HEPR Medium Voltage Cable Insulating Rubber Compound

The rubber compound carry out the regulation of IEC60092-351:2004 high hardness HEPR, mainly used for ships cable insulating layer. & nbsp; Performance comparison Test item Unit IEC60092-351:2004（HEPR） Test value Before…

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Product Details

The rubber compound carry out the regulation of IEC60092-351:2004 high hardness HEPR, mainly used for ships cable insulating layer.

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Performance comparison

Test item			Unit	IEC60092-351:2004（HEPR）	Test value
Before ageing	Tensile strength	Intermediate values	MPa	≥8.5	10.6
Before ageing	Elongation at	Intermediate values	%	≥200	340
Heat ageing test of air box	Aging conditions	Temperature	℃	100±2
	Aging conditions	Time	h	7×24
	Tensile strength	Intermediate values	MPa	—	—
	Tensile strength	Rate of change	%	≤±30	12
	Elongation at	Intermediate values	%	—	—
	Elongation at	Rate of change	%	≤±30	-9
Air bomb ageing test	Test conditions	Temperature	℃	127±2
	Test conditions	Time	h	40
	Tensile strength	Rate of change	%	≤±30	18
	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	20
	Permanent deformation after cooling		%	≤15	5
Ozone resistance test	Test conditions	Temperature	℃	25±2
		Time	h	24
		Ozone concentration	%	0.025～0.030
	Test results			No cracks	No cracks
Hardness IRHD b				≥80	85
150% elongation modulus			MPa	≥4.5	5.0

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