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	Original Value	Comments

Tensile Strength at Break	5.86 MPa	Silicone Rubber Insulator; ASTM D412
	10.3 MPa	High-K Stress Control Tube; ASTM D412
100% Modulus	0.000896 GPa @Strain 100 %	Silicone Rubber Insulator; ASTM D412
	0.00110 GPa @Strain 100 %	High-K Stress Control Tube; ASTM D412
300% Modulus	0.400 ksi @Strain 300 %	Silicone Rubber Insulator; ASTM D412
	0.500 ksi @Strain 300 %	High-K Stress Control Tube; ASTM D412

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

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PMM35160 / 169907

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