GB/T 18015.5-2025Multicore and symmetrical pair/quad cables for digital communications - Part 5: Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz - Horizontal floor wiring - Sectional specification (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document is Part 5 of GB/T 18015 "Twisted or Star-Twisted Multi-Core Symmetrical Cables for Digital Communication". GB/T 18015 has been issued.

The following parts were laid out.

---Part 1: General Specifications;

---Part 11: General Specifications for Competency Accreditation;

---Part 2: Horizontal Cabling Cables with Twisted Pair or Star-Shaped Symmetrical Cables and Transmission Characteristics of 100MHz and Below specification;

---Part 21: Detailed Specifications for Blanking Cables in Horizontal Cabling Layers;

---Part 22: Horizontal Cabling Cable Capability Approval Specification;

---Part 3: Work Area Cabling Cable Specifications;

---Part 31: Detailed Specifications for Blank Cabling in Work Areas;

---Part 32: Work Area Cabling Capability Approval Specification;

---Part 4: Specifications for Vertical Cabling Cables;

---Part 41: Detailed Specifications for Vertical Cabling Cable Blanks;

---Part 42: Vertical Cabling Cable Capability Accreditation Specification;

---Part 5: Horizontal Cabling Cables with Twisted Pair or Star-Shaped Symmetrical Cables and Transmission Characteristics of 1000MHz and Below specification;

---Part 6: Work Area Cabling Cables for Twisted Pair or Star-Twisted Symmetrical Cables with Transmission Characteristics of 1000MHz and Below specification;

---Part 7: Twisted-pair or star-twisted symmetrical cables for digital and analog communication with transmission characteristics of 1200MHz and below specification;

---Part 8: Work Area Cabling Cables for Twisted Pair or Star-Shaped Symmetrical Cables with Transmission Characteristics of 1200MHz and Below specification.

This document replaces GB/T 18015.5-2007 "Digital Communication - Twisted Pair or Star-Twisted Multi-Core Symmetrical Cables - Part 5: Cables with..." Specifications for Horizontal Cabling of Twisted Pair or Star-Twisted Symmetrical Cables with Transmission Characteristics of 600MHz and Below, in accordance with GB/T 18015.5-Compared to 2007, aside from structural adjustments and editorial changes, the main technical changes are as follows.

a) The scope has been expanded to include cable categories and support for remote power supply (see Chapter 1);

b) Increased requirements for cable bending radius under installation conditions (see 4.2);

c) The range and requirements for cable operating temperatures in climatic conditions have been changed (see 4.3, 1.4 of the 2007 edition);

d) The requirements for the nominal diameter of the conductor have been changed (see 5.2.1, 2.2.3 of the 2007 edition);

e) The insulation requirements have been changed (see 5.2.2, 2.2.4 of the 2007 edition);

f) The insulating chromatogram has been removed (see 2.2.5 in the 2007 edition);

g) The requirements for the transmission performance test length have been changed (see 6.1, 3.3 of the 2007 edition);

h) A test method without baluns has been added (see 6.1);

i) Increased resistance imbalance between wire pairs (see 6.2.2.2);

j) Requirements for dielectric strength test results have been added (see 6.2.3);

k) The test frequency point for capacitance imbalance to ground has been changed (see 6.2.6, 3.2.6 in the 2007 version);

l) A test method for transfer impedance has been added (see 6.2.7);

m) The requirements for the results of the transfer impedance test have been changed (see 6.2.7, 3.2.7 of the 2007 version);

n) The shielding resistor has been removed (see 3.2.8 in the 2007 edition);

o) The test requirements for coupling attenuation have been changed (see 6.2.8, 3.3.9 in the 2007 version);

p) Added types of coupling attenuation (see 6.2.8);

q) Increased current carrying capacity (see 6.2.9);

r) The propagation speed requirement has been changed (see 6.3.1, 3.3.1.1 in the 2007 version);

s) The temperature range and requirements for phase delay difference testing have been changed (see 6.3.2.2, 3.3.1.3 in the 2007 version);

t) The environmental impact of phase delay difference has been removed (see 3.3.1.4 in the 2007 edition);

u) The constant value for the attenuation test has been changed (see 6.3.3.1, 3.3.2.1 in the 2007 version);

v) Change "environmental impact" to "attenuation with increasing temperature" (see 6.3.3.3, 3.3.2.3 in the 2007 version);

w) Increased requirements for temperature rise caused by remote power supply (see 6.3.3.3);

x) The requirements for unbalanced decay have been changed (see 6.3.4, 3.3.2.3 in the 2007 version);

y) Added classifications for proximal and distal unbalanced attenuation (see 6.3.4);

z) The requirements for near-end crosstalk have been changed (see 6.3.5, 3.3.4 in the 2007 version);

aa) Change "Equal Level Far-End Crosstalk" to "Far-End Crosstalk Attenuation Ratio" (see 6.3.6, 3.3.5 in the 2007 version);

bb) The requirements for inter-cable (external) near-end crosstalk have been changed (see 6.3.7, 3.3.11 in the 2007 version);

cc) The requirements for inter-cable (external) far-end crosstalk have been changed (see 6.3.8, 3.3.11 in the 2007 version);

dd) The requirements for inter-cable (external) crosstalk in bundled cables have been changed (see 6.3.9, 3.3.10 in the 2007 version);

(ee) The characteristic impedance requirements have been changed (see 6.3.10, 3.3.6 in the 2007 edition);

(ff) The return loss requirements have been changed (see 6.3.11, 3.3.7 in the 2007 version);

(gg) Removed masking attenuation (see 3.3.8 in the 2007 version);

(hh) The cable size requirements have been changed (see 6.4.1, 3.4.1 in the 2007 edition);

i) Increased insulation tensile strength (see 6.4.3);

j) Improved insulation peeling performance (see 6.4.5);

kk) The requirements for the bending test under tension have been changed (see 6.4.10, 3.4.8 in the 2007 version);

l) A cable repeated bending test has been added (see 6.4.11);

The requirements for the tensile strength of cables have been changed (see 6.4.12, 3.4.9 of the 2007 edition);

(nn) An impact test for the cable has been added (see 6.4.13);

(oo) Added a collision test for the cable (see 6.4.14);

(pp) Vibration testing of the cable has been added (see 6.4.15);

(qq) Added steady-state humid heat (see 6.5.9);

(rr) Increased solar radiation (see 6.5.10);

(ss) Increases the amount of solvent and contaminating liquid (see 6.5.11);

(tt) Increased salt spray and sulfur dioxide (see 6.5.12);

uu) Added water immersion (see 6.5.13);

vv) Increases hygroscopicity (see 6.5.14);

The capillary phenomenon test has been added (see 6.5.15);

(xx) The requirements for the emission of toxic gases have been changed (see 6.5.20, 3.5.13 in the 2007 version);

The name of "Combined Combustion and Smoke Test" has been changed to "Combined Combustion and Smoke Test of Cables in a Ventilated Space Environment," and further...

The test requirements have been revised (see 6.5.21, 3.5.14 in the 2007 version);

zz) Added multi-pair 5e cables and general rules and transmission parameters (see 7.1 and 7.2).

This document is equivalent to IEC 61156-5:2020 "Twisted or star-twisted multi-core symmetrical cables for digital communication - Part 5: Cables with 1000MHz" Horizontal cabling cable specifications for twisted-pair or star-twisted symmetrical cables with the following transmission characteristics.

The following minimal editorial changes have been made to this document.

---Note 6.3.3.3 has been added (see 6.3.3.3) to clarify that the temperature coefficient of unshielded cables at 40°C is 0.4%/°C.

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the China Electrical Equipment Industry Association.

This document is under the jurisdiction of the National Technical Committee on Standardization of Wires and Cables (SAC/TC213).

Introduction

Digital communication multi-core symmetrical cables, whether twisted-pair or star-struck, are widely used in information technology, building cabling, security monitoring, industrial control, and machinery.

Applications include people, vehicle-mounted internet, aircraft, ships, data centers, and rail transportation. In addition to transmitting digital information, these cables can also provide low-voltage power supply.

Electrical function. GB/T 18015 "Twisted-pair or star-struck multi-core symmetrical cables for digital communication" aims to establish the production of symmetrical cables with twisted-pair or star-struck structures.

The basic standard documents for this type of cable product provide a basis for its design, production, acceptance, testing, and certification, and are proposed to consist of twenty-four parts.

constitute.

---Part 1: General Specification. This section aims to specify the general requirements for this type of cable.

---Part 11: General Specifications for Capability Accreditation. The purpose is to establish a general framework and format for accreditation of this type of cable capability.

---Part 12: Electrical transmission characteristics and test methods for twisted-pair/star-stranded symmetrical cables. The purpose is to provide test methods for the electrical transmission characteristics of this type of cable.

The transport characteristics provide a theoretical basis and experimental methods.

---Part 14: Conductor thermal performance evaluation of bundled cables for power transmission in IEEE 802.3 PoE applications.

The purpose is to provide an assessment of the conductor temperature rise performance of bundled cables in remote Power over Ethernet applications based on the IEEE 802.3 standard.

Test methods and calculation formulas.

---Part 2: Specifications for horizontal cabling cables with twisted-pair or star-twisted symmetrical cables having transmission characteristics of 100MHz and below.

The purpose is to provide a basis for the design, production, and testing of horizontal cabling cables of 100MHz and below.

---Part 21: Detailed Specifications for Horizontal Cabling Cable Blanks. The purpose is to define horizontal cabling specifications for 100MHz and below.

The framework and format for detailed cable specifications.

---Part 22: Horizontal Cabling Cable Capability Approval Specification. The purpose is to define the horizontal cabling capability for 100MHz and below.

Requirements for accreditation of cabling and cable capabilities.

---Part 3: Work Area Cabling Cable Specifications. The purpose is to provide specifications for work area cabling cables operating at 100MHz and below.

It serves as a basis for design, production, and testing.

---Part 31: Detailed Specifications for Work Area Cabling and Cable Spacing. The purpose is to define work area cabling specifications for 100MHz and below.

The framework and format for detailed cable specifications.

---Part 32: Work Area Cabling Capability Approval Specification. The purpose is to define the requirements for work areas operating at 100MHz and below.

Requirements for accreditation of cabling and cable capabilities.

---Part 4: Vertical Cabling Cable Specifications. The purpose is to provide design specifications for vertical cabling cables operating at 100MHz and below.

Production, testing, and other evidence.

---Part 41: Detailed Specifications for Vertical Cabling Cables. The purpose is to define the specifications for vertical cabling cables at 100MHz and below.

A detailed and standardized framework and writing format.

---Part 42: Vertical Cabling Cable Capability Approval Specification. The purpose is to define the capability requirements for vertical cabling at 100MHz and below.

Requirements for cable capability approval.

---Part 5: Horizontal Cabling Cable Specifications for Twisted Pair or Star-Twisted Symmetrical Cables with Transmission Characteristics of 1000MHz and Below the purpose is to provide a basis for the design, production, and testing of horizontal cables of 1000MHz and below.

---Part 6: Cable Classification for Working Area Wiring of Twisted Pair or Star-Shaped Symmetrical Cables with Transmission Characteristics of 1000MHz and Below the purpose is to provide a basis for the design, production, and testing of cabling cables for work areas of 1000MHz and below.

---Part 7: Twisted-pair or star-twisted symmetrical cables for digital and analog communication with transmission characteristics of 1200MHz and below Standards. The purpose is to provide a basis for the design, production, and testing of digital and analog communication cables of 1200MHz and below.

---Part 8: Cable Classification for Twisted Pair or Star-Shaped Symmetrical Cables with Transmission Characteristics of 1200MHz and Below in the Work Area the purpose is to provide a basis for the design, production, and testing of cabling cables for work areas of 1200MHz and below.

---Part 9: Specifications for cables used in channels with transmission characteristics of.2000MHz and below. The purpose is to provide specifications for.2000MHz...

It provides design, production, and testing guidelines for cables used in channels and below.

---Part 10: Specifications for patch cord cables with transmission characteristics of.2000MHz and below. The purpose is to provide specifications for patch cord cables with transmission characteristics of.2000MHz and below.

The following jumper cables provide a basis for design, production, and testing.

---Part 111: Single-pair symmetrical horizontal cabling cable specifications with transmission characteristics of 1250MHz and below the purpose is to provide a basis for the design, production, and testing of single-pair horizontal cabling cables at 1250MHz and below.

---Part 112: Cable Classification for Single-Pair Symmetrical Cables with Transmission Characteristics of 1250MHz and Below in the Work Area the purpose is to provide a basis for the design, production, and testing of single-pair work area cabling cables for 1250MHz and below.

---Part 113: Specification for horizontal cabling cables with single-pair symmetrical cables having transmission characteristics of 20MHz and below.

The purpose is to provide a basis for the design, production, and testing of single-pair horizontal cabling cables of 20MHz and below.

---Part 114: Specification for single-pair symmetrical cable working area cabling with transmission characteristics of 20MHz and below.

The purpose is to provide a basis for the design, production, and testing of cabling cables for work areas of 20MHz and below.

---Part 115: Horizontal Twisted Pair/Star-Twisted Symmetrical Cables with Transmission Characteristics of 1000MHz and Below and Fire-Resistant Properties Layered cabling specifications. The purpose is to provide water-resistant cabling with transmission characteristics of 1000MHz and below while also meeting fire resistance requirements.

Flat-floor cabling cables provide a basis for design, production, and testing.

Digital communication multi-core symmetrical cable with twisted pairs or star strands Part 5: Transmission with 1000MHz and below Characteristic twisted-pair or star-strand symmetrical cables Horizontal cabling cable specifications

1 Scope

This document specifies cables primarily used in horizontal cabling systems as defined in ISO/IEC 11801 (all parts).

This document specifies cable designs including shielded, fully shielded, and unshielded cables with twisted-pair or star-pair configurations. Cables at 20°C...

The transmission characteristics and frequency range are shown in Table 1.

Table 1 Cable Categories

Cable Category

highest reference frequency MHz 5e class 100

6 Categories 250

Class 6A 500

7 Categories 600

7A Class 1000

The cables specified in this document can be used for various communication channels, with a maximum of four pairs used simultaneously. In this sense, this document is for system developers.

The staff evaluated the new system to provide the required cable characteristics.

The cables specified in this document are suitable for operation under the voltage and current specified in communication systems, but not for low-resistance cables used in public power supply systems.

These cables are designed to support low-voltage, long-distance power transmission applications, such as IEEE 802.3af (PoE, Power over Ethernet) or higher.

Further applications, such as IEEE 802.3at or IEEE 802.3bt, are supported. Based on installation experience, more information on supporting these applications can be found here.

IEC 61156-1-4, IEC TR61156-1-6 and ISO/IEC TS29125.

2 Normative references the contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 18015.1-2017 Multi-core symmetrical cables with twisted pairs or star twists for digital communication – Part 1: General Specification (IEC 61156-1) 2009, MOD) Note. The content referenced in GB/T 18015.1-2017 is consistent with the content referenced in IEC 61156-1:2007 and IEC 61156-1:2007/AMD1.2009.

There are no technical differences.

IEC 62153-4-3 Metallic communication cables – Test methods – Part 4-3.Electromagnetic compatibility – Surface transfer impedance – Triaxial method [Me-] transferimpedance-Triaxialmethod]