 (GB31247-2014) | | Description (Translated English) | Classification for burning behavior of electric and optical cables | | Sector / Industry | National Standard | | Classification of Chinese Standard | C82 | | Classification of International Standard | 13.220.20 | | Word Count Estimation | 9,954 | | Date of Issue | 12/5/2014 | | Date of Implementation | 9/1/2015 | | Quoted Standard | GB 8624-2012; GB/T 14402; GB/T 17650.2; GB/T 17651.2; GB/T 18380.12; GB/T 20285; GB/T 31248-2014 | | Regulation (derived from) | Announcement of Newly Approved National Standards 2014 No. 27 | | 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 specifies the terms and definitions cable and fiber optic cable combustion performance, combustion performance levels and criterion, additional information and logo. This Standard applies to the burning behavior of the construction of cable | GB 31247-2014: Classification for burning behavior of electric and optical cables---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.
Classification for burning behavior of electric and optical cables
ICS 13.220.20
C82
National Standards of People's Republic of China
Cables and cable combustion performance classification
Issued on. 2014-12-05
2015-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard Chapter 4 ~ Chapter 6 are mandatory, the rest are recommended.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by the People's Republic of China Ministry of Public Security.
This standard by the National Standardization Technical Committee for fire protection material Technical Committee (SAC/TC113/SC7) centralized.
This standard is drafted by. Ministry of Public Security of Sichuan Fire Research Institute.
Participated in the drafting of this standard. Shanghai Electric Cable Research Institute, Telecom Science and Technology Institute of the fifth, Shenyang Fire Research Institute Ministry of Public Security, Sichuan Ming
Star Cable Co., Ltd. Zhongli Science and Technology Group Co., Ltd., Far East Holding Group Co., Ltd., Shanghai Gaoqiao Cable Factory Limited
Division, Hangzhou Tiger second choice Cable Co., Ltd., Anhui Hua special cable Group Co., DuPont China Holding Co., Ltd. (Suzhou) CommScope
International Trading Co., Belden Hirschmann Network Systems International Trading (Shanghai) Co., Ltd., Daikin Fluorine Chemical (China) Co., Ltd., Nike
Senkai News (Shanghai) Cable Co., Ltd., Solvay (Shanghai) Co., Ltd., 3M China Ltd, China Motion Industries (Suzhou) Co., Ltd.
The main drafters of this standard. Chengdao Bin, Li Feng, Feng, Qu Li, Wang Pengxiang, including Mitsuhiro, Yu Wei, Zhang Xiang, Gong Guoxiang, Ding Hongjun, Zhu Yaming,
Tang Yong, Hu Xinyu.
This standard is the first release.
Introduction
Promote the use of flame-retardant cable and fiber optic cable have great significance to building fire safety. For a long time, due to the lack of cables and cable flammability
Grading standards of construction fire safety regulations in place for the necessary fire-retardant cable very general provisions, and in fact different
The nature of the use of premises, such as some crowded places and in need of special protection areas and to deal with the provisions of its cables and fiber optic cable used in high
Combustion performance levels. By quantifying fiber optic cables and combustion performance grading Technical indicators to make fire-safety requirements more scientific and reasonable, and will probably
Fire hazards resulting minimized.
This standard is based on the actual needs of the construction of fire safety, and fiber optic cables to meet the performance requirements of classification and combustion system
Given. To ensure fire protection with the construction coordination, and with the practical application of engineering matches this standard for cable and fiber optic cable combustibility
When Grading Technical indicators fully into account the existing level of development of cable and fiber optic cable industry, and a lot of experimental verification.
Cables and cable combustion performance classification
1 Scope
This standard specifies the terms and definitions fiber optic cables and combustion performance, combustion performance levels and criterion, additional information and identification.
This standard applies to construction projects using fiber optic cables and combustion performance classification, does not apply to cable and fiber optic cable fire performance
Classification.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 8624-2012 Classification for burning behavior of building materials and products
GB/T 14402 Determination of building materials and products of combustion heat value
GB/T 17650.2 gases evolved when material from cables burning test methods - Part 2. measurement of pH and
Conductivity is measured acidity of gases
GB/T 17651.2 of cables burning under defined conditions Measurement of smoke density - Part 2. Test procedure and requirements
GB/T 18380.12 and optical fiber cables under fire conditions - Test - Part 12. single insulated wire and cable vertical flame
Test 1kW pre-mixed flame spread test methods
GB/T 20285 material smoke toxicity hazard rating
GB/T 31248-2014 Test methods of cables under fire conditions flame spread, heat release and smoke production properties by
3 Terms and Definitions
GB 8624-2012 and GB/T 31248-2014 define the following terms and definitions apply to this document. To facilitate making
With the following list of repeated GB 8624-2012 and GB/T 31248-2014 of certain terms and definitions.
3.1
Gross calorific value grosscalorificpotential
PCS
Complete combustion per unit mass of material, all of the heat of combustion products condenses into water when released all the steam out.
[GB 8624-2012, the definition 3.22]
3.2
Smoke toxicity smoketoxicity
The extent of hazardous substances in the flue gas caused by damage/injury.
[GB 8624-2012, the definition 3.19]
3.3
Heat release rate heatreleaserate
HRR
Under specified conditions, material in unit time by the release of heat of combustion.
[GB/T 31248-2014, Definition 3.1]
3.4
Total heat release totalheatrelease
THR
Heat release rate within the specified time integral value.
Example. THR1200 represented by the fire in the 1200s the total heat release.
[GB/T 31248-2014, 3.2 Definition]
3.5
Tobacco rate smokeproductionrate
SPR
The amount of smoke generated per unit time.
[GB/T 31248-2014, the definition 3.3]
3.6
Tobacco Total totalsmokeproduction
TSP
Smoke production rate within a specified time integral value.
Example. TSP1200 represents the total amount of smoke produced by the fire in the 1200s.
[GB/T 31248-2014, the definition 3.4]
3.7
Burning growth rate index firegrowthrateindex
FIGRA
Maximum sample combustion heat release rate and its value corresponds to the ratio of time for combustion performance rating.
[GB/T 31248-2014, the definition 3.6]
3.8
Burning droplets/particles flamingdroplet/particle
In the combustion test, separated from the sample or particles.
[GB/T 31248-2014, the definition 3.7]
3.9
Smoke density smokedensity
The minimum light transmittance according to GB/T 17651.2 determined to express It.
3.10
Flame spread flamespread
FS
Maximum carbonized by GB/T 31248-2014 Determination of bunched cable flame surface distance.
3.11
Vertical flame spread verticalflamespread
According to GB/T 18380.12 measured the distance between the starting point of the flame at the starting point of the charred portion of the surface of a single cable.
3.12
Corrosion corrosion
The ability of the surrounding medium corrosion material.
Note. This standard material for electric cables on the components in the combustion gas released acidity size to evaluate their resistance.
4 and combustion performance level criterion
4.1 fiber optic cables and combustion performance levels are shown in Table 1.
Table 1 fiber optic cables and combustion performance levels
Combustion performance level Description
A non-combustible cable (fiber optic)
B1 flame-retardant Class 1 cable (fiber optic)
B2 Class 2 flame retardant cable (fiber optic)
B3 ordinary cable (fiber optic)
4.2 cable and fiber optic cable combustion performance level criterion in Table 2.
Table 2 fiber optic cables and the combustion performance level criterion
Test methods for combustion performance grade rating criterion
A GB/T 14402 gross calorific value PCS≤2.0MJ/kga
B1
GB/T 31248-2014
(20.5kW ignition source)
Flame spread FS≤1.5m;
Peak heat release rate HRR peak ≤30kW;
The total amount of heat released by the fire inside the 1200s THR1200≤15MJ;
Burning growth rate index FIGRA≤150W/s;
Tobacco peak rate SPR peak ≤0.25m2/s;
The total amount of smoke produced by the fire TSP1200≤50m2 1200s within
GB/T 17651.2 and smoke density (minimum light transmission) It≥60%
GB/T 18380.12 vertical flame spread H≤425mm
B2
GB/T 31248-2014
(20.5kW ignition source)
Flame spread FS≤2.5m;
Peak heat release rate HRR peak ≤60kW;
The total amount of heat released by the fire inside the 1200s THR1200≤30MJ;
Burning growth rate index FIGRA≤300W/s;
Tobacco peak rate SPR peak ≤1.5m2/s;
The total amount of smoke produced by the fire TSP1200≤400m2 1200s within
GB/T 17651.2 and smoke density (minimum light transmission) It≥20%
GB/T 18380.12 vertical flame spread H≤425mm
B3 B2 level not reached
a whole article and any one of the components (except metal material) should be tested separately, the total gross calorific heat value measured overall products as well as components
The value of the classification criterion are met, before they determined that A-level.
5 Additional Information
5.1 General provisions
Combustion performance levels 5.1.1 Additional information, including cable and fiber optic cable burning droplets/particles level, and corrosive smoke toxicity grade level.
5.1.2 fiber optic cables and combustion performance rating of B1 and B2 grade level should be given the appropriate additional information.
5.2 Burning droplets/particles Ratings
5.2.1 burning droplets/particles grade level is divided into d0, d1 and d2 grade level, a total of three levels.
5.2.2 burning droplets/particles rating and classification criterion in Table 3.
Table 3 burning droplets/particles grade and classification criterion
Level Test Method for classification criterion
d0
d1
d2
GB/T 31248-2014
In the 1200s no burning droplets/particles
Burning drip inside 1200s/particles duration of no more than 10s
D1 level not reached
5.3 smoke toxicity rating
5.3.1 smoke toxicity grade level is divided into t0, t1 and t2 grade level, a total of three levels.
5.3.2 smoke toxicity rating and classification criterion in Table 4.
Table 4 smoke toxicity rating and classification criterion
Level Test Method for classification criterion
t0
t1
t2
GB/T 20285
Reach ZA2
Reach ZA3
Level not reached t1
5.4 corrosive rating
5.4.1 Corrosion grade level is divided into a1, a2 and a3 grade level, a total of three levels.
5.4.2 Corrosion grade and classification criterion in Table 5.
Table 5 Corrosion rating and classification criterion
Level Test Method for classification criterion
a1
a2
a3
GB/T 17650.2
Conductivity ≤2.5μs/mm and pH≥4.3
Conductivity ≤10μs/mm and pH≥4.3
A2 level not reached
6 logo
6.1 in accordance with the standard testing with the cables and cable requirements shall identify the combustion performance levels in their products and packaging.
6.2 combustion performance rating of Class B1 and B2 level of cable and fiber optic cable, should be required to Chapter 5 gives burning droplets/particles grade, flue gas
Toxic and corrosive grade levels, etc. Additional information identification.
6.3 fiber optic cables and combustion performance levels and additional information is identified as follows.
Example. GB 31247B1- (d0, t1, a1) shows the cable or fiber optic cable combustion performance level for the B1 level, burning droplets/particles d0 grade rating, smoke toxicity
Grade level is t1, a1 corrosive grade level.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 31247-2014_English be delivered?Answer: Upon your order, we will start to translate GB 31247-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB 31247-2014_English with my colleagues?Answer: Yes. The purchased PDF of GB 31247-2014_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|