Conductor Material: The cable uses Aluminium Conductors. Aluminium as a conductor material has many advantages. Aluminium has a low density, which makes the overall weight of the cable relatively light, and this can save a lot of manpower and material costs during transportation and laying. At the same time, although the conductivity of aluminium is slightly inferior to that of copper, it can fully meet the general power transmission needs in underground power transmission scenarios. Moreover, the cost of aluminium is relatively low, which can reduce the overall cost on the premise of ensuring performance.

Insulation Layer Material: The cable uses XLPE (cross - linked polyethylene) as the insulation layer. XLPE has excellent electrical resistance, which can effectively prevent current leakage and ensure the safety of power transmission. It also has excellent aging resistance. In complex underground environments such as humidity, it can maintain stable performance for a long time and prolong the service life of the cable. In addition, XLPE also has good mechanical strength and can resist certain external force extrusion that may be encountered in the underground environment to protect the internal conductor.

Sheath Material: The outer layer of the cable is wrapped with a PVC Sheath. PVC material has good wear resistance, which can resist the friction of underground soil during cable laying and long - term use and reduce the risk of sheath damage. At the same time, the PVC sheath has strong protective performance, which can further block underground moisture, corrosive substances, etc. from entering the inside of the cable and provide double protection for the cable.

Style Design: The overall structure of this cable is cylindrical, which can more easily pass through preset pipes or trenches during underground laying. The 4 core wires are arranged in order inside, and the outer layer is wrapped with an XLPE insulation layer and a PVC sheath in turn, forming a compact and regular whole, which is suitable for long - term underground laying scenarios.

Conductor Preparation: First, the aluminium raw materials are strictly screened to remove impurities to ensure that the purity of aluminium meets the production requirements. Then, the aluminium material is drawn into Aluminium Wires with the required diameter through a wire drawing process. Then, multiple aluminium wires are stranded together according to a certain process to form the conductor of the 4 - Core Cable. During the stranding process, the stranding force and angle should be accurately controlled to ensure that the conductor structure is tight and the conductivity is uniform.

XLPE Insulation Layer Extrusion: When wrapping the XLPE insulation layer on the outer layer of the conductor, the extrusion moulding process is adopted. First, the XLPE material is heated to a molten state, and then the molten XLPE is evenly wrapped on the surface of the conductor through an extruder. In this process, parameters such as extrusion temperature and speed should be strictly controlled to ensure that the insulation layer has a uniform thickness, a smooth surface, and is closely combined with the conductor without defects such as bubbles and cracks, so as to ensure the electrical resistance and mechanical strength of the insulation layer.

Cabling Treatment: The 4 core wires wrapped with the insulation layer are subjected to cabling treatment. According to the designed arrangement, the 4 core wires are stranded in order, and some auxiliary materials are filled between the core wires to make the overall structure of the cable more stable. The filling materials can also play a buffering role to reduce friction and extrusion between core wires.

PVC Sheath Extrusion: After cabling, a PVC sheath is extruded on the outer layer. The extrusion process is also adopted. After the PVC material is heated and melted, it is evenly wrapped on the outer layer of the cabled cable through an extruder. Relevant process parameters are controlled to ensure that the sheath has a uniform thickness and is closely attached to the internal structure, so as to enhance the wear resistance and protective performance of the cable.

Quality Inspection: Quality inspection during the production process is crucial. After the conductor is prepared, its conductivity, diameter and other parameters are tested; after the XLPE insulation layer is extruded, the electrical resistance, thickness and other properties of the insulation layer are tested; after cabling and PVC sheath extrusion, the overall structure of the cable and the wear resistance of the sheath are tested. Only the cables that pass all inspections can enter subsequent links such as packaging.

Selection of Transportation Methods: According to the quantity, specification and transportation distance of the cables, select an appropriate transportation method. For short - distance and small - batch transportation, truck transportation can be adopted; for long - distance and large - batch transportation, railway transportation is a better choice. Railway transportation has high stability and can reduce the impact of bumps during transportation on the cables.

Transportation Precautions: During transportation, the reels with cables should be placed upright. It is strictly forbidden to place them flat or stack them to prevent the reels from being deformed by pressure and damaging the cables. Transport vehicles should drive smoothly and avoid operations such as sudden braking and sharp turns to reduce the shaking and collision of cable reels.

Loading and Unloading Specifications: When loading and unloading cables, professional loading and unloading equipment such as forklifts and cranes should be used. During loading and unloading, handle with care and avoid rough operation to prevent the reels from falling or colliding. During loading, unloading and transportation, avoid severe external impact on the cables.

Preparation before Delivery: After receiving the customer's order, warehouse managers will accurately retrieve the 4 - core aluminium earth cables (underground XLPE PVC type) of the corresponding specification and length according to the order information. Recheck the packaging, marking, etc. of the cables to ensure that they are consistent with the order requirements. At the same time, prepare relevant delivery documents such as delivery notes and product quality certificates, and the information in the documents must be accurate and correct.

Delivery Process: Hand over the checked cables and delivery documents to the transportation department. The transportation department arranges appropriate transport vehicles and drivers. Before departure, the driver will conduct a comprehensive inspection of the transport vehicle to ensure that the vehicle is in good condition. When delivering the goods, the delivery information will be timely informed to the customer, including the transport vehicle information, estimated arrival time, etc., to facilitate the customer to make receiving preparations.

Handling of Special Situations: If there are special situations that may affect transportation such as bad weather, the customer will be timely communicated with, the situation will be explained, and the delivery or arrival time will be negotiated and adjusted. For urgent orders, priority will be given to arranging delivery to ensure that the cables are delivered to the customer in the shortest possible time.

Sample Provision: In order to enable customers to better understand the quality and performance of the 4 - core aluminium earth cable (underground XLPE PVC type), the company provides sample services. Customers can apply for cable samples of the required specification according to their own needs. The material, process, etc. of the samples are consistent with those of mass - produced products and can truly reflect the actual situation of the products.

Sample Application Process: Customers can apply for samples through the company's official website, telephone, email and other methods. When applying, they need to provide information such as the specification, quantity of the required samples, their own contact information and location. After receiving the application, the company will review it within 1 - 2 working days. After the review is passed, it will contact the customer in time to confirm matters related to the samples.

Sample Fees and Delivery: Sample fees are charged according to the specification and quantity of the samples. Generally, the sample fees can be deducted from the corresponding payment when the customer makes bulk purchases later. The delivery fee of the samples is borne by the customer. The company will choose a reputable express company to deliver the samples and timely inform the customer of the express waybill number to facilitate the customer to query the logistics information of the samples.

Sample Feedback Collection: After the customer receives the samples, the company will take the initiative to contact the customer to learn about the customer's use experience and opinions on the samples. If the customer has questions or suggestions about the samples, the company will arrange professional personnel to answer and handle them to provide a reference for the customer's purchase decision.

Installation Guidance: After receiving the 4 - core aluminium earth cable (underground XLPE PVC type), if the customer encounters problems during the installation process, they can contact the company's after - sales service department at any time. The company will arrange professional technical personnel to provide installation guidance through telephone, video and other methods, and inform the precautions during installation, such as the bending radius requirements during laying and the operation specifications during connection, to ensure that the customer installs the cable correctly.

Quality Assurance: The company provides quality assurance services for this cable. If the cable fails due to its own quality problems within the product warranty period, after verification, the company will provide the customer with a free replacement of a new cable or maintenance services. The warranty period is calculated from the date when the customer receives the cable, and the specific duration will be clearly marked in the product manual.

Fault Handling: If the cable fails during use, the customer can call the after - sales service hotline to report the fault. After receiving the fault report, the company will arrange technical personnel to understand the fault situation in a timely manner. If the fault is relatively simple, it can guide the customer to solve it by themselves through telephone; if the fault is complex, it will arrange technical personnel to carry out on - site maintenance to restore the normal use of the cable as soon as possible.

Regular Return Visits: The company will conduct regular return visits to customers who have purchased the cable to learn about the use of the cable, customer satisfaction, etc. Through return visits, customers' opinions and suggestions are collected to continuously improve product and service quality. At the same time, some knowledge about cable maintenance will also be provided to customers to prolong the service life of the cable.

Complaint Handling: If a customer has a complaint about the product or service, the company will respond within 24 hours, carefully investigate the cause of the complaint, and timely feed back the handling results to the customer. Ensure that customers' reasonable demands are properly resolved and improve customer satisfaction.