GB/T 12528-2008 PDF English
US$125.00 · In stock · Download in 9 secondsGB/T 12528-2008: Rail vehicle cables with rated voltages up to and including 3kV Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 12528: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 12528-2008 | English | 125 |
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Rail vehicle cables with rated voltages up to and including 3kV
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| GB 12528.1-1990 | English | 719 |
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Insulated cables (wires) for railway vehicles of rated voltages up to and including 3 kV--General
| Obsolete |
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GB/T 12528-2008: Rail vehicle cables with rated voltages up to and including 3kV---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/GBT12528-2008
GB
ICS 29.060.20
K 13
NATIONAL STANDARD
GB/T 12528-2008
Replacing GB 12528.1-1990, GB 12528.11-2003
Rail vehicle cables with rated voltages
up to and including 3kV
Issued on. JUNE 30, 2008
Implemented on. APRIL 1, 2009.
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 7
4 Product code, marking and sample... 8
5 Operational properties... 10
6 Model, name and specification of the product... 11
7 Technical requirements... 13
8 Test Methods... 26
9 Inspection Rules... 27
10 Marking and Package... 29
Annex A... 31
Annex B... 33
Annex C... 36
Annex D... 37
Annex E... 38
1 Scope
This Standard specifies the type, specification, technical requirement, test method, mark,
and package of the cable used in rail vehicles with rated voltages up to and including 3kV.
This Standard is applicable to cables used in electric units like power distribution system,
control system, signal system etc. It is suitable for rail transit vehicles of rated voltages up
to and including 3kV.
2 Normative references
The articles contained in the following documents have become part of this Standard
when they are quoted herein. For the dated documents so quoted, all the modifications
(excluding corrections) or revisions made thereafter shall not be applicable to this
Standard. For the undated documents so quoted, the latest editions shall be applicable to
this Standard.
GB 252-2000 Light diesel fuels
GB/T 1690-2006 Rubber vulcanized or thermoplastic - Determination of the
effect of liquids (ISO 1817.2005, MOD)
GB/T 2900.10-2001 Electrotechnical vocabulary--Electric cables (idt IEC
60050(461). 1984)
GB/T 2951.1-1997 Common test methods for insulating and sheathing materials of
electric cables Part 1.Methods for general application Section one. Measurement of
thickness and overall dimensions—Tests for determining the mechanical properties (idt
IEC 811-1-1.1993)
GB/T 2951.2-1997 Common test methods for insulating and sheathing materials of
electric cables--Part 1.Methods for general application--Section two. Thermal ageing
methods (idt IEC 811-1-2.1985)
GB/T 2951.4-1997 Common test methods for insulating and sheathing materials of
electric cables Part 1.Methods for general application (idt IEC 81-1-4.1985)
GB/T 2951.5-1997 Common test methods for insulating and sheathing materials of
electric cables--Part 2.Methods specific to elastomeric compounds section
one--Ozone resistance test--Hot set test--Mineral oil immersion test (idt IEC
811-2-1.1986)
GB/T 2951.6-1997 Common test methods for insulating and sheathing materials of
electric cables Part 3.Methods specific to PVC compounds section one. Pressure test
at high temperature—Test for resistance to cracking (idt IEC 811-3-1.1985)
GB/T 3048.4-2007 Test methods for electrical properties of electric cables and
wires—Part 4.Test of DC resistance of conductors
GB/T 3048.5-2007 Test methods for electrical properties of electric cables and
wires—Part 5.Test of insulation resistance
3 Terms and definitions
The following terms and definitions and those established in GB/T 2900.10-2001 apply to
this Standard.
3.1
Ethylene-propylene rubber compound
It is the compound of specific components including ethylene propylene rubber and/or
synthetic elastomer, after the procedure of being properly selected, matched, processed
and vulcanized.
3.2
CSP or equivalent synthetic compound
It is the compound of specific components including chlorosulfonated polyethylene or
chlorinated polyethylene synthetic elastomer after the procedure of being properly
selected, matched, processed and vulcanized.
3.3
Cross-linked polyolefin compound
It is the compound of specific components including polyethylene, polypropylene, and
polybutylene-1 or its copolymer after the procedure of being properly selected, matched,
processed and cross-linked.
3.4
Polyolefin compound for thin-wall
Its special components include the polymer, copolymer and alloy of aromatic group and
heteroatom (N, O and Si in main chain of polymer molecule). Or the compound of polymer
and copolymer of olefin polymers, if necessary, it shall be cross-linked.
3.5
Voltage rating
The voltage rating of cable refers to the reference voltage used for cable design and
electrical performance test.
3.6
Type tests (Symbol T)
Type test refers to testing one type cable stipulated in this Standard before delivery so as
to prove that it is of good properties to satisfy the stipulated application requirements in
line with general business principles. The nature of type test is that there is no need to
conduct another test once the cable is tested; and there is a need to conduct another one
in case that the materials or designs of the cable are changed, which will influence its
properties.
4 Product code, marking and sample
4.1 Series code
Product series code DC
4.2 Insulation and sheathing material code
4.3 Thermal endurance properties code
100°C 100
125°C 125
150°C 150
4.6 Product marking
Products are represented by models, specifications and number of this Standard. The
composition is as shown.
4.7 Example labeling
a) The mineral oil and fuel oil resistant, 100°C temperature resistant class, AC rated
voltage 1500V, Category 6 conductor, 95mm2, ethylene propylene rubber
compound, insulated chlorosulfonated polyethylene rubber compound or other
comparable synthetic elastomer sheathed cables is expressed as. DCEH/3-100
1500V 95(B) GB/T 12528-2008.
b) 125°C temperature resistant class, AC rated voltage 1,500V, Category 5 conductor,
50mm2, low-smoke zero halogen cross-linked polyolefin insulated cable is
expressed as. WDZ-DCYJ/1-125 1500V 50(A) GB/T 12528-2008.
c) 125°C temperature resistant class, AC rated voltage 750V, Category 2 conductor,
4mm2, polyolefin insulated cable for low-smoke zero halogen thin-wall type cable
is expressed as. WDZ-DCYJB/1-125 750V 4(C) GB/T 12528-2008.
d) 125°C temperature resistant class, AC rated voltage 1500V, Category 5 conductor,
50mm2, low-smoke zero halogen cross-linked polyolefin insulated cable is
expressed as. WDZ-DCYJ/3-125 1500V 50(A) GB/T 12528-2008.
5 Operational properties
5.1 Rated voltage of the cable
AC voltage rating Uo of cable is 500V, 750V, l.5kV and 3kV. The DC rated voltage is 1.5
times the AC rated voltage.
6 Model, name and specification of the product
6.1 Product model and name
See Table 1 for product model and name.
7 Technical requirements
7.1 Conductor
7.1.1 Material
The copper conductor shall adopt the soft round copper wire which complies with GB/T
3956-1997.The conductor surface shall be smooth and clean, free from oil stains, no
burrs and sharp edges, no raised or fractured single line.
7.1.3 Resistance
Resistance of cable conductor at 20°C shall be in compliance with the provisions of Table
3.
7.2 Insulation
7.3 Sheathing
7.3.1 Material
The selection of cable sheathing shall be consistent with the cable model. Select the
appropriate specified compound.
7.4 Finished electric level
7.4.1 Structure size of the finished electric level
The external diameter of the finished cable shall be in compliance with the provisions of
Table 6-Table 11.
7.4.4 Test on leakage and discharge of cable surface
Cable sheaths or surface of the single insulation layer shall be subject to surface
discharge test under the test conditions specified in Table 14.And the measured value
(mA) of leakage current shall not exceed half of the measured value (mm) of the cable
diameter. Its flashover voltage is not less than 10kV.
7.4.10 Acidity test of combustion gas
Low-smoke zero halogen flame retardant cable shall be carried out by test according to
the prescribed conditions of GB/T 17650.2-1998.The pH of combustion gas acidity is ≥
4.3; Conductivity is ≤ 10μS /mm.
7.4.11 Delivery length
The length of looped cable shall be 100 m or integer multiples of 100 m and that of the
plated cable shall not be less than 100 m. It is allowed to deliver short-length cable of not
less than 30 m, but the quantity of such cable shall not be more than 10% of total length of
delivered cable. Any length delivery is allowed according to the mutual agreements.
USE length counter for the length metering and the error shall not exceed ± 0.5%.
8 Test Methods
8.1 Structure size
Appearance shall be inspected by normal eyesight.
Conductor structure shall be designed in accordance with GB/T 4909.2-1985.
For thickness of insulation, thickness of sheath, as well as external diameter of cable and f
value, it shall respectively take 1 section of sample-cable, at 3 places with interval
distance of at least 1m, in accordance with GB/T 2951.1-1997.
9 Anti-rubbing test of printed marks T, S T, S T, S T, S
9.2 Acceptance rules
The products shall pass the inspection by Quality Control Department of the
manufacturers before leaving the factory. Outgoing products shall be accompanied by
quality inspection certificate.
10.1 Mark
The external surface of the cable shall be identified with continuous marks, such as the
name of the manufacturer, its brand, type, nominal cross section and voltage class etc.
Marking methods shall be in accordance with the requirements of GB/T 6995.1-2008 and
GB/T 6995.3-2008.
The mark shall be written clearly and not easy to be wiped off. Even it is slightly wiped ten
times with wet absorbent cotton, it shall still be visible.
10.2 Package
Cable shall be delivered in coil or in loop. And it shall be winded neatly and packaged
properly. Cable drum shall be in compliance with the provisions of JB/T 8137.
Each package shall be attached with labels, indicating.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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