YD/T 1092-2023 English PDF (YD/T1092-2023)

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YD/T 1092-2023: Telecommunication cables - Foamed polyolefin dielectric, corrugated copper-tube outer conductor, 50 Ohm radio-frequency coaxial cable for wireless communications
YD/T 1092-2023
YD
COMMUNICATIONS INDUSTRY STANDARD
ICS 33.120.10
CCS M42
Replacing YD/T 1092-2013
Telecommunication cables - Foamed polyolefin dielectric,
corrugated copper-tube outer conductor, 50 Ohm radio-
frequency coaxial cable for wireless communications
ISSUED ON. JULY 28, 2023
IMPLEMENTED ON. NOVEMBER 01, 2023
Issued by. Ministry of Industry and Information Technology of the People's
Republic of China.
Table of Contents
Foreword... 3
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 9
4 Product classification... 9
4.1 Product model... 9
4.2 Product marks... 10
5 Requirements... 10
5.1 Cable structure... 10
5.2 Inner conductor... 11
5.3 Insulation... 12
5.4 Outer conductor... 13
5.5 Sheath... 14
5.6 Cable performance requirements... 16
5.7 Restricted substances... 22
6 Test methods... 22
6.1 Inner conductor... 22
6.2 Insulation... 23
6.3 Outer conductor... 24
6.4 Cable sheath... 25
6.5 Mechanical, physical and environmental properties of cables... 26
6.6 Electrical performance test... 28
6.7 Flame-retardant test of flame-retardant cable... 30
6.8 Restricted substances... 30
7 Inspection rules... 30
7.1 Exit-factory requirements... 30
7.2 Product Inspection... 30
7.3 Exit-factory inspection... 31
7.4 Type inspection... 32
8 Packaging, transportation and storage... 34
8.1 Packaging... 34
8.2 Transportation and storage... 34
Annex A (informative) Spelling instructions for common cable models... 36
Annex B (informative) Engineering usage data... 37
Telecommunication cables - Foamed polyolefin dielectric,
corrugated copper-tube outer conductor, 50 Ohm radio-
frequency coaxial cable for wireless communications
1 Scope
This document specifies the product classification, requirements, test methods,
inspection rules, and packaging, transportation and storage requirements for foamed
polyolefin dielectric, corrugated copper-tube outer conductor, 50 Ohm radio-frequency
coaxial cable for wireless communications.
This document applies to the manufacture, testing and use of foamed polyolefin
dielectric, corrugated copper-tube outer conductor, 50 Ohm radio-frequency coaxial
cable for wireless communications (hereinafter referred to as cable). The operating
frequency range of the cable is 100~7125 MHz.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 2951.11, Common test methods for insulating and sheathing materials of
electric and optical cables -- Part 11.Methods for general application --
Measurement of thickness and overall dimensions -- Tests for determining the
mechanical properties (GB/T 2951.11-2008, IEC 60811-1-1.2001, IDT)
GB/T 2951.13, Common test methods for insulating and sheathing materials of
electric and optical cables -- Part 13.Methods for general application --
Measurement for determining the density -- Water absorption tests -- Shrinkage test
(GB/T 2951.13-2008, IEC 60811-1-3.2001, IDT)
GB/T 3048.10, Test methods for electrical properties of electric cables and wires --
Part 10.Spark test of extruded protective sheaths
GB/T 4909.2, Test methods for bare wires -- Part 2.Measurement of dimensions
GB/T 6995.3, Markings for electric wires and cables -- Part 3.Identifications of
cables and wires
GB/T 19849, Seamless copper-tube for cable
GB/T 21021.1, Intermodulation level measurement for passive RF and microwave
devices -- Part 1.General requirements and measuring methods (GB/T 21021.1-
2021, IEC 62037-1.2012, IDT)
GB/T 21021.4, Intermodulation level measurement for passive RF and microwave
devices -- Part 4.Measurement of passive intermodulation in coaxial cables (GB/T
21021.4-2021, IEC 62037-4.2012, IDT)
GB/T 26125, Electrical and electronic products -- Determination of six regulated
substances (lead, mercury, cadmium, hexavalent chromium, polybrominated
biphenyls, polybrominated diphenyl ethers) (GB/T 26125-2011, IEC 62321.2008,
IDT)
GB/T 26303.1, Measuring method for dimensions and shapes of wrought copper and
copper alloy -- Part 1.Tube
GB/T 26303.3, Measuring methods for dimensions and shapes of wrought copper
and copper alloys -- Part 3.Sheets and strips
GB/T 29197, Copper-clad aluminum wire
GB/T 39560.8, Determination of certain substances in electrical and electronic
products -- Part 8.Phthalates in polymers by gas chromatography-mass
spectrometry (GC-MS), gas chromatography-mass spectrometry using a
pyrolyzer/thermal desorption accessory (Py/TD-GC-MS) (GB/T 39560.8-2021, IEC
62321-8.2017, IDT)
YD/T 760, Polyolefin insulation materials for communication cables
YD/T 837.3, Test method of copper-core, polyolefin insulated, composite aluminum-
plastic sheathed cables for urban local communications. Part 3.Test method of
mechanical and physical properties
YD/T 837.4, Test method of copper-core, polyolefin insulated, composite aluminum-
plastic sheathed cables for urban local communications. Part 4.Test method of
environmental performances
YD/T 837.5, Test method of copper-core, polyolefin insulated, composite aluminum-
plastic sheathed cables for urban local communications. Part 5 Test method of cable
structure
YD/T 1113, Low-smoke halogen-free compounds for telecommunication cable and
optical fiber cable
JB/T 8137, Delivery drums for wires and cables
a) Double layer insulation - polyolefin bond layer/polyolefin closed cell foam layer.
b) Triple layer insulation - polyolefin bonding layer/polyolefin closed cell foam
layer/polyolefin outer skin layer.
In the above two insulation structures, the polyolefin bonding layer shall be bonded to
both the inner conductor and the polyolefin closed-cell foam layer. In the three-layer
insulation structure, the polyolefin outer skin layer shall be tightly bonded to the
polyolefin closed-cell foam layer.
5.3.3 Insulation properties
Insulation shall meet the following requirements.
a) Insulation adhesion. There shall be no gap between the insulation layer and the
inner conductor. The insulation shall be tightly attached to the inner conductor
without looseness. The insulation adhesion on the inner conductor of the copper-
clad aluminum wire and the inner conductor of the smooth copper tube shall not
be less than 98 N.
b) Insulation heat shrinkage. total insulation shrinkage shall not exceed 6.4 mm.
5.4 Outer conductor
5.4.1 Outer conductor type and structural dimensions
The outer conductor is composed of an annular corrugated copper tube or a spiral
corrugated copper tube. The thread direction of the spiral corrugated copper tube shall
be right-handed.
The outer conductor type and structural dimensions are shown in Table 7.
5.5.3 Cable identification mark
The identification marks of finished cables shall comply with the requirements of GB/T
6995.3.The cable sheath shall be printed with the manufacturer's name or code,
manufacturing year, cable model and length at intervals of 1m along its length. The
mark shall be clearly identifiable and shall be in a color that has a large contrast with
the sheath color. The length mark shall be in meters. The nominal spacing is 1000mm.
The error range shall not exceed 0~0.5%.
5.6 Cable performance requirements
5.6.1 Mechanical and physical properties and environmental performance
5.6.1.1 Low temperature bending
The low temperature bending test of the cable shall be carried out in accordance with
the provisions of 6.5.1.After the test, the sheath and outer conductor of the specimen
shall be free of cracks, cracks and other damage. The voltage standing wave ratio
measured at both ends of the cable shall still meet the requirements in Table 10.
5.6.1.2 Temperature shock
The temperature shock test of the cable shall be carried out in accordance with the
provisions of 6.5.2.After the test, the axial dimension change of the conductor in the
cable specimen shall not exceed 1.6 mm. The axial dimension change of the insulation
shall not exceed 3.2 mm.
5.6.1.3 Repeated bending
The repeated bending test of the cable shall be carried out in accordance with the
provisions of 6.5.3.After the test, the inner conductor, outer conductor and sheath of
the specimen shall be free of breakage, cracks and other damage. The voltage standing
wave ratio measured at both ends of the cable shall still meet the requirements in Table
10.
6.1.2.1 Structural dimensions and deviations
The test method for the structural dimensions and deviations of conductors in smooth
copper tubes is as follows.
a) Average outer diameter. use an outer diameter micrometer with a graduation of
0.01 mm to measure the outer diameter of the smooth copper tube according to
the provisions of GB/T 26303.1.The average value of the maximum outer
diameter and the minimum outer diameter measured is taken as the test result.
b) Pipe wall thickness. measure with a wall thickness micrometer with a graduation
of 0.01mm according to the provisions of GB/T 26303.1.The average value of
the maximum and minimum thicknesses measured is taken as the test result.
c) Roundness. when testing the outer diameter of a smooth copper tube, the
difference between the maximum and minimum outer diameters measured is the
roundness.
6.1.3 Spiral corrugated copper tube inner conductor
When preparing the specimen, cut a section of cable about 15 times the nominal
corrugation pitch and straighten it. Remove the cable sheath, outer conductor, insulation
and avoid damaging the inner conductor by appropriate means. Then measure the
structural dimensions of the inner conductor of the spiral corrugated copper tube
according to the measurement method for the spiral corrugated outer conductor
specified in 6.3.
6.2 Insulation
6.2.1 Insulation adhesion
Visually (without a magnifying glass) check whether there are gaps and looseness
between the insulation layer and the inner conductor. For cables with copper-clad
aluminum wire inner conductors and smooth copper tube inner conductors, cut off the
insulated core wire with a total length of not less than 300 mm. Keep (50±2) mm long
insulation layer. Test the adhesion of the inner conductor to the insulation according to
the method specified in GB/T 17737.313.The test environment temperature shall be
(20 ± 5)°C.
6.2.2 Insulation heat shrink
Carry out insulation heat shrinkage test according to GB/T 2951.13.Cut 200 mm long
insulation core wire. Mark 150 mm long insulation in the middle. Remove the insulation
outside the marked line. Put the prepared specimen into a circulating ventilation oven.
Keep it at (115±2) for 4 h. Then cool it to room temperature. The shrinkage caused by
cutting the insulation specimen shall be included in the total shrinkage.
6.3 Outer conductor
To prepare the test specimen, cut a length of cable approximately 15 times the nominal
corrugation pitch and straighten it. Remove the cable sheath in an appropriate manner
and avoid damaging the outer conductor. Then measure the structural dimensions as
specified below.
a) Peak average outer diameter - Use a vernier caliper with a graduation of 0.02 mm
to measure the peak of the outer conductor wrinkle. The average of the maximum
and minimum values measured is taken as the test result.
b) Average pitch of wrinkles - Measure at least 5 consecutive pitch lengths with a
vernier caliper with a graduation of 0.02 mm. Calculate the average value.
c) Average outer diameter of spiral corrugated outer conductor trough - Use a thin
wire (diameter not greater than 0.25 mm) made of suitable material that is not
easy to stretch, and wrap it along the trough of the outer conductor corrugation
for at least 6 corrugation pitches. Tighten the thin wire appropriately. Make two
marks on the thin wire by appropriate methods. The two-point marks shall be
made at the intersection of a line parallel to the cable axis and the thin wire. The
mark points shall contain at least 5 corrugation pitches. Measure the length
between the two-mark points after the thin wire is straightened. Calculate the
outer diameter of the trough according to formula (1).
In formula (1).
L - the straight-line length between the marks, in millimeters (mm);
n - the number of pitches between the marks;
P - the average value of the measured wrinkle pitch, in millimeters (mm);
Δ - the diameter of the test wire, in millimeters (mm).
d) Average outer diameter of the trough of the annular corrugated outer conductor -
Measure at the trough of the corrugation of the outer conductor with a vernier
caliper with a graduation of 0.02 mm. The average of the maximum and minimum
values measured is taken as the test result.
e) Pipe wall thickness before corrugation - Measure with a wall thickness
micrometer with a graduation of 0.01 mm in accordance with the provisions of
GB/T 26303.1.The thickness of the copper strip used for the conductor is allowed
Outer diameter of trough
EE - elongation at break after aging;
EU - elongation at break before aging.
6.5 Mechanical, physical and environmental properties of cables
6.5.1 Low temperature bending
Test the low temperature bending performance of the cable according to Method C in
Chapter 6 of GB/T 17737.201-2015 and the provisions of this section. The core shaft
diameter for the low temperature bending test shall comply with the provisions of Table
12.The length of the cable specimen with specification code 42 shall be enough to
allow the specimen to be wound around the mandrel half a circle. The length of the
cable specimen with other specifications shall be enough to allow the specimen to be
wound around the mandrel onc...