QBM, QBT

HEAT SHRINK MEDIUM VOLTAGE INSULATION TUBING
QBM, QBT
HALOGEN FREE, HEAT SHRINKABLE, 11-36kV
BUS BAR INSULATION PROTECTION TUBING
SHRINK RATIO 2.5:1
Features/Applications
Made from specially formulated radiation cross-linked halogen-free
compounds. The carefully produced product can provide high resistance
to tracking and arcing. Used to enhance the insulation properties of bus
bar in switchgear and substations. The continuous length of supplied
products makes it more convenient and economical.
Operating temperature: -55°C to +105°C
Minimum shrink temperature: 110°C
RoHS Compliant
Halogen free
Technical Data
Property
Test Method
Typical Data
Tensile Strength
ASTM D 2671
> 11.8 MPa
Tensile Strength After Aging (120°C, 168 hrs.)
ASTM D 2671
> 10MPa
Longitudinal Shrinkage
ASTM D 2671
0 to -10%
Elongation at Break (120°C, 168 hrs.)
ASTM D 2671
> 700%
Elongation at Break After Aging
ASTM D 2671
> 500%
Dielectric Strength
IEC 243
> 20kV/mm
Dielectric Constant
QBT - IEC 250
Max. 3.0
Volume Resistance
IEC 93
> 1013 Ω.cm (min.)
Flammability (Oxygen Index)
QBM - ASTM D 2863, QBT - ASTM D 4589
> 25
Copper Corrosion (QBT) (120°C, 168 hrs.)
ASTM D 2671
No corrosion
Cold Bend (QBT) (-40°C, 4 hrs.)
ASTM S 2671
No cracking
Water Absorption (23°C, 14 days)
ISO 62
< 0.5%
Product Dimensions
Size
(mm)
QBM-Medium Wall Bus Bar Tubing
As Supplied (mm)
11kV-24kV
After Recovered (mm)
Inside Diameter
(min.)
Continuous Length Tubing
25/10
25
30/12
30
35/14
35
40/16
40
50/20
50
65/25
65
75/30
75
100/40
100
Tubing
Shape
Inside Diameter
(max.)
Wall Thickness
(min)
10
12
14
16
20
25
30
40
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Flat
Flat
Flat
Flat
Flat
Flat
Flat
Flat
60
70
75
75
3.0
3.0
3.3
3.3
Flat
Flat
Flat
Flat
Cut Length Tubing
150/60
180/70
205/75
235/75
150
180
205
235
Product Dimensions
Size
(mm)
18/6
30/12
40/16
50/20
65/25
75/30
100/40
120/50
As Supplied
(mm)
QBT-Medium Wall Bus Bar Tubing
After Recovered (mm)
Inside
Diameter
(min.)
Inside
Diameter
(max.)
Wall Thickness
(min)
18
30
40
50
65
75
100
120
6
12
16
20
25
30
40
50
2.0
2.3
2.5
2.5
2.5
2.6
2.6
3.0
Rectangular
Bus Bar
(mm)
6.4
15.0
27.0
32.0
45.0
48.0
73.0
69.8
19
30
45
51
75
85
120
111
Standard
Spool
*(SS)
(Meter)
30
30
30
30
15
15
15
15
Standard Packaging
*(QB) (mm)
1000
1000
1000
1000
11kV, 24kV, 36kV
Round
Bus Bar
(mm)
6.8
12.7
17.0
21.0
26.0
31.0
45.0
50.0
15.0
25.4
32.0
40.0
52.0
60.0
80.0
90.0
Standard
Spool
*(SS)
(Meter)
15
15
15
15
15
15
15
15
Notes:
1.
* See Part Number Guide for standard packaging codes.
2.
Special sizes, packaging, colors and cut pieces are available upon request.
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