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Rubber Sheathed Cable for General Purposes

Rubber Insulated NBR Sheathed Leading Wire (JEFR)

Rubber Insulated NBR Sheathed Leading Wire (JEFR)

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1. Standard

Q/YL 15-2008


2. Application

This product is used as leading wire of transformers, electric motors, power distribution equipment and various electrical equipment, etc.

3. Code and Description

JEFR: Rubber insulated and NBR sheathed leading wire

1) Tinned copper conductor

2) Separator (if any)

3) Rubber insulation

4) NBR sheath

Note: This product can be black, white, green, red and other various bright colors with a long duration.


4. Technical Particulars

Sectional Area

(mm2)

Conductor

Nominal Insulation Thickness

(mm)

Nominal Sheath Thickness

(mm)

Max. Overall Dia.

(mm)

Approx. Weight

(kg/km)

Max. conductor DC resistance at 20℃

(Ω/km)

Strands Dia. (mm)
0.5 28 0.15 0.6 0.8 4.3
 20 38.5
0.75 42 0.15 0.6 0.8 4.5 24 25.7
1.0 32 0.20 0.6 0.8 4.7 28 18.9
1.5 48 0.20 0.6 0.8 5.0 35 12.6
2.5 19 0.41 0.8 1.0 6.2 57 7.59
4 19
 0.52 0.8 1.0 6.8 76 4.54
6 19 0.64 0.8 1.0 7.5 100 3.00
10 49 0.52
 1.0 1.2 10.0 178 1.78
16 49 0.64 1.0 1.2 11.2 243 1.18
25 98 0.58 1.0 1.4 13.7 372 0.716
35 133 0.58 1.0 1.4 14.9 471 0.528
50 133 0.68 1.2 1.6 17.1 647 0.384
70 189 0.68 1.2 1.6 19.6 876 0.270
95 259 0.68 1.4 1.6 21.9 1160 0.197
120 259 0.76 1.6 1.8 24.6 1451 0.158
150 320 0.76 1.8 2.2 29 1911.5 0.132
185 395 0.76 1.8 2.2 32 2268.65 0.108
240 513 0.76 2.2 3 35 3010 0.0817
300 641 0.76 2.4 3.5 38 3770 0.0654

5. Specification
1) Adopting tinned copper, the conductor meet the requirements of JB 947-76 Copper Conductor for Rubber and Plastic Insulated Cables.
2) The rubber insulation meets the requirements of JB 664-77 Rubber for Wires and Cables. The Min. thickness of insulation shall be no less than the difference of 90% of the nominal thickness and 0.1 mm.
3) The rubber sheath meets the requirements of JB 664-77 Rubber for Wires and Cables. The Min. thickness of insulation shall be no less than 80% of the nominal thickness.
4) The finished cable shall withstand the AC voltage test of 50HZ specified in QYDDL 0118-2003.

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