CBTH – EMAR

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

Market/Applications

  • OEM
  • Power Distribution
  • Industrial
  • Power Distribution – MV
  • Utility

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.

Order NumberExpandedRecoveredDelivery Units
Internal Diameter
(Min) D
Internal Diameter
(Max) d
Total Wall Thickness
(Nom) W
Lengths
mminmminmminmft
110027.91.0988.90.3503.900.15415.2450
200050.82.00016.00.6304.100.16115.2450
270068.02.67722.10.8704.100.16115.2450
350089.93.53929.91.1774.200.16515.2450
4700119.94.72039.91.5714.200.16515.2450
6600167.66.59865.02.5594.200.16515.2450
Order NumberApplication Ranges
Rectangular Bus BarsRound Bus Bars
MinMaxMin – Max
mminmminmmin
11009.5 x 6.40.374 x 0.25212.7 x 15.90.500 x 0.62610.6 – 17.70.417 – 0.697
200025.4 x 6.41.000 x 0.25234.9 x 15.91.374 x 0.62619.3 – 33.00.760 – 1.299
270034.9 x 6.41.374 x 0.25240.8 x 15.91.606 x 0.62626.1 – 43.11.028 – 1.697
350050.8 x 6.42.000 x 0.25276.2 x 15.93.000 x 0.62635.8 – 58.41.409 – 2.299
470069.8 x 6.42.748 x 0.252111.1 x 15.94.374 x 0.62647.7 – 81.21.878 – 3.197
6600107.9 x 6.44.248 x 0.252177.8 x 15.97.000 x 0.62669.5 – 124.42.736 – 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 VoltageBIL kVCBTM Medium Wall Tubing
P to PP to G
mminmmin
15 kV95.055.02.16566.02.598
25 kV125.071.02.795101.03.976
36 kV150.0142.05.591190.07.480

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.