Detailed Introduction to 4X120, 4X150, 4X185 Fireproof Security Power Cables
I. From the Perspective of the Product Itself
(I) Specification Parameters
The 4X120, 4X150, and 4X185 fireproof security
Power Cables have rigorous and comprehensive settings in terms of specification parameters to ensure their stable and reliable performance in power transmission for key equipment such as generators.
In terms of rated voltage, the cable is suitable for medium and low-voltage power transmission with a rated voltage of 0.6/1kV, which can meet the power transmission needs between generators and distribution panels, emergency busbars, ensuring stable and efficient power transmission.
The conductor specifications are 4X120mm², 4X150mm², and 4X185mm² respectively. The conductor is made of high-purity aluminum material with a purity of ≥99.7%, manufactured through a multi-strand compact stranding process. There are differences in the DC resistance of the single-core conductors of the three specifications at 20℃: 4X120mm² ≤0.158Ω/km, 4X150mm² ≤0.124Ω/km, and 4X185mm² ≤0.0991Ω/km, all lower than the industry standard, which can effectively reduce energy loss during power transmission and improve power transmission efficiency.
The insulation layer is made of flame-retardant XLPE (cross-linked polyethylene) material. After special fireproof treatment, its temperature resistance level reaches 90℃, allowing it to operate stably for a long time in normal working environments. In case of a short circuit (within 5 seconds), it can withstand a high temperature of 250℃, ensuring insulation reliability under extreme working conditions. Its volume resistivity is ≥10¹⁴Ω·cm, and the dielectric loss tangent is ≤0.002 (at 90℃), with excellent insulation performance that can effectively isolate the risk of electric leakage. At the same time, the insulation layer has passed the GB/T 19666-2019 fire test and can maintain circuit integrity within 3 hours of direct burning by an 800℃ flame.
The inner sheath is made of low-smoke halogen-free flame-retardant polyolefin material with an oxygen index of ≥32%. When burning, it has low smoke density (light transmittance ≥60%) and no toxic gas release. This material not only has good flame-retardant performance but also can reduce harm to humans and equipment in case of fire.
The outer armor is a double-layer galvanized steel strip, and the armor thickness increases with the specification: 0.3mm for 4X120mm² and 0.5mm for 4X185mm², with a tensile strength of ≥300MPa. It can withstand vibration impact and external mechanical extrusion during generator operation, providing solid protection for the internal structure of the cable.
The current-carrying capacity is adapted to the power demand of the generator. The 4X120mm² cable has a current-carrying capacity of about 240A when laid in air, the 4X150mm² is about 290A, and the 4X185mm² reaches 350A. The current-carrying capacities of different specifications meet the power transmission needs of generators with different powers. Its minimum bending radius is 12 times the cable outer diameter (static). The outer diameter of the 4X120mm² cable is about 65mm, with a static bending radius of 780mm; the outer diameter of the 4X150mm² cable is about 72mm, with a static bending radius of 864mm; the outer diameter of the 4X185mm² cable is about 80mm, with a static bending radius of 960mm, which is convenient for flexible laying in complex pipelines around the generator.
(II) Characteristic Uses
The 4X120, 4X150, and 4X185 fireproof security power cables have distinct uses in multiple fields due to their excellent performance.
In the hospital field, this cable plays a crucial role. The generator in a hospital is the core to ensure the normal operation of key equipment in emergency situations such as power outages, such as medical equipment in operating rooms and life support systems in intensive care units. The 4X120mm² cable is suitable for small and medium-sized generators and can connect the
Emergency Power Supply lines of these key equipment to ensure stable power transmission in emergencies. In case of emergencies such as fires, its fireproof and low-smoke halogen-free properties can ensure continuous power supply, while reducing the harm of smoke and toxic gases to patients and medical staff.
Data centers have extremely high requirements for the reliability and safety of power supply. Once a power outage or fire occurs, it will cause huge economic losses. The 4X150mm² and 4X185mm² cables can be matched with generators of different powers respectively, and are used to connect the generator to the power distribution system of the data center. In case of fire, the cable can maintain circuit integrity, ensuring the normal operation of servers and other equipment, and buying time for data backup and system recovery.
In high-rise buildings, the normal operation of elevators, fire pumps, emergency lighting and other equipment in emergency situations is directly related to the safety of people's lives. The 4X120mm² and 4X150mm² cables can be selected according to the building scale and generator power to connect the generator to the power supply lines of these emergency equipment. Its good bending performance allows it to be flexibly laid in the complex pipelines of high-rise buildings, and its fireproof performance can ensure continuous power supply in case of fire, supporting personnel evacuation and rescue work.
In the industrial field, some key production lines in large factories need generators to provide emergency power in case of power outages to avoid losses caused by production interruption. The 4X185mm² cable is suitable for large generators and can meet the power demand of high-power equipment on the production line. Its outer armor can withstand mechanical impact and extrusion in the industrial environment, ensuring the stable operation of the cable in harsh environments.
In addition, in crowded places such as large stadiums and theaters, this cable is also widely used to connect generators and emergency power supply systems, ensuring the normal operation of emergency lighting, broadcasting systems and other equipment in emergencies, and maintaining on-site order and personal safety.
(III) Material and Style
Material
The conductor is made of high-purity aluminum material with a purity of ≥99.7%. High-purity aluminum has good electrical conductivity and can meet the needs of power transmission. Compared with
Copper Conductors, the weight of
Aluminum Conductors is only 1/3 of that of
Copper Conductors of the same specification, which greatly reduces the burden of installation and transportation, and is especially suitable for wiring in space-constrained areas such as generator rooms. At the same time, aluminum material has certain ductility and toughness. After being processed by the multi-strand compact stranding process, it can balance conductivity and
Flexibility, facilitating the bending and installation of the cable during laying.
The insulation layer is made of flame-retardant XLPE (cross-linked polyethylene) material. After special fireproof treatment and cross-linking process, this material has excellent electrical performance, mechanical performance and fireproof performance. It has a high temperature resistance level, can maintain stable insulation performance in high-temperature environments, and has passed relevant fire tests, being able to maintain circuit integrity in fires. XLPE material has good chemical stability, is not easy to age, can maintain good insulation effect for a long time, and prolong the service life of the cable.
The inner sheath is made of low-smoke halogen-free flame-retardant polyolefin material, which has good flame-retardant performance with an oxygen index of ≥32%. It does not release toxic gases when burning, has low smoke density and a light transmittance of ≥60%, which can reduce harm to humans and the environment in case of fire. At the same time, it also has certain chemical corrosion resistance and mechanical strength, which can protect the internal structure of the cable from external factors.
The outer armor is a double-layer galvanized steel strip. The galvanizing treatment enhances the corrosion resistance of the steel strip and prolongs the service life of the armor. The steel strip has a high tensile strength of ≥300MPa, which can effectively withstand vibration impact and external mechanical extrusion during generator operation, providing solid mechanical protection for the cable and preventing damage to the cable during installation and use.
The semi-conductive shielding layer is made of semi-conductive material, whose resistivity is between that of the conductor and the insulator. This shielding layer can evenly distribute the electric field, avoid excessive local electric field strength inside the cable, prevent the insulation layer from aging due to partial discharge, and improve the operational safety and reliability of the cable.
Style
The cable has a 4-core structure, which is round overall with a compact structure. The 4-core design can meet the needs of three-phase four-wire power transmission, used for the transmission of phase lines and neutral lines respectively, ensuring the stability and safety of power transmission.
The color design of the cable has certain identification. The inner sheath is usually black or gray, which can absorb heat, reduce the impact of the external environment on the cable, and is also convenient for identification in complex pipelines. The galvanized steel strip of the outer armor is silvery white with a certain luster, which not only plays a protective role but also can reflect heat to a certain extent.
In terms of appearance, the surface of the cable is smooth and flat, with no obvious bulges, depressions or cracks. The steel strip of the armor layer is tightly and evenly wound, with no looseness or edge warping. The outer layer of the cable is printed with clear marks, including cable model, specification, rated voltage, manufacturer, production date, certification mark and other information, which is convenient for users to identify and trace the product.
When the cable is packaged in coils, the coil diameter varies according to specifications. The coil diameter of the 4X120mm² cable is about 1.2 meters, the 4X150mm² is about 1.4 meters, and the 4X185mm² is about 1.6 meters. This coil diameter design is not only convenient for storage and transportation but also easy to unfold during laying.
(IV) Production Process
The production process of 4X120, 4X150, and 4X185 fireproof security power cables is complex and rigorous. Each link from raw material processing to finished product inspection is strictly controlled to ensure product quality.
Conductor manufacturing is the primary link in production. First, high-purity aluminum ingots are smelted to remove impurities, so that the purity of aluminum reaches ≥99.7%. During the smelting process, it is necessary to accurately control the temperature and time to ensure sufficient precipitation of impurities. The smelted aluminum liquid is made into aluminum rods through a continuous casting and rolling process, and the diameter of the aluminum rods is determined according to the final conductor specification. Then, the aluminum rod is drawn into
Aluminum Wires of the required diameter through a wire drawing machine. During the wire drawing process, it is necessary to control the wire drawing speed and die precision to ensure that the diameter of the
Aluminum Wire is uniform, the surface is smooth, and there are no scratches or burrs. After that, multiple aluminum wires are compactly stranded according to a certain process to make a single-core conductor. The compact stranding process can improve the filling coefficient of the conductor, reduce the outer diameter of the conductor, and enhance the flexibility and mechanical strength of the conductor.
Insulation layer extrusion is one of the key processes. The single-core conductor is fed into the extruder, and at the same time, the flame-retardant XLPE material is added into the hopper of the extruder. The XLPE material is heated, melted and plasticized in the extruder, and then evenly wrapped around the outside of the conductor through an extrusion die to form an insulation layer. During the extrusion process, it is necessary to strictly control the extrusion temperature, extrusion speed and die pressure to ensure that the thickness of the insulation layer is uniform, closely combined with the conductor, and free of bubbles, material shortages, eccentricity and other defects. The extruded
Insulated Core needs to undergo cross-linking treatment, usually by means of warm water cross-linking or steam cross-linking, so that the XLPE molecules form a three-dimensional network structure, thereby improving its mechanical properties, temperature resistance and fire resistance. The cross-linked insulated core should be cooled and shaped by a cooling system.
The application of the semi-conductive shielding layer is carried out after the insulation layer is processed. The semi-conductive material is applied to the surface of the insulation layer by extrusion or lapping to form a shielding layer. The extrusion method is to heat and melt the semi-conductive material and extrude it to the surface of the insulation layer through a die, which is closely combined with the insulation layer; the lapping method is to lap the semi-conductive tape on the surface of the insulation layer with a certain overlap rate. The thickness of the shielding layer should be uniform to ensure that it can effectively and evenly distribute the electric field.
The inner sheath extrusion is carried out after the shielding layer is applied. The core with the shielding layer is fed into the inner sheath extruder, and the low-smoke halogen-free flame-retardant polyolefin material is heated and melted, then evenly wrapped around the outside of the shielding layer through an extrusion die to form the inner sheath. During the extrusion process, various parameters should be controlled to ensure that the thickness of the inner sheath is uniform, the surface is smooth, closely combined with the shielding layer, and free of bubbles, cracks and other defects.
The 4-core cabling process is to strand
4 Cores with inner sheaths according to a certain stranding method and pitch to form a cable core. During the cabling process, it is necessary to ensure that the
4 Cores are evenly positioned and tightly stranded, and at the same time, some inert materials, such as polypropylene rope, are filled in the middle of the cable core to ensure the roundness and stability of the cable core and reduce deformation during subsequent processing and use.
The outer armor lapping is the last major process. The double-layer galvanized steel strip is lapped around the cabled core at a certain lapping angle and tension through an armoring machine to form the outer armor. During the lapping process, it is necessary to ensure that the steel strip is lapped tightly and flatly, without loosening, edge warping, breaking and other phenomena. The thickness of the armor should meet the design requirements to ensure that it can provide sufficient mechanical protection.
During the production process, multiple quality inspections are required. The diameter, DC resistance, tensile strength of the conductor are tested; the thickness, insulation resistance, voltage resistance performance, fire resistance performance of the insulation layer are tested; the resistance of the shielding layer, the bonding force with the insulation layer are inspected; the thickness, tensile strength, elongation at break, flame retardant performance of the inner sheath are tested; the thickness and lapping quality of the armor are checked. The finished cable also needs to undergo overall electrical performance tests, mechanical performance tests and environmental performance tests to ensure that all indicators meet relevant standards and design requirements.
The production environment also has an important impact on product quality. The workshop needs to be kept clean and dry, and the temperature and humidity should be controlled within appropriate ranges to avoid dust, impurities and other factors affecting product performance. Production equipment is regularly maintained and calibrated to ensure its operating accuracy and stability, and improve production efficiency and the consistency of product quality.
II. From the Perspective of General Product Information
(I) Packaging
The packaging design of 4X120, 4X150, and 4X185 fireproof security power cables fully considers the product protection, transportation and storage needs to ensure that the cable is not damaged during the entire circulation process.
The cable is packaged in coils. The length of each coil varies according to specifications, usually 50 meters, 100 meters or 200 meters. Packaging materials mainly include wooden cable reels and plastic films. The wooden cable reel is made of high-quality hardwood, which has been dried and anti-corrosive treated, with high strength and stability, and can bear the weight of the cable and the pressure during transportation and storage. Both sides of the cable reel are provided with metal flanges, and the flanges are evenly distributed with a number of holes, which is convenient for handling and loading/unloading with forklifts, cranes and other equipment.
The cable is neatly wound on the wooden cable reel, and appropriate tension is maintained during winding to avoid loosening of the cable or damage caused by mutual friction. The outer layer of the cable is wrapped with a thick layer of plastic film, which has good moisture-proof, dust-proof and anti-corrosion performance, and can effectively isolate the erosion of the cable by external moisture, dust, oil and chemical substances. The plastic film should be closely attached to the surface of the cable and stretched during winding to ensure that there is no gap between it and the cable, forming a sealed protective barrier.
A clear label is fixed on the side or flange of the cable reel. The label details the cable's model, specification, length, rated voltage, manufacturer, production date, production batch number, certification mark and other information. The label is made of waterproof and wear-resistant materials to ensure that the information is clear and legible during transportation and storage, which is convenient for users to identify, count and trace the product.
For exported products or products transported over long distances, the outer part of the wooden cable reel will be reinforced with iron sheets or wooden boxes to enhance the impact resistance and pressure resistance of the packaging and prevent the cable reel from being damaged due to collision and extrusion during transportation. At the same time, the packaging will be printed with internationally accepted warning signs, such as "Do not invert", "Moisture-proof", "Handle with care", "Stacking limit", etc., to remind transport and handling personnel to pay attention to operating specifications.
(II) Transportation
The transportation of 4X120, 4X150, and 4X185 fireproof security power cables needs
to select appropriate transportation methods based on factors such as transportation distance, quantity, destination, and traffic conditions, and take corresponding protective measures to ensure that the cables are delivered to the destination safely and on time.
Road transportation is a commonly used mode, suitable for medium and short-distance transportation. The transport vehicles are usually large trucks or semi-trailers, with flat, clean compartments free of sharp objects. Before loading, the integrity of the cable reels and the packaging of the cables must be checked to ensure no damage. When loading, forklifts or cranes are used to hoist the cable reels stably into the compartment. A certain gap should be left between the cable reels to avoid mutual collision. For multiple cable reels, they should be arranged neatly and firmly fixed to the compartment with steel wire ropes or strapping belts to prevent movement or tipping due to vehicle bumps, sudden braking, etc., during transportation. During transportation, drivers must strictly abide by traffic rules, control the speed, avoid sudden acceleration, sudden braking, and sharp turns to reduce the impact force on the cables. At the same time, attention should be paid to avoiding severe weather such as heavy rain, high temperature, extreme cold, and strong winds to prevent the cables from being affected by extreme environments.
Railway transportation is suitable for long-distance and large-volume cable transportation, with the advantages of large transportation capacity, good stability, and relatively low cost. When transporting by railway, the cable reels are loaded into the designated positions of railway freight cars and fixed firmly with special fixing devices to ensure no movement during transportation. For valuable or vulnerable cables, boxcars can be used for transportation to prevent erosion by natural factors such as wind, sun, and rain. Railway departments will track and monitor the goods throughout the process to ensure transportation safety.
Waterway transportation is mainly used for exported products or long-distance cross-water transportation. The cable reels are loaded into the cabins or decks of cargo ships through the hoisting equipment at the wharf. The cable reels loaded in the cabins should be stacked reasonably, avoiding excessive stacking to prevent the bottom cable reels from being crushed. The cable reels loaded on the deck need to be fixed more firmly and covered with waterproof cloth to prevent seawater erosion and rain soaking. During transportation, attention should be paid to weather changes and ship navigation conditions, and timely countermeasures should be taken to ensure the safety of the cables.
Regardless of the transportation mode, appropriate loading and unloading equipment such as forklifts and cranes must be used during loading and unloading. Manual rough loading and unloading is strictly prohibited to avoid damage to the cable reels or scratches and breaks on the cable sheaths. During loading and unloading, it is necessary to lift and place gently, keep the cable reels stable, and avoid severe impacts. Transport personnel should be familiar with the characteristics and transportation requirements of the cables, and strictly operate in accordance with the operating procedures to ensure the safety of the cables during transportation.
(III) Shipment
The company has established a sound shipment process to ensure that 4X120, 4X150, and 4X185 fireproof security power cables can be sent to customers in a timely and accurate manner.
After a customer places an order, the sales department will enter the order information into the system immediately and transmit it to the warehouse department. The order information includes customer name, contact information, delivery address, cable model, specification, quantity, delivery date, transportation method, etc. After receiving the order, warehouse managers first review the order information to confirm its accuracy and completeness. If any errors or omissions are found, they will communicate and coordinate with the sales department in a timely manner, and proceed with subsequent operations only after confirmation.
After the review is passed, warehouse managers prepare the goods according to the order requirements. During the preparation process, in accordance with the first-in, first-out principle, the corresponding models, specifications, and quantities of cables are retrieved from the warehouse. At the same time, the packaging, labels, and appearance of the cables are carefully inspected to ensure that the quality of the cables is intact and the information is consistent with the order.
After the goods are prepared, the warehouse department will generate a delivery note, which includes details such as the order number, customer information, cable information, quantity, and weight. The delivery note is checked and signed by both the warehouse manager and the delivery personnel to confirm the handover of the goods.
Before shipment, the logistics department will arrange appropriate transportation vehicles and personnel according to the transportation method specified in the order. For road transportation, the condition of the vehicles and the loading and unloading tools is inspected to ensure they are in good working condition. For railway or waterway transportation, the transportation documents are sorted out and submitted to the relevant departments in a timely manner to ensure smooth transportation.
During the shipment process, the logistics department tracks the transportation status of the goods in real time. For long-distance transportation, regular communication with the driver or transportation agency is maintained to grasp the location and condition of the goods. If any abnormal situation occurs, such as vehicle breakdown, traffic jam, or bad weather affecting transportation, timely measures are taken to deal with it and the customer is informed of the situation.
After the goods arrive at the destination, the customer is notified to receive the goods in a timely manner. The customer checks the goods according to the delivery note, including the appearance, packaging, quantity, and specifications of the cables. If there is any problem with the goods, the customer can put forward objections in a timely manner, and the company will send personnel to handle it as soon as possible.
(IV) Samples
The company provides sample services for 4X120, 4X150, and 4X185 fireproof security power cables to help customers understand the performance and quality of the products before purchasing in large quantities.
Customers can apply for samples through the company's sales staff or official website. When applying, customers need to provide information such as the required cable model, specification, quantity, and their contact information and delivery address. The company will review the sample application, and after approval, arrange for the preparation and delivery of samples.
The samples provided are consistent with the batch products in terms of materials, production processes, and performance indicators, ensuring that customers can truly understand the product quality. The length of the samples is usually 1-5 meters, which is convenient for customers to conduct tests and inspections.
The company may charge a certain sample fee, which will be refunded to the customer after the customer places a formal order in a certain quantity. The transportation cost of the samples is usually borne by the customer, and the company can assist in arranging transportation.
After the samples are sent, the company will track the customer's receipt of the samples and follow up on the customer's feedback on the samples. If the customer has any questions or suggestions about the samples, the company's technical staff will provide professional answers and solutions.
(V) After-sales Service
The company attaches great importance to after-sales service and provides comprehensive after-sales support for 4X120, 4X150, and 4X185 fireproof security power cables to ensure customer satisfaction.
Quality Guarantee: The company provides a quality guarantee period for the cables, usually 12-24 months from the date of delivery. During the guarantee period, if the cable has quality problems due to manufacturing defects, the company will provide free replacement or repair services.
Technical Support: The company's technical team provides professional technical support to customers, including cable installation guidance, use maintenance, and fault diagnosis. Customers can consult technical questions through phone, email, or online platforms, and the technical team will respond in a timely manner and provide solutions.
Fault Handling: If the cable fails during use, the customer can report the fault to the company's after-sales department. The after-sales department will record the fault situation in detail and arrange for technical personnel to investigate and deal with it as soon as possible. If it is confirmed that the fault is caused by product quality, the company will handle it in accordance with the quality guarantee commitment.
Feedback and Improvement: The company collects customer feedback on products and services in a timely manner, and continuously improves product quality and service levels based on the feedback. Customers' suggestions and opinions are valued, and the company will reply and handle them in a timely manner.
Training Services: For large customers or customers with special needs, the company can provide on-site training services, including cable performance introduction, installation process, maintenance methods, etc., to help customers better use the products.
In summary, the company's after-sales service system is designed to solve customer problems in a timely and effective manner, ensure the normal use of the cables, and establish long-term and stable cooperative relationships with customers.
English
Español
Portugues
Pусский
Français
العربية
ไทย
Türk dili
Indonesia
Điện thoại
Thư