3M 7690-T Cold Shrink Silicone Rubber Termination Kits QT-III

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3M 7690-T Cold Shrink Silicone Rubber Termination Kits QT-III
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	3M™ Cold Shrink QT-III Silicone Rubber Skirted Termination Kits, 7620-Tand 7690-T Series, contain one-piece, non-skirted, silicone rubber termination, qualified as IEEE Standard 48 Class 1 for indoor weather-exposed applications. The termination assemblies consist of a tubular insulator high dielectric constant (Hi-K) stress control tube, conformable Hi-k stress controlling compound and built-in silicone top seal. The insulator is made of a new dark gray silicone rubber with advanced tracking resistance and hydrophobic properties. Information provided by 3M
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Mechanical Properties	Metric	English	Comments

Tensile Strength at Break	5.86 MPa	850 psi	Silicone Rubber Insulator; ASTM D412
	10.3 MPa	1490 psi	High-K Stress Control Tube; ASTM D412
100% Modulus	0.896 MPa @Strain 100 %	130 psi @Strain 100 %	Silicone Rubber Insulator; ASTM D412
	1.10 MPa @Strain 100 %	160 psi @Strain 100 %	High-K Stress Control Tube; ASTM D412
300% Modulus	2.76 MPa @Strain 300 %	400 psi @Strain 300 %	Silicone Rubber Insulator; ASTM D412
	3.45 MPa @Strain 300 %	500 psi @Strain 300 %	High-K Stress Control Tube; ASTM D412

Electrical Properties	Metric	English	Comments
Dielectric Constant	3.6 @Frequency 60.0 Hz	3.6 @Frequency 60.0 Hz	Silicone Rubber Insulator, 1000 V, 50% RH; ASTM D150
	22 @Frequency 60.0 Hz	22 @Frequency 60.0 Hz	High-K Stress Control Tube, 1000 V, 50% RH; ASTM D150
	25 @Frequency 60.0 Hz	25 @Frequency 60.0 Hz	High-K Stress Control Compound, 1000 V, 50% RH, 100 mil; ASTM D150
Dielectric Strength	11.8 kV/mm @Thickness 1.91 mm	300 kV/in @Thickness 0.0750 in	Environmental Sealing Compound; ASTM D149
	19.7 kV/mm @Thickness 1.91 mm	500 kV/in @Thickness 0.0750 in	Silicone Rubber Insulator; ASTM D149
Dissipation Factor	0.0030 @Frequency 60 Hz	0.0030 @Frequency 60 Hz	Silicone Rubber Insulator, 1000 V, 50% RH; ASTM D150
	0.10 @Frequency 60 Hz	0.10 @Frequency 60 Hz	High-K Stress Control Tube, 1000 V, 50% RH; ASTM D150
	0.90 @Frequency 60 Hz	0.90 @Frequency 60 Hz	High-K Stress Control Compound, 1000 V, 50% RH; ASTM D150
Track Resistance	18000 sec	18000 sec	3.5 kV; ASTM 2303

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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