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Product

28.5 V DC & 270 V DC Aircraft Ground Power (GPU) CablesMIL-STD-704F · 270 V DC (±135V)F-35 / F-22 Fighter GPU Cable2×35–95 mm² + PE + Screened Control

GP 270 V DC 270 V DC Aircraft Ground-Power CableMIL-STD-704F / SAE AS5756 270 V DC (±135 V DC) 2×35–2×95 mm² + ground + screened pilots

GP 270 V DC Aircraft Ground-Power Cable is engineered to MIL-STD-704F and SAE AS5756 for 5th-generation tactical fighter aircraft (F-35 Lightning II, F-22 Raptor) and advanced military UAV/avionics converters operating on 270 V DC (±135 V DC), combining

Oil-resistant
EMC screen
Ozone, UV & moisture
Flame-retardant
Order designation
GP 270 V DC 2×50 + 1G25 + (6×1.5)C mm²
Outer Ø ≈
35.2 mm
Copper weight
1,320 kg/km
Total weight ≈
2,120 kg/km
Min. bend R (fixed)
211 mm
All sizes (5)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
System voltage
270 V DC
±135 V DC mid-point earthed (1 kV
Continuous power
70 kW to 150 kW
260 A to 550 A HVDC continuous
Power & PE cores
2×35–95 + 1G
Class 6 extra-flexible tinned copper
Control / sense
4 to 10 Screened
Interlock, remote sense & CAN/fault
Apron jacket
JP-8 / Skydrol
-40 °C to +90 °C flight-line / carrier
Test voltage
3.5 kV AC
High-potential HVDC dielectric test

Typical values for this cable type, based on MIL-STD-704F / SAE AS5756 / ISO 6858 (270 V DC / ±135 V DC GPU) — confirmed in the datasheet and quotation for your order.

Application fit

Is GP 270 V DC right for your machine?

Purpose-built for military flight-line 270 V DC solid-state GPU converters, naval aircraft-carrier deck power pits, and hangar maintenance bays servicing F-35A/B/C, F-22, and 270 V DC More-Electric

Motorised monospiral reel

Suitable

Torque-balanced lay-up and synthetic reinforcing braid wind smoothly on hangar pit and flight-line GPU reels.

Self-supporting pendant & push-button drop

Suitable

Class 6 tinned copper stranding flexes easily when connecting heavy MIL-STD-704F 270 V DC aircraft receptacles.

Immersion & wet locations

Suitable

Withstands naval flight-deck salt spray, JP-5/JP-8 jet fuel, polyalphaolefin (PAO) coolant, and Skydrol.

Energy chain / drag chain

Suitable

Suitable for telescopic hangar pit retrievers and under-floor cassette systems.

Typical machinesF-35A/B/C & F-22 fighter ground powerNaval aircraft carrier flight-deck pits270 V DC solid-state GPU convertersAerospace HVDC power lab test stands

Construction

Layer by layer

Two Class 6 extra-flexible tinned copper HVDC power conductors (+135 V DC and -135 V DC / 270 V DC, 35 to 95 mm²), one Class 6 equipment

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Class 6 extra-flexible tinned copperIEC 60228 Class 6 / ASTM B33 rope-lay tinned copper HVDC power cores, ground core &MIL-STD-704F / SAE AS5756
290 °C HVDC-grade EPR / XLPO insulation1.0/1.5 kV DC rated ethylene-propylene elastomer (EPR) or cross-linked polyolefin onSAE AS5756
3Tinned copper screen over control/sense≥ 85 % tinned copper wire braid isolating 28 V interlock & remote voltage-sense wiresMIL-STD-704F EMC
4Inner elastomeric bedding +Crush-resistant elastomeric inner jacket with embedded high-tenacity anti-torsion yarnISO 6858
5Flight-line outer sheath (PUR / CPE)JP-5/JP-8 fuel-, PAO coolant-, Skydrol-, and salt-spray-resistant polyurethane (PUR) orSAE AS5756 / MIL-DTL-3432

GP 270 V DC Standard Fighter Feeder (2×50 + 1G25 + Screened Control)

70–90 kW 270 V DC (±135 V DC) composite flight-line cable for F-35 / F-22 mobile and fixed GPUs.

GP 270 V DC High-Capacity Feeder (2×70 or 2×95 + 1G35/50 + Screened Control)

120–150 kW long-reach hangar and carrier-deck 270 V DC feeder minimizing HVDC voltage drop.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on MIL-STD-704F / SAE AS5756 / ISO 6858 (270 V DC / ±135 V DC GPU). Values for your order are confirmed in the datasheet and quotation.

Electrical

Nominal system voltage
270 V DC (±135 V DC wrt chassis ground per
Cable insulation voltage rating
0.6/1 kV AC / 1.5 kV DC
Routine dielectric test voltage
3,500 V AC (power) · 1,500 V AC (control
Control screen coverage
≥ 85 % tinned copper braid over
Max. conductor operating temp.
+90 °C continuous · +250 °C short-circuit

Thermal

Operating temperature range
-40 °C to +90 °C (-55 °C arctic cold option)
Dynamic reeling temperature
-35 °C to +80 °C

Mechanical

Min. bending radius
5 × D static · 6 × D dynamic reeling
Crush & deck drag resistance
Reinforced double-sheath withstands fighter

Resistance

Military fluid resistance
JP-5, JP-8, Jet-A1, PAO dielectric coolant
Flame & halogen-free options
IEC 60332-1-2 · MIL-DTL-3432 · LSZH

Reference standards

Primary specification
MIL-STD-704F (270 V DC) · SAE AS5756 · ISO
Safety interlock architecture
Supports pilot loop, ground-check &

Identification

Power & ground identification
+135V (Red), -135V (Black/Blue), Chassis PE
Outer sheath colour
High-Visibility Yellow, Orange, or Military

Sizes

5 standard configurations (GP 270 V DC)

Nominal dimensions, copper weights, DC resistance and current ratings for GP 270 V DC per MIL-STD-704F / SAE AS5756 / ISO 6858 (270 V DC / ±135 V DC GPU).

Dimensions & weights
Order designationCores × SizeMain cross-sectionOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard GP 270 V DC configurations
GP 270 V DC 2×35 + 1G25 + (6×1.5)C mm²2×35 + 1G25 + (6×1.5)C35.0 mm²31.51,0201,680189
GP 270 V DC 2×50 + 1G25 + (6×1.5)C mm²2×50 + 1G25 + (6×1.5)C50.0 mm²35.21,3202,120211
GP 270 V DC 2×70 + 1G35 + (6×1.5)C mm²2×70 + 1G35 + (6×1.5)C70.0 mm²39.41,8102,790236
GP 270 V DC 2×70 + 1G35 + (8×2.5)C mm²2×70 + 1G35 + (8×2.5)C70.0 mm²40.81,9202,950245
GP 270 V DC 2×95 + 1G50 + (8×2.5)C mm²2×95 + 1G50 + (8×2.5)C95.0 mm²45.22,5803,840271
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal factory values subject to ±5 % manufacturing tolerance per MIL-STD-704F / SAE AS5756 / ISO 6858 (270 V DC / ±135 V DC GPU).

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
3.5 kV AC / 5.0 kV DC dielectric test5 min HV withstand on 270 V DC power cores; 1.5 kV AC on control100 % of reels
Class 6 tinned copper DC resistance @ 20 °CIEC 60228 Class 6 tinned copper limits100 % of reels
Sample tests
Control screen transfer impedance & crosstalkZero HVDC converter switching noise into remote-sense pairPer production batch
JP-8, PAO coolant & -40 °C cold flex testSAE AS5756 & MIL-DTL-3432 environmental qualificationType approval

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

MIL-STD-704F (270 V DC)SAE AS5756 / ISO 6858IEC 60228 Class 6

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX GP 270 V DC (+/-135V DC) AIRCRAFT
Delivery form
Non-returnable timber drums or heavy export
Standard drum lengths
250 m · 500 m · 1000 m · custom cut lengths
MOQ
100 m (stock variants) · 500 m (custom)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFGP 270 V DC 270 V DC Aircraft Ground-Power Cable – technical datasheet5 sizes · construction, technical data, approvalsXLSXGP 270 V DC spec data (Excel)All 5 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why do modern military aircraft like the F-35 use 270 V DC ground power instead of 115/200 V 400 Hz AC or 28 V DC?
Defined in MIL-STD-704F, 270 V DC (typically configured as ±135 V DC referenced to aircraft structure) delivers 70 kW to 150 kW for high-power active electronically scanned array (AESA) radar, electro-hydrostatic flight actuators, and thermal management with much lighter cabling and zero 400 Hz reactive inductance drop.
Why is a dedicated equipment grounding conductor and screened interlock bundle critical on 270 V DC GPU cables?
Unlike 28 V DC, a 270 V DC arc cannot self-extinguish if a plug is pulled under load. The screened control cores run a high-speed pilot interlock loop and differential current-fault monitor that trips the solid-state GPU output within microseconds if the plug unlatches or ground continuity is lost.
Why are the control and voltage-sense cores copper-braid screened inside the GP 270 V DC cable?
Solid-state 270 V DC ground power units use high-frequency PWM IGBT or SiC rectifiers. Screening the remote voltage-sense and interlock cores with a ≥ 85 % tinned copper braid prevents switching ripple on the 2×50–95 mm² main cores from disturbing the GPU closed-loop voltage regulator.
Does the outer PUR jacket resist polyalphaolefin (PAO) avionics coolant and JP-8 fuel?
Yes. Fighter maintenance bays expose apron cables to synthetic PAO radar/avionics dielectric coolant, JP-5/JP-8 turbine fuel, and MIL-PRF-83282 hydraulic fluid. Our cross-linked ether-PUR jacket resists chemical swelling, cuts, and -40 °C cold cracking. Each production drum undergoes 100 % conductor DC resistance verification, insulation

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GP 270 V DC 270 V DC Aircraft Ground-Power Cable

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