BBT Heat-Shrinkable Bus Bar Tubing
BBT(1kV/10kV) is a well insulated and track-resistant, heat-shrinkable, polyolefin protective sleeve for bus bars. It is widely used to protect the rectangular, square and round bus bars found in low or medium voltage switching equipment.
| Specifications |
Item |
Test Method |
Specifications |
Shrink Temperature (°C) |
|
110 |
Operating Temperature Range (°C) |
|
125 |
Tensile Strength (Mpa) |
ASTM D2671 |
≥10 |
Elongation at break (%) |
ASTM D2671 |
≥450 |
Aging in Circulating-air Oven |
ASTM D2671 |
136.0±1.0°C, 168hrs |
After aging |
Tensile Strength (Mpa) |
ASTM D2671 |
≥10 |
Elongation at break (%) |
ASTM D2671 |
≥400 |
Flexibility at -40°C, 4h |
ASTM D2671 |
No cracking |
Volume Resistance (Ω .cm) |
ASTM D876 |
≥1013 |
Dielectric Strength(15kV/mm) |
ASTM D2671 |
≥15 |
Heat shock |
200°C±3°C, 4h |
No cracking |
Oxygen index |
ASTM D2863 |
≥30 |
Water absorption |
ASTM D570A |
<0.5% |
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| Size for BBT-1kV |
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| Size (inches) |
Size (mm) |
Inside Dia. (mm) |
Wall Thickness |
Inside Dia. (mm) |
Wall Thickness |
Cable Range (mm2) |
| 1-1/4" |
30/15 |
31.5±1.0 |
0.5±0.15 |
15 |
1±0.15 |
30 |
| 1-3/8" |
35/16 |
37±1.5 |
0.5±0.15 |
16 |
1±0.15 |
40 |
| 1-9/16" |
40/20 |
40.5±1.5 |
0.5±0.15 |
20 |
1±0.15 |
40 |
| 2" |
50/25 |
50.5±2 |
0.5±0.15 |
25 |
1±0.15 |
50 |
| 2-3/8" |
60/30 |
60±3 |
0.8±0.2 |
30 |
1.3±0.2 |
60 |
| 2-3/4" |
70/32 |
70±3 |
0.8±0.2 |
32 |
1.5±0.2 |
80 |
| 3" |
80/40 |
80±3 |
0.8±0.3 |
40 |
1.5±0.3 |
80/100 |
| 3-1/2" |
90/43 |
90±4 |
0.8±0.3 |
43 |
1.5±0.3 |
100 |
| 4" |
100/50 |
100±4 |
0.8±0.3 |
50 |
1.5±0.3 |
100/120 |
| 5" |
120/60 |
120±4 |
0.8±0.3 |
60 |
1.5±0.3 |
150 |
| 6" |
150/75 |
150±4 |
0.8±0.3 |
75 |
1.5±0.3 |
180 |
| 7" |
180/70 |
180±4 |
1.0±0.3 |
90 |
1.8±0.3 |
210 |
| 9" |
235/105 |
235±4 |
1.0±0.3 |
118 |
1.8±0.3 |
250 |
| Size for BBT-10kV |
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| Size (inches) |
Size (mm) |
Inside Dia. (mm) |
Wall Thickness |
Inside Dia. (mm) |
Wall Thickness |
Cable Range (mm2) |
| 3/4" |
20/9 |
20±0.8 |
1±0.2 |
9 |
2.5±0.2 |
20 |
| 1-1/4" |
30/13 |
30±0.8 |
1±0.2 |
13 |
2.5±0.2 |
30 |
| 1-1/2" |
40/15 |
40±1.0 |
1.2±0.2 |
15 |
2.5±0.2 |
40 |
| 2" |
50/20 |
50±2.0 |
1.2±0.2 |
20 |
2.8±0.2 |
50 |
| 2-3/8" |
60/24 |
65±3.0 |
1.2±0.2 |
24 |
2.8±0.2 |
60 |
| 3" |
80/32 |
80±4.0 |
1.2±0.3 |
32 |
2.8±0.2 |
80/100 |
| 4" |
100/40 |
100±4.0 |
1.2±0.3 |
40 |
2.8±0.2 |
100/120 |
| 5" |
120/48 |
120±4.0 |
1.2±0.3 |
48 |
2.8±0.2 |
150 |
| 6" |
150/60 |
150±4.0 |
1.2±0.3 |
60 |
2.8±0.2 |
200 |
| 7" |
175/75 |
175±4.0 |
1.5±0.3 |
88 |
3.2±0.3 |
210 |
| 8" |
210/85 |
210±4.0 |
1.5±0.3 |
105 |
3.2±0.3 |
240 |
