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Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
                        La Commission a procédé à une évaluation de l'efficacité de l'aide.Le groupe Xian XZH Electric Power Technology Co., Ltd. a fondé en 2013, situé à Xi'an, en Chine. qui est une équipe très expérimentée dédiée au développement d'instruments de mesure électriques,la gamme de produits couvre une large gamme d'appareils pour tester divers domaines électriques, tels que le système de localisation des défauts des câbles souterrains, le test du transformateur de puissance, le test AC/DC Hipot, le test de résistance à l'isolation, etc.Avec de riches expériences de mesure combinant innovation et technologie de pointe pour fournir la mesure électrique la plus fiable. La conception, la production et l'inspection sont effectuées selon les normes ISO 9001 et CE qui garantissent une cohérence des produits de haute qualité.XZH TEST maîtrise une variété de technologies ainsi qu'un service et un support étendus pour offrir la plus grande valeur à nos clients. Nous tenons sincèrement le principe de "qualité d'abord, les clients suprême, l'engagement d'honneur digne de confiance". Reste l'engagement R & D sur les équipements de détection de puissance électrique et l'automatisation de la puissance électrique,depuis sa fondation, la société continue à vivre à la croyance de: "Créer une marque de haute qualité, jetant image d'entreprise de première classe"."la meilleure qualité" comme concept de base de l'entreprise. Notre objectif est de fournir à nos clients des équipements de test et de mesure fiables, plus sûrs et plus faciles à utiliser, nous rendons la mesure plus facile! Xi'an Xu & Hui Electromechanical Technology Co., Ltd espère renforcer les relations avec les partenaires du monde entier,et les partenaires commerciaux chaleureusement accueillis pour visiter notre usine pour développer l'OEM & ODM coopération gagnant-gagnant. Notre équipe Scène d'usine La formation est un cours de base pour tous les membres et nous organiserons diverses formations pour nous aider à améliorer nos capacités et à trouver la beauté de la vie.Nous chérissons le temps que nous passons à étudier ensemble.. Les services Nous avons la capacité d'innover de nouveaux produits et technologies. Nous pouvons fournir des solutions de système complètes pour votre projet. Nous fournissons une formation pratique et théorique en ligne et hors ligne. Nous fournissons la réparation et l'étalonnage des instruments. Certification
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Popular Science Lesson: Main Electrical Performance Tests for Power Cables 2025-12-09 Since power cables are mainly composed of two parts—metallic conductors and insulators—the electrical performance tests for power cables revolve around these two aspects. Conductor Electrical Performance and Related Tests:* These mainly involve measuring the DC resistance of the conductor, checking the cable phase, and calculating the cable's current carrying capacity. Insulation Electrical Performance and Related Tests:This is the most important and complex type of test for power cables, including two main categories: inspection tests (non-destructive tests) and withstand voltage tests (destructive tests). Inspection tests refer to indirectly judging the insulation condition by measuring certain characteristics of the cable insulation at lower voltages. There are many methods, such as insulation resistance testing and dielectric loss tangent testing. These tests reveal, to a certain extent, the different natures and developmental stages of insulation defects. Withstand voltage tests, on the other hand, simulate various voltages that may occur during operation, applying equivalent or more severe voltages to the insulation to test its withstand capability. This type of test is the most effective, feasible, and irreplaceable. However, withstand voltage tests can only reveal insulation defects when they have developed to a relatively severe level, in the form of breakdown, and cannot clearly reveal the nature and root cause of the insulation. Withstand voltage tests typically take the form of DC withstand voltage tests, AC withstand voltage tests, impulse withstand voltage tests, and partial discharge tests under high voltage.
Science Popularization Mini-Lesson: Electrical Performance Testing of Power Cables 2025-12-06 To ensure safe power supply, power cables undergo a series of electrical performance tests before leaving the factory, after installation, and during use. Based on the purpose of the test, cable tests can be divided into five categories: type tests, sample tests, routine tests, acceptance tests, and preventive tests. (1) Type Test: This is a test conducted by the manufacturer before mass production of a new type of cable. This test compares the performance and quality of the new product with existing products, or directly demonstrates that the new product meets the performance requirements for actual operation.  It is generally only performed once, unless there are changes in materials, structure, or manufacturing process. (2) Sample Test: This is a test conducted by the manufacturer on a certain proportion of cables sampled from a batch.(3) Routine Test: This is a test conducted by the manufacturer on all finished cables to check for problems in the mass production process and to ensure the quality stability of the product.(4) Acceptance Test: This refers to the test performed on cables after new installation and before commissioning, sometimes also including tests after major or minor repairs. (5) Preventive Test: This usually refers to periodic maintenance tests performed on cables during operation to promptly detect potential problems and changes in cable performance, preventing accidents or damage to the cables.
Popular Science Lesson: Thermal Shrinkable Cable Joints 2025-12-04 Heat-shrinkable cable joints are cable joints manufactured using a complete set of heat-shrinkable cable accessories. These accessories are made from rubber and plastic materials using special processes and include heat-shrinkable insulating tubes, heat-shrinkable semi-conductive tubes, heat-shrinkable oil-resistant tubes, heat-shrinkable sheathing tubes, heat-shrinkable branch tubes, and heat-shrinkable rain skirts. Due to their relatively simple manufacturing process, they are widely used for the termination and intermediate joints of various rubber and plastic cables with different voltage ratings. Their internal structure is similar to that of wrapped cable joints. Schematic diagram of 10kV XPEL cable heat-shrinkable single-phase intermediate joint and outdoor terminal structure (a) Single-phase intermediate joint structure diagram; (b) Outdoor terminal structure diagram1—Conductor; 2—Inner semiconductive layer; 3—XLPE insulation layer; 4—Outer semiconductive layer; 5—Copper shielding tape; 6—Connecting tube; 7—Stress control tube; 8—Inner insulation tube; 9—Outer insulation tube; 10—Shielding tube; 11—Semiconductive tape; 12—Filling adhesive; 13—Stress relief adhesive; 14—Sealant; 15—Copper shielding mesh; 16—Copper braided tape; 17—Binding wire; 18—Terminal; 19—Cable core wire; 20—Sealing tube; 21—Cable insulation layer; 22—Outdoor heat-shrinkable tubing; 23—Single-hole rain skirt; 24—Stress tube; 25—Cable semiconductive layer; 26—Cable copper shielding layer; 27—Three-hole rain skirt; 28—Three-way branch sleeve; 29—Grounding wire; 30—Cable clamp Schematic diagram of 35kV single-core extruded heat-shrinkable intermediate joint and terminal structure (a) 35kV single-core extruded heat-shrinkable intermediate joint structure(b) 35kV single-core extruded heat-shrinkable terminal structure 1, 20—Cable sheath; 2, 19—Copper shield; 3—Stress relief adhesive; 4—Semi-conductive layer; 5—Stress control tube; 6—Core insulation; 7—Semi-conductive tape; 8—Connecting tube; 9—J30 self-adhesive tape; 10—Inner insulation tube; 11—Outer insulation tube; 12—Semi-conductive tube; 13—Copper shielding mesh; 14—Sheath tube; 15—Terminal; 16—Sealant; 17—Sealing tube; 18—Insulation tube; 21—Ground wire Cold shrink cable joints are cable joints or terminations made with a set of cold shrink cable accessories. They are typically made of silicone rubber or ethylene/propylene rubber, allowing for natural shrinkage. Normally, a spiral plastic support strip is used to maintain the inner diameter and shape of the accessory before use. During field installation, simply slip the accessory onto the cable joint (terminal or intermediate point), pull out the plastic support strip, and the rubber accessory will tightly shrink onto the corresponding part of the cable. The entire process requires no heating, simplifying the installation process. Currently, cold shrink accessories are mainly used on cables with voltage levels of 35kV and below, as shown in the figure. Schematic diagram of cold-shrink cable joint structure (a) Material of cold-shrink cable joint; (b) Cross-sectional view of single-core joint; (c) Cross-sectional view of three-core joint;1—Cable; 2—Cable insulation layer; 3—Stress pile; 4—Shielding tube; 5—Copper connecting tube; 6—Supporting liner; 7—Steel armor; 8—Inner sheath of cable; 9—Constant force spring; 10, 11—Outer semiconductive layer; 12—Core insulation layer; 13—Inner semiconductive layer; 14—Conductor connecting hardware; 15—Copper shielding mesh; 16—Grounding wire; 17, 18—Special armored waterproof tape; 19—Armor tape Schematic diagram of cold shrink cable termination structure (a) Cold shrink termination material(b) Cross-sectional view of three-core termination 1—Cold shrink cable termination; 2—Cold shrink three-finger sleeve; 3—Cold shrink sheath; 4—Cold shrink sealing tube; 5—Conductor connection hardware; 6—Elastic sealing tape; 7—Insulation layer; 8—High dielectric constant electrical stress control stack; 9—Semiconductive layer; 10—Phase color band; 11, 12—Copper shielding layer; 13—Filling adhesive; 14, 15—Constant force spring; 16—Grounding wire
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Construction B8-01, phase I, ville industrielle de Ronghao, n° 2098, rue Weiyang 9, district de Gaoling, Xi'an, Chine
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