Drilling Mast Cable 600–2000 V — Blast-Hole Drill Power and Control Cable

Drilling mast cable 600–2000 V is a combined power and control cable engineered for rotary blast-hole drill masts, DC drive systems, festoons, suspended loops and moving power tracks on surface mining equipment. In a single round assembly, it integrates two extra-flexible power conductors, an uninsulated equipment grounding conductor and a jacketed multi-conductor control group so mast travel loops do not require separate bundled power and control leads.

Each power core uses rope-lay stranded ASTM B-33 tinned soft or annealed copper insulated with 90 °C ethylene-propylene rubber (EPR). From 1/0 AWG through 500 kcmil, high strand counts—ranging from 266 wires in 1/0 AWG to 1,221 wires in 500 kcmil—preserve flexing endurance across repeated vertical carriage travel along the drill mast.

Over the cabled core assembly, a non-conducting separator tape and an integral polypropylene reinforcing braid inside the mold-cured thermosetting rubber jacket resist mechanical elongation, abrasion, impact, oil, flame, ozone, acids and alkalis. When the cable is installed on a multi-layer drum reel rather than an open mast loop, apply the wound-layer ampacity correction factors from one to four layers.

Specify the required power conductor size (1/0 AWG to 500 kcmil), control-group core count and gauge, mast travel stroke or reel layer count, and termination glands with your enquiry. TEBAOFLEX manufactures custom lengths from a 50 m minimum order quantity with a standard lead time of 7–45 working days.

Explore the mining and tunneling cable range for related configurations.

For 2000 V NEMA WC 58 portable mining power and trailing cables on drill rigs, compare these constructions: Type G-GC Cable 2000V Portable Mining Power Cable (for 3-conductor power with symmetrical grounds and a ground-check pilot conductor); Type W Cable 2000V – Round 4/C, 3/C and Flat Options (for heavy-duty 2000 V round and flat power drops without an internal ground-check core). Verify mast loop radius, low-temperature cold-bend rating, and conductor count before ordering.

Construction

The representative construction illustrates 600–2000 V Drilling Mast Cable 2 × 4/0 AWG + Ground + 3-Core Control Group: two equal black EPR-insulated tinned-copper power cores at the lower left and right, one jacketed three-core control sub-assembly (black, white and red control cores) at the top, and one uninsulated flexible tinned-copper ground wire in the bottom interstitial valley, wrapped with non-conducting tape and enclosed in a polypropylene-braid-reinforced black thermosetting rubber jacket.

Applications

Select the power conductor gauge and control-group configuration to match the drill mast drive current, auxiliary control circuits and suspension or reeling hardware.

• Surface mining rotary blast-hole drill rigs: vertical mast loop feeding DC or AC rotary head drives and mast control circuits.
• Drill mast power tracks and guided carrier chains requiring high strand counts and controlled outside diameter tolerance (±5%).
• Heavy-duty suspended loops and festoon systems on mining, quarrying and bulk material-handling machinery.
• Multi-layer cable reels on mobile drilling and excavation equipment, sized using the 1-to-4 layer ampacity derating factors.
• Route the round cable through smooth saddle clamps or roller guides with generous bend radius, and anchor strain-relief grips at both the fixed mast structure and moving carriage so the electrical conductors never support mechanical hoist loads.

When specifying power feeds for underground drill jumbos and rotary blast-hole drills, consult these resources: Type G-GC Cable Solution for Underground Drill Jumbos (for 2 kV trailing reel cables feeding electro-hydraulic underground face drills); SHD-GC Cable 2kV-25kV Mining Power Cable (for 2 kV to 25 kV shielded trailing cables supplying high-voltage pit drills and shovels). Confirm vertical mast travel, jacket oil/mud resistance, and strain relief hardware.

Specifications

Metric insulation thicknesses, nominal outside diameters and approximate cable masses in kg/km are rounded engineering conversions of the primary imperial specification values.

Listed continuous-duty ampacities are calculated for a +90 °C conductor temperature in +40 °C ambient air with the cable in free air (such as a suspended mast loop or festoon).

When the cable is wound on a drum reel, multiply the single-cable free-air ampacity by the applicable reel correction factor for 1, 2, 3 or 4 wound layers.

Nominal cable outside diameters and weights are subject to a ±5% manufacturing tolerance. Confirm gland entry range and clamp saddle bore against the tolerance band before installation.

Every size includes the interstitial tinned-copper ground wire and space for the user-specified control group; state the required number and gauge of control cores when requesting a quotation.

Standards

ICEA Portable Mining Cable Standards Overview