RONDOFLEX & PLANOFLEX Crane Festoon & Travelling Cable Series (0.6/1 kV)
Heavy-duty 0.6/1 kV overhead crane and port gantry festoon cables—combining the round RONDOFLEX ((N)GRDGÖU-J/O) series and the flat PLANOFLEX (NGFLGÖU-J/O 0.6/1 kV) series—engineered to DIN VDE 0250-809 and DIN VDE 0250-814 for motorized I-beam/box-girder festoon trolleys, ship-to-shore boom loops and high-bay stacker cranes. Constructed with Class 5/6 flexible copper conductors, +90 °C 3GI3 EPR core insulation and a weather-, oil- and flame-resistant 5GM3/5GM5 polychloroprene rubber sheath.
High-speed container crane boom festoons, steelworks ladle crane trolleys and automated bulk-handling gantries use two complementary 0.6/1 kV festoon geometries: round cables (RONDOFLEX series) for heavy single- and multi-core loops that must resist wind-induced lateral sway, and flat cables (PLANOFLEX series) for compact multi-tier stacking where trolley parking length and saddle bend radius are constrained.
The round RONDOFLEX series (aligned with DIN VDE 0250-814 / (N)GRDGÖU-J/O) combines Class 5/6 flexible copper conductors and +90 °C 3GI3 EPR core insulation with a pressure-extruded inner elastomer bedding and a heavy-duty black 5GM3/5GM5 polychloroprene outer sheath. Because the inner bedding locks the short-pitch core assembly without stiff metallic armour, RONDOFLEX hangs smoothly in deep catenary loops on motorized festoon carriages running at travel speeds up to 240 m/min.
The flat PLANOFLEX series (aligned with DIN VDE 0250-809 / NGFLGÖU-J/O) aligns 4 to 42 insulated cores in one or two parallel horizontal rows inside a flexible 5GM3 polychloroprene flat web jacket, enabling minimum dynamic bending radii down to 8 × to 10 × cable thickness. Jiangsu Tebaoflex Special Cable Co., Ltd. holds third-party verification of conformity (ICR, cert. ICR/VC/HTT260331) against the DIN VDE 0250 series based on test reports XMT0202600330W/EMC and /LVD (2025-03-30).
Indicate whether your festoon system uses round RONDOFLEX or flat PLANOFLEX saddles, along with core count, cross-section, loop depth and trolley travel speed. TEBAOFLEX manufactures custom festoon lengths from a 50 m minimum order quantity with a standard lead time of 7–45 working days.
Explore the port and festoon cable range for related configurations.
For related round and flat VDE rubber crane festoon cables, compare these specifications: (N)GRDGOEU-J/-O 0.6/1 kV Round Festoon Cable (for VDE-designated extra-flexible rubber round festoon loops at 0.6/1 kV); (N)GFLCGÖU-J/O 0.6/1 kV Screened Rubber Flat Festoon & Reeling Cable (for EMC-screened flat rubber festoon and VFD crane drive circuits at 0.6/1 kV). Verify round versus flat trolley saddle geometry, core count, and bend radius before ordering.
Construction
The representative construction illustrates RONDOFLEX (N)GRDGÖU-J 0.6/1 kV 12G2.5 mm² Round Crane Festoon Cable (alongside PLANOFLEX flat geometry): 12 Class 5/6 extra-flexible copper cores insulated with +90 °C 3GI3 EPR cabled in a short pitch around a central elastomeric filler, locked in a vulcanized light-grey 5GM3 inner sheath and protected by a supple, flame- and oil-resistant black 5GM3/5GM5 polychloroprene rubber outer sheath.
| Component | Material and construction |
|---|---|
| Conductors | Extra-flexible Class 5 or Class 6 stranded bare or tinned copper conductors per DIN EN 60228 / VDE 0295 (1.5 mm² to 240 mm²). |
| Core insulation | Heat- and ozone-resistant ethylene-propylene rubber (EPR compound 3GI3 per DIN VDE 0207-20) rated for +90 °C continuous conductor operation. |
| Core lay & geometry (RONDOFLEX vs. PLANOFLEX) | RONDOFLEX (Round): short-pitch concentric lay around a central elastomer profile with an extruded 5GM3 inner bedding. PLANOFLEX (Flat): cores arranged side by side in a parallel horizontal row. |
| Strain relief (RONDOFLEX-T / high-speed) | Integrated central synthetic support element or textile braid on high-speed port festoon variants to absorb trolley acceleration forces up to 1.5 m/s². |
| Outer jacket | Heavy-duty black polychloroprene rubber (PCP compound 5GM3 / 5GM5 per DIN VDE 0207-21), resistant to marine salt spray, UV, ozone, oil (EN 60811-404) and flame propagation (IEC 60332-1-2). |
Applications
Select round RONDOFLEX for high-wind outdoor port crane boom festoons (where round profiles minimize aerodynamic drag and twist) and flat PLANOFLEX for indoor/outdoor C-rail and I-beam trolleys requiring tight saddle radii.
- Ship-to-shore (STS) container crane boom catenary festoon systems operating at trolley speeds up to 240 m/min.
- Overhead bridge cranes, steelmill charging cranes, foundry hoists and bulk grab cranes with I-beam or box-beam festoon carriages.
- Automated high-bay warehouse stacker cranes, shipboard gantry cranes and electroplating/galvanizing hoist lines.
- Flexible single-core (1×50 to 1×240 mm²), multi-core power (4G2.5 to 4G120 mm²) and multi-core control (7G1.5 to 42G2.5 mm²) festoon loops.
For container crane boom festoons, steel-mill overhead cranes, and high-speed trolley tracks, review these references: Festoon System: Components, Track Types, and Industrial Cable Selection (for trolley spacing, loop depth, and cable pack stacking engineering); (N)GRDGCGOEU-J 0.6/1 kV Screened Festoon Cable (for round copper-screened rubber festoon cables on inverter-driven cranes at 0.6/1 kV). Confirm trolley travel speed, loop sag, and outdoor weather resistance before installation.
Specifications
| Parameter | Value |
|---|---|
| Rated voltage (U0/U) | 0.6/1 kV (RONDOFLEX & heavy PLANOFLEX); 300/500 V & 0.6/1 kV (PLANOFLEX control) |
| Maximum continuous conductor temperature | +90 °C (+250 °C short-circuit, 5 s max.) |
| Dynamic operating temperature range | -35 °C to +80 °C (standard 5GM3/5GM5 elastomer); -40 °C cold-climate formulation available |
| Maximum festoon trolley travel speed | Up to 240 m/min (motorized port crane boom festoon); up to 120 m/min (towed C-rail/I-beam festoon) |
| Minimum dynamic bending radius | RONDOFLEX (Round): 6 × D to 7.5 × D; PLANOFLEX (Flat): 8 × to 10 × cable thickness (H) |
| Permissible dynamic tensile load | 15 N/mm² of total copper cross-section (up to 20 N/mm² on strain-relieved RONDOFLEX-T) |
| Third-party conformity reference | Third-party verification of conformity (ICR, cert. ICR/VC/HTT260331) against DIN VDE 0250 series based on test reports XMT0202600330W/EMC and /LVD |
| Commercial supply terms | Minimum order quantity 50 m; manufacturing lead time 7–45 working days |
| Series & profile | Core count × nominal cross-section (mm²) | Nominal outer size — Ø or H × W (mm) | Max. dynamic tensile load (N) | Min. dynamic bending radius (mm) | Continuous ampacity at 30 °C in free air (A) | Approx. cable weight (kg/km) |
|---|---|---|---|---|---|---|
| RONDOFLEX Round 0.6/1 kV | 1×70 | 18.8 | 1,050 | 115 | 285 | 860 |
| RONDOFLEX Round 0.6/1 kV | 1×95 | 21.2 | 1,425 | 130 | 350 | 1,140 |
| RONDOFLEX Round 0.6/1 kV | 1×120 | 23.4 | 1,800 | 140 | 410 | 1,420 |
| RONDOFLEX Round 0.6/1 kV | 1×150 | 25.6 | 2,250 | 155 | 475 | 1,740 |
| RONDOFLEX Round 0.6/1 kV | 1×185 | 28.0 | 2,775 | 170 | 545 | 2,130 |
| RONDOFLEX Round 0.6/1 kV | 1×240 | 31.4 | 3,600 | 190 | 645 | 2,740 |
| RONDOFLEX Round 0.6/1 kV | 4G6 | 16.8 | 360 | 105 | 53 | 460 |
| RONDOFLEX Round 0.6/1 kV | 4G10 | 20.2 | 600 | 125 | 74 | 710 |
| RONDOFLEX Round 0.6/1 kV | 4G16 | 23.2 | 960 | 140 | 99 | 1,010 |
| RONDOFLEX Round 0.6/1 kV | 4G25 | 27.8 | 1,500 | 170 | 131 | 1,490 |
| RONDOFLEX Round 0.6/1 kV | 4G35 | 31.2 | 2,100 | 190 | 162 | 1,960 |
| RONDOFLEX Round 0.6/1 kV | 4G50 | 36.0 | 3,000 | 220 | 202 | 2,690 |
| RONDOFLEX Round 0.6/1 kV | 4G70 | 40.6 | 4,200 | 245 | 250 | 3,580 |
| RONDOFLEX Round 0.6/1 kV | 4G95 | 46.0 | 5,700 | 280 | 301 | 4,680 |
| RONDOFLEX Round 0.6/1 kV | 12G1.5 | 17.6 | 270 | 110 | 13 | 450 |
| RONDOFLEX Round 0.6/1 kV | 18G1.5 | 20.4 | 405 | 125 | 11 | 640 |
| RONDOFLEX Round 0.6/1 kV | 24G1.5 | 23.6 | 540 | 145 | 10 | 850 |
| RONDOFLEX Round 0.6/1 kV | 12G2.5 | 20.4 | 450 | 125 | 18 | 660 |
| RONDOFLEX Round 0.6/1 kV | 18G2.5 | 23.8 | 675 | 145 | 15 | 950 |
| RONDOFLEX Round 0.6/1 kV | 24G2.5 | 27.4 | 900 | 165 | 13 | 1,260 |
| PLANOFLEX Flat 0.6/1 kV | 4G4 | 9.2 × 28.0 | 240 | 85 | 41 | 420 |
| PLANOFLEX Flat 0.6/1 kV | 4G10 | 12.4 × 38.6 | 600 | 115 | 74 | 860 |
| PLANOFLEX Flat 0.6/1 kV | 4G25 | 16.8 × 53.6 | 1,500 | 155 | 131 | 1,890 |
| PLANOFLEX Flat 0.6/1 kV | 4G50 | 21.6 × 70.0 | 3,000 | 200 | 202 | 3,420 |
| PLANOFLEX Flat 0.6/1 kV | 12G1.5 | 6.2 × 47.0 | 270 | 60 | 13 | 490 |
| PLANOFLEX Flat 0.6/1 kV | 18G2.5 (Twin-Row) | 13.6 × 48.4 | 675 | 125 | 15 | 1,190 |
These are the standards this construction is designed and manufactured to (DIN VDE 0250-809 for PLANOFLEX flat cables and DIN VDE 0250-814 / (N)GRDGÖU for RONDOFLEX round cables).
On round festoon systems, clamp each cable in contoured rubber saddle blocks with a saddle arc radius of at least 6 × to 7.5 × cable outside diameter.
Continuous current ratings are stated at +30 °C ambient air per DIN VDE 0298-4.
Standards
| Standard or specification | Application |
|---|---|
| DIN VDE 0250-814 / (N)GRDGÖU | 0.6/1 kV round double-sheathed flexible rubber festoon cables (RONDOFLEX series) for heavy mechanical duty. |
| DIN VDE 0250-809 / NGFLGÖU | Flexible EPR-insulated polychloroprene-sheathed flat festoon cables (PLANOFLEX series). |
| DIN EN 60228 / VDE 0295 | Class 5 and Class 6 flexible stranded copper conductors. |
| IEC 60332-1-2 & EN 60811-404 | Flame retardancy and mineral-oil resistance for crane festoon service. |
Related cable options
Compare these cable options by service combination, movement, load, voltage and transmission requirement.
(N)GRDGCGOEU-J 0.6/1 kV Screened Festoon Cable
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NGFLGOEU Flat Festoon Cable 300/500V
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E-RTG & Automated Container Crane (ASC / RMG) High-Speed Reeling Cable (0.6/1–20 kV)
A related cable option for a different application or duty profile.
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