High Voltage Busbar Heat Shrinkable Tube
Heat shrinkable busbar protection tube is used for busbar insulation protection of substation and high and low voltage switch cabinet. Heat shrinkable busbar protection tube is capable of making switch cabinet compact, like reducing the interval distance, to prevent accidental short circuit fault.
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FEATURES
• Shrinkable ratio : 2.5:1
• Flame retardant
• Reduces bus bar clearance requirements
• Protect against accidental flashover
• Anti-track
• Halogen free
• Resistant to UV rays
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TYPICAL APPLICATIONS
Material data: Polyolefin
Operating temperature: -40˚C~110˚C
Minimum shrink temperature: 80˚C
Full recovery temperature: Above 120˚C
Standard color: Red, yellow and green (Other colors, such as black, blue, etc can be customized)
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TECHNICAL DATA
| Property | Requirements | Testing standard |
| Tensile strength/ MPa | ≥8.0 | ASTM D 2671 |
| Elongation at break/ % | ≥300 | ASTM D 2671 |
| Tensile strength after aging/ MPa | ±20% | ASTM D 2671 (130℃X168h) |
| Elongation at break after aging/ % | ±20% | ASTM D 2671 (130℃X168h) |
| Longitudinal shrinkage/ % | ±10% | ASTM D 2671 |
| Radical shrinkage/ % | Should be not less than 65% | ASTM D 2671 |
| Eccentricity/ % | Should be not less than 50% | UL 224 |
| Water absorption capacity/ % | ≤0.5 | ISO 62-1980 |
| Heat shock (160℃, 4h) | No cracking | ASTM D 2671 (160℃,4h) |
| Low temperature resistance (below-40℃) | No cracking | ASTM D 2671 (-40℃,4h) |
| Breakdown strength/ kV/mm | ≥20 | IEC 60243-1-2013 |
| Volume resistivity/ Ω·cm | ≥4.3×1014 | IEC 60093 : 1980 |
| Hardness (Shore A) | ≤90 | ISO 868 : 2003 |
| Permittivity | ≤3 | IEC 60247-1978 |
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DIMENSIONS
| Part no. | Nominal size (mm) | Size busbar L+T | Before recovery(mm) | After recovery(mm) | Standard length (m) | ||
| ID(D) | Wall thickness | ID(d) | Wall thickness | ||||
| SHTM-0300 | 30 | 30x5 30x10 | 31±2.0 | 1.60±0.5 | 12 | 4.0±0.4 | 15 |
| SHTM-0400 | 40 | 40x10 50x2.5 | 41±2.0 | 1.60±0.5 | 16 | 4.0±0.4 | 15 |
| SHTM-0500 | 50 | 50x5 50x10 | 52±3.0 | 1.60±0.5 | 20 | 4.0±0.4 | 15 |
| SHTM-0650 | 65 | 60x5 60x10 | 67±3.0 | 1.60±0.5 | 26 | 4.0±0.4 | 15 |
| SHTM-0750 | 75 | 80x5 75x10, 80x10 | 77±3.0 | 1.60±0.5 | 30 | 4.0±0.4 | 15 |
| SHTM-1000 | 100 | 120x10 125x10 | 102±4.0 | 1.60±0.5 | 40 | 4.0±0.4 | 15 |
| SHTM-1200 | 120 | 140x10 150x6, 150x10 | 122±4.0 | 1.60±0.5 | 48 | 4.0±0.4 | 15 |
| SHTM-1500 | 150 | 160x10 180x10, 190x5.5 | 152±4.0 | 1.60±0.5 | 60 | 4.0±0.4 | 15 |
| SHTM-1800 | 180 | 200x10 | 180±5.0 | 1.60±0.5 | 72 | 4.0±0.4 | 15 |
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