3M BBI-A Shrinkable Tubing for Bus Bar

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3M BBI-A Shrinkable Tubing for Bus Bar
Categories:	Polymer; Thermoset
Material Notes:	3M Heat Shrinkable Tubing for Bus Bar BBI-A Series is designed for insulating rectangular, square and round bus bar rated from 5 kV through 35 kV. It will also cover and insulate inline bolted connections of rectangular bus bars. The tubing meets the requirements of ANSI/IEEE Standard C37.20. The standard tubing lengths are 20 ft (6.1 m) and 50 feet (15.2m). 3M BBI-A Tubing is made of a specially formulated cross-linked polyolefin. The tubing is colored orange-red. The material has high resistance to splitting, good solvent resistance to splitting, good solvent resistance and excellent tracking resistance properties. The tubing shrinks easily with industry standard methods, forming an aesthetically appealing insulation cover. Information provided by 3M
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Physical Properties	Original Value	Comments

Water Absorption	0.30 %	7 days at RT; MIL-I-23053/15A

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	5.60 - 16.5 MPa	Fluid Resistance, 24 hrs immersed; MIL-I-23053/15A
	15.0 MPa	ASTM D257
	10.0 MPa @Treatment Temp. 175 °C, Time 605000 sec	Accelerated Aging; MIL-I-23053/15A
Elongation at Break	575 %	ASTM D638
	400 % @Treatment Temp. 175 °C, Time 605000 sec	Accelerated Aging; MIL-I-23053/15A

Electrical Properties	Original Value	Comments
Dielectric Strength	287 - 451 kV/in	Fluid Resistance, 24 hrs immersed; MIL-I-23053/15A
	550 kV/in @Thickness 1.78 mm	ASTM D149
Track Resistance	25200 sec	1 in @ 2.5 kV; ASTM D2303

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PMM35208 / 169955

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