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GB 12528.11-2003: Insulated cables (wires) for railway vehicles of rated voltages up to and including 3 kV Amendment 1: Cross-linked polyolefin insulated cables (wires) for railway vehicles
GB 12528.11-2003 
GB
ICS 29.060.20
K 13
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Insulated cables (wires) for railway vehicles
of rated voltages up to and including 3 kV
Amendment 1. Cross-linked polyolefin insulated cables (wires)
for railway vehicles
ISSUED ON. JUNE 9, 2003
IMPLEMENTED ON. JULY 1, 2003
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China
Table of Contents
Foreword ... 3 
1  Scope ... 4 
2  Normative references ... 4 
3  Operational performance ... 6 
4  Model, name and specification of the product ... 6 
5  Technical requirements ... 7 
6  Test method ... 14 
7  Inspection rules ... 15 
8  Mark and packaging ... 16 
Foreword 
This Amendment is the supplement to GB 12528.1-1990 Insulated cables (wires) for
railway vehicles of rated voltages up to and including 3 kV -- Part 1. General rules. It is
used to supplement the provisions related to the cross-linked polyolefin insulated cables
(wires) for railway vehicles that are not covered in GB 12528.1-1990.
This Amendment shall be under the jurisdiction of the National Electric Wire Electric Cable
Standardization Committee.
The drafting organizations of this Amendment. Shanghai Nan Yang Electrical Appliance
Co., Ltd., and Tianjin Jinshan Wire and Cable Co., Ltd.
The main drafters of this Amendment. Zhang Guoping, and Zheng Guojun.
Insulated cables (wires) for railway vehicles
of rated voltages up to and including 3 kV
Amendment 1. Cross-linked polyolefin insulated cables (wires)
for railway vehicles
1  Scope 
This document specifies the models, specifications, technical requirements and test
methods, marks and packaging of the cross-linked polyolefin insulated cables (wires) for
railway vehicles of rated voltages up to and including 3 kV.
This document applies to the cables for various vehicles of rated voltages up to and
including 3 kV and the electric equipment used in the power distribution system, control
system and signal system of the urban railway vehicles. It is especially applicable to
narrow-space and places where require low smoke, halogen-free or flame retardant.
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/T 2951.1 Common test methods for insulating and shielding materials of electric
cables Part 1. Methods for general application Section one. Measurement of thickness
and overall dimensions -- Tests for determining the mechanical properties (GB/T
2951.1-1997, idt IEC 811-1-1.1993)
GB/T 2951.2 Common test methods for insulating and shielding materials of electric
cables -- Part 1. Methods for general application -- Section two. Thermal ageing
methods (GB/T 2951.2-1997, idt IEC 811-1-2.1985)
GB/T 2951.4 Common test methods for insulating and shielding materials of electric
cables Part 1. Methods for general application (GB/T 2951.4-1997, idt IEC
81-1-4.1985)
GB/T 2951.5 Common test methods for insulating and shielding materials of electric
cables -- Part 2. Methods specific to elastomeric compounds section one -- Ozone
resistance test -- Hot set test--Mineral oil immersion test (GB/T 2951.5-1997, idt IEC
811-2-1.1986)
GB/T 2951.6 Common test methods for insulating and shielding materials of electric
cables Part 3. Methods specific to PVC compounds section one. Pressure test at high
temperature -- Test for resistance to cracking (GB/T 2951.6-1997, idt IEC
811-3-1.1985)
GB/T 3048.4 Test methods for determining electrical properties of electric cables and
wire -- Measurement of D.C. resistance of conductors
GB/T 3048.5 Test methods for determining electrical properties of electric cables and
wires -- Determining insulation resistance-Comparison-galvanometer method
GB/T 3048.8 Test methods for determining electrical properties of electric cables and
wires -- A.C. voltage tests
GB/T 3048.9 Test methods for determining electrical properties of electric cables and
wires -- A.C. spark test of insulated cores
GB/T 3956 Conductors of insulated cables (GB/T 3956-1997, idt IEC 228.1978IEC
288A.1982)
GB/T 4909.2 Test methods for bare wires; Measurement of dimensions
GB/T 4910 Tinned round copper wire
GB 6995.1 Markings for electric cables and wires. Part 1. General requirements
GB 6995.3 Markings for electric cables and wires. Part 3. Identifications of cables
and wires
GB 12528.1 Insulated cables (wires) for railway vehicles of rated voltages up to and
including 3 kV -- General
GB/T 17650 (All parts) Test on gases evolved during combustion of materials from
cables (idt IEC 60754)
GB/T 17651 (All parts) Measurement of smoke density of cables burning under defined
conditions. Part 1. Test apparatus (idt IEC 61034)
GB/T 18380.1 Tests on electric cables under fire conditions – Part 1. Test on a single
vertical insulated wire or cable (GB/T 18380.1-2001, idt IEC 60332-1-1993)
JB/T 8137 (All parts) Delivery drums for wires and cables
TB/T 1484.1-2001 Specification for cables on board rolling stock -- Part 1. Standard
wall insulation cables up to AC 3 kV
NFF 63-808/5.1992 Railway rolling stock -- Halogen free, electrical conductors and
cables with thin insulation and protective layers.
5  Technical requirements 
5.1 Conductor
5.1.1 The conductor of the WDZ-DCYJ-125 Type cables shall comply with the
provisions of the fifth kind of soft copper conductor, as specified in GB/T3956. The
conductor of the WDZ-DCYJ/B-125 and WDZ-DCYJ/B-150 cables shall comply with the
provisions of the second kind of stranded conductor, as specified in GB/T3956.
5.1.2 The tinned round copper wire which is in line with GB/ T4910 is used in the single
conductor. The conductor structure is specified in Table 2.
5.1.3 The conductor surface shall be smooth and clean, free from oil stains, no burrs
and sharp edges that may damage the insulation, no raised or fractured single line.
5.1.4 A layer of isolation layer made of suitable materials is allowed on the conductor
surface.
5.2 Insulation
5.2.1 The insulating layer of the WDZ-DCYJ-125 Type cables is made of 125°C
cross-linked polyolefin insulated materials. The insulating layer of the WDZ-DCYJ/B-125
Type cables is made of high strength 125°C cross-linked polyolefin insulated materials.
The insulating layer of the WDZ-DCYJ/B-150 Type cables is made of high strength 150°C
cross-linked polyolefin insulated materials. The insulation thickness shall meet the
requirements in Table 2, with the mean value not less than the specified nominal value.
The thickness of the thinnest point shall not be less than 90% of the nominal value - 0.1
mm.
5.2.2 Non-electrical performance of the insulation shall comply with the provisions in
Table 3.
5.2.3 Insulation surface shall be round, smooth and no bump. The insulation layer of
Model WDZ-DCYJ-125 Type cable is black. The insulating layer of the WDZ-DCYJ/B-125
Type and WDZ-DCYJ/B-150 Type cables, in general, shall be light brown and it is allowed
to determine the color according to the Agreement between the Supplier and the
Purchaser.
5.3 Finished cable
5.3.1 External diameter of cable
The cable’s extern...