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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. has found in 2013, located in Xi'an, China. which is a highly experienced team dedicated to developing electrical measurement instrument, the product line covers a wide range of devices for testing various electrical area, such as underground cable fault locating system, power transformer test, AC/DC Hipot test, Insulation resistance test and so on. With rich measurement experiences of innovation combining and advanced technology to provide the most reliable electrical measurement. The design development production and Inspection is performed at the ISO 9001 and CE which gurantee a consistency of high quality products. XZH TEST masters a variety of technologies as well as extended service and support to deliver the highest value to our customers. We sincerely hold the tenet of "quality first, customers supreme, honor commitment trust worthy".Stays commitment R&D about electric power detection equipment and electric power automation, since its foundation, the company keeps living up to the belief of: "Create high-quality brand, casting first-class enterprise image". Also, we make the "steady development, the best quality "as the core concept of the enterprise. Our goal is to provide our customers with reliable test and measurement equipment that more safe and easy to use, we make measurement easier! Xi'an Xu & Hui Electromechanical Technology Co., Ltd expect to strengthen the relationship with world-wide cooperators, and warm-heartedly welcoming business partners to visit our factory for developing the OEM & ODM win-win Cooperation. Our Team Factory scene Training is a core course for all the members and we will organize various trainings to help us to improve our abilities and Let us find the beauty of life. We treasure the time we are learning and studying together. Services We have the ability to innovate new products and technologies. We can provide complete system solutions for your project. We provide online and offline practical and theoretical training. We provide instrument repair and calibration. Certification
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Popular Science Lesson: Wrapped Cable Joint 2025-12-02 The insulation and semi-conductive shielding layers of the wrapped cable joint are both made of self-adhesive tape with rubber as the base material. It is mainly suitable for the termination and intermediate joints of medium and low voltage extruded insulated cables of 35kV and below. Schematic diagram of the structure of a wrapped extruded cable joint (a) Single-core cable joint(b) Three-core cable joint 1, 15 – Cable outer sheath;2, 16 – Metal shielding layer;3, 27 – Crossover ground wire;4, 17 – Binding copper wire;5, 18 – Cable outer semiconductive layer;6, 20 – Self-adhesive rubber semiconductive tape;7, 21 – Copper shielding mesh;8, 22 – Heat shrink tubing;9, 19 – Cable insulation layer;10, 23 – Reactor;11, 24 – Cable inner lining layer;29 – Cable armor Schematic diagram of a wrapped cable terminal structure:1—Terminal;2—Cable core;3—Cable insulation and self-adhesive rubber insulation tape;4—Rain cover;5—Branch sleeve;6—Cable grounding wire;7—Cable outer sheath;8—Stress pile Prefabricated cable joints are cable joints made from prefabricated cable accessories. These accessories are made of silicone rubber or EPDM rubber and consist of a series of attachments that provide the necessary shape for the cable joint. During field installation, simply slip the accessories over the cable insulation, simplifying the installation process. Because prefabricated cable accessories must correspond one-to-one with the cable's outer diameter, there are many specifications and models available. Currently, prefabricated cable accessories are used on cables of various voltage levels. The internal structure of the cable joint is basically the same as that of a cold-shrink cable joint.
Popular Science Lesson: Cast Cable Joints 2025-11-26 Cable joints utilize either a metal sheath (iron, lead, aluminum, etc.) or a non-metallic sheath (nylon, plastic, etc.), with an insulating casting agent (such as epoxy resin, asphalt, cable oil, etc.) poured inside to form the joint. This type of joint is commonly used in oil-impregnated paper-insulated power cables. The figure shows a schematic diagram of a 6-35KV oil-impregnated paper-insulated cable intermediate joint. The joint sheath uses a lead sleeve. To ensure good contact between the lead sleeve and the cable's lead sheath, the ground wires at both ends of the cable should be welded to the lead sleeve last. Figure 6 - Schematic diagram of the intermediate joint structure of a 35KV oil-impregnated paper-insulated cable 1 – Steel strip; 2 – Steel strip clip; 3 – Lead-lined; 4 – Lead sleeve; 5 – Glue injection hole; 6 – Ground wire; 7 – Lead sheath; 8 – Semi-conductive paper; 9 – Cable sheath insulation; 10 – Insulated core wire; 11 – Core wire connection point In practice, there are also intermediate connectors with non-metallic shells or no shell at all, with only a ground wire connecting the two ends of the connector. The failure rate of this type of intermediate connector is relatively high and it is relatively difficult to measure. The figure shows a schematic diagram of the terminal joint structure of a 6-35kV oil-impregnated paper-insulated cable. 1—Terminal; 2—Wire core insulation; 3—Insulating sleeve, etc.; 4—Insulating adhesive; 5—Cable sheath insulation; 6—Semi-conductive paper; 7—Non-metallic outer shell; 8—Lead sheath; 9—Steel tape clip; 10—Ground wire; 11—Steel tape
Popular Science Lesson: Classification of Power Cable Joints by Application 2025-11-24 In power transmission and distribution lines, a complete power cable line consists of two main parts: the cable body and the cable joints. Cable joints are a crucial component of power cable lines. During cable installation, laying, and operation, the failure rate of cable joints is often much higher than that of the cable body. Therefore, analyzing and understanding the condition of cable joints is essential. According to their purpose, cable joints are generally classified into two types: terminal joints and intermediate joints. Terminal joints can be further divided into the following three types: (1) Indoor terminal joints. Used indoors to connect the cable to the power supply equipment. Their appearance is shown in Figure (a). (2) Outdoor terminal joints. Used outdoors to connect the cable to the power supply equipment. Their appearance is shown in Figure (b). (3) Equipment terminal joints. Used when connecting the cable to electrical equipment, with the high-voltage conductive metal in a fully insulated and enclosed state. There are three main types of intermediate joints: (1) Butt Joint: Two identical or different cables are directly butted together, as shown in Figure (a). Schematic diagram of cable intermediate joints: (a) Butt Joint; (b) T-Joint; (c) X-Joint (2) Branch Joint: Connecting a branch cable at a point on the main cable is called a T-Joint. When two branch cables simultaneously branch off at a point on the main cable, it is called an X-Joint. T-Joints and X-Joints are shown in Figures (b) and (c). (3) Transition Joint: The connection between two cables with different insulation types (such as cross-linked polyethylene cable and oil-impregnated paper-insulated cable).
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Building B8-01, Phase I, Ronghao Industrial City, No. 2098, Weiyang 9th Road, Gaoling District, Xi'an, China
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