CEFR-R-450/750V
Flexible Shipboard Rubber Cable for Portable and Reel-Mounted Equipment
Fine-strand tinned copper and an oil-resistant rubber jacket for gear that moves around the deck.
Not everything on a ship is fixed. Welding sets, submersible pumps, deck cranes, portable tools, shore-connection leads and reel-mounted floodlights need a cable that flexes, coils and gets dragged across steel. This is a rubber-sheathed flexible cable: fine-strand tinned copper to IEC 60228 Class 5 or Class 6, EPR insulation, and a polychloroprene or chlorinated-polyethylene jacket selected for oil, ozone and abrasion resistance rather than for flame spread alone.
Flex life is the specification that matters. Voltcore lays the cores with a short pitch and uses a fine wire diameter so bending strain is spread across many strands, and applies a separator so the insulation does not migrate into the strand during flexing. Reel-mounted versions come with a stated minimum sheave diameter and maximum pull tension, because a cable that survives long flex testing in the factory will still fail early if it is wound onto a drum that is too small.
Specification
| Item | Value |
|---|---|
| Rated voltage U0/U | 450/750 V and 0.6/1 kV |
| Conductor | Fine-strand tinned copper, Class 5 or Class 6, IEC 60228 |
| Separator | Textile or polyester tape over the conductor |
| Insulation | EPR, 85 °C conductor rating, IEC 60092-360 |
| Sheath | PCP or CPE rubber, oil, ozone and abrasion resistant |
| Flame retardance | IEC 60332-1 single cable; IEC 60332-3-24 category C bunched |
| Halogen-free option | SHF2 sheath where low smoke is specified |
| Core count | 1 to 5 cores, plus 3+1 and multi-core control variants |
| Cross-section range | 1 – 120 mm² |
| Operating temperature range | -40 °C to +85 °C |
| Min bending radius | 5 × OD fixed, 8 × OD over sheaves and reels |
Layer-by-layer construction
Listed from the conductor outward. Read this alongside the specification table — the two together tell you whether the cable will survive its installation method.
- 1. ConductorFine-strand tinned copper, Class 5 or Class 6, IEC 60228
- 2. SeparatorTextile or polyester tape over the conductor to stop insulation migration into the strand
- 3. InsulationEPR, 85 °C conductor rating, colour-coded, IEC 60092-360
- 4. Lay-upCores laid with a short pitch and rubber filler, optionally with a textile reinforcement braid
- 5. Outer sheathPCP or CPE rubber, oil, ozone and abrasion resistant; SHF2 halogen-free option
Reference dimensions and weights
| Nominal cross-section (mm²) | Conductor structure (n × mm) | Insulation thickness (mm) | Sheath thickness (mm) | Approx. overall diameter (mm) | Approx. weight (kg/km) |
|---|---|---|---|---|---|
| 4 × 1.5 | 84 / 0.15 | 0.8 | 1.6 | 12.6 | 230 |
| 4 × 2.5 | 140 / 0.15 | 0.9 | 1.7 | 14.4 | 330 |
| 4 × 4 | 224 / 0.15 | 1.0 | 1.8 | 16.6 | 470 |
| 4 × 6 | 192 / 0.20 | 1.0 | 1.9 | 18.0 | 620 |
| 4 × 10 | 320 / 0.20 | 1.2 | 2.1 | 22.4 | 1030 |
| 4 × 16 | 512 / 0.20 | 1.2 | 2.2 | 25.4 | 1500 |
| 4 × 25 | 800 / 0.20 | 1.4 | 2.4 | 30.2 | 2280 |
| 4 × 35 | 1120 / 0.20 | 1.4 | 2.6 | 33.6 | 3050 |
| 4 × 50 | 1600 / 0.20 | 1.6 | 2.8 | 38.8 | 4250 |
| 4 × 70 | 2240 / 0.20 | 1.6 | 3.0 | 43.4 | 5800 |
Reference figures for preliminary sizing and drum planning. Overall diameter and weight vary with strand construction and sheath thickness tolerance; certified drawings are issued with each quotation.
Engineering characteristics
- Class 5 or Class 6 fine-strand tinned copper spreads bending strain across many wires, which is what gives a long flex life at the gland.
- EPR insulation at 85 °C stays flexible after repeated coiling, where PVC would stiffen and crack at low temperature.
- PCP or CPE jacket resists oil, grease, ozone and seawater and survives being dragged across a steel deck.
- Operating range -40 °C to +85 °C covers refrigerated cargo spaces and tropical deck exposure without a special grade.
- Bending radius 5 × OD fixed and 8 × OD over sheaves, with recommended sheave diameter and pull tension stated per size.
- Textile separator over the conductor stops insulation compound migrating into the strand during flexing.
- Halogen-free SHF2 sheath option where the cable is used inside accommodation spaces or a sealed module.
Typical applications
- Portable tools and welding sets on deck and in the workshop
- Submersible bilge and ballast pumps
- Deck cranes, winches and hose-handling reels
- Shore connection and ship-to-ship temporary power leads
- Portable floodlighting and cargo-handling equipment
- Movable engine room maintenance equipment
Ordering options
- Class 6 extra-flexible conductor for hand-held equipment leads
- PCP or CPE jacket grade selected for the dominant exposure: oil, ozone or abrasion
- Halogen-free SHF2 sheath version for accommodation spaces
- Orange or black jacket, with or without a textile reinforcement braid
- Cut-to-length sets with moulded plugs, couplers and strain reliefs
Standards manufactured to
- IEC 60092-350
- IEC 60092-353
- IEC 60092-359
- IEC 60092-360
- IEC 60245-4
- IEC 60332-1
- IEC 60332-3-24
- IEC 60228
Manufactured to other standards on request. Send the standard number with your RFQ and we will quote against it rather than against a near-equivalent.
Price and availability for Flexible Shipboard Rubber Cable
Include cross-section, core count, voltage grade, route length and installation method — those five determine price more than anything else on the page.
- Engineer-reviewed before pricing
- Reference drawings issued with the quotation
- Free sample up to free sample up to 5 m
Flexible Shipboard Rubber Cable — frequently asked questions
How does this differ from fixed shipboard power cable?
The conductor is finer stranded — Class 5 or Class 6 against Class 2 — there is a separator tape over the strand, and the jacket is rubber rather than polyolefin. Bending radius drops to 5 × OD from 8 × OD. Use it wherever the cable moves or is coiled; use fixed power cable for a run cleated once and left alone.
Can it be used on a reel or cable handler?
Yes, provided the sheave or drum diameter is at least 8 × the cable overall diameter. Give Voltcore the reel diameter and the number of layers and the size and maximum pull tension are confirmed against it. Pull on a strain-relief grip, never on the conductors, and avoid a tight bend near the entry gland.
Which jacket should I choose for a machinery space?
PCP for the best combination of oil, weather and mechanical performance, and CPE where heat and oil resistance are needed at lower cost. If the route passes through accommodation or a low-smoke area, take the SHF2 halogen-free version and accept that its oil resistance, while tested, is lower than PCP.
Is it suitable for permanent submersion?
For intermittent duty such as a portable bilge pump, yes, with a sealed gland. For permanent submersion specify a water-blocking construction with filled conductors and a sealed termination, because water will otherwise travel along the strand interstices and reach the equipment end.