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SPACER CABLE TECHNICAL DATA FOR 3 LAYER COMPOUNDS 

 
The first layer data (inner layer) 35kV semi-conducting shield compund

 

DESCRIPTION

UNIT

REQUIRED VALUE

1

Color

 

Black

2

Density (23℃)

g/cm3

1.11

3

Tensile strength before aging

Mpa

min  14

Elongation at break before aging

%

min  200

4

Performance after air oven aging   

Testing temperature

135±2

Testing time

hours

168

Tensile strength variation before & after aging

%

15

At-break-elongation variation before & after aging

%

-7.5

5

Hot set test(0.2MPa,200℃, 15min)

Elongation under load

%

43

Variation after cool

%

0

6

Volume resistivity at 20℃

Ω.cm

33

7

Volume resistivity at 90℃

Ω.cm

181

8

Volume resistivity at 90℃(volume resistivity at 90℃, after air oven aging  (100℃*168hours))

Ω.cm

124

  

The second layer data (middle layer) 35kV XLPE, color natural (clear)

 

DESCRIPTION

UNIT

REQUIRED VALUE

1

Color

 

clear, natural

2

Density (23℃)

g/cm3

0.926

3

Tensile strength before aging

Mpa

min  23

Elongation at break before aging

%

min  500

4

Performance after air oven aging   

Testing temperature

135±2

Testing time

hours

168

Tensile strength variation before & after aging

%

-9.3

At-break-elongation variation before & after aging

%

-17

5

Hot set test(0.2MPa,200℃, 15min)

Elongation under load

%

35

Variation after cool

%

0

6

Dielectric loss factor , 20℃, 50Hz

 

0.0004

7

Dielectric coefficient , 20℃, 50Hz

 

2.1

8

Volume resistivity at 20℃

Ω.m

1.5x1013

9

Dielectric strength

MV/m

35

  

The third layer data (outer layer) 35kV XLPE, Gray, UV resistant, weather resistant

 

DESCRIPTION

UNIT

REQUIRED VALUE

1

Color

 

Gray

2

Density (23℃)

g/cm3

0.926

3

Tensile strength before aging

Mpa

min  24.7

Elongation at break before aging

%

min  521

4

Performance after air oven aging   

Testing temperature

135±2

Testing time

hours

168

Tensile strength variation before & after aging

%

-7

At-break-elongation variation before & after aging

%

-5

5

Hot set test(0.2MPa,200℃, 15min)

Elongation under load

%

33

Variation after cool

%

0

6

Dielectric loss factor , 20℃, 50Hz

 

0.00005

7

Dielectric coefficient , 20℃, 50Hz

 

2.0

8

Volume resistivity at 20℃

Ω.m

1.4x1015

9

Dielectric strength

MV/m

35

 

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