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Product

Control & signal cableAJ- Induction ProtectedOF Jelly Water-BlockedCu Screen (D) + Steel Armour (B)

AJ-2YOF(L)2YDB2Y Water-Blocked Induction-Protected Railway CableDB 416.0115 'AJ' induction-protected + 'OF' water-blocked armoured railway quad cable

AJ-2YOF(L)2YDB2Y water-blocked and induction-protected railway telecom cable (DB 416.0115 / DIN VDE 0816) combining 'AJ-' AC traction shielding (Cu wire screen 'D' + steel tape armour 'B', r_k ≤ 0.10–0.25) with 'OF' petrolatum jelly water blocking.

Water-resistant
Low-EMC design
EMC screen
Outdoor & humid
Order designation
AJ-2YOF(L)2YDB2Y 4×4×0.9
Outer Ø ≈
20.00 mm
Wall thickness
2.20 mm
Total weight ≈
580.0 kg/km
Min. bend R (fixed)
300 mm
All sizes (10)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Reduction factor
r_k ≤ 0.10–0.25
At 16.7 / 50 Hz AC traction
Water blocking
OF + (L)2Y seal
Jelly core + Al/PE radial barrier
Heavy screen
(L)2Y + Cu (D)
Al/PE sheath + copper wire screen
Magnetic armour
2 × steel tape
High-permeability steel tapes (B)
Quad conductor
0.9–1.4 mm Cu
Solid bare Cu star-quads (x4)
Mutual cap.
≤ 50–52 nF/km
At 800 Hz in petrolatum filling

Typical values for this cable type, based on DB 416.0115 / DIN VDE 0816 Water-Blocked & Induction-Protected Railway Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is AJ-2YOF(L)2YDB2Y right for your machine?

Select AJ-2YOF(L)2YDB2Y for direct-buried or flooded trackside routes along 15 kV 16.7 Hz and 25 kV 50 Hz electrified railways requiring both low reduction factor r_k and longitudinal water blocking.

VFD inverter to AC motor screened feeder

Suitable

Copper wire screen ('D') and magnetic steel tape armour ('B') suppress 16.7/50 Hz voltages from AC catenary lines.

Immersion & wet locations

Suitable

Petrolatum jelly ('OF') and '(L)2Y' Al/PE barrier block radial moisture and longitudinal water travel in wet trenches.

Fixed installation

Suitable

Double steel tape armour ('B') and UV-stabilised HDPE outer jacket protect against ballast stone crushing, trench settlement, and rodents.

Energy chain / drag chain

Not suitable

Solid copper star-quads and steel tape armour are built exclusively for fixed burial and trackside trough installation.

Use JZ-50440 CP for drag-chain control
Typical machinesElectrified Mainline Direct-Burial RoutesFlooded Trackside Troughs & Under-Track Crossings15 kV / 25 kV AC Railway Interlocking & SCADAWet Tunnel Portal & Bridge ApproachesRailway Substation Control & Voice Trunks

Construction

Layer by layer

DB 416.0115 AJ-OF construction: solid copper star-quads, 2Y PE insulation, OF petrolatum jelly filling, (L)2Y Al/PE laminated inner sheath, copper wire screen (D), high-permeability steel tape armour (B), and 2Y HDPE jacket.

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Solid bare copper star-quadsAnnealed solid bare copper wire (0.9 mm, 1.2 mm, or 1.4 mm) twisted in balanced star-quadsLow DC resistance and balanced quad geometry for railway signalling and telecoms
22Y polyethylene core insulationSolid or cellular-skin polyethylene (2Y) dimensioned for jelly-filled quadsMaintains ≤ 50–52 nF/km mutual capacitance at 800 Hz
3OF petrolatum core fillingHydrophobic, drop-point-stabilised petrolatum jelly filling ('OF')Prevents longitudinal water propagation along the star-quad interstices
4(L)2Y Al/PE sheath + Cu screen (D)Copolymer-coated aluminum moisture barrier ('(L)2Y') overlaid with helically applied bare copper wires ('D')Combines 100 % radial moisture sealing with high longitudinal screen conductivity
5High-permeability steel tape armour (B)Two helically applied magnetic steel tapes over protective beddingProvides magnetic flux coupling for low r_k plus rodent and crush protection
62Y black HDPE outer sheathUV-stabilised carbon-black high-density polyethylene jacketCorrosion-proof outer barrier for wet embankments and direct burial

AJ-2YOF(L)2YDB2Y n×4×0.9 mm

0.9 mm water-blocked and induction-protected railway star-quad telecom and axle-counter cable

AJ-2YOF(L)2YDB2Y n×4×1.4 mm

1.4 mm water-blocked and induction-protected railway quad cable for long interlocking runs

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DB 416.0115 / DIN VDE 0816 Water-Blocked & Induction-Protected Railway Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Reduction factor r_k
≤ 0.10 to ≤ 0.25 at 16.7 / 50 Hz (100–300 V/km)
Loop resistance (+20 °C)
≤ 56.6 Ω/km (0.9) · ≤ 31.8 Ω/km (1.2) · ≤ 23.4 Ω/km (1.4)
Mutual capacitance (800 Hz)
≤ 50–52 nF/km
AC dielectric test voltage
2,500 V AC (core/core & core/screen)

Thermal

Operating temperature (fixed)
-40 °C to +70 °C
Installation temperature
-20 °C to +50 °C

Mechanical

Water-blocking system
OF petrolatum jelly + (L)2Y Al/PE barrier
Screen & armour system
Copper wire screen (D) + 2× steel tapes (B)
Min. bending radius
15 × overall cable diameter

Resistance

Longitudinal water tightness
IEC 60794-1-22 Method F5 pass
AC catenary induction
15 kV 16.7 Hz & 25 kV 50 Hz protected
Rodent & crush resistance
Double steel tape armour ('B')

Reference standards

Primary specifications
DB TL 416.0115 & DIN VDE 0816-1
RoHS & REACH
RoHS 3 & REACH compliant

Identification

Outer sheath colour
Black (RAL 9005)
Surface legend
TEBAOFLEX AJ-2YOF(L)2YDB2Y [n×4×d] VDE 0816 DB
Customs tariff (HS)
8544.49

Sizes

10 standard configurations (AJ-2YOF(L)2YDB2Y)

Engineering dimensions, conductor stranding, mass and electrical ratings for AJ-2YOF(L)2YDB2Y per DB 416.0115 / DIN VDE 0816 Water-Blocked & Induction-Protected Railway Specification.

Dimensions & weights
Order designationCross-section / sizeConductor buildWall ≈
mm		Outer Ø ≈
mm		Metal
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard AJ-2YOF(L)2YDB2Y configurations
AJ-2YOF(L)2YDB2Y 2×4×0.92×4×0.9≤ 0.201.9417.60195.8445.0265
AJ-2YOF(L)2YDB2Y 4×4×0.94×4×0.9≤ 0.202.2020.00255.2580.0300
AJ-2YOF(L)2YDB2Y 6×4×0.96×4×0.9≤ 0.152.4822.50319.0725.0340
AJ-2YOF(L)2YDB2Y 10×4×0.910×4×0.9≤ 0.152.8626.00426.8970.0390
AJ-2YOF(L)2YDB2Y 14×4×0.914×4×0.9≤ 0.123.1728.80532.41,210.0435
AJ-2YOF(L)2YDB2Y 20×4×0.920×4×0.9≤ 0.103.5832.50677.61,540.0490
AJ-2YOF(L)2YDB2Y 2×4×1.42×4×1.4≤ 0.202.3121.00297.0675.0315
AJ-2YOF(L)2YDB2Y 4×4×1.44×4×1.4≤ 0.152.6424.00396.0900.0360
AJ-2YOF(L)2YDB2Y 6×4×1.46×4×1.4≤ 0.153.0427.60521.41,185.0415
AJ-2YOF(L)2YDB2Y 10×4×1.410×4×1.4≤ 0.103.5432.20739.21,680.0485
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal engineering values for AJ-2YOF(L)2YDB2Y subject to standard manufacturing tolerances per DB 416.0115 / DIN VDE 0816 Water-Blocked & Induction-Protected Railway Specification.

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
Dielectric spark / high-voltage withstand test100 % in-line spark and AC/DC dielectric withstand per DB 416.0115 / DIN VDE 0816 Water-Blocked & Induction-Protected Railway SpecificationEvery manufactured length
Conductor DC resistance & continuity checkWithin maximum 20 °C resistance limit specified for AJ-2YOF(L)2YDB2YEvery spool or drum length
Sample tests
Insulation resistance & dimensional verificationWall thickness, concentricity and insulation resistance per DB 416.0115 / DIN VDE 0816 Water-Blocked & Induction-Protected Railway SpecificationPer production batch
Environmental, mechanical & EMC qualificationQualified to DB 416.0115 / DIN VDE 0816 Water-Blocked & Induction-Protected Railway Specification thermal, mechanical and environmental performance criteriaType qualification

Inspection certificate

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

Product approvals

DB 416.0115 / DIN VDE 0816 Water-Blocked & Induction-Protected Railway SpecificationCE (2014/35/EU) & RoHS 3 (2015/863/EU) CompliantREACH SVHC Compliance Verified

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX AJ-2YOF(L)2YDB2Y 4x4x0.9 VDE 0816 DB WATER-BLOCKED
Delivery form
Export wooden drums, tactical reels or coils
Standard lengths
100 m · 500 m · 1000 m (or custom cut lengths)
MOQ
100 m (stock sizes) · 300–500 m (custom build)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFAJ-2YOF(L)2YDB2Y Water-Blocked Induction-Protected Railway Cable – technical datasheet10 sizes · construction, technical data, approvalsXLSXAJ-2YOF(L)2YDB2Y spec data (Excel)All 10 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 AJ-2YOF(L)2YDB2Y combine both 'AJ-...DB' and 'OF' features?
Many electrified mainline railway routes run through high-water-table cuttings, under-track directional bores, or drainage trenches where cables are simultaneously exposed to 15 kV / 25 kV AC catenary magnetic induction and standing water. 'AJ-...DB' provides the copper-wire + steel-tape reduction screen while 'OF' petrolatum filling makes the core longitudinally watertight.
What is each layer's role in the '(L)2YDB2Y' sheath system?
'(L)2Y' is the aluminum-laminated PE inner sheath that seals out radial moisture, 'D' is the helical copper wire screen that provides low longitudinal resistance, 'B' is the double high-permeability steel tape armour that provides magnetic inductance and rodent protection, and '2Y' is the black HDPE outer jacket.
How is the petrolatum jelly cleaned from the cores before termination?
Technicians wipe the exposed star-quads with an approved hydrocarbon-free cable degreaser wipe before terminating onto LSA-Plus / IDC blocks or solderless railway terminal strips.
Can AJ-2YOF(L)2YDB2Y be ordered with a tailored reduction factor r_k?
Yes. By adjusting the cross-section of the copper wire screen ('D') and the permeability/thickness of the steel tapes ('B'), the cable can be engineered for standard (r_k ≤ 0.25–0.30) or heavy (r_k ≤ 0.10–0.15) traction induction zones.

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AJ-2YOF(L)2YDB2Y Water-Blocked Induction-Protected Railway Cable

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