Continuous-length thick-wall tubing for medium-voltage busbars. Shrinks clearance distances by up to 60%.
| Models | MPG10 |
|---|---|
| Recovered wall | 20.00–120.00 mm by size |
| Operating temp | -40 to +105 °C |
| Voltage class | 10 kV |
| Standards | GB/T 12706, UL 94 V-0, RoHS |
MPG10 is the medium-voltage grade of the MPG busbar tubing family: a thick-wall radiation-crosslinked polyolefin product formulated for insulating copper and aluminum busbars in 10 kV distribution equipment. When shrunk onto the busbar, it forms a conformal 2.0 mm insulation layer that resists tracking, cuts phase-to-phase and phase-to-ground clearance requirements, and protects against accidental contact.
MPG10 is the only MPG grade supplied in continuous 25 m lengths, so complete panel runs can be covered from a single spool with no joints. The tubing can be slipped over the busbar before or after joint assembly; upon heating to 110-130°C it recovers to grip the busbar surface without adhesive, relying on mechanical shrink force to maintain permanent contact.
| Property | Test Method | Requirement |
|---|---|---|
| Limited oxygen index (LOI) | — | >30 |
| Low-temperature flexibility | -40°C | No cracking |
| Flame retardancy | UL 94 | V-0 equivalent |
| Tracking resistance | IEC 60587 | 1A 4.5 kV (typical for crosslinked PO) |
| Property | Test Method | Requirement | Typical Value |
|---|---|---|---|
| Long-term operating temperature | — | 105°C | — |
| Tensile strength | ASTM D638 | ≥10.4 MPa | 11 MPa |
| Elongation at break | ASTM D638 | ≥300% | 350% |
| Volume resistivity | IEC 93 | ≥10¹⁴ Ω·cm | 2×10¹⁴ Ω·cm |
| Water absorption | ISO 62 | <0.5% | 0.15% |
| Tensile after aging (158°C, 7 d) | ASTM D638 | ≥10 MPa | 11 MPa |
| Elongation after aging (158°C, 7 d) | ASTM D638 | ≥300% | 310% |
| Dielectric strength | IEC 243 | >20 kV/mm | 23 kV/mm |
| Power frequency withstand | — | 45 kV, 60 s | Pass |
| Wall bias | — | ≤30% | 23% |
| Longitudinal change | — | -5% to +5% | -3% |
Internal test data. Questions on parameters? Contact our engineers.
| Model | Recovered Wall (mm) | Recovered ID (mm) | Expanded ID (mm) | Length (m) |
|---|---|---|---|---|
| MPG-L10-XX-20/10 | 2.0 ±0.1 | <10 | 20 ±2.0 | 25 |
| MPG-L10-XX-25/12 | 2.0 ±0.1 | <12 | 25 ±2.0 | 25 |
| MPG-L10-XX-30/15 | 2.0 ±0.1 | <15 | 30 ±2.0 | 25 |
| MPG-L10-XX-30/17 | 2.0 ±0.1 | <17 | 35 ±2.0 | 25 |
| MPG-L10-XX-40/20 | 2.0 ±0.1 | <20 | 40 ±2.0 | 25 |
| MPG-L10-XX-50/25 | 2.0 ±0.1 | <25 | 50 ±2.0 | 25 |
| MPG-L10-XX-60/30 | 2.0 ±0.1 | <30 | 60 ±2.0 | 25 |
| MPG-L10-XX-70/35 | 2.0 ±0.1 | <35 | 70 ±2.0 | 25 |
| MPG-L10-XX-80/40 | 2.0 ±0.1 | <40 | 80 ±2.0 | 25 |
| MPG-L10-XX-90/45 | 2.0 ±0.1 | <45 | 90 ±2.0 | 25 |
| MPG-L10-XX-100/50 | 2.0 ±0.1 | <50 | 100 ±2.0 | 25 |
| MPG-L10-XX-120/60 | 2.0 ±0.1 | <60 | 120 ±2.0 | 25 |
Standard color: black. Custom colors available — contact our sales team.
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Still deciding? Contact our engineers.
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