Environmentally Friendly Wires And Cables For Fixed Wiring Of 450-750V And Below

Product Name: Environmentally friendly wires and cables for fixed wiring of 450-750V and below

1-Implementation standards

Q/320282DJD006-2021

2-Product Model

WDZ-BYJ, WDZ-BYJR, WDZ-RYJ, WDZ-RYJSP, WDZ-RYS, WDZ-RYJS, etc.

3- Voltage level

450/750V, 300/500V, 300/300V

4-Specification Category

Voltage level

model

Specification

450/750V

WDZ-BYJ, WDZ-BY, etc.

1.5 mm 2 ～400 mm 2

WDZ-BYJR, WDZ-BYR, etc.

1.5 mm 2 ～240 mm 2

WDZ-RYJ, WDZ-RY, etc.

1.5 mm 2 ～240 mm 2

300/500V

WDZ-BYJ, WDZ-BY, etc.

0.5 mm 2 ～1.0 mm 2

WDZ-RY, WDZ-RY, etc.

0.5 mm 2 ～1.0 mm 2

300/500V

WDZ-BYJYJ, WDZ-BYJY, etc.

0.75 mm2～10 mm2

Voltage level

model

Number of cores

Specification

300/500V

WDZ-RYJYJB, WDZ-RYYB, etc.

2

0.75 mm 2 ～1.0 mm 2

300/500V

WDZ-RYJYJ, WDZ-RYJY, etc.

2-5

0.75 mm 2 ～2.5 mm 2

300/300V

WDZ-RYJSP, WDZ-RYSP, etc.

2

0.5 mm 2 ～6 mm 2

300/300V

WDZ-RYJS, WDZ-RYS, etc.

2

0.5 mm 2 ～6 mm 2

5- Cable structure description

Cable structure

Material Description

Conductor

Class 1 solid copper conductor or Class 2 round stranded copper conductor or Class 5 soft copper conductor

Refractory layer (if any)

Mica tape

Insulation

Cross-linked polyethylene or polyolefin or cross-linked polyolefin insulation material

Filling (if any)

Non-hygroscopic polypropylene mesh fill rope

Cable wrapping tape (if any)

Low smoke zero halogen tape or fiberglass tape or polyester tape

Metal shielding (if any)

Copper wire braid

Outer sheath (if any)

Polyolefin or cross-linked polyolefin sheath material

6-Wire core identification

6.1 Insulation coloring identification:

6.1.1 When colored insulation is used for identification of insulated wire cores, each insulated wire core may only use one color, except for the green/yellow combination color.

6.1.2 The insulation core colors of any multi-core cable cannot be green and yellow, which are not combined colors.

6.1.2 For green/yellow insulated wire cores, one color shall cover at least 30% and not more than 70% of the surface of the insulated wire core, and the other color shall cover the rest and be consistent throughout.

6.1.4 The preferred color spectrum for insulation coloring of cables with five cores or less is as follows:

1 core and 2 core: no preference for color spectrum;

3 cores: green/yellow, blue, brown or brown, black, gray;

4 cores: green/yellow, brown, black, gray or blue, brown, black, gray;

5-core: green/yellow, blue, brown, black, gray or blue, brown, black, gray, black.

6.1.5 When there are special requirements for chromatography, the supply and demand parties can negotiate and determine according to customer requirements.

6.2 Insulation digital identification:

6.2.1 The insulation cores of cables with more than two cores may also be identified by numbers. The insulation should be of the same color and arranged in natural order from the inner layer to the outer layer starting with the insulation core No. 1 (it is recommended to print white numbers on black insulation), except for the green/yellow insulation core (if any).

6.2.2 When the sign consists of a single number, a horizontal line should be added under the number. When the sign consists of two numbers, they should be arranged vertically and a horizontal line should be added under the latter number. The interval di between two adjacent groups of numbers should not be greater than 50mm. The arrangement of the digital identification signs is shown in the figure below:

7-Sheath color

Black or as per customer's requirement

8-Special performance requirements

Flame retardant A/B/C grade, fire resistant, termite resistant, rodent resistant, UV resistant, low temperature resistant, mineral oil resistant, etc.

9- Cable application characteristics

9.1 The maximum long-term rated temperature allowed for the cable conductor during normal operation is: polyolefin insulation: 70°C; cross-linked polyethylene insulation or cross-linked polyolefin insulation: 90°C .

9.2 The maximum allowable temperature of the cable conductor during short circuit (duration not exceeding 5 seconds) is: polyolefin: 160°C; cross-linked polyethylene insulation or cross-linked polyolefin insulation: 250°C.

9.3 The cable installation temperature should not be lower than 0 ℃

9.4 Minimum bending radius for cable installation:

The minimum bending radius of cables with an outer diameter less than 25 mm : not less than 4 times the outer diameter of the cable;

The minimum bending radius of cables with an outer diameter greater than or equal to 25 mm : not less than 6 times the outer diameter of the cable.

9.5 This series specifies environmentally friendly wires and cables for wiring with a maximum voltage of 450/750V. They are widely used in areas with high safety and environmental requirements, such as rail transit, airports, high-rise buildings, shopping malls, and hospitals, for electric lighting and internal wiring, electrical appliances, electric equipment, instruments and meters, control equipment, electronic equipment, and automatic devices. Installation methods include fixed wiring, indoor or outdoor installation , or embedding in conduit or similar closed systems.