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…

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Product Details

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
Before ageing	Elongation at	Intermediate values	%	≥200	330
Heat ageing test of air box	Aging conditions	Temperature	℃	135±2
	Aging conditions	Time	h	7×24
	Tensile strength	Intermediate values	MPa	& nbsp;	9
	Tensile strength	Rate of change	%	≤±30	10
	Elongation at	Intermediate values	%	& nbsp;	275
	Elongation at	Rate of change	%	≤±30	-6
Air bomb ageing test	Test conditions	Temperature	℃	127±1
	Test conditions	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 & nbsp;	Test conditions	Temperature	℃	25±2
		Time	h	24
		Ozone concentration	%	0.025～0.030
	Test results		& nbsp;	No cracks	No cracks

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