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

on15/05/2026

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

FLEXIFESTOON® SEOOW YELLOW represents FeiChun's entry into the low-voltage festoon and temporary power market. The nomenclature requires careful explanation to distinguish this product from the high-voltage FLEXIDRUM series: FLEXIFESTOON Product Nomenclature: FLEXIFESTOON® = Product family name Flex = Flexible (emphasis on bending & handling) Festoon = Strung overhead in continuous runs (typical festoon lighting application) SEOOW = Industry-standard designation S = Service cord (temporary, not permanent installation) E = Elastomer jacket (flexible sheath) OO = Oil-resistant conductor insulation (TPE qualifies as oil-resistant) W = Weather-resistant sheath (water, ozone, UV resistant) SEOOW is defined in: UL 62 (Standard for Flexible Cords and Cables) CSA 22.2 No. 49 (Canadian equivalent) NFPA 70 National Electrical Code (NEC) Article 400 YELLOW designation: Color: RAL 1021 (traffic yellow, high visibility) Safety significance: Yellow cords attract attention in job sites Practical purpose: Easy to identify, prevent trips/entanglement Contrast with FLEXIDRUM series: FLEXIDRUM (High-Voltage MV Cable): Voltage: 3.6 kV to 20/35 kV (power distribution) Temperature: −40 to +80°C (standard industrial) Application: Mobile mining/tunneling equipment (capital-intensive) Size: Large diameter, heavy (3–12 kg/km) FLEXIFESTOON (Low-Voltage Service Cord): Voltage: 600V (light/power temporary use) Temperature: −60 to +105°C (extreme environmental range) Application: Festoon lighting, temporary site power, outdoor events Size: Small diameter, lightweight (0.05–0.3 kg/m) Cost: Consumer/contractor-grade (not specialty industrial)

Technical Department

on15/05/2026

FLEXIFESTOON® SEOOW YELLOW

FLEXIFESTOON® SEOOW YELLOW represents FeiChun’s entry into the low-voltage festoon and temporary power market. The nomenclature requires careful explanation to distinguish this product from the high-voltage FLEXIDRUM series: FLEXIFESTOON Product Nomenclature: FLEXIFESTOON® = Product family name Flex = Flexible (emphasis on bending & handling) Festoon = Strung overhead in continuous runs (typical festoon lighting application) SEOOW = Industry-standard designation S = Service cord (temporary, not permanent installation) E = Elastomer jacket (flexible sheath) OO = Oil-resistant conductor insulation (TPE qualifies as oil-resistant) W = Weather-resistant sheath (water, ozone, UV resistant) SEOOW is defined in: UL 62 (Standard for Flexible Cords and Cables) CSA 22.2 No. 49 (Canadian equivalent) NFPA 70 National Electrical Code (NEC) Article 400 YELLOW designation: Color: RAL 1021 (traffic yellow, high visibility) Safety significance: Yellow cords attract attention in job sites Practical purpose: Easy to identify, prevent trips/entanglement Contrast with FLEXIDRUM series: FLEXIDRUM (High-Voltage MV Cable): Voltage: 3.6 kV to 20/35 kV (power distribution) Temperature: −40 to +80°C (standard industrial) Application: Mobile mining/tunneling equipment (capital-intensive) Size: Large diameter, heavy (3–12 kg/km) FLEXIFESTOON (Low-Voltage Service Cord): Voltage: 600V (light/power temporary use) Temperature: −60 to +105°C (extreme environmental range) Application: Festoon lighting, temporary site power, outdoor events Size: Small diameter, lightweight (0.05–0.3 kg/m) Cost: Consumer/contractor-grade (not specialty industrial)

VCT Cabtyre Cable Architecture & Design Philosophy Purpose & Application Scope: VCT (Vinyl Insulated Vinyl Sheathed Cabtyre) cables represent engineered solutions for mobile electrical equipment requiring robust, flexible power distribution without permanent installation infrastructure. Unlike fixed installation cables designed for long-term underground or indoor wiring, VCT cables are specifically engineered for portable applications where cables experience frequent movement, mechanical stress, temporary disconnection/reconnection, and harsh operational environments typical of factories, mines, farms, construction sites, and emergency power systems. Core Engineering Philosophy: VCT cable design emphasizes mechanical durability and flexibility rather than thermal optimization or fire safety specifications. Heavy-duty PVC outer sheathing provides superior abrasion resistance, oil and solvent resistance, and mechanical toughness compared to conventional power cable sheaths. Class 5 extra-flexible stranding enables tight coiling, frequent movement through conduits and restrictive spaces, and repetitive bending cycles without insulation cracking or conductor breaking. This engineering approach prioritizes cable longevity in dynamic, portable applications over size optimization or thermal performance. Market Position & Regulatory Compliance: VCT cables comply with KS C IEC 60502-1 international standards and equivalent national specifications. The 0.6/1kV rating addresses portable equipment operating under 400V three-phase (approximately 230V single-phase) typical of industrial facilities worldwide. Portable power distribution standards in most jurisdictions permit VCT cables for temporary installations and mobile equipment connections where fixed infrastructure does not exist. The cabtyre cable design—with flexible stranding and durable sheathing—satisfies regulatory requirements for equipment that requires frequent electrical connection changes and mechanical movement.

Technical Department

on14/04/2026

0.6/1kV VCT Vinyl Insulated Vinyl Sheathed Cabtyre Cable

VCT Cabtyre Cable Architecture & Design Philosophy Purpose & Application Scope: VCT (Vinyl Insulated Vinyl Sheathed Cabtyre) cables represent engineered solutions for mobile electrical equipment requiring robust, flexible power distribution without permanent installation infrastructure. Unlike fixed installation cables designed for long-term underground or indoor wiring, VCT cables are specifically engineered for portable applications where cables experience frequent movement, mechanical stress, temporary disconnection/reconnection, and harsh operational environments typical of factories, mines, farms, construction sites, and emergency power systems. Core Engineering Philosophy: VCT cable design emphasizes mechanical durability and flexibility rather than thermal optimization or fire safety specifications. Heavy-duty PVC outer sheathing provides superior abrasion resistance, oil and solvent resistance, and mechanical toughness compared to conventional power cable sheaths. Class 5 extra-flexible stranding enables tight coiling, frequent movement through conduits and restrictive spaces, and repetitive bending cycles without insulation cracking or conductor breaking. This engineering approach prioritizes cable longevity in dynamic, portable applications over size optimization or thermal performance. Market Position & Regulatory Compliance: VCT cables comply with KS C IEC 60502-1 international standards and equivalent national specifications. The 0.6/1kV rating addresses portable equipment operating under 400V three-phase (approximately 230V single-phase) typical of industrial facilities worldwide. Portable power distribution standards in most jurisdictions permit VCT cables for temporary installations and mobile equipment connections where fixed infrastructure does not exist. The cabtyre cable design—with flexible stranding and durable sheathing—satisfies regulatory requirements for equipment that requires frequent electrical connection changes and mechanical movement.

60227 KS IEC 53 (VCTF) vinyl sheath cords represent the industry-standard approach to consumer and commercial electrical power distribution—cords engineered for flexibility, durability, and cost-effectiveness in indoor applications. The VCTF designation (Vinyl Cord Twist Flexible) indicates the specific construction standard combining polyvinyl chloride (PVC) insulation with PVC sheath, multi-strand flexible conductors, and optimized designs for appliances, commercial equipment, audio systems, and lighting fixtures. Fundamental Design Philosophy: VCTF cords prioritize flexibility, ease of use, and cost-effectiveness for consumer and commercial markets. Unlike fixed-installation cables optimized for stationary deployment, VCTF cords must accommodate frequent coiling, uncoiling, movement, and mechanical stress inherent in portable and temporary equipment. The PVC material system provides excellent balance of electrical performance, mechanical flexibility, environmental resistance, and manufacturing economy. Core Voltage Rating: 300/500V: The 300/500V rating indicates nominal 300V continuous operating voltage (typical single-phase consumer power supply) with 500V maximum transient overvoltage tolerance. This moderate voltage rating optimizes cost and safety for consumer applications—substantially lower than industrial cables, yet providing adequate safety margin for typical household and commercial electrical systems. Temperature Operating Limit: 70°C: Maximum continuous conductor temperature limited to 70°C (158°F), appropriate for consumer appliances and indoor commercial equipment where elevated temperature operation is not anticipated. This 70°C rating represents industry-standard performance for general-purpose indoor cords—higher temperature ratings available for specialized applications through engineered variants.

Technical Department

on14/04/2026

VCTF Vinyl Sheath Cord Family (300/500V)

60227 KS IEC 53 (VCTF) vinyl sheath cords represent the industry-standard approach to consumer and commercial electrical power distribution—cords engineered for flexibility, durability, and cost-effectiveness in indoor applications. The VCTF designation (Vinyl Cord Twist Flexible) indicates the specific construction standard combining polyvinyl chloride (PVC) insulation with PVC sheath, multi-strand flexible conductors, and optimized designs for appliances, commercial equipment, audio systems, and lighting fixtures. Fundamental Design Philosophy: VCTF cords prioritize flexibility, ease of use, and cost-effectiveness for consumer and commercial markets. Unlike fixed-installation cables optimized for stationary deployment, VCTF cords must accommodate frequent coiling, uncoiling, movement, and mechanical stress inherent in portable and temporary equipment. The PVC material system provides excellent balance of electrical performance, mechanical flexibility, environmental resistance, and manufacturing economy. Core Voltage Rating: 300/500V: The 300/500V rating indicates nominal 300V continuous operating voltage (typical single-phase consumer power supply) with 500V maximum transient overvoltage tolerance. This moderate voltage rating optimizes cost and safety for consumer applications—substantially lower than industrial cables, yet providing adequate safety margin for typical household and commercial electrical systems. Temperature Operating Limit: 70°C: Maximum continuous conductor temperature limited to 70°C (158°F), appropriate for consumer appliances and indoor commercial equipment where elevated temperature operation is not anticipated. This 70°C rating represents industry-standard performance for general-purpose indoor cords—higher temperature ratings available for specialized applications through engineered variants.

Ethylene Propylene Rubber (EPR) insulated cables represent the professional approach to flexible electrical distribution—cables engineered to accommodate dynamic deployment, repetitive coiling/uncoiling, temperature variation, and mechanical stress inherent in portable and industrial equipment applications. Unlike fixed-installation cables optimized for stationary performance, EPR cables balance electrical performance, mechanical flexibility, environmental durability, and cost-effectiveness required for equipment requiring frequent relocation or deployment flexibility. Fundamental Design Philosophy: EPR cables employ elastomeric insulation material (ethylene propylene rubber) selected specifically for flexibility maintenance across wide temperature range. This material provides sustained flexibility even at cold temperatures (−40°C minimum), maintains electrical properties across elevated temperature range (continuous operation to +100°C), and demonstrates superior resistance to ozone, UV radiation, and environmental contamination characteristic of portable equipment deployment. Conductor Architecture for Flexibility: Rather than single-strand conductors (rigid, prone to breaking under flex stress), EPR cables employ multi-strand conductor design—typically 7, 19, 37, or 61 individual wires woven together. This multi-strand architecture enables smooth bending without conductor fracture, distributes mechanical stress across multiple strands preventing single-point failure, and maintains consistent electrical performance through tens of thousands of flex cycles. Voltage Rating & Safety Margin: Standard 0.6/1KV rating provides nominal 600V operating margin with 1000V safety ceiling—appropriate for most industrial equipment, portable power systems, and temporary installations. The dual rating nomenclature indicates 0.6KV continuous operating voltage with 1KV maximum transient voltage tolerance, providing balanced safety margin against impulse transients and surge events.

Technical Department

on14/04/2026

Ethylene Propylene Rubber (EPR) Insulated Cable Family

Ethylene Propylene Rubber (EPR) insulated cables represent the professional approach to flexible electrical distribution—cables engineered to accommodate dynamic deployment, repetitive coiling/uncoiling, temperature variation, and mechanical stress inherent in portable and industrial equipment applications. Unlike fixed-installation cables optimized for stationary performance, EPR cables balance electrical performance, mechanical flexibility, environmental durability, and cost-effectiveness required for equipment requiring frequent relocation or deployment flexibility. Fundamental Design Philosophy: EPR cables employ elastomeric insulation material (ethylene propylene rubber) selected specifically for flexibility maintenance across wide temperature range. This material provides sustained flexibility even at cold temperatures (−40°C minimum), maintains electrical properties across elevated temperature range (continuous operation to +100°C), and demonstrates superior resistance to ozone, UV radiation, and environmental contamination characteristic of portable equipment deployment. Conductor Architecture for Flexibility: Rather than single-strand conductors (rigid, prone to breaking under flex stress), EPR cables employ multi-strand conductor design—typically 7, 19, 37, or 61 individual wires woven together. This multi-strand architecture enables smooth bending without conductor fracture, distributes mechanical stress across multiple strands preventing single-point failure, and maintains consistent electrical performance through tens of thousands of flex cycles. Voltage Rating & Safety Margin: Standard 0.6/1KV rating provides nominal 600V operating margin with 1000V safety ceiling—appropriate for most industrial equipment, portable power systems, and temporary installations. The dual rating nomenclature indicates 0.6KV continuous operating voltage with 1KV maximum transient voltage tolerance, providing balanced safety margin against impulse transients and surge events.