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10–60 kV DC <1 pC low-noise triaxial HV cable10 kV – 60 kV DC< 1 pC PD NoiseTriaxial Guard + Shield

HSC Low-Noise Triaxial Low-Noise Triaxial High-Voltage Cable10 kV to 60 kV DC < 1 pC low-noise triaxial HV cable for PD testing & radiation detectors

Precision low-noise triaxial high-voltage cable (HSC Low-Noise Triaxial) rated 10 kV to 60 kV DC with semiconductive triboelectric noise suppression (< 1 pC PD background), isolated inner guard screen, and outer EMC shield for IEC 60270 PD bridges and.

Low-EMC design
EMC screen
Flame-retardant
Approved
Order designation
HSC-PE-30KV-50R
Rated DC voltage
30 kV DC
Max PD noise
< 0.5 pC
Capacitance
94 pF/m
Overall OD
11.4 mm
All sizes (12)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
DC voltage range
10 to 60 kV DC
5 kV to 25 kV AC rms PD-free
PD noise floor
< 0.5 – 1.0 pC
Exceeds IEC 60270 laboratory grade
Triboelectric Q
≤ 0.1 pC flex
Graphite/semicon interface damping
Architecture
True Triaxial
HV Core + Guard Screen + EMC Shield
Impedance
50 Ω / 75 Ω typ.
Low-loss PE/XLPE or SiR OEM
Inter-screen U
2.0 kV DC
Isolated inner guard vs outer ground

Typical values for this cable type, based on IEC 60270 / IEEE 400.3 / MIL-C-17 Triaxial — confirmed in the datasheet and quotation for your order.

Application fit

Is HSC Low-Noise Triaxial right for your machine?

Eliminates both triboelectric flexing charge noise and ground-loop interference in picoampere and picocoulomb HV measurements.

Switchgear & control cabinet wiring

Suitable

Dual concentric screens (inner driven/signal guard + outer chassis ground) reject external EMI by > 95 dB.

Self-supporting pendant & push-button drop

Suitable

Graphited/semiconductive low-noise interface neutralises triboelectric static charges when test leads are moved.

VFD inverter to AC motor screened feeder

Suitable

Ideal for coupling capacitors, tan-delta bridges, and PWM inverter partial-discharge diagnostics.

Energy chain / drag chain

Not suitable

Precision HV measurement cable is intended for test bays and instrumentation racks, not continuous drag chains.

Use M12 Ethernet Assembly
Typical machinesIEC 60270 Partial Discharge (PD) Test SystemsTan-Delta (Dissipation Factor) Schering BridgesProportional Counters, Ion Chambers & Ge/Si DetectorsPicoammeter / Electrometer High-Voltage Bias LeadsScanning Electron Microscope (SEM) Detector Feeds

Construction

Layer by layer

8-layer triaxial architecture: (1) stranded tinned/silver Cu center conductor + (2) inner semiconductive stress layer + (3) void-free PE/XLPE or Silicone HV OEM + (4) outer low-noise semiconductive/graphite layer + (5) inner tinned Cu guard braid + (6) 2 kV inter-screen PE/TPE insulation + (7) outer tinned Cu EMC braid + (8) PVC/PUR/Silicone jacket.

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Low-noise stranded tinned / silver-plated copper coreCompacted stranded tinned or silver-plated copper center conductor (0.50 mm² to 2.5 mm², or 50 Ω / 75 Ω matched geometry)Transmits HV bias and fast nanosecond PD/detector pulses with minimal skin loss
2Inner & outer anti-triboelectric semiconductive layersCo-extruded inner semiconductive stress layer and outer conductive graphite/polymer damping layer sandwiching the HV OEMDissipates friction-induced triboelectric charges (< 0.1 pC) and suppresses corona (< 1 pC)
3Void-free HV PE/XLPE or Silicone primary OEMSuper-clean low-loss PE/XLPE (tan δ ≤ 0.0003) or flexible HV silicone rubber rated 10 kV to 60 kV DCProvides ≥ 10¹⁵ Ω·cm insulation resistance and ultra-low dielectric absorption
4Inner triaxial guard / signal return braid≥ 90 % coverage tinned copper braided inner screen in intimate contact with the outer semiconductive layerActs as driven guard in electrometer/tan-delta circuits or clean signal return in PD/detector circuits
5Inter-screen isolation OEMExtruded 2.0 kV DC rated PE, TPE or silicone barrier separating the inner guard braid from the outer EMC shieldAllows the inner screen to float at guard potential or connect strictly at the detector preamplifier
6Outer ≥ 90 % EMC chassis braid & protective sheathOuter tinned copper braid (≥ 90 % coverage) under a low-friction red, grey or black PVC/PUR/Silicone outer jacketShunts ambient RF and 50/60 Hz ground-loop currents to chassis earth without contaminating the signal return

HSC-PE (Low-Loss PE/XLPE OEM, 50/75 Ω Pulse)

Ultra-low capacitance (67–100 pF/m) and tan δ ≤ 0.0003 for fast partial-discharge pulse propagation, PMT and proportional-counter detectors

HSC-SIR (Extra-Flexible Silicone OEM, −50 to +150 °C)

Limp silicone HV OEM and silicone outer sheath for flexible benchtop hipot, tan-delta and electrometer test leads

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEC 60270 / IEEE 400.3 / MIL-C-17 Triaxial. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated DC working voltage
10, 15, 20, 30, 40, 50 & 60 kV DC
Rated AC PD-free voltage
5 kV to 25 kV AC rms (50/60 Hz)
Partial discharge background
< 0.5 pC (up to 20 kV AC) · < 1.0 pC (25 kV AC) per IEC 60270
Triboelectric noise (mechanically flexed)
≤ 0.1 pC / < 50 μV peak-to-peak
Inter-shield breakdown voltage
≥ 2.0 kV DC (inner guard screen to outer EMC screen)
Characteristic impedance
50 ± 3 Ω or 75 ± 4 Ω (HSC-PE pulse series)

Thermal

Operating temperature (HSC-PE)
−30 °C to +85 °C
Operating temperature (HSC-SIR)
−50 °C to +150 °C

Mechanical

Center conductor cross-sections
0.50 mm², 0.75 mm², 1.0 mm², 1.5 mm², 2.5 mm²
Min. bend radius
8 × OD (HSC-PE) · 6 × OD (HSC-SIR)

Resistance

Shielding attenuation (triaxial)
≥ 95 dB (100 kHz to 1 GHz)
Flame & oil resistance
IEC 60332-1-2 · EN 60811-404 (PUR/PVC jacket)

Reference standards

PD & HV test standards
IEC 60270 · IEEE 400.3 · IEC 60060-1
Connector compatibility
SHV-Triax, Redel-HV Redel Triax,Circular-HV HV & custom PD bridge plugs

Identification

Outer sheath colour
Black, Grey (RAL 7001) or Red
Surface legend
TEBAOFLEX HSC LOW-NOISE TRIAXIAL HV CABLE <1pC [kV DC]
Customs tariff (HS)
8544.20 / 8544.60

Sizes

12 standard HSC Low-Noise Triaxial high-voltage cable configurations (10–60 kV DC)

Includes 50/75 Ω low-loss PE/XLPE detector/PD cables (HSC-PE) and extra-flexible silicone triaxial test leads (HSC-SIR).

Voltage ratings, PD level, capacitance & OD
Order designationHV OEM & Z0Center Core
mm² (AWG)		Rated U_DC
kV DC		PD-Free U_AC
kV rms		Max PD
pC		Capacitance
pF/m		Overall OD
mm		Weight
kg/km		Enquiry
HSC-PE Series — Low-Loss PE/XLPE OEM Triaxial HV Cable (50 Ω / 75 Ω)
HSC-PE-10KV-50RPE Low-Noise (50 Ω)0.95 (18 AWG)105< 0.51017.482
HSC-PE-15KV-75RPE Low-Noise (75 Ω)0.50 (20 AWG)157< 0.5688.296
HSC-PE-20KV-50RXLPE Low-Noise (50 Ω)1.50 (16 AWG)2010< 0.51029.6134
HSC-PE-30KV-50RXLPE Low-Noise (50 Ω)1.50 (16 AWG)3014< 0.59411.4182
HSC-PE-40KV-75RXLPE Low-Noise (75 Ω)1.00 (18 AWG)4018< 1.07213.0228
HSC-PE-60KV-75RXLPE Low-Noise (75 Ω)1.50 (16 AWG)6025< 1.06916.5355
HSC-SIR Series — Flexible Silicone OEM Triaxial HV Test Cable
HSC-SIR-10KV-1.0Silicone Low-Noise1.00 (18 AWG)105< 0.51487.892
HSC-SIR-20KV-1.5Silicone Low-Noise1.50 (16 AWG)209< 0.51329.8142
HSC-SIR-30KV-1.5Silicone Low-Noise1.50 (16 AWG)3013< 1.011811.8198
HSC-SIR-40KV-2.5Silicone Low-Noise2.50 (14 AWG)4017< 1.011513.6258
HSC-SIR-50KV-2.5Silicone Low-Noise2.50 (14 AWG)5021< 1.010815.4324
HSC-SIR-60KV-2.5Silicone Low-Noise2.50 (14 AWG)6025< 1.010217.5410
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Every length of HSC Low-Noise Triaxial is tested in a Faraday cage per IEC 60270 to certify partial-discharge inception/extinction and < 0.1 pC mechanical flex noise.

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
Faraday-cage IEC 60270 partial-discharge testVerify background PD < 0.5 pC (≤ 20 kV) / < 1.0 pC (25 kV AC rms)100 % of manufactured reels
Core-to-guard DC hipot & guard-to-shield 2 kV DC test1.5 × U_DC core-to-guard for 5 min + 2.0 kV DC guard-to-outer-shield for 1 min100 % of manufactured reels
Sample tests
Triboelectric flexing charge noise testMeasure induced charge ≤ 0.1 pC under standardised mechanical flexingProduction lot

Inspection certificate

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

Product approvals

IEC 60270 < 1 pC Partial-Discharge CertifiedIEEE 400.3 Shielded Diagnostic Lead Compliant

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX HSC LOW-NOISE TRIAXIAL HV CABLE <1pC IEC 60270 [kV DC]
Delivery form
Spools (50 m / 100 m) or factory-terminated triaxial test leads
Certificate
Serialized Faraday-cage PD plot & triboelectric noise certificate
Lead time
3–4 weeks ex-works

Technical documents

Downloads

PDFHSC Low-Noise Triaxial Low-Noise Triaxial High-Voltage Cable – technical datasheet12 sizes · construction, technical data, approvalsXLSXHSC Low-Noise Triaxial spec data (Excel)All 12 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.

What causes triboelectric cable noise, and how does HSC Low-Noise Triaxial eliminate it?
When an ordinary coaxial cable bends or vibrates, the outer metal braid rubs against the polymer OEM, separating frictional (triboelectric) static charges of tens to hundreds of picocoulombs that look identical to partial-discharge pulses or radiation detector events. HSC Low-Noise Triaxial bonds a semiconductive carbon/graphite damping layer directly to the OEM under the inner guard braid, short-circuiting any frictional charge locally before it can induce a voltage pulse.
Why does a high-voltage PD bridge or electrometer require a triaxial cable instead of a coaxial cable?
In a coaxial cable, the single outer braid serves as both the signal return and the external EMI/safety ground, allowing 50/60 Hz ground-loop currents and RF interference on the test-bay floor to develop voltage drops across the braid resistance. In a triaxial cable, the outer braid shunts all ground-loop and RF currents to chassis earth, while the isolated inner braid serves as a pure, noise-free signal return or driven guard.
How is the inner guard braid used in a tan-delta (Schering bridge) or picoammeter circuit?
By driving the inner guard braid to the exact same potential as the measurement input (or connecting it to the bridge guard terminal), leakage currents across the cable's outer surface and capacitive currents to ground are completely bypassed around the measuring impedance.
Should I choose HSC-PE (polyethylene/XLPE) or HSC-SIR (silicone) for my application?
Choose HSC-PE when you need 50 Ω or 75 Ω matched impedance, fast pulse rise times (partial discharge location, proportional counters, PMTs), and minimal OEM loss (tan δ ≤ 0.0003). Choose HSC-SIR when you need a limp, rubber-flexible benchtop test lead or wide −50 °C to +150 °C temperature capability.

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