Low Smoke Zero Halogen Irradiated Insulating Cable Material (LSZH Irradiated Insulating Cable Material)

Inspection item

Unit

Requirements

WDZ-Y-J70

WDZ-Y-H70

WDZ-Y-H90

1

Tensile strength

MPa

≥10. 0

≥10. 0

≥10. 0

2

Elongation at break

%

≥160

≥160

≥160

3

Air aging chamber

Aging temperature

℃

100±2

100±2

110±2

Aging time

h

168

168

240

Maximum rate of change of tensile strength

%

±25

±25

±25

Maximum rate of change of elongation at break

%

±25

±25

±25

4

Thermal deformation

Test temperature

℃

90±2

90±2

90±2

Experimental result

%

≤50

≤50

≤50

5

20℃ volume resistivity

Ω · m

≥1. 0×10¹²

≥1. 0×10¹⁰

≥1. 0×10¹⁰

6

Volume resistivity at operating temperature

Test temperature

℃

70±1

—

—

Volume resistivity

Ω · m

≥2. 0×108

—

—

7

Dielectric strength

MV/m

≥20

≥18

≥18

8

Heat shock test

Test temperature

℃

130±3

130±3

130±3

Test time

%

1

1

1

Experimental result

—

No cracking

No cracking

No cracking

9

Impact embrittlement temperature

Test temperature

℃

-25

-25

-25

Experimental result

Number

≤15/30

≤15/30

≤15/30

10

Ozone resistance test

Test temperature

℃

—

25±2

25±2

Experiment time

h

—

24

24

Ozone concentration

ppm

—

250~300

250~300

Experimental result

—

—

No cracking

No cracking

11

Hot water immersion test

Test temperature

℃

—

70±2

70±2

Experiment time

h

—

168

168

Maximum rate of change of tensile strength

%

—

±30

±30

Maximum rate of change of elongation at break

%

—

±35

±35

12

Oxygen index

%

≥28

≥30

≥30

13

Smoke density

flameless

—

≤350

≤350

≤350

flaming

—

≤100

≤100

≤100

14

Combustion releases gas acidity

HCI and HBr content

%

≤0.5

≤0.5

≤0.5

HF content

%

≤0.1

≤0.1

≤0.1

pH value

—

≥4.3

≥4.3

≥4.3

Electric conductivity

μS/mm

≤10

≤10

≤10

15

Material smoke toxicity hazards

According to the application requirements of the product, negotiated by the supply and demand parties.