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EN 50618 / IEC 62930 Solar PV & 1500 V DC Energy Storage Cables1500 V / 2000 V DC BESS RatedClass 5/6 Tinned Cu + E-Beam XLPOUL 1973 / VW-1 / IEC 60332-3 LSZH

Battery Energy Storage DC Cable1500 V / 2000 V DC extra-flexible Class 5/6 tinned Cu halogen-free XLPO BESS battery rack

Battery Energy Storage DC Cable is a 1,500 V DC (up to 1,800 / 2,000 V DC max) single-core power interconnect cable engineered for utility-scale containerized and commercial Battery Energy Storage Systems (BESS). Combining an IEC 60228 Class 5 or Class 6 fine-

UL VW-1 / FT4 / IEC 60332-3 LSZH
3 × to 4 × OD Tight Rack Bend
Electrolyte, Acid & Oil Resistant
UL / TÜV / EN 50618 / IEC 62930
Order designation
BESS 1×50 mm²
Nom. OD
12.80 mm
Copper mass
480.0 kg/km
Total mass ≈
560.0 kg/km
Min. bend R
51.2 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 rating
1500 V / 2000 V
1000 V / 1500 V AC rated
Conductor
Class 5 / 6 tinn
IEC 60228 extra-flexible strands
Insulation
E-beam cross-lin
Halogen-free LSZH thermoset (+125 °C)
Size range
16 to 400 mm²
4 AWG to 777 MCM equivalents
Operating temp
-40 to +120 / +1
+250 °C short-circuit withstand
Min. bend radius
3 × to 4 × OD
Tight battery module bus turns

Typical values for this cable type, based on UL 1973 / UL 9540A / EN 50618 / IEC 62930 — confirmed in the datasheet and quotation for your order.

Application fit

Is Battery Energy Storage DC Cable right for your machine?

Specified for LiFePO4 and NMC battery module-to-module jumpers, high-voltage battery cluster combiners, containerized BESS DC busbars, PCS bidirectional inverters and UPS battery cabinets.

Switchgear & control cabinet wiring

Suitable

3 × to 4 × OD bend radius routes between stacked battery packs and Amphenol/Radlok HV terminals without straining busbars.

Fixed installation

Suitable

Certified for cable trays, vertical rack risers and DC combiner ducts inside 20-ft / 40-ft BESS containers.

Motor stator, traction & converter leads

Suitable

Connects high-current DC breakers, pre-charge contactors and PCS inverter DC-link terminals.

Motorised monospiral reel

Not suitable

Engineered for fixed rack and cabinet installation inside energy storage systems.

H01N2-E flexible power cable
Typical machinesUtility-scale 1500 V DC BESS containersCommercial & industrial energy storageLiFePO4 battery pack & rack jumpersPCS inverter & DC combiner cabinetsData-centre HVDC & UPS battery rooms

Construction

Layer by layer

IEC 60228 Class 5 or Class 6 fine-stranded tinned annealed copper + separator tape (≥50 mm²) + electron-beam cross-linked halogen-free flame-retardant polyolefin (XLPO / Z2, +125 °C) single or dual-layer insulation (Orange, Black or Red).

123
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Class 5 / Class 6 tinned copper (IEC 60228)Extra-flexible rope-stranded tin-coated copper eliminating mechanical lever torque on battery module studs and plug-in connectorsIEC 60228
2Halogen-free separator tapeApplied on cross-sections ≥35 mm² for clean stripping on automated lug-crimping pressesEN 50618
3Cross-linked LSZH XLPO insulation/sheath125 °C electron-beam cross-linked halogen-free polyolefin (Orange RAL 2003, Black RAL 9005 or Red RAL 3000) meeting UL VW-1 / FT4 and IEC 60332-3EN 50618

Orange RAL 2003 High-Voltage BESS Interconnect (16–120 mm²)

High-visibility orange 1500 V DC extra-flexible cable for battery module-to-module jumpers and HV rack harnesses with plug-in radlok connectors.

Black & Red Polarity Feeder (95–400 mm²)

Heavy-section 1500/2000 V DC feeder cable connecting battery cluster combiner cabinets to PCS inverters.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on UL 1973 / UL 9540A / EN 50618 / IEC 62930. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage
1,500 V DC (up to 1,800 / 2,000 V DC max) · 1,000 / 1,500 V AC
Dielectric test voltage
6.5 kV AC rms or 15 kV DC for 5 minutes
Insulation resistance
≥1,000 MΩ·km at +20 °C

Thermal

Continuous operating temperature
-40 °C to +120 / +125 °C
Short-circuit temperature (5 s)
+250 °C thermoset cross-linked XLPO

Mechanical

Minimum bending radius
3 × D (≤50 mm²) · 4 × D (>50 mm²) for compact battery rack turns
Conductor flexibility
IEC 60228 Class 5 (standard) or Class 6 (extra-fine 0.15/0.20 mm strands)

Resistance

Flame propagation & fire safety
UL 1581 VW-1, CSA FT1/FT4, IEC 60332-1-2 & IEC 60332-3-24 bunched flame
Halogen, smoke & electrolyte resistance
IEC 60754-1/2 zero halogen, IEC 61034-2 low smoke; resists carbonate electrolyte & battery acid

Reference standards

Reference standards
UL 1973 / UL 9540A component compliance, TÜV 2 PfG 2693, BS EN 50618 & IEC 62930
North American dual rating
UL 3817 / UL 44 RHW-2 / UL 4703 PV / cULus 1500–2000 V options

Identification

Standard colours
Orange (RAL 2003), Black (RAL 9005), Red (RAL 3000), Blue
Surface legend
Printed with mm² & AWG size, 1500V/2000V DC, 125°C, VW-1, LSZH and metre marks

Sizes

12 standard configurations (Battery Energy Storage DC Cable)

Nominal dimensions, copper weight, total mass and electrical parameters for Battery Energy Storage DC Cable per UL 1973 / UL 9540A / EN 50618 / IEC 62930.

Dimensions & masses
DesignationMetric (AWG/MCM)Cond. Ø / Wall mmNom. OD
mm		Copper
kg/km		Total mass ≈
kg/km		Min. bend R
mm		Enquiry
Battery Energy Storage DC Cable size schedule
BESS 1×16 mm²16 mm² (6 AWG)5.1 Ø · 1.5 mm8.20153.6195.032.8
BESS 1×25 mm²25 mm² (4 AWG)6.3 Ø · 1.6 mm9.60240.0290.038.4
BESS 1×35 mm²35 mm² (2 AWG)7.6 Ø · 1.6 mm10.90336.0395.043.6
BESS 1×50 mm²50 mm² (1/0 AWG)9.1 Ø · 1.8 mm12.80480.0560.051.2
BESS 1×70 mm²70 mm² (2/0 AWG)10.8 Ø · 1.8 mm14.50672.0765.058.0
BESS 1×95 mm²95 mm² (3/0 AWG)12.5 Ø · 2.0 mm16.60912.01,025.066.4
BESS 1×120 mm²120 mm² (4/0 AWG)14.2 Ø · 2.0 mm18.301,152.01,280.073.2
BESS 1×150 mm²150 mm² (300 MCM)15.8 Ø · 2.2 mm20.301,440.01,590.081.2
BESS 1×185 mm²185 mm² (350 MCM)17.5 Ø · 2.2 mm22.001,776.01,950.088.0
BESS 1×240 mm²240 mm² (500 MCM)20.1 Ø · 2.4 mm25.002,304.02,510.0100.0
BESS 1×300 mm²300 mm² (600 MCM)22.5 Ø · 2.6 mm27.802,880.03,120.0111.2
BESS 1×400 mm²400 mm² (777 MCM)25.8 Ø · 2.8 mm31.503,840.04,130.0126.0
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Dimensions and tolerances conform to UL 1973 / UL 9540A / EN 50618 / IEC 62930.

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
6.5 kV AC / 15 kV DC water-bath dielectric & spark testZero breakdown; resistance per IEC 60228 Class 5/6100 % of drums
Sample tests
Hot-set cross-linking, VW-1 vertical flame & -40 °C cold bendPasses thermoset hot-set and vertical flame self-extinguishEvery batch
IEC 60332-3-24 bunched fire, smoke density & zero-halogenCertified to TÜV 2 PfG 2693 / EN 50618 / UL 3817Type qualification

Inspection certificate

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

Product approvals

TÜV 2 PfG 2693 / EN 50618 (1.5 kV DC)UL 3817 / UL 1973 ComponentUL VW-1 & CSA FT4 FlameIEC 60332-3-24 / EN 60754-1/2 LSZHRoHS 3 & REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX BESS DC CABLE 1x[size]mm2 1500V/2000V DC 125C XLPO LSZH VW-1 FT4 [lot/m]
Delivery form
Non-returnable wooden drums, export reels or shrink-wrapped coils
Standard drum lengths
100 m · 250 m · 500 m · 1000 m
MOQ
200 m (stock sizes) · 500 m (custom lengths)
Lead time
2–3 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFBattery Energy Storage DC Cable – technical datasheet12 sizes · construction, technical data, approvalsXLSXBattery Energy Storage DC Cable 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.

Why can't standard rigid Class 2 power cable or regular 600 V battery wire be used inside utility-scale BESS racks?
Modern utility-scale LiFePO4 battery strings operate at 1,300 to 1,500 V DC and stack modules with only 80–120 mm front clearance. Rigid Class 2 conductors exert destructive lever forces on lithium-cell busbar studs and single-pole radlok connectors, while 600 V PVC battery wire lacks 1,500 V DC dielectric margin and releases corrosive HCl gas in a thermal event.
How does Battery Energy Storage DC Cable differ from standard H1Z2Z2-K solar PV cable?
While H1Z2Z2-K is optimized for outdoor 4–10 mm² solar module strings, BESS DC cable extends up to 400 mm² with a softer single- or dual-wall high-flex XLPO compound, tighter 3× to 4× OD bending radius for cabinet jumpers, +125 °C rating and UL VW-1 / FT4 / IEC 60332-3 bunched flame compliance required inside UL 9540 / UL 1973 battery enclosures.
Why is Orange (RAL 2003) frequently specified along with Black and Red?
In both automotive HV and stationary UL 1973 / IEC 62933 energy storage racks, Orange (RAL 2003) warns technicians that the inter-module jumper carries hazardous live DC voltage (>60 V DC up to 1,500 V DC) even when the main PCS breaker is open.
Are Class 5 and Class 6 tinned copper conductors compatible with ultrasonic welding and radial-louver HV plugs?
Yes. Fine-stranded tinned copper crimps cleanly in hexagonal die barrels for single-pole high-current BESS connectors (such as Amphenol Radsok/SurLok and Staubli) and resists oxidation under high-ripple bidirectional inverter currents.

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