Grey XLPE Compound for 10KV and Below Aerial Hanging Cable

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Product Description:

Main Properties & Typical Values

Test Items

Unit

Test Method

Standard

Typical value

Tensile strength

MPa

GB/T1040.3

13.0

26.4

Elongation at break

%

GB/T1040.3

300

524

Heat ageing properties (Test temperature 135℃, 168hr)

Maximum tensile strength change      

Maximum elongation at break change

%

%

GB/T8815

±20

±20

10.3

2.1

Heat elongation (200±3)℃x15minx0.2MPa)

Maximum elongation change under load      

Maximum permanent elongation change after cooled

%

%

GB/T2951

≤80

≤5

45

-6

Impact brittle temp. (-76℃)  

Impact brittle

Failure no.

GB/T5470

≤15/30

pass

Pressure crack test F50

hr

GB/T2951

1000h

pass

Artificial atmosphere ageing properties:

Ageing After 42days,

Maximum tensile strength change      

Maximum elongation at break change

Ageing after 42days vs. after 21days

Maximum tensile strength change      

Maximum elongation at break change

%

%

%

%

GB/T14049

±30

±30

±15

±15

10

2.7

6

-5

Dielectric Strength

MV/m

GB/T1408.1

≥22

39

Dielectric loss factor 50Hz, 20℃

--

GB/T1409

≤1×10-3

5.2×10-4

Volume resistance (20℃)

Ω·m

GB/T1410

≥5×1013

1.1×1014


Note: All typical values were tested by press moulding sample under the condition of 180±2 ℃,15min, and pressure over 15Mpa, then cooling to room temperature.


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