Thick wall heat shrinkable tubing for insulating and protecting bus bar against flashover caused by accidental bridging. Allows the air spacing between bus bar to keep at minimum when space is limited in switchgear cabinets. Easy to position on variety of curved and bent bus bar of both rectangular and circular shapes.
Features and Benefits
★Reduces bus bar clearance requirement.
★Provides more freedom in designing switchgear cabinets when space is limited.
★Suitable for insulating bus bar up to 10kv.
★Protects against short circuit and electrical leakage caused by small animals.
★Protects against corrosion and other contaminants that may cause accidental flashover.
★Available in continuous length for convenient and economical installation.
★Highly flame retardant.
★RoHS compliant, halogen free.
Shrink physical properties
★Operating Temperature: -40℃ to 105℃
★Shrink Temperature: 125℃
Color selection
★Black, Red, Yellow, Blue, Green or Other color
Technical Details
| Test Item |
Test Method |
Typical Value |
| Tensile strength |
ASTM D2671 |
≥12MPa |
| Thermal endurance |
IEC 216 |
105℃ |
| Breakdown elongation |
ASTM D2671 |
≥400% |
| Density |
ASTM D2671 |
1.21g/cm3 |
Accelerated aging
at 136℃ for 168hrs |
Tensile strength |
ASTM D2671 |
≥10MPa |
| Breakdown elongation |
≥300% |
| Dielectric strength |
2mm/0.08inch wall |
ASTM D2671 |
≥20KV/MM |
| 2.5mm/0.10inch wall |
≥17KV/MM |
| Low temperature flexibility at -40℃ for 4hrs |
ASTM D2671 |
No cracking |
| Heat shock at 200℃ for 4hrs |
ASTM D2671 |
No drop/No flow |
| Flammability |
ASTM D2863 |
≥28 |
| Smoke index |
- |
Less than 120 |
| Volume resistivity |
ASTM D2671 |
≥1014Ω.cm |
| Water absorption at 23℃ for 336hrs |
ASTM D570 |
≤0.5% |
| Resistance to selected fluids at 23℃ for 168hrs |
Tensile strength |
IEC 60684-2 |
≥8MPa |
| Breakdown elongation |
≥250% |
| Copper corrosion at 158℃ for 168hrs |
IEC60684-3 |
Pass |
Long term aging at 120℃ for 3000hrs
Breakdown elongation |
IEC60684-2 |
≥175% |
| Color fastness to light |
IEC60684-3 |
Compare between exposed and unexposed part : the color does not change |
Product Selection
Product
Code |
Before Shrink |
After Shrink |
Standard
Package
(m/roll) |
| I.D.(mm)≥ |
Wall
Thickness(mm) |
I.D.(mm)≤ |
Wall
Thickness(mm) |
| HVIT35L-2-20/10 |
20 |
1.60 |
10 |
2.80 |
20 |
| HVIT35L-2-25/12 |
25 |
1.60 |
12 |
3.00 |
20 |
| HVIT35L-2-30/15 |
30 |
1.60 |
15 |
3.00 |
20 |
| HVIT35L-2-40/20 |
40 |
1.60 |
20 |
3.00 |
20 |
| HVIT35L-2-45/22 |
45 |
1.60 |
22 |
3.00 |
20 |
| HVIT35L-2-50/25 |
50 |
1.65 |
25 |
3.10 |
20 |
| HVIT35L-2-60/30 |
60 |
1.65 |
30 |
3.20 |
20 |
| HVIT35L-2-70/35 |
70 |
1.65 |
35 |
3.20 |
20 |
| HVIT35L-2-80/40 |
80 |
1.65 |
40 |
3.20 |
20 |
| HVIT35L-2-90/45 |
90 |
1.65 |
45 |
3.20 |
20 |
| HVIT35L-2-100/50 |
100 |
1.65 |
50 |
3.20 |
20 |
| HVIT35L-2-120/60 |
120 |
1.65 |
60 |
3.20 |
20 |
| HVIT35L-2-150/60 |
150 |
1.65 |
60 |
4.00 |
20 |
| HVIT35L-2-180/72 |
180 |
1.65 |
72 |
4.00 |
20 |
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