Characteristics of computer cables reference standards for computer cables

Author：hlyb Add Time：2016-05-24 08:21:19

1 Scope

This standard specifies the product classification, technical requirements, test methods and inspection rules of electronic computer cables (hereinafter referred to as cables).

This product is suitable for signal transmission and detection instruments and meters of power generation, metallurgy, petrochemical and other industrial and mining enterprises' distribution systems, electronic computer systems and automation systems.

1. Reference standards

Gb2951 mechanical and physical property test of wires and cables

Gb3048 test method for electrical properties of wires and cables

Gb3953 round copper wire for electrical purposes

Gb4005 wire and cable delivery reel

GB4909. 2 test method and dimension measurement of bare wire

Gb8170 rounding rules for values

Gb8815 flexible polyvinyl chloride plastics for wires and cables

Ch2-1398 low density polyethylene resin

2. Service environment:

1. Working temperature: generally, it shall not exceed 70 ℃, and the * * * height with 105 behind the model shall not exceed 105 ℃.

2. * * * * low ambient temperature: fixed laying - 40 ℃ non fixed laying - 15 ℃.

3. Rated voltage U0 / u 450 / 750

4. * * * * small bending radius: the cable without armor layer shall not be less than 6 times of the outer diameter of the cable, and the cable with armor layer shall not be less than 12 times of the outer diameter of the cable.

3. Model and name

3.1.1 model structure combination mode:

3.1.2 model and name

Table 1

model

name

Laying mode

DJYVP

Copper core polyethylene insulated PVC sheathed copper wire braided general shielding computer cable

Fixed laying

DJYPV

Copper core polyethylene insulated PVC sheathed copper wire braided sub shielded computer cable

DJYPVP

Copper core polyethylene insulated PVC sheathed copper wire braided sub shielded and total shielded computer cable

DJYVRP

Copper core polyethylene insulated PVC sheathed copper wire braided general shielding soft core computer cable

Mobile use

DJYPVR

Copper core polyethylene insulated PVC sheathed copper wire braided sub shielded soft core computer cable

DJYPVPR

Copper core polyethylene insulated PVC sheathed copper wire braided sub shielded and total shielded soft core computer cable

DJYVP22

Copper core polyethylene insulated PVC sheathed copper wire braided general shielding computer cable

Underground direct burial

DJYPV22

Copper core polyethylene insulated PVC sheathed copper wire braided sub shielded computer cable

DJYPVP22

Copper core polyethylene insulated PVC sheathed copper wire braided sub shielded and total shielded computer cable

Zr added before the model is flame retardant.

3.1.3 specifications

Cable specifications are as follows: Table 2

model

Rated voltage

（U0/U）

logarithm

Nominal section (m ㎡)

DJYVP

DJYPV

DJYPVP

DJYVRP

DJYPVR

DJYPVPR

DJYVP22

DJYPV22

DJYPVP22

450/750

1，2，3，4，5，6，7，8，10，

12，14，16，19，24

0．75，1．0，1．5

5. Technical requirements

5.1 conductors

5.1.1 conductor materials shall meet the requirements of gb3953.

5.1.2 the conductor core shall be the first or fifth conductor in GB / t3956, and the conductor structure is shown in Table 3.

5.1.3 the conductor surface shall be smooth, free of oil stain, burr, sharp edge damaging insulation and convex or broken single line.

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Characteristics of computer cables reference standards for computer cables