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M304 

(Stress Relief Mastic, Stress Grading Mastic)

Applications:

To provide stress relief of the electrical field in all MV cables joints and termination for heat shrink and cold shrink technologies. Applicable up to 15kV.

 

Features:

Equilibrate the electrical field and reduce the electrical stress.

Self-fusing mastic filling voids and irregular shapes

Resistant to water and humidity

Excellent self-sticking

Service temperature: -20℃ to 90℃

Overload temperature: 100℃max

 

Technical properties:

Property

Testing method

Typical data

Tensile strength

ASTM D 2671

≥0.2MPa

Elongation at break

ASTM D 2671

≥950%

Dielectric strength

IEC 243

≥12kV/mm

Dielectric constant

IEC 250

11-13

Volume resistance

IEC 93

≥1.5X1012Ω•cm

Loss factor(50Hz)

-

0.035

Adhesive and self-amalgamation

-

Good

Oxygen resistance

-

Pass

Heat shock(105℃)

-

Pass

 

Dimensions:

2mmX30mmX360mm

3mmX30mmX300mm

 

 

Related information:

The product is supplied as rolls of specified dimensions. Recommend to store in the original packing, protected from moisture, dust, heat and sunlight.


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