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Aug 05 2025
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Manufactured from cross linked polyolefin.
Used to offer insulation protection for busbar in switchgear and substation.
Protects against short circuit and electrical leakage caused by small animals.
Reduces busbar clearance requirements. RoHS compliant.
Shrink temperature: start at 70℃, and fully recovered at 130℃.
Color: yellow, red, green, blue, black.
10kV WMPG Series
| Spec. | As Supplied/mm | After Recovered/mm | Standard Length /mm(±5) | Application /mm | |||
| ID (Min) | Wall Thickness (±20%) | ID (Max) | Wall Thickness (±10%) | Width of Rectangular Busbar | Diameter of Circular Busbar | ||
| WMPG-20 | 20 | 1.0 | 10 | 2.4 | 1000 | 20 | 15 |
| WMPG-25 | 25 | 1.0 | 12 | 2.4 | 1000 | 25 | 15 |
| WMPG-30 | 30 | 1.1 | 14 | 2.4 | 1000 | 30 | 20 |
| WMPG-40 | 40 | 1.0 | 17 | 2.4 | 1000 | 40 | 30 |
| WMPG-50 | 50 | 1.1 | 22 | 2.7 | 1000 | 50 | 35 |
| WMPG-65 | 65 | 1.1 | 28 | 2.7 | 1000 | 65 | 45 |
| WMPG-75 | 75 | 1.1 | 32 | 2.7 | 1000 | 75 | 50 |
| WMPG-85 | 85 | 1.1 | 37 | 2.7 | 1000 | 85 | 65 |
| WMPG-100 | 100 | 1.1 | 43 | 2.7 | 1000 | 100 | 75 |
| WMPG-120 | 120 | 1.1 | 53 | 2.7 | 1000 | 120 | 85 |
| WMPG-150 | 140 | 1.1 | 65 | 2.7 | 1000 | 150 | 100 |
| WMPG-180 | 180 | 1.1 | 75 | 2.7 | 1000 | 180 | 125 |
| WMPG-210 | 200 | 1.1 | 88 | 2.7 | 1000 | 200 | 150 |
| WMPG-230 | 220 | 1.0 | 88 | 2.7 | 1000 | / | / |
| WMPG-250 | 250 | 1.5 | 107 | 3.6 | 1000 | / | / |
| WMPG-300 | 290 | 1.3 | 107 | 3.8 | 1000 | / | / |
| WMPG-325 | 325 | 1.1 | 107 | 3.8 | 1000 | / | / |
| WMPG-350 | 350 | 1.2 | 159 | 2.7 | 1000 | / | / |
| WMPG-400 | 400 | 1.2 | 185 | 2.7 | 1000 | / | / |
| WMPG-500 | 500 | 1.2 | 210 | 3.0 | 1000 | / | / |
35kV WMPG Series
| Spec. | As Supplied/mm | After Recovered/mm | Standard Length /mm(±5) | Application /mm | |||
| ID (Min) | Wall Thickness (±20%) | ID (Max) | Wall Thickness (±10%) | Width of Rectangular Busbar | Diameter of Circular Busbar | ||
| WMPG-20 | 20 | 2.4 | 10 | 4.5 | 1000 | 20 | 15 |
| WMPG-25 | 25 | 2.0 | 10 | 4.5 | 1000 | 20 | 15 |
| WMPG-30 | 28 | 2.4 | 14 | 4.5 | 1000 | 30 | 20 |
| WMPG-40 | 38 | 2.2 | 17 | 4.5 | 1000 | 40 | 30 |
| WMPG-50 | 48 | 2.2 | 21 | 4.8 | 1000 | 50 | 35 |
| WMPG-65 | 65 | 2.2 | 27 | 5.0 | 1000 | 65 | 45 |
| WMPG-75 | 73 | 2.2 | 31 | 5.0 | 1000 | 75 | 50 |
| WMPG-85 | 85 | 2.0 | 32 | 5.0 | 1000 | 85 | 55 |
| WMPG-100 | 100 | 2.0 | 38 | 5.0 | 1000 | 100 | 75 |
| WMPG-120 | 120 | 2.1 | 50 | 5.0 | 1000 | 120 | 85 |
| WMPG-150 | 140 | 2.1 | 59 | 5.0 | 1000 | 150 | 105 |
| WMPG-180 | 180 | 2.3 | 71 | 5.5 | 1000 | 180 | 125 |
| WMPG-210 | 200 | 2.2 | 88 | 5.0 | 1000 | 200 | 140 |
| WMPG-230 | 220 | 2.0 | 88 | 5.0 | 1000 | / | / |
Note: Size with * are not standard stock items.
Technical Data
| Property | Test Method | Standard Value |
| Heat Shock | 160℃, 4h | No Crack |
| Tensile Strength | ASTM-D-638 | ≥ 8MPa |
| Elongation at Break | ASTM-D-638 | ≥ 300% |
| Tensile Strength Variation After Heat Aging(130℃x168h） | ASTM-D-5510 | ≤± 20% |
| Elongation at Break Variation After Heat Aging(130℃x168h） | ASTM-D-5510 | ≤± 20% |
| Flammability（Oxygen Index） | IEC 4589 | ≥30% |
| Hardness（Shore A） | ISO 868 | ≤90 |
Electrical Property of Heat Shrink Busbar Tube
| Item | Test Method | Standard Value | |
| 10kV | 35kV | ||
| Volume Resistivity | IEC 60093 | ≥1x1014Ω·cm | |
| Dielectric Strength | IEC 60243 | ≥25kV/mm | |
| Power frequency voltage withstanding | DL/T 1059 | 42kV | 95kV |
| Impulse voltage | DL/T 1059 | 75kV | 185kV |
