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Product

power connection cable series115/200 V AC 400 Hz GPUSymmetrical 7-Core Low ReactanceSAE AS5756 / ISO 6858

400 Hz Aircraft Ground Power CableSAE AS5756 115/200 V 400 Hz low-reactance 7-core + control aircraft GPU cable

400 Hz Aircraft Ground Power Cable engineered per SAE AS5756, ISO 6858 and MIL-DTL-3432 for 115/200 V AC 400 Hz solid-state frequency converters, mobile diesel GPUs and passenger boarding bridge cable reels—featuring a symmetrical.

Symmetrical 6+1 Low Voltage Drop
Jet-A, Skydrol & De-Icer Proof
Bridge Reel & Apron Drag
SAE AS5756 / ISO 6858
Order designation
400Hz-140kVA (Metric 6×25+35)
Outer Ø ≈
37.8 mm
Weight ≈
2.65 kg/m
400 Hz reactance
0.079 Ω/km
400 Hz capacity
390 A (140 kVA)
All sizes (4)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Standards
SAE AS5756 / ISO
600 V rating · 115/200 V 400 Hz
Power geometry
7-Core (6 Phase
2 parallel cores per phase around N
400 Hz reactance
≤ 0.095 Ω/km
60 % lower ΔV than 4-core cable
Control cores
4 to 12 Cores
28 V DC E & F aircraft interlock
Cold flexibility
-55 °C to +90 °C
Arctic apron & desert tarmac
Outer jacket
Hi-Vis Yellow /
Skydrol, Jet-A & wheel crush

Typical values for this cable type, based on SAE AS5756 / MIL-DTL-3432 / ISO 6858 / DFS 400 — confirmed in the datasheet and quotation for your order.

Application fit

Is 400 Hz Aircraft Ground Power Cable right for your machine?

At 400 Hz (8× grid frequency), a conventional 4-core cable suffers severe inductive reactance and skin/proximity effect losses that drop voltage below the aircraft's 115 V ± 3 V window within 15 m. The 6-around-1 phase-split geometry cancels magnetic flux to keep 400 Hz voltage drop negligible across 30–45 m apron runs.

Motorised monospiral reel

Suitable

Reinforced against torsion for motorized under-bridge cable reels, crocodile pantograph booms and mobile GPU tow carts.

Trailing & towing

Suitable

High-visibility Yellow or Orange PUR/CPE jacket survives concrete tarmac dragging, nose-wheel/tug roll-over and -55 °C arctic operations.

Immersion & wet locations

Suitable

Resists aviation kerosene (Jet-A1), phosphate-ester hydraulic fluid (Skydrol LD-4), potassium-acetate runway de-icers and glycol.

Fixed installation

With conditions

Flexible stinger/reeling cable; for fixed 400 Hz underground sub-feeder conduits from a central vault, use concentric or 7-core fixed.

Typical machinesCommercial Airport Passenger Boarding Bridges (PBB)Mobile Diesel & Battery Apron Ground Power Units (GPU)Military Fighter & Transport Hangar 400 Hz PitsAircraft MRO Hangars & Avionics Test BaysNaval Flight-Deck 400 Hz Helicopter Servicing

Construction

Layer by layer

400 Hz Aircraft Ground Power Cable showing central multi-rope Class 6 tinned copper neutral conductor (surrounded by 4–12 × 28 V DC control cores in concentric/interstitial lay), 6 symmetrically arranged phase conductors (A1, B1, C1, A2, B2, C2), EPR/TPE insulation, reinforcing braid, and high-visibility Yellow/Orange elastomer/PUR outer sheath.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Central Neutral + 6 Symmetrical Phase Conductors (Class 6 Cu)7 × extra-flexible rope-lay Class 6 (0.15–0.20 mm / 34–32 AWG) tinned or bare copper power cores: 1 central Neutral + 6 outer Phase cores (2 per phase: A1/A2, B1/B2, C1/C2)Diametrically opposed phase pairs cancel 400 Hz inductive reactance and proximity effect
24 to 12 × 28 V DC Interlock & Voltage-Sense Control Cores4, 6, 7 or 12 × 1.5–2.5 mm² (16–14 AWG) Class 6 tinned copper control cores laid around the central neutral or in outer intersticesConnects ISO 461 aircraft plug pins E & F (28 V DC interlock) and remote voltage-drop compensation
3Low-loss 90 °C EPR / TPE-E dielectric insulationHigh-flexibility ethylene propylene elastomer or thermoplastic polyester elastomer colour/number-coded A1, B1, C1, A2, B2, C2, NMaintains flexibility down to -55 °C without stiffening on cold aprons
4Anti-torsion synthetic yarn reinforcing braidOpen-weave high-tenacity polyamide/polyester anti-torsion braid embedded between inner and outer sheath layersAbsorbs motorized boarding-bridge reel tension and operator pulling loads
5Skydrol- & Jet-A-resistant Hi-Vis Yellow/Orange outer sheathHeavy-duty cross-linked Chlorinated Polyethylene (CPE/PCP) or Polyether Polyurethane (PUR) in Safety Yellow (RAL 1021) or OrangeHigh visibility on dark aprons; resists aircraft tug roll-over and hydraulic fluids

400Hz-90kVA (7 × 16 mm² / 6×6 AWG + 1×4 AWG + Control)

90 kVA (260 A @ 400 Hz) lightweight stinger cable for regional jets, narrow-body aircraft (A320 / B737) and hangar pits

400Hz-140kVA (6 × 25 + 1 × 35 mm² + 6–12 Control)

140 kVA (390 A @ 400 Hz) universal passenger boarding bridge reeling cable for narrow- and wide-body gates

400Hz-180kVA (6 × 35 + 1 × 50 mm² / 6×2 AWG + 1×1/0 AWG + Control)

180 kVA (500 A @ 400 Hz) heavy-duty GPU cable for wide-body aircraft (B777 / B787 / A350 / A380 dual-plug)

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on SAE AS5756 / MIL-DTL-3432 / ISO 6858 / DFS 400. Values for your order are confirmed in the datasheet and quotation.

Electrical

Operating system voltage
115 / 200 V AC three-phase 400 Hz (cable insulation rated 600 V)
400 Hz inductive reactance
0.068 to 0.092 Ω/km at 400 Hz (vs ~0.38 Ω/km for 4-core cable)
400 Hz voltage drop
0.042–0.058 V / (A·km) at cos φ = 0.8 (400 Hz)
Dielectric test voltage
3,000 V AC on power cores · 1,500 V AC on control cores

Thermal

Continuous conductor temp.
+90 °C
Dynamic apron temp. range
-55 °C to +80 °C (flexible operation on arctic/desert tarmacs)
Short-circuit temperature
+250 °C

Mechanical

Nominal outer diameter
32.5 mm (90 kVA) · 37.8 mm (140 kVA) · 42.5 mm (180 kVA)
Min. bend radius
6 × OD (dynamic reeling / apron handling) · 4 × OD (static)
Wheel crush resistance
Withstands aircraft service truck and nose-gear tire roll-over

Resistance

Aviation fluid immunity
Resistant to Jet-A1 kerosene, Skydrol LD-4/500B hydraulic fluid & MIL-PRF-5606
Runway de-icer & weather
Resistant to potassium/sodium formate, propylene glycol, UV & ozone
Abrasion & flame
Concrete tarmac drag-resistant PUR/CPE · Flame retardant per IEC 60332-1-2

Reference standards

Aerospace GPU cable stds
SAE AS5756 · MIL-DTL-3432 · German DFS 400
Ground power interface
ISO 6858 & ISO 461 (6-pin + E/F interlock 400 Hz aircraft plug)
RoHS & REACH
2011/65/EU & EC 1907/2006 compliant

Identification

Phase core identification
A1, B1, C1, A2, B2, C2 (paired at aircraft plug pins A, B, C) + Neutral N
Outer jacket colour
High-Visibility Safety Yellow (RAL 1021) or Aviation Orange (RAL 2009)
Customs tariff (HS)
8544.4993

Sizes

4 standard 400 Hz Aircraft Ground Power Cable (90 kVA to 180 kVA) configurations

Phase/neutral/control layout, outer diameter, weight, 400 Hz reactance and continuous current.

400 Hz ratings, reactance & dimensions
GPU cable rating6 Phase + 1 Neutral + ControlOuter Ø ≈
mm		Weight ≈
kg/m		400 Hz Xʟ
Ω/km		400 Hz rating
A (kVA)		Enquiry
115/200 V 400 Hz Symmetrical 7-Power-Core + Control Cables
400Hz-90kVA (Metric 6×16+25)6×16 mm² Ph + 1×25 mm² N + 7×1.5C32.51.850.088260 A (90 kVA)
400Hz-140kVA (Metric 6×25+35)6×25 mm² Ph + 1×35 mm² N + 12×1.5C37.82.650.079390 A (140 kVA)
400Hz-180kVA (Metric 6×35+50)6×35 mm² Ph + 1×50 mm² N + 12×1.5C42.43.550.072500 A (180 kVA)
400Hz-180kVA (SAE 6×2AWG+1/0)6×2 AWG Ph + 1×1/0 AWG N + 6×16AWG41.83.420.074500 A (180 kVA)
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • At the ISO 461 aircraft nose plug, phase cores A1+A2 crimp into Pin A, B1+B2 into Pin B, and C1+C2 into Pin C.

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
100 % 3.0 kV AC dielectric test, DC resistance & 400 Hz impedance verifyZero breakdown and balanced 400 Hz phase reactance across A1/A2, B1/B2, C1/C2Every manufactured length
Sample tests
Skydrol LD-4, Jet-A1 & de-icer fluid immersion + -55 °C cold bendMeets SAE AS5756 swell/tensile retention and zero cracking at -55 °CType qualification
Motorized boarding-bridge reel cyclic flexing & vehicle crush testZero core breakage or control-wire open circuit after cyclic reelingType qualification

Inspection certificate

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

Product approvals

SAE AS5756 & MIL-DTL-3432ISO 6858 / ISO 461 CompatibleDFS 400 German Airport Spec

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX 400 HZ AIRCRAFT GROUND POWER CABLE SAE AS5756 / ISO 6858
Delivery form
Fumigated wooden drums or steel export reels
Standard lengths
500 m · 1000 m (or custom cut lengths)
MOQ
100 m (standard) · 500 m (custom)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDF400 Hz Aircraft Ground Power Cable – technical datasheet4 sizes · construction, technical data, approvalsXLSX400 Hz Aircraft Ground Power Cable spec data (Excel)All 4 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 does a 400 Hz aircraft ground power cable use 7 power conductors (6 phase + 1 neutral) instead of 4?
At 400 Hz, inductive reactance (Xʟ = 2πfL) is 8 times higher than at 50 Hz, and skin/proximity effects push current to the outer surface of large conductors. By splitting each phase into two smaller conductors (2×25 mm² or 2×35 mm²) and arranging them in alternating sequence A1–B1–C1–A2–B2–C2 around the central neutral, the magnetic fields of adjacent phases cancel out—cutting 400 Hz reactance by more than 60 % and keeping voltage at the aircraft plug within ISO 6858 tolerances.
Why is the central Neutral conductor sized larger in cross-section than each individual phase core?
In the 6-around-1 lay, the central neutral core is thermally surrounded by all 6 phase cores and carries unbalanced phase currents plus 3rd-order (1,200 Hz) triplen harmonic currents generated by aircraft avionics rectifiers. Using a 35 or 50 mm² central neutral equalizes the geometric pitch diameter of the 6 outer phase cores while preventing neutral overheating.
What is the purpose of the 28 V DC E and F interlock control cores?
When the ISO 461 6-pole plug is seated into the aircraft receptacle, shorter pins E and F complete a 28 V DC safety interlock loop back to the 400 Hz GPU converter. If the plug is pulled or partially dislodged, pins E and F break contact first, tripping the GPU contactor in milliseconds before the main 260–500 A pins can draw an arc.
Can we order this cable factory-terminated with moulded ISO 461 90 kVA / 180 kVA aircraft plugs?
Yes. We supply both bulk reel lengths for airport electrical contractors and ready-to-hang boarding-bridge stinger assemblies with vulcanized ISO 461 plugs.

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400 Hz Aircraft Ground Power Cable

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