(N)TSCGEWOEU-SR PLUS FO to DIN VDE 0250-813 – EPR Rubber Insulated Medium Voltage Reeling Cable with Fiber Optic for Crane, Harbour and Mining Applications

Introduction: Why Modern Reeling Systems Demand More Than Conventional Power Cables

In today’s heavy industries—particularly open-pit mining, harbour container terminals, bulk material stockyards and shipyards—medium voltage reeling cables are exposed to mechanical loads that were uncommon just a decade ago.

Higher travelling speeds.
Longer reeling distances.
Increased automation.
Greater electrical power requirements.

At the same time, operators are demanding integrated data transmission, improved operational safety and longer service life under harsh environmental conditions.

This is where (N)TSCGEWOEU-SR PLUS FO, a medium voltage flexible reeling cable with integrated fiber optic, plays a critical role.

Designed in accordance with DIN VDE 0250-813, this heavy-duty rubber insulated crane cable combines:

• Medium voltage power transmission up to 18/30 kV

• Extreme mechanical resistance

• Anti-twist reinforcement

• High tensile capacity

• Integrated optical fibers for control and monitoring

It is not simply a power cable. It is a structural component of high-performance reeling systems in mining and port infrastructure.

Understanding the Application Environment: Where Reeling Cables Fail First

Before analyzing the cable design, it is important to understand the real mechanical stress conditions in reeling applications.

1. Multi-Level Cable Guidance

In many crane and mining systems, the reel axis runs in the travel direction. The cable is not simply wound and unwound vertically; it is guided through:

• S-type directional changes

• Multi-plane routing systems

• Roller assemblies

• High-speed drums

This creates continuous torsional and bending stress.

2. High Reeling Speeds

Modern container cranes and stacker reclaimers can operate at reeling speeds of up to 240 m/min, generating dynamic tensile forces far beyond static load calculations.

3. Harsh Environmental Exposure

Applications often involve:

• UV radiation

• Ozone exposure

• Moisture and heavy rainfall

• Oil contamination

• Abrasive dust (especially in open-pit mining)

• Extreme temperature variations

A standard flexible power cable is simply not designed to survive these combined stresses.

Electrical Design: Medium Voltage Stability Under Dynamic Conditions

(N)TSCGEWOEU-SR PLUS FO is engineered for medium voltage systems requiring high reliability under mechanical movement.

Rated Voltage Options

Available voltage classes include:

• 3.6/6 kV

• 6/10 kV

• 8.7/15 kV

• 12/20 kV

• 14/25 kV

• 18/30 kV

This wide voltage range makes it suitable for:

• Harbour crane power supply

• Mining excavator systems

• Ship unloader installations

• Stacker and reclaimer drives

For operators searching for:

• 6/10 kV reeling cable for crane

• 12/20 kV flexible mining power cable

• 18/30 kV drum cable for harbour systems

this construction offers scalable performance.

Thermal Performance

Electrical reliability depends on thermal stability. Key parameters include:

• Fixed installation: -50°C to +80°C

• Reeling operation: -35°C to +80°C

• Maximum permissible conductor temperature: 90°C

• Short-circuit temperature: 250°C

This makes it suitable for cold climate ports and high-load mining operations alike.

Current-Carrying Capacity

Current ratings are calculated in accordance with DIN VDE 0298-4, including defined de-rating factors depending on installation and grouping conditions.

In dynamic systems, thermal design margins are essential to prevent insulation aging and conductor fatigue.

Conductor System: Flexibility Meets Electrical Efficiency

The conductor system uses:

• Plain copper wires

• Finely stranded

• Class 5 according to IEC 60228

Why is Class 5 important?

Because fine stranding increases flexibility, reduces bending stress concentration and improves dynamic performance during continuous drum reeling.

In high-speed crane applications, conductor fatigue often becomes the first failure point. Fine stranding significantly extends mechanical lifespan.

Advanced EPR Insulation System: Field Control Under Medium Voltage

Medium voltage cables require controlled electric field distribution to prevent partial discharge and insulation breakdown.

This cable features a triple-layer insulation design:

1. Inner semi-conductive stress control layer

2. EPR compound insulation (DIN VDE 0207-20)

3. Outer semi-conductive insulation shield

Why EPR?

Ethylene Propylene Rubber (EPR) offers:

• Excellent dielectric properties

• High thermal endurance

• Strong mechanical resilience

• Superior flexibility compared to XLPE in dynamic applications

For medium voltage reeling cable with EPR insulation, the advantage is clear:

It tolerates repeated bending without compromising insulation integrity.

Mechanical Engineering: Designed for Extreme Tensile and Torsional Loads

The mechanical structure defines whether a reeling cable survives years—or fails within months.

Maximum Tensile Load

• Maximum tensile load on conductor: 20 N/mm²

Depending on cross-section, permissible static/dynamic tensile forces are defined.

In mining and harbour cranes, dynamic loads during acceleration and deceleration can exceed static estimates. Proper tensile design is therefore critical.

Torsional Resistance

• Torsional stress tolerance: ±25° per meter

In multi-level cable guidance systems, torsional resistance prevents core distortion and premature conductor breakage.

Anti-Twist Reinforcement

Between inner and outer sheath layers, a synthetic braid reinforcement is applied.

This reinforcement:

• Acts as anti-twist protection

• Stabilizes cable geometry

• Distributes mechanical stress

• Reduces internal movement

In high mechanical resistance crane cable design, anti-twist protection is often the key differentiator between industrial-grade and heavy-duty solutions.

Heavy-Duty Rubber Sheath System: Environmental Protection in Harsh Conditions

Inner Sheath

• Extra heavy-duty rubber compound

• Quality 5GM5 based on DIN VDE 0207-21

• Completely fills interstices

• Color: red

Outer Sheath

• Extra heavy-duty 5GM5 rubber

• UV resistant

• Ozone resistant

• Moisture resistant

• Oil resistant (EN 60811-404)

• Flame retardant (EN 60332-1-2)

For operators seeking:

• UV resistant medium voltage crane cable

• Oil resistant rubber sheathed reeling cable

• Flame retardant mining power cable

this construction addresses all key environmental risks.

In open-pit mining, oil contamination and abrasive dust are common. In harbour applications, salt air and UV radiation dominate. The sheath must resist both chemical and weathering degradation.

Integrated Fiber Optic System: Enabling Smart Crane Infrastructure

Modern cranes are no longer purely mechanical machines. They are digital systems requiring high-speed data transmission.

(N)TSCGEWOEU-SR PLUS FO integrates fiber optics directly into the power cable.

Available Fiber Configurations

• 12 FO

• 2 × 12 FO

Fiber Types

• Single-mode E9/125 (ITU-T G.652D)

• Multimode G50/125 (OM2–OM4)

• Multimode G62.5/125

Typical Attenuation Values

• 0.5 dB/km @ 1310 nm (single-mode)

• 0.3 dB/km @ 1550 nm (single-mode)

• 3.0 dB/km @ 850 nm (multimode)

Why Integrated Fiber Matters

Instead of installing separate power and communication cables, operators gain:

• Reduced cable management complexity

• Lower installation costs

• Simplified drum design

• Improved system reliability

• Real-time monitoring and automation capability

For applications searching for:

• medium voltage reeling cable with 12 fiber optic

• crane power cable with integrated single-mode fiber

• mining reeling cable with data transmission

this integrated approach improves both mechanical and operational efficiency.

Cross-Section Range and Physical Dimensions

Available main core sizes range from:

• 3 × 25 mm²
  up to

• 3 × 240 mm²

Ground conductor is split into two parts and positioned in outer interstices for optimal balance.

Outer Diameter

Approximately 44 mm to 86 mm, depending on design and voltage class.

Approximate Cable Weight

Up to 13,350 kg/km in larger cross-sections.

Proper drum design must account for:

• Cable weight

• Minimum bending radius (DIN VDE 0298-3)

• Minimum distance for S-type directional changes: 20 × O.D.

These parameters are essential for long-term reeling reliability.

Compliance and Regulatory Framework

This cable complies with:

• DIN VDE 0250-813

• DIN VDE 0298-3

• DIN VDE 0298-4

• EN 60332-1-2

• EN 60811-404

• RoHS 2015/863/EU

• CPR 305/2011

For international port and mining projects, compliance ensures:

• Engineering acceptance

• Safety approval

• Insurance compliance

• Reduced project risk

Installation Considerations for Maximum Service Life

Even the best medium voltage reeling cable can fail prematurely if installation rules are ignored.

Key considerations:

1. Maintain proper bending radius according to DIN VDE 0298-3

2. Respect minimum S-type directional spacing (20 × O.D.)

3. Verify tensile load during dynamic operation

4. Ensure drum diameter compatibility

5. Consider de-rating factors under continuous load

Proper system design extends service life significantly.

Why Selecting the Correct Medium Voltage Reeling Cable Is Critical

Using an underspecified cable can lead to:

• Conductor fatigue failure

• Insulation breakdown

• Optical fiber damage

• Increased downtime

• Expensive crane shutdowns

In large container terminals or mining operations, even one hour of downtime can represent substantial financial loss.

Selecting a high tensile, anti-twist, EPR insulated medium voltage reeling cable with integrated fiber optic is therefore not a cost issue—it is a reliability decision.

Conclusion: Engineered for Extreme Industrial Reeling Systems

(N)TSCGEWOEU-SR PLUS FO is engineered to meet the demands of:

• Harbour container cranes

• Shipyard gantry systems

• Open-pit mining excavators

• Stacker reclaimers

• Heavy industrial material handling equipment

It combines:

✔ Medium voltage capability up to 18/30 kV
✔ EPR rubber insulation system
✔ High tensile strength (20 N/mm²)
✔ Anti-twist braid reinforcement
✔ Extra heavy-duty rubber sheath
✔ UV, oil and weather resistance
✔ Integrated fiber optic solutions
✔ High-speed reeling up to 240 m/min

For operators seeking a DIN VDE 0250-813 compliant medium voltage flexible reeling cable for crane and mining applications, this design provides a balanced solution of electrical performance, mechanical resilience and digital integration.

In demanding reeling environments, durability is not optional. It is engineered.