Polyurethane Cable

Short Description:

PUR Cables are special-purpose wires and cables with polyurethane (PUR) as the outer sheath material, classified as oil- and wear-resistant industrial cables. They are primarily used for connecting industrial equipment in environments with oil contamination, low temperatures, and high dynamic bending

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Product Introduction

Selection Guidelines

Classification standard

Installation and Maintenance Precautions

Dimension	Detailed Description
Product Definition	A special type of industrial cable that uses Polyurethane (PUR) as the core insulation/sheath material, divided into two core categories: polyester-based polyurethane (PUR-P) and polyether-based polyurethane (PUR-E). It is the core category of special industrial cables with high wear resistance, high tear resistance, high flexibility, oil and corrosion resistance in the industrial field, which can adapt to extreme working conditions with high wear, high dynamics and strong corrosion that conventional PVC/XLPE/rubber cables cannot cover.
Core Materials	1. Core insulation/sheath materials: Polyester-based polyurethane (PUR-P), polyether-based polyurethane (PUR-E), flame retardant modified polyurethane, oil and corrosion resistant modified polyurethane, high tear resistant modified polyurethane, etc. For high dynamic scenarios, polyether-based polyurethane is preferred, and for oil resistant scenarios, polyester-based polyurethane is preferred; 2. Conductor: Oxygen-free copper, tinned copper, aluminum alloy conductor. For high flexibility/high frequency scenarios, high-purity oxygen-free copper/tinned copper conductor is preferred; 3. Supporting structure: Steel tape/steel wire armouring, copper mesh/aluminum foil shielding, water blocking and waterproofing, flame retardant and fire resistant composite structures can be provided to adapt to different scenario requirements.
Core Characteristics	1. Excellent high wear and high tear resistance: The wear resistance of polyurethane material is more than 5 times that of ordinary PVC cables, and the tear strength is far superior to rubber/XLPE cables. It can withstand high-frequency bending, dragging and friction, and is the preferred material for dynamic scenarios such as drag chains and robots; 2. Outstanding high flexibility and fatigue resistance: Low elastic modulus, excellent softness, can be laid with an extremely small bending radius, and the bending fatigue life can reach more than 10 million times, far exceeding ordinary cables; 3. Strong oil and chemical corrosion resistance: It can withstand most corrosive media such as mineral oil, synthetic oil, hydraulic oil, acid and alkali solutions, and organic solvents, adapting to oil/corrosion environments such as chemical industry, oil fields, ships, and new energy vehicles; 4. Excellent low temperature resistance and waterproof performance: The long-term allowable operating temperature can be as low as -50℃, the low temperature resistance is far superior to PVC cables, and it also has excellent waterproof sealing performance, adapting to humid, underwater and high humidity environments; 5. Stable electrical performance: High insulation resistance, low dielectric constant, small dielectric loss, no attenuation of electrical performance in a wide temperature range, which can stably transmit power and signals, adapting to high-frequency control and precision signal transmission scenarios; 6. Outstanding safety performance: It can be matched with high flame retardant, low smoke zero halogen and fire resistant structure, no dripping and no toxic gas release during combustion, adapting to scenarios with high fire safety requirements such as mines, rail transit, and new energy vehicles; 7. Strong microbial resistance and weather resistance: Polyether-based polyurethane has excellent mold and microbial resistance, as well as UV resistance, ozone resistance and salt spray resistance, adapting to outdoor, marine and humid harsh environments.
National/Industry Implementation Standards	Domestic standards: GB/T 12706 Series Standards for Extruded Insulated Power Cables, GB/T 5013 Series Standards for Rubber Insulated Cables, GB/T 2951 General Test Methods for Cable Insulation and Sheath Materials, MT 818 Series Standards for Coal Mine Cables, CJ/T 141 Cables for Urban Lighting, GB/T 19666 General Rules for Flame Retardant and Fire Resistant Wires and Cables; International standards: IEC 60502 Specification for Extruded Insulated Power Cables, IEC 60332 Test Methods for Burning Performance of Cables, UL 1581 Safety Standard for Wires and Cables, CE EN 50525 Industrial Cable Standard.
Core Application Scenarios	1. Industrial automation and robotics scenarios: High-frequency dynamic bending and high wear scenarios such as drag chain systems, industrial robots, automated production lines, and CNC machine tools; 2. New energy vehicle scenarios: On-board high-voltage wiring harnesses, charging pile cables, battery pack connecting wiring harnesses and other oil-resistant, wear-resistant, temperature-resistant and flame retardant scenarios; 3. Underground mine scenarios: Flame retardant and explosion-proof, high wear resistance, high flexibility scenarios for mining equipment, conveyors, underground control equipment in coal mines and metal mines; 4. Ship and marine scenarios: Seawater corrosion resistance, oil resistance, waterproofing, microbial resistance scenarios for ships, yachts, offshore platforms, underwater equipment; 5. Chemical and oilfield scenarios: Oil resistance, acid and alkali corrosion resistance, high wear resistance scenarios for chemical workshops, oilfield drilling, oil refining equipment; 6. Medical equipment scenarios: High flexibility, disinfection resistance, corrosion resistance scenarios for medical robots, surgical equipment, testing instruments; 7. Outdoor municipal scenarios: Waterproof, weather resistance, high wear resistance scenarios for urban landscape lighting, fountains, swimming pools, underground pipe galleries.

Model Selection Module	Core Points	Detailed Description and Red Line Requirements
Core Red Line Principles for Model Selection	Compliance First	1. All model selection must comply with the current national cable standards. For special scenarios such as mines, rail transit, new energy vehicles, fire emergency, compliant products with corresponding MA/3C/flame retardant and fire resistant mandatory certification must be selected; 2. Non-standard products without test reports and certification are strictly prohibited, especially in high dynamic, high wear, strong corrosion scenarios, which must ensure that the wear resistance, tear resistance, corrosion resistance all meet the standards; 3. The rated voltage, temperature resistance grade, wear resistance grade, flame retardant grade must be higher than the maximum requirements of the actual application scenario. Low-specification models are strictly prohibited from being used beyond their applicable scenarios.
	Scenario Matching	1. Fully adapt to the dynamic bending frequency, wear degree, environmental medium, laying method, mechanical external force, signal transmission requirements of the application scenario; 2. For high dynamic drag chain/robot scenarios, high tear resistance, high flexibility polyether-based polyurethane models must be selected; for oil/strong corrosion scenarios, polyester/oil resistant modified polyurethane models must be selected; for mine/fire safety scenarios, high flame retardant low smoke zero halogen models must be selected; for marine/underwater scenarios, seawater corrosion resistant, waterproof models must be selected; 3. For scenarios with mechanical external force and dragging risk, armoured structure must be selected; for high dynamic mobile scenarios, multi-strand ultra-fine flexible conductor structure must be selected; for high drop vertical laying scenarios, steel wire armoured structure must be selected; for signal transmission scenarios, shielded structure must be selected.
	Performance Adaptation	1. The wear and tear resistance, current carrying capacity, insulation performance, mechanical performance, corrosion resistance must fully meet the actual application requirements, with a 10%~20% redundancy reserved; 2. Operation beyond the rated voltage, long-term operating temperature, minimum bending radius, current carrying capacity, bending life is strictly prohibited; 3. Take into account the economy and construction convenience, give priority to general-purpose models, and avoid excessive customization that leads to difficulties in later operation and maintenance.
Core Parameter Selection	Core Material Selection	1. Conventional industrial/oil resistant scenarios: priority is given to polyester-based polyurethane (PUR-P) material, with excellent oil resistance, corrosion resistance and wear resistance, moderate cost; 2. High dynamic drag chain/robot/high flexibility scenarios: polyether-based polyurethane (PUR-E) material must be selected, with the best high tear resistance, high flexibility, low temperature resistance, fatigue bending resistance; 3. Mine/rail transit/fire safety scenarios: high flame retardant low smoke zero halogen modified polyurethane material must be selected, with flame retardant grade ≥ Class B, non-flame retardant, high smoke and toxic materials are strictly prohibited; 4. Chemical/oilfield/strong corrosion scenarios: priority is given to oil and corrosion resistant modified polyurethane material, to ensure that it can withstand the oil, acid and alkali, organic solvents and other corrosive media in the environment; 5. High frequency signal transmission scenarios: priority is given to low density polyurethane/PTFE composite insulation material, with low dielectric constant, small dielectric loss, excellent high frequency transmission performance; 6. Red line requirement: The long-term allowable operating temperature of the material must be higher than the maximum ambient temperature of the scenario + conductor operating temperature rise, with a safety redundancy of more than 20℃ reserved.
	Conductor Specification and Current Carrying Capacity Selection	1. Conductor material: oxygen-free copper conductor is selected for conventional scenarios, and tinned copper/silver-plated copper conductor is selected for high flexibility/high frequency/high humidity scenarios to improve oxidation and corrosion resistance; 2. Conductor cross section: ① Power supply line: 1.5mm² for load within 10A, 2.5mm² for 10A~16A load, 4mm² for 16A~25A load, 6mm² for 25A~32A load; ② Signal control line: 0.5mm²~0.75mm² for conventional control signals, 0.75mm²~1.0mm² for high-precision sensor/high frequency signals; 3. Current carrying capacity verification: According to the laying method, ambient temperature, and number of parallel cables, verify that the allowable current carrying capacity of the cable ≥ the actual maximum operating current, with a redundancy of more than 10% reserved; for high dynamic and high ambient temperature scenarios, the current carrying capacity shall be reduced by 10%~20% according to the national standard, and operation beyond the current carrying capacity is strictly prohibited; 4. Conductor structure: single strand/7 strand hard conductor is selected for fixed laying, multi-strand ultra-fine flexible conductor must be selected for high dynamic/flexible scenarios, single solid conductor is selected for high frequency scenarios to reduce skin effect, and high flexibility stranded flexible conductor must be selected for drag chain scenarios to ensure bending life.
	Structure Selection	1. Armouring structure: For outdoor direct burial, pipe laying, scenarios with mechanical impact and dragging risk, steel tape/steel wire armouring structure must be selected; for high drop, vertical laying, scenarios with large tensile force, steel wire armouring structure must be selected to improve tensile and anti-falling performance; 2. Shielding structure: For industrial control, signal transmission, and electromagnetic interference scenarios, copper mesh/aluminum foil shielding structure must be selected; for high frequency/high precision control scenarios, priority is given to overall shield + pair shield double layer shielding, with shielding coverage ≥85%, to avoid electromagnetic interference and signal distortion; 3. Waterproof structure: For underwater, swimming pool, fountain, high humidity scenarios, radial water blocking tape + waterproof sealing sheath + axial waterproof plug composite structure must be selected, with waterproof grade ≥IPX7, and must reach IPX8 for underwater scenarios; 4. Flexible structure: For drag chain, robot, high frequency dynamic bending scenarios, multi-strand ultra-fine flexible conductor + high tear resistant polyether-based polyurethane insulation + wear-resistant sheath composite structure must be selected, with the minimum bending radius up to 5 times the cable outer diameter, and bending life ≥10 million times; 5. Flame retardant structure: For mine, rail transit, new energy vehicle, fire emergency scenarios, high flame retardant low smoke zero halogen sheath + fire resistant mica tape composite structure must be selected to ensure power supply stability in fire scenarios.
	Voltage Grade Selection	1. Conventional control/signal lines: priority is given to 450/750V rated voltage, with strong versatility and complete accessory matching; 2. Low voltage power supply lines: priority is given to 0.6/1kV rated voltage, with more stable insulation performance and more sufficient current carrying capacity redundancy; 3. Medium voltage power supply/grid connection lines: 6kV, 10kV, 35kV rated voltage is selected according to the system voltage, and special medium voltage cable accessories of corresponding voltage grade must be matched; 4. High frequency/RF signal lines: special high frequency polyurethane cables with corresponding characteristic impedance (50Ω/75Ω) must be selected, and ordinary power/control cables are strictly prohibited from being replaced; 5. Red line requirement: The rated voltage of the cable must be higher than the maximum operating voltage of the system, and operation beyond the rated voltage is strictly prohibited.
Scenario Adaptation Verification	Environmental Parameter Verification	1. Temperature verification: confirm that the long-term allowable operating temperature of the cable ≥ the maximum ambient temperature of the scenario + conductor operating temperature rise, and for low temperature scenarios, confirm that the minimum allowable operating temperature of the cable ≤ the historical extreme minimum temperature of the scenario, with a safety redundancy of more than 10℃ reserved; 2. Corrosive medium verification: confirm that the corrosion resistance of the cable insulation/sheath material fully matches the corrosive media such as oil stain, acid and alkali, organic solvent, seawater in the environment, and ordinary polyurethane materials are strictly prohibited in strong corrosion scenarios; 3. Weather resistance verification: for long-term outdoor laying, modified polyurethane materials with UV resistance, ozone resistance and salt spray resistance must be selected, and ordinary indoor cables are strictly prohibited from being replaced; 4. Flame retardant safety verification: select cables of corresponding flame retardant/fire resistance grade according to the fire safety requirements of the scenario. Non-flame retardant, high smoke and toxic cables are strictly prohibited in indoor, mine and rail transit scenarios; 5. Microbial resistance verification: for marine, humid and underground scenarios, polyether-based polyurethane materials with mold and microbial resistance must be selected to avoid sheath aging and damage caused by microbial erosion.
	Laying Parameter Verification	1. Bending radius verification: confirm that the minimum allowable bending radius of the cable ≤ the actual laying bending radius. The minimum bending radius for fixed laying is ≥10 times the cable outer diameter, for mobile laying is ≥15 times the cable outer diameter, and for drag chain/high flexibility scenarios is ≥5 times the cable outer diameter. Laying with excessive small bending radius is strictly prohibited to avoid damage to the insulation layer and conductor core breakage; 2. Laying space verification: confirm that the outer diameter and structure of the cable fully match the laying drag chain, pipeline, cable tray and installation space to avoid installation failure; 3. Construction adaptability verification: confirm that the flexibility and structure of the cable adapt to the construction technology of the scenario, such as drag chain installation, equipment wiring, outdoor direct burial, etc., to avoid cable damage during construction; 4. Tensile resistance verification: for high drop, vertical laying, long-span laying scenarios, it must be confirmed that the tensile resistance of the cable ≥ the actual maximum axial tensile force, and operation beyond the tensile force is strictly prohibited.
	Electrical Performance Verification	1. Current carrying capacity verification: according to the laying method, ambient temperature, and number of parallel cables, verify that the allowable current carrying capacity of the cable ≥ the actual maximum operating current, with a redundancy of more than 10% reserved; 2. Voltage drop verification: verify that the line voltage drop of the cable ≤ the maximum allowable voltage drop of the system. For long-distance transmission, the conductor cross section must be increased or low loss materials must be selected; 3. Short circuit current verification: verify that the short circuit thermal stable current of the cable ≥ the maximum short circuit current of the system to ensure that the cable will not be broken down in short circuit scenarios; 4. Signal transmission performance verification: for signal control lines, the capacitance, attenuation and anti-interference performance of the cable must be verified to fully match the signal transmission requirements of the control system and sensors, without signal distortion and excessive attenuation.
Compliance and Supporting Selection	Certification and Test Confirmation	1. It must be confirmed that the target product has a complete factory test report, and the test items cover core indicators such as wear and tear resistance, oil and corrosion resistance, electrical performance, mechanical performance, flame retardant performance, especially bending life test for drag chain scenarios and medium resistance test for corrosion scenarios; 2. For special scenarios such as mines, rail transit, new energy vehicles, fire emergency, it must be confirmed that the product has corresponding mandatory certifications such as MA/3C/flame retardant and fire resistance, the certification is within the validity period, and the certification scope covers the selected specifications; 3. Non-standard products without certification and test reports are strictly prohibited, especially in high risk and high dynamic scenarios, which must ensure that the product performance meets the standards.
	Supporting Accessory Selection	1. Special accessories that fully match the voltage grade, specification, material and waterproof grade of the cable must be selected simultaneously, including wiring terminals, connectors, junction boxes, penetration pipes, fixing parts, cable accessories, etc.; 2. For medium voltage cables, special cold shrink/heat shrink accessories of corresponding voltage grade must be selected, and low voltage accessories are strictly prohibited from being replaced; 3. For high flame retardant/fire resistant scenarios, supporting accessories of corresponding flame retardant/fire resistant grade must be selected to ensure the safety performance matching of the whole link; 4. For shielded signal lines, suitable shielded connectors and grounding terminals must be selected to ensure reliable grounding of the shielding layer and up-to-standard anti-interference effect; 5. For underwater/high humidity scenarios, special sealing accessories with matching waterproof grade must be selected to ensure the waterproof sealing performance of the whole link.
	Operation and Maintenance Supporting Confirmation	1. Priority is given to models with large market holdings and strong versatility to ensure convenient later accessory supply and operation and maintenance replacement; 2. Excessively customized non-standard models are avoided to prevent excessive later operation and maintenance costs and replacement difficulties; 3. It is confirmed that the manufacturer has complete after-sales technical support and on-site construction guidance services, especially for high dynamic and high risk scenarios, to ensure the correct installation and use of the cable.

Classification Dimension	Sub-category	Core Definition and Characteristics	Typical Model Examples
By Core Insulation/Sheath Material (Core Classification)	Polyester-based Polyurethane (PUR-P) Cable	Uses polyester-based polyurethane as insulation/sheath material, with excellent oil resistance, chemical corrosion resistance and wear resistance, long-term operating temperature -40℃~80℃, moderate cost, and is the main category for general industrial scenarios	PUR-P, YVP, KVP, PUR-1
	Polyether-based Polyurethane (PUR-E) Cable	Uses polyether-based polyurethane as insulation/sheath material, with excellent high flexibility, high tear resistance, low temperature resistance, microbial resistance and hydrolysis resistance, long-term operating temperature -50℃~90℃, and is the preferred category for drag chain, robot and high dynamic scenarios	PUR-E, YVE, KVE, PUR-TR
	Flame Retardant Modified Polyurethane Cable	Uses modified polyurethane with environmentally friendly halogen-free flame retardant added as insulation/sheath material, with flame retardant grade up to Class A of GB 31247, low smoke zero halogen, no dripping, strong self-extinguishing property, while retaining the wear resistance and high flexibility of polyurethane, suitable for scenarios with high fire safety requirements such as mines, rail transit, new energy vehicles	ZR-PUR, ZB-PUR, ZA-PUR, WDZ-PUR
	Oil and Corrosion Resistant Modified Polyurethane Cable	Uses oil and chemical corrosion resistant modified polyurethane as insulation/sheath material, which can withstand strong corrosive media such as mineral oil, synthetic oil, hydraulic oil, acid and alkali solutions, and organic solvents, long-term operating temperature -40℃~100℃, suitable for strong corrosion environments such as chemical industry, oil fields, ships, new energy vehicles	PUR-F, PUR-FS, KVP-F, YVP-F
	High Tear Resistant Modified Polyurethane Cable	Uses high tear and high wear resistant modified polyurethane as insulation/sheath material, with tear strength and wear resistance far superior to ordinary polyurethane, while retaining high flexibility and low temperature resistance, suitable for drag chain, robot, high frequency dynamic bending scenarios	PUR-HS, PUR-TR, KVE-TR, YVE-TR
By Structural Characteristics	Non-armoured Polyurethane Cable	No metal armouring layer, simple structure, convenient laying, low cost, excellent flexibility, suitable for indoor/equipment fixed/mobile laying without mechanical external impact	PUR, YVP, KVP, PUR-E
	Armoured Polyurethane Cable	Added steel tape/steel wire/aluminum-plastic composite tape armouring layer, with excellent mechanical impact, compression, tensile and puncture resistance, high protection level, suitable for outdoor direct burial, pipe laying, scenarios with mechanical external force and dragging risk	PUR22, YVP22, KVP22, PUR32 (steel wire armoured)
	Shielded Polyurethane Cable	Added copper mesh/aluminum foil/tinned copper tape shielding layer, with extremely strong anti-electromagnetic interference and anti-radio frequency interference capability, high signal transmission stability, suitable for industrial control, automation, precision instruments, new energy vehicles and other signal transmission scenarios	KVP, YVP-P, PUR-P, KVP22P (overall shield + pair shield)
	High Flexibility Drag Chain Special Polyurethane Cable	Composite structure of multi-strand ultra-fine flexible conductor + high tear resistant polyether-based polyurethane insulation + wear-resistant sheath, which can achieve more than 10 million times of repeated bending without fracture, and the minimum bending radius can reach 5 times the cable outer diameter, suitable for high-frequency dynamic scenarios such as drag chains, robots, automated production lines	PUR-TR, YVE-TR, KVE-TR, PUR-HS-TR
	Waterproof Submersible Polyurethane Cable	Matched with radial water blocking tape + waterproof sealing sheath + axial waterproof plug composite structure, with waterproof grade up to IPX8, excellent water pressure resistance, corrosion resistance and microbial resistance, suitable for underwater, swimming pool, fountain, marine engineering and other humid/underwater environments	PUR-S, YVP-S, KVP-S, PUR-SUB
	Flame Retardant/Fire Resistant Polyurethane Cable	Matched with high flame retardant low smoke zero halogen sheath + fire resistant mica tape composite structure, with flame retardant grade up to Class A of GB 31247, which can maintain normal power supply for more than 90 minutes in 950℃ flame, suitable for scenarios with high safety requirements such as mines, rail transit, fire emergency	ZA-PUR, NH-PUR, WDZ-PUR, N-PUR
By Rated Voltage Grade	Low Voltage Control Polyurethane Cable	Rated voltage 450/750V, number of cores ranges from 2 to 61, suitable for industrial control, signal transmission, equipment supporting, and is the most widely used general-purpose category	KVP, KVE, PUR-K, KVP22
	Low Voltage Power Polyurethane Cable	Rated voltage 0.6/1kV, 1.8/3kV, number of cores ranges from 1 to 5, conductor cross section 1.5mm²~400mm², suitable for industrial low voltage power supply, equipment power supporting, with wear and oil resistance far superior to ordinary power cables	YVP, YVE, PUR, YVP22
	Medium Voltage Polyurethane Cable	Rated voltage 6kV, 10kV, 35kV, suitable for industrial medium voltage power supply, underground mine, new energy power station medium voltage transmission. Special medium voltage cable accessories must be matched, with excellent insulation and weather resistance	PUR-6kV, YVP22-10kV, PUR-35kV
	High Frequency/RF Polyurethane Cable	Rated voltage 50Ω/75Ω characteristic impedance, adopts solid high-purity silver-plated copper conductor + low density polyurethane insulation structure, with excellent high-frequency transmission performance, low attenuation and small standing wave ratio, suitable for 5G communication, radar, medical equipment, new energy vehicle high-frequency signal transmission scenarios	S-PUR, S-PUR-50, S-PUR-75, PUR-RF
By Laying Method	Fixed Laying Polyurethane Cable	Conductor is single strand/7 strand hard conductor, stable structure, high mechanical strength, excellent weather and corrosion resistance, suitable for long-term fixed laying scenarios such as indoor, tunnel, pipeline, outdoor direct burial	PUR, YVP, YVP22, KVP22
	Mobile Laying Polyurethane Cable	Conductor is multi-strand ultra-fine flexible conductor, excellent flexibility, fatigue fracture resistance, can be bent repeatedly, suitable for equipment movement, drag chain, robot, frequent bending dynamic scenarios, and is the core advantage category of polyurethane cables	PUR-TR, YVE-TR, KVE-TR, PUR-HS
	High Drop/Vertical Laying Polyurethane Cable	Matched with steel wire armouring + anti-slip structure, excellent tensile and anti-falling performance, strong weather and wear resistance, suitable for high drop vertical laying scenarios in mines and tunnels, and can withstand large axial tensile force	PUR32, YVP32, KVP32
	Outdoor Direct Burial Laying Polyurethane Cable	Matched with steel tape armouring + rodent and ant proof + waterproof sheath composite structure, with a protection level up to IP68, UV resistance, heat and humidity resistance, salt spray resistance, corrosion resistance, suitable for long-term outdoor direct burial laying scenarios	YVP22, PUR22, KVP22
By Application Scenario	General Industrial Polyurethane Cable	Designed for conventional industrial scenarios, with wear resistance, oil resistance, high flexibility, moderate cost, suitable for general scenarios such as automated production lines, CNC machine tools, equipment supporting	PUR, YVP, KVP, PUR-P
	Special Polyurethane Cable for Drag Chain and Robot	Designed for high-frequency dynamic scenarios of drag chains and industrial robots, with high tear resistance, high wear resistance, high flexibility, fatigue bending resistance, suitable for more than 10 million times of repeated bending scenarios	PUR-TR, YVE-TR, KVE-TR, PUR-HS-TR
	Special Polyurethane Cable for New Energy Vehicles	Designed for on-board and charging pile scenarios of new energy vehicles, with oil resistance, temperature resistance, wear resistance, high flame retardant, low smoke zero halogen, suitable for on-board high-voltage wiring harnesses, charging pile cables and other scenarios	PUR-EV, YVP-EV, KVP-EV, WDZ-PUR-EV
	Special Polyurethane Cable for Coal Mine	Designed for underground coal mine scenarios, with high flame retardant, explosion-proof, high wear resistance, high flexibility, impact resistance, suitable for mining equipment, conveyors, underground control equipment and other scenarios	MYP, MYP-TR, MKVVP, PUR-KS
	Special Polyurethane Cable for Ship and Marine	Designed for ship and offshore platform scenarios, with seawater corrosion resistance, oil resistance, waterproofing, microbial resistance, weather resistance, suitable for ship equipment, offshore platforms, underwater equipment and other scenarios	PUR-MAR, YVP-MAR, KVP-MAR, PUR-SUB
	Special Polyurethane Cable for Chemical and Oilfield	Designed for chemical and oilfield scenarios, with oil resistance, acid and alkali resistance, corrosion resistance, high wear resistance, impact resistance, suitable for chemical workshops, oilfield drilling, oil refining equipment and other scenarios	PUR-FS, YVP-FS, KVP-FS, PUR-HF

Maintenance Level	Maintenance Items	Execution Cycle	Operation Standard	Abnormal Handling Method
Special Protection During Construction Phase (Core Pre-maintenance)	Cable Incoming Acceptance	When the cable enters the site	1. Check the model specification, material, certification certificate and test report of the cable to confirm that it is consistent with the model selection requirements, with focus on checking the wear and tear resistance, oil and corrosion resistance, bending life test report; 2. Check the appearance of the cable, the sheath is free of damage, deformation, aging, bulging, the insulation layer is intact, and there is no trace of moisture, water ingress or frost cracking; 3. Test the insulation resistance of the cable with a megohmmeter, the insulation resistance is ≥10MΩ·km, and there is no short circuit or open circuit; 4. For cables used in high dynamic drag chain scenarios, the special test data of bending life and tear strength must be checked to ensure they meet the standards.	1. If the cable model specification is inconsistent, the material does not match, without certification or core performance test report, it is strictly prohibited to enter the site for use, and must be returned and exchanged immediately; 2. If the cable sheath is damaged, the insulation layer is damaged, moisture/water ingress or frost cracking is found, it is strictly prohibited to use, and must be replaced immediately; 3. If the insulation resistance is not up to standard, short circuit or open circuit is found, it is strictly prohibited to use, and must be replaced immediately.
	Protection During Construction	Throughout the construction period	1. Before cable laying, check that the drag chain, trench, pipeline and cable tray of the laying path are free of sharp objects and burrs to avoid the cable being scratched or punctured during laying; 2. During cable laying, it is strictly prohibited to bend, twist or drag the cable with an excessive small bending radius, and it is strictly prohibited to roll or step on the cable, especially for drag chain and high flexibility cables, to avoid damage to the insulation layer and conductor core breakage; 3. When laying drag chain cables, it must be ensured that the cables are not twisted, tension-free and firmly fixed in the drag chain to avoid dragging and friction during operation; 4. After the laying is completed, do a good job of waterproof plug and sealing treatment in time to avoid moisture and water ingress at the cable ends, and make identification marks for later operation and maintenance; 5. For construction in low temperature environment, thermal insulation protection of the cable must be done well to avoid the cable being frozen and brittle during construction.	1. If the cable sheath is damaged or the insulation layer is damaged during laying, stop the construction immediately, replace the damaged cable, and it is strictly prohibited to continue to use after repair; 2. If the cable is bent or twisted with an excessive small bending radius, re-lay the cable in a standardized manner immediately, and test the insulation performance and conductor integrity to ensure no damage; 3. If moisture, water ingress or frost damage is found at the cable ends, dry and seal them immediately, test the insulation resistance, and replace them immediately if unqualified.
Daily Inspection (Operation Period)	Appearance and Operating Status Inspection	1. High dynamic drag chain/robot equipment: before/after each shift operation; 2. Fixed laying/conventional scenarios: once a week; 3. Mine/marine/outdoor harsh scenarios: once a day	1. Check the cable sheath for damage, aging, deformation, corrosion, bulging, wear, the insulation layer is intact, and there is no trace of water ingress, moisture or icing; 2. Check the cable joints, terminals and connectors for heating, sparking, looseness, oxidation, leakage, and the seal is intact without damage; 3. Check the laying status of the cable, no looseness, falling, excessive bending, dragging, winding, twisting, no risk of being rolled by equipment or vehicles, no snow or ice coverage; 4. Check the operating environment of the cable, no acid and alkali corrosion, oil stain, high temperature heat source, flammable and explosive media, no potential safety hazards, and the protective measures for outdoor/marine scenarios are intact; 5. For drag chain cables, focus on checking whether the drag chain runs smoothly, and the cables are free of jamming, friction and tension.	1. If slight damage, aging, wear or corrosion of the sheath is found, mark it immediately, and arrange for professional personnel to repair it after power off, and do a good job of sealing protection; 2. If exposed insulation layer, joint heating and sparking, or serious cable deformation/twisting are found, cut off the power and stop the machine immediately, continue to use

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Polyurethane Cable

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Polyurethane Cable

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Product Introduction

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Installation and Maintenance Precautions

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