Test Results for 400 Hz and 28 V DC GPU Cables with PUR and Special Polymer Outer Jackets
Abrasion resistance is an important property of GPU cables used for aircraft ground power supply, as they are repeatedly exposed to mechanical stress. Particularly in mobile Ground Power Unit applications, cables are frequently moved, routed across the ground and exposed to friction and mechanical loads.
High abrasion resistance helps extend cable service life and supports reliable operation even under recurring mechanical stress.
Our tested 400 Hz and 28 V DC GPU cables with PUR and special polymer outer jackets were tested for abrasion resistance in accordance with UL 2556:2021 and JIS C3005:2014 (Japanese Industrial Standards). The tests were independently conducted by TÜV and UL (Underwriters Laboratories).
Test results
(cycles to failure)
All tested GPU cables with PUR and special polymer outer jackets met the requirements of the abrasion tests performed. To demonstrate the difference between the materials, the UL test was continued until the cable failed, even after the standard requirements had been met.
The results are:
| Cable Type | Test Result |
|---|---|
| H07RN-F (rubber) | 5.108 cycles |
| SAB PUR GPU cable | 63.200 cycles |
Result: The SAB PUR GPU cable achieved more than twelve times as many cycles before failure as the H07RN-F rubber cable tested for comparison.
Conclusion
The results demonstrate the high abrasion resistance of the tested PUR GPU cable under the mechanical stress applied in the test. This property is particularly relevant for mobile GPU applications, where cables are repeatedly moved across the ground and exposed to mechanical stress.
For aircraft ground power applications, we also supply the corresponding 400 Hz and 28 V DC cables as customised cable assemblies with connectors and additional connection components.
Do you have any questions about our 400 Hz cables? Please contact the SAB team SAB team directly.