XLPE Litz Cable for Electric Bus using wireless power

A. Cable Construction
– AWG38(0.10mm) x 15,750 strands(19 bundles of Litz wire) + PET film + non-woven binder tape + XLPE extrusion(Orange, 2.4mm thick for isolation & flame retardant) for wireless power of current supplying system on very high frequency.

Litz Cable before XLPE extrusion

Litz Cable before XLPE extrusion

B. Inspection DATA of Enamel copper conductor, before XLPE extruded
1) Bare conductor diameter : 0.10mm
2) Copper conductor with enamel insulation : 0.114~0.120mm (average 1.116mm)
3) Litz OD : approx. 21mm
4) Solderbility : at 380~430℃
5) UL approved, MW-79C, 155℃, F class, single grade
Litz Cable with PET film before XLPE extrusion
Litz Cable with PET film before XLPE extrusion 01

C. Inspection DATA after XLPE extrusion
1) Dielectric strength : bear up against at 10kV/5min. (AC) in water
2) Insulation resistance : 90℃ 3.67㏁/km ↑ (20℃)
3) Retardant test(Max. 2.5m) : It was extinguished at 1.15m.
4) 1st XLPE, cross-linked polyethylene
– Tensile Strength : Min. 12.5 (N/㎟)
– Elongation : 200 (%)
– Hot : Max. 175 (%)
– Set : Max. 15 (%)
5) 2nd XLPE, halogen free
– Tensile Strength : Min. 9.0 (N/㎟)
– Elongation : 125 (%)
– Hot : Max. 175 (%)
– Set : Max. 15 (%)
6) Shrinkage test (130℃/1hr) : Max. 4 (%)
7) 1st absorption test (85℃/336hr) : Max. 1(mg/㎠)
8) 2nd absorption test (70℃/24hr) : Max. 10(mg/㎠)