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Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
                        Xi'an Xu&Hui Electromechanical Technology Co., Ltd. /Xian XZH Electric Power Technology Co., Ltd. ha fondato nel 2013, con sede a Xi'an, in Cina. che è un team altamente esperto dedicato allo sviluppo di strumenti di misura elettrica,la linea di prodotti copre una vasta gamma di dispositivi per la prova di varie aree elettriche, come il sistema di localizzazione dei guasti dei cavi sotterranei, la prova del trasformatore di potenza, la prova di AC/DC Hipot, la prova della resistenza all'isolamento e così via.Con ricche esperienze di misurazione di innovazione combinando e tecnologia avanzata per fornire la misurazione elettrica più affidabile. La produzione, lo sviluppo e l'ispezione della progettazione sono effettuati secondo le norme ISO 9001 e CE, che garantiscono la coerenza dei prodotti di alta qualità.XZH TEST padroneggia una varietà di tecnologie e un servizio e supporto estesi per offrire il massimo valore ai nostri clienti. Noi sosteniamo sinceramente il principio di "qualità prima, i clienti supremi, onore impegno fiducia degno".Resta impegno R & D su apparecchiature di rilevamento di energia elettrica e automazione di energia elettrica,dalla sua fondazione, l'azienda continua a vivere secondo la convinzione di: "Creare un marchio di alta qualità, gettando un'immagine imprenditoriale di prima classe"."la migliore qualità" come concetto fondamentale dell'impresa. Il nostro obiettivo è quello di fornire ai nostri clienti attrezzature di prova e misura affidabili che siano più sicure e facili da usare, rendendo la misurazione più facile! Xi'an Xu & Hui Electromechanical Technology Co., Ltd. si aspetta di rafforzare il rapporto con i collaboratori di tutto il mondo.e di cuore benvenuti partner commerciali per visitare la nostra fabbrica per sviluppare la OEM & ODM win-win cooperazione. La nostra squadra Scena della fabbrica La formazione è un corso fondamentale per tutti i membri e organizzeremo vari corsi di formazione per aiutarci a migliorare le nostre capacità e a trovare la bellezza della vita.Apprezziamo il tempo che trascorriamo insieme a studiare. Servizi Abbiamo la capacità di innovare nuovi prodotti e tecnologie. Possiamo fornire soluzioni complete per il vostro progetto. Forniamo formazione pratica e teorica online e offline. Forniamo la riparazione e la taratura degli strumenti. Certificazione
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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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Edificio B8-01, fase I, Ronghao Industrial City, n. 2098, Weiyang 9th Road, Gaoling District, Xi'an, Cina
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