2-100pair Outdoor Telephone Cable – hyac communication cable with Steel Messenger

Description

The HYAC communication cable specified in this articleare is suitable for the transmission of audio signals, digital signals of ISDN or analog signals below150kHz, or comprehensive sheathed local communication cables for fixed laying of certain automatic devices. 2pair, 10pair, 20pair, 25pair, 30pair, 50pair, 100pair outdoor telephone cable are available.

Outdoor Telephone Cable Specifications

Outdoor Telephone Cable Reference standard

The outdoor telephone cable has been designed and tested in accordance withthefollowing standards:

 GB/T 2951.1 “General Test Methods for Cable Insulation and SheathMaterials Part 1: General Test Methods Section 1: Measurement ofThickness and Overall Dimensions-Mechanical Performance Test”

 GB/T 2952 “Cable Outer Sheath”

 GB/T 3048.4″Test methods for electrical properties of wires and cables- DC resistance test of conductors”

 GB/T 3953″Electrician Round Copper Wire”

 GB/T 4909.2″Bare wire test method – dimension measurement”

 JB/T 8137″Wire and Cable Delivery Tray”

4 .Characteristic index

 Cable operating temperature range: -20℃～+70℃.

 Cable conductor long-term working temperature: no more than +70℃.

 Ambient temperature for cable laying: should not be lower than 0°C.

 The allowable bending radius should not be less than 15 times the outerdiameter

5. Material and Structure Requirements

5.1 Conductor

The HYAC communication cable conductor  shall be a TR-type soft round copper wire in accordancewith GB/T 3953, with a nominal diameter of 0.6 mm. The test method shall complywith the provisions of GB/T 4909.

Conductor joints are allowed. The distance between adjacent joints of all core wires ofthe cable shall not be less than 300 mm, and the tensile strength of the joints shall notbe less than 90% of that of adjacent conductors of the same length without joints. Thetest method shall comply with the provisions of GB/T 4909

5.2 Insulation

The insulation is made of high-density polyethylene insulating material, which iscontinuously extruded on the conductor wire, the surface is smooth and flat, and itsthickness should meet the electrical performance of this technical specification. Theinsulated core wire adopts the color identification mark, the insulation color isuniform, and the following ten colors are used.

—–a line: white, red, black, yellow, purple

—–b line: blue, orange, green, brown, gray

5.3 HYAC communication cable line group

The pair set consists of two insulated single wires of different colors twisted together. They are all twisted to the right, and the twisting pitch is not more than 150mm

5.4 Cabling

Arrangement of cable core: the cable core of the cable is twisted by several sub-units, and wrapped with polyester tape. The recommended cable core arrangement shall bein accordance with the provisions of Appendix C of YD/T322-2013.

5.5 Suspension wires

Suspension wires and cable cores are arranged separately and in parallel, so that thecable transverse interface has an “8” shape structure, and the breaking force of thesuspension wires is less than or equal to 16KN

5.6 Aluminum-plastic integrated sheath (inner sheath)

The polyethylene double-sided aluminum-plastic composite tape is used forlongitudinal wrapping, the nominal thickness of the aluminum tape is not less than0.15mm, and the overlapping width of the aluminum-plastic composite tape is not lessthan 20% of the circumference of the cable core; the surface of the aluminum-plasticcomposite tape should be smooth, Smooth, uniform, free from impurities, wrinkles, mottling, and other mechanical damage defects. The aluminum-plastic composite beltshould be tightly extruded with a bonded polyolefin sheath. The outer surface of thepolyolefin outer sheath should be smooth, flat, free of holes, cracks, bubbles anddents

6 .The main electrical properties of the cable

The electrical performance of the cable is shown in the table below:

7 .The main mechanical properties of the cable

8 .Testing regulations

8.1 The cables should be inspected by the technical inspection department of themanufacturer before they can leave the factory. The cables are attached with a qualityinspection certificate.

8.2 The products shall undergo factory inspection and acceptance according to therequirements of Article 22.2 of GB/T13849.1-2013

9. Marking, packaging, transportation, storage

9.1 Signs

The name of the manufacturer or its code, year of manufacture, and cablemodel are printed on the outer surface of the cable. The finished cable markscomply with the provisions of GB/T6995.3-2008

The outer surface of the cable is printed with a white and permanentlyidentifiable clear length mark, the length mark is in meters, the mark distanceis at most 1m, and the error of the length mark is not greater than ±1%. If thefirst mark does not meet the above requirements, it is allowed to wipe off thereprint or re-mark with yellow on the other side of the cable.

9.2 Packaging

The cables are neatly wound on the reel for delivery, and the cable reelcomplies with the corresponding regulations of JB/T8137. The cylinderdiameter of the cable reel is not less than 15 times the outer diameter of thecable.

9.3 Marked on the cable reel:
-name of the manufacturer;

– cable type and specification;
– cable length m; – gross weight kg;
– date of manufacture:year month;

9.4 Transport, storage

9.4.1 The cables should be properly stored to prevent moisture and long-term exposure to sunlight.

9.4.2 The cables shall be protected from collision or mechanical damageduring transportation