GB/T 12528-2008Rail vehicle cables with rated voltages up to and including 3kV (English PDF)

1 Scope

GB/T 12528-2008 is the Chinese national standard on rail vehicle cables with rated voltages up to and including 3kv, in the field of electrical engineering. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 30 June 2008 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 April 2009. Classification: ICS 29.060.20, CCS K13. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

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

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.

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.

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.