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GB/T 25089-2010Road vehicles -- Data cables (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Level / Type

National · Recommended

Issue date

September 2, 2010

Implementation date

February 1, 2011

Scope

GB/T 25089-2010 (Road vehicles -- Data cables) is available as an English-translated PDF.

GB/T 25089-2010 — This standard specifies the test methods and requirements for shielded and unshielded, sheathed and non-sheathed twisted pair data cables and coaxial pair cables for road vehicles. As for the sheathed cables, SEE GB/T 25087-

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Document preview — GB/T 25089-2010

National Standard of the People's Republic of China

ICS: 43.040.10
Classification: T 36

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Foreword...3
1 Scope...4
2 Normative references...4
3 Terms and definitions...4
4 General requirements...5
5 Size...7
6 Electrical performance...8
7 Mechanical properties...12
8 Low temperature performance...12
9 Wear resistance...12
10 Heat aging...13
11 Environment and chemical resistance...13
12 Flame retardant...13
13 Artificial atmosphere aging...14

Foreword

This standard, through modification, adopts ISO/TS 16553.2006 "Road vehicles

- Data cables - Test methods and requirements".

This standard was redrafted in accordance with ISO/TS 16553.2006.

The technical differences between the standard and ISO/TS 16553.2006 and

the causes are as follows.

- The definitions of 3.3 "Shielding" and 3.4 "Cable core" in the original text

are repeated in the terms of GB/T 25087-2010 "Road vehicles - Round,

screened and unscreened 60 V and 600 V multi-core sheathed cables"; in

this standard, GB/T 25087-2010 is directed referenced AND the repeated

definitions are deleted.

- In accordance with the provisions on drafting of national standards, ADD

the following information to the scope of application. This standard applies

to type M, N, O, L vehicle data cable.

As compared with ISO/TS 16553.2006, the editorial changes are as follows.

- CHANGE "this international standard" in the original text into "this standard";

- DELETE the final references from the international standard.

This standard was proposed by the National Development and Reform

Commission.

This standard shall be under the jurisdiction of the National Automobile

Standardization Technical Committee.

The drafting organization of this standard. Beijing Force Automotive Wire Co.,

Ltd.

1 Scope

This standard specifies the test methods and requirements for shielded and

unshielded, sheathed and non-sheathed twisted pair data cables and coaxial

pair cables for road vehicles. As for the sheathed cables, SEE GB/T 25087-

2010 "Road vehicles - Round, screened and unscreened 60 V and 600 V multi-

core sheathed cables". As for the rated temperature class, SEE GB/T 25085-

2010 "Road vehicles - 60 V and 600 V single-core cables".

This standard applies to type M, N, O, L vehicle data cable.

2 Normative references

The provisions in following documents become the provisions of this Standard

through reference in this Standard. For the dated references, the subsequent

amendments (excluding corrections) or revisions do not apply to this Standard;

however, parties who reach an agreement based on this Standard are

encouraged to study if the latest versions of these documents are applicable.

For undated references, the latest edition of the referenced document applies.

GB/T 25085-2010 Road vehicles - 60 V and 600 V single-core cables (ISO

6722.2006, IDT)

GB/T 25087-2010 Road vehicles - Round, screened and unscreened 60 V

and 600 V multi-core sheathed cables (ISO 14572.2006, IDT)

ASTM D 4566 Standard test methods for electrical performance properties

of insulations and jackets for telecommunications wire and cable

3 Terms and definitions

The terms and definitions as established in GB/T 25087-2010 and the following

apply to this standard.

3.1

Capacitance

5 Size

5.1 Cable outer diameter

It shall follow 5.2 of GB/T 25087-2010.

5.2 Sheath ellipticity

It shall follow 5.3 of GB/T 25087-2010, AND whether this test is used is to be

determined by the supplier and the buyer through negotiation.

5.3 Sheath thickness

It shall follow 5.4 of GB/T 25087-2010.

5.4 Twisted pair pitch

5.4.1 Overview

This test is only applicable to unshielded twisted pairs. Whether this test is used

is to be determined by the supplier and the buyer through negotiation.

5.4.2 Test specimen

PEEL the sheath from the 1 m length cable; ENSURE that the twisted pair ends

are not scattered. It may also use other lengths based on the cable length.

5.4.3 Device

It shall use the measurement device of precision ± 1.0 mm.

5.4.4 Procedure

CLAMP the test specimen to prevent loosening. MEASURE the length of the

five pitches; AND a single pitch is the travel length for one turn along the axial

single line of the twisted pair. The average length of a single pitch is the

measured length divided by 5.

5.4.5 Requirements

The average pitch length shall be within the scope as determined by the

supplier and the buyer through negotiation.

L2 - Length of the second test specimen, m.

6.4.4 Requirements

The values of C, CA, and CB are to be determined by the supplier and the buyer

through negotiation.

6.5 Linear delay

6.5.1 Test application

Whether this test is used is to be determined by the supplier and the buyer

through negotiation.

6.5.2 Test specimen

From one end of a 3 m length test specimen, PEEL 50 mm sheath; and PEEL

12 mm insulation from both ends of the cable core.

6.5.3 Device

The measurement device used is a network analyzer.

6.5.4 Procedures

It shall follow ASTM D 4566. USE the network analyzer to measure the phase

constant at 1 MHz. USE the following equation to calculate linear delay.

Where.

w - Angular frequency, rad/s;

beta - Phase constant, rad;

tp - Linear delay, ns/m;

L - Length of test specimen, m.

6.5.5 Requirements

The calculated value shall be within the range as determined by the supplier

and the buyer through negotiation.

6.6 Shielding efficiency

10 Heat aging

10.1 3000h long-term aging

This test is used to determine the "rated temperature class". AND it shall follow

10.1 of GB/T 25087-2010.

10.2 240h short-term aging

This test is used to simulate the thermal drift. AND it shall follow 10.2 of GB/T

25087-2010.

10.3 Heat shrinkage of sheath

It shall follow 10.4 of GB/T 25087-2010. AND whether this test is used is to be

determined by the supplier and the buyer through negotiation.

11 Environment and chemical resistance

11.1 Sheath liquid resistance

It shall follow 11.1 of GB/T 25087-2010. AND whether this test is used is to be

determined by the supplier and the buyer through negotiation.

11.2 Sheath marking durability

It shall follow 11.2 of GB/T 25087-2010. AND whether this test is used is to be

determined by the supplier and the buyer through negotiation.

11.3 Sheath ozone resistance

It shall follow 11.3 of GB/T 25087-2010. AND whether this test is used is to be

determined by the supplier and the buyer through negotiation.

11.4 Alternating temperature and humidity

It shall follow 11.4 of GB/T 25087-2010. AND whether this test is used is to be

determined by the supplier and the buyer through negotiation.

12 Flame retardant

It shall follow the chapter 12 of GB/T 25087-2010.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 14 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 25087-2010Road vehicles -- Round, screened and unscreened 60V and 600V multi-core sheathed cables

GB/T 25085-2010 · ISO 14572.2006

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