盤錦億和塑膠有限公司
盤錦億和塑膠有限公司

YHJ-30A medium voltage cable insulating rubber compound

 (mining,ship 90℃ Ethylene propylene insulated rubber)


  Insulating rubber material implement the standards of MT818 mining coal cable, obey the regulation of XJ-30A in the GB7594.8-87.the product also meet the rules of ship cable insulated material EPR in the IEC60092-351:2004.
This series of product mainly falls into the catalogue, YHJ-30A (8.7/10kV or below ), YHJ-30Z(3.6/6kV or below), YHJ-30D(0.66/1.14kV or below ) etc. 

Performance comparison
  

Test item

Unit

MT818 GB7594.8-87 

YHJ-30A Test value

Before ageing

Tensile strength

Intermediate values

MPa

≥6.5

8.2

Elongation at

Intermediate values

%

≥200

330

Heat ageing test of air box

Aging conditions

Temperature

135±2

Time

h

7×24

Tensile strength

Intermediate values

MPa

 

9

Rate of change

%

≤±30

10

Elongation at

Intermediate values

%

 

275

Rate of change

%

≤±30

-6

Air bomb ageing test

Test conditions

Temperature

127±1

Time

h

40

Tensile strength

Rate of change

%

≤±30

15

Elongation at

Rate of change

%

≤±30

-10

Hot set test

Test conditions

Temperature

250±3

Load time

min

15

Mechanical stress

MPa

0.2

Load elongation

%

≤175

25

Permanent deformation after cooling

%

≤15

10

Ozone resistance test

 

Test conditions

Temperature

25±2

Time

h

24

Ozone concentration

%

0.025~0.030

Test results

 

No cracks

No cracks

 

 YHJ-30A型中壓電纜絕緣膠料

  



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