FLEXIFESTOON® DLO
DLO Cable Classification: DLO designation meaning: DLO = Deep Level Operations (primary interpretation) Alternative: Diesel Locomotive Overhead (secondary) Context: Used extensively in South African and Australian deep mines where locomotive-hauled trains move ore underground Power supply: 2000V AC fed overhead to locomotive pantograph Deep Level Operations (mining context): Depth: >2,000 meters (6,500+ feet) below surface Pressure: 200+ atmospheres (extreme hydrostatic) Temperature: Geothermal heating to +35–40°C at depth (before cooling) Moisture: 100% relative humidity (saturated conditions) Chemical exposure: Sulfides, nitrates, acidic water Cable requirement: Must withstand extreme environmental stress DLO 2000V: Engineered specifically for these conditions 2000V voltage class significance: Why 2000V (not 1000V or 10kV)? – 1000V: Insufficient for long underground raceways (voltage drop) – 2000V: Sweet spot for deep mine distribution (good efficiency) – 10kV: Overkill for mobile equipment, insulation too thick Power efficiency at depth: P_loss = I²R per kilometer of cable run At 2000V, current = P / (2000 × √3) = 70–80% lower than 240V Over 5 km underground run: Voltage drop acceptable Voltage stress on insulation: Peak voltage (AC peak): 2000 × √2 / 1.414 ≈ 2.8 kV peak Test voltage: 4 kV (1.4× peak, safety margin) Partial discharge inception voltage (PDIV): >5 kV (safe margin) Single-core requirement: Mining locomotives: Three single-core cables run overhead in catenary Reason: Parallel path allows independent cable routing Mechanical advantage: Individual cables can flex, bend independently Installation: Easier to handle than 3-core bundle underground Application: One cable per phase (L1, L2, L3) + neutral if needed Typical setup: 3 × 2000V DLO cables for 3-phase power to locomotive


![GAALFLEX® TRAY 600 CY Lean 3 GAALFLEX® TRAY 600 CY Lean: UV and Oil-Resistant Shielded Flexible Tray Machine-Tool Cable with Lean-Optimized Diameter for North American Industrial Cable-Tray Installations and EMI-Sensitive Machinery Environments (UL 600V / WTTC 1000V Nominal Voltage, 2 kV Test Voltage, Overall Tinned Copper Braid Screen with Aluminum Tape Wrap Providing 75+ dB EMI Suppression with Lean-Optimized Diameter Preventing Cable-Size Inflation, Comprehensive 3–25 Multi-Core Portfolio with 1–35 mm² Continuous Cross-Section Range Enabling Complete Machinery Cable Specification from Control Through Feeder Distribution with EMI Protection, Flexible 20×D Bending Radius Optimized for Cable-Tray Routing While Maintaining Shield Integrity, Lean-Diameter Design Enabling Tight Installation Spaces Without EMI Performance Compromise, UV-Resistant Special PVC Compound Enabling Outdoor and Equipment Mounting Areas Without Degradation, Oil-Resistant Black PVC Sheath Protecting Against Industrial Machinery Fluids, Radiation Hardening [8×10⁷ cJ/kg] Supporting 40-Year Industrial Infrastructure Design Life, AWM Style 2587 and TC-ER Type Certification Enabling Cable-Tray and Exposed-Run Applications, Numbered EN 50334 Core Identification Providing Permanent Electrical Conductor Coding, Class 5 Flexible Red Copper per IEC 60228, PVC/Nylon Compound Insulation, Aluminum Tape + Tinned Copper Braid Screen + Tinned Copper Drain Wire, FT4 / FT1 / FT2 Flame-Retardant Certification, Temperature Range −40 to +90°C Supporting Extreme Industrial Environments, Complete North American Industrial Compliance Enabling Machinery OEM Acceptance with Integrated EMI Suppression, RoHS and CE Certification, Engineered for Industrial Cable-Tray Installations with EMI Protection, Machine-Tool Environments, Outdoor Industrial Applications, Radiation-Hardened Infrastructure, and Applications Where Shielded EMI Suppression, Complete Multi-Core Standardization, Lean-Diameter Optimization, Flexible Tray-Cable Rating, Outdoor Durability, and Professional Industrial Equipment Compliance Are Mission-Critical Requirements)](https://feichuncables.com/blog/wp-content/uploads/image-1376.avif)
![GAALFLEX® TRAY 1002 4 GAALFLEX® TRAY 1002: Comprehensive Multi-Standard Oil-Resistant Flexible Tray Machine-Tool Cable for North American Industrial Cable-Tray Installations, Direct Burial Deployment, and Wind-Turbine Applications (Dual UL 600V [TC-ER/MTW] and 1000V [AWM/WTTC] Nominal Voltage Options, 4 kV Test Voltage, Comprehensive 2–65 Multi-Core Portfolio with 0.5–240 mm² Continuous Cross-Section Range Enabling Complete Machinery Specification from Fine Control Through Extra-Heavy Utility Feeder Distribution, Direct-Burial Capability [Wet-Location Insulation per UL 1277.5.2] Enabling Underground Routing Without Conduit, Oil-Resistant Black PVC Sheath [UL OIL RES I] Protecting Against Industrial Machinery Fluids and Petroleum Exposure, Water-Resistant Insulation Supporting Submerged and Wet Applications, UV and Sunlight-Resistant Compound [EN 50396 / HD 605 A1] Enabling Outdoor Deployment, Flexible 13×D Bending Radius Optimized for Cable-Tray Routing and Equipment Mounting, GAALTHERM® 522 Insulation Compound, Class 5 Flexible Red Copper per IEC 60228, Numbered EN 50334 Core Identification, FT4 / FT1 Flame-Retardant Certification per UL 1685, Crushing Resistance per UL 1277 Sections 18.1–18.6 Enabling Direct Burial in Challenging Soil Conditions, Temperature Range −40 to +90°C [UL-AWM to +105°C] Supporting Extreme Industrial Environments, NFPA 79 2007 and NEC 336.10(7) Industrial Machinery Compliance, Complete North American Multi-Standard Compliance Enabling Machinery OEM Acceptance Across Diverse Applications Including Cable-Tray Installation, Direct Burial Underground Routing, Machine-Tool Equipment, Wind-Turbine Tray Cables, and Flexible Motor Supply Leads, RoHS and CE Certification)](https://feichuncables.com/blog/wp-content/uploads/image-1375.avif)
