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CBTH

Heavy wall crosslinked Polyolefin bus bar tubing

Heavy wall anti-track heat shrinkable tubing specifically designed for insulating medium voltage bus bars.

Features and Benefits

  • Halogen free
  • Reduces bus bar clearance requirements
  • Protects against accidental flashover
  • Anti-track
  • CBTH heavy wall tubing rated to 36 kV
  • Shrink ratio: 3:1
  • Continuous operating temperature: -40°C to 125°C
  • Shrink temperature: 120°C

Standards

  • ANSI C37.20.2
  • ANSI C37.20.3
  • UL file # E205844

Typical Applications

  • Insulation of medium voltage bus bars in switchgear equipment, transformers and generators

Ordering

Select a dimension which will shrink snugly over the component to be covered. If recovery is restricted the resultant wall thickness will be less than specified.
  • Select options:
    • Color: Red (RD)
  • Please specify the product name, order number and options you require
  • Order example: CBTH 2700, 68.0/22.1, red

Please contact your Customer Service Representative for information on custom colors, sizes, lengths and material data sheet.

Product Properties

Order Number Expanded Recovered Delivery Units
  Internal Diameter
(Min) D
Internal Diameter
(Max) d
Total Wall Thickness
(Nom) W
Lengths
  MM IN MM IN MM IN M FT
1100 27.9 1.098 8.9 0.350 3.90 0.154 15.24 50
2000 50.8 2.000 16.0 0.630 4.10 0.161 15.24 50
2700 68.0 2.677 22.1 0.870 4.10 0.161 15.24 50
3500 89.9 3.539 29.9 1.177 4.20 0.165 15.24 50
4700 119.9 4.720 39.9 1.571 4.20 0.165 15.24 50
6600 167.6 6.598 65.0 2.559 2.70 0.106 15.24 50
Order Number Application Ranges
  Rectangular Bus Bars Round Bus Bars
  Min Max Min - Max
  MM IN MM IN MM IN
1100 9.5 x 6.4 0.374 x 0.252 12.7 x 15.9 0.500 x 0.626 10.6 - 17.7 0.417 - 0.697
2000 25.4 x 6.4 1.000 x 0.252 34.9 x 15.9 1.374 x 0.626 19.3 - 33.0 0.760 - 1.299
2700 34.9 x 6.4 1.374 x 0.252 40.8 x 15.9 1.606 x 0.626 26.1 - 43.1 1.028 - 1.697
3500 50.8 x 6.4 2.000 x 0.252 76.2 x 15.9 3.000 x 0.626 35.8 - 58.4 1.409 - 2.299
4700 69.8 x 6.4 2.748 x 0.252 111.1 x 15.9 4.374 x 0.626 47.7 - 81.2 1.878 - 3.197
6600 107.9 x 6.4 4.248 x 0.252 177.8 x 15.9 7.000 x 0.626 69.5 - 124.4 2.736 - 4.898

Application ranges noted above selected to obtain minimum insulation thickness required to meet ANSI C37.20.2 withstands requirements at bus bar spacing noted below. These spacings were determined from a limited number of test configurations. Due to the wide variety of bus bar configurations, these spacings should not be employed without actual testing by the user.

Clearances with Insulation

System Voltage BIL kV CBTM Medium Wall Tubing
    P to P P to G
    MM IN MM IN
5 kV 95.0 55.0 2.165 66.0 2.598
25 kV 125.0 71.0 2.795 101.0 3.976
36 kV 150.0 142.0 5.591 190.0 7.480

P to P: Phase to Phase orientation
P to G: Phase to Ground orientation
Spacing based on metal to metal dimension prior to insulation Spacing based on insulation wall thickness per application range of above table.

Market / Applications

  • Industrial
  • OEM
  • Power Distribution
  • Power Distribution - MV
  • Utility

Documentation

    The product does not currently have any associated documents. Please check back at a later date.
Version: 01 2018/JAN/02
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