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Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
Xi'an Xu&Hui Electromechanical Technology Co., Ltd. Established on February 1, 2013, and headquartered in Xi'an, China, XZH TEST operates a dedicated four-story R&D and manufacturing facility spanning 3,000 square meters. Leveraging partnerships with prestigious institutions—such as Xidian University, Xi'an Jiaotong University, and various high-voltage research institutes—the company provides advanced high-voltage testing equipment and instrumentation. It serves a wide range of clients, including power system sectors (generation, transformation, distribution, and consumption), research organizations, and manufacturers of power equipment. XZH TEST is a national-level high-tech enterprise integrating research and development, production, sales, training, and service. 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! Our Team We possess a highly experienced professional team, and our product design, R&D, manufacturing, and verification processes strictly adhere to ISO 9001 and CE standards, ensuring consistently superior quality. Dedicated to the research and development of electrical measurement instruments, our product portfolio encompasses a wide range of electrical testing equipment, including underground cable fault location systems, power transformer testing units, AC/DC withstand voltage (Hipot) testers, and insulation resistance testers. Leveraging our extensive expertise in measurement technology and continuous innovation—complemented by comprehensive service and technical support—we are committed to creating maximum value for our customers and delivering the most reliable electrical measurement solutions. Factory scene Our modern manufacturing plant features tidy, well-lit workshops with strict 5S management. Well-organized production zones, complete ventilation and purification systems create a clean, safe working environment, ensuring high-precision production for all power testing equipment. Certification Our enterprise holds complete authoritative qualifications including high-tech enterprise certificate, ISO quality management system certification, dozens of independent patents and professional power industry access licenses. All our power testing equipment passes strict standard performance inspection, full compliance certificates support domestic bidding and overseas export, reliable certification guarantees stable and high-quality products for global power engineering customers.
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XZH TEST Launches Fully Domestic Export-Edition Power Testing Vehicle for Belt and Road Substations 2026-10-24 XZH TEST Launches Fully Domestic Export-Edition Power Testing Vehicle Chinese Intelligent Manufacturing Goes Global to Support High-Quality Power Development Along the Belt and Road XZH TEST Electromechanical Technology Co., Ltd. has launched its Export-Edition Power Testing Vehicle, a fully domestically developed, self-contained mobile test platform designed to address the growing demand for grid operation and maintenance, fault location, and equipment condition assessment across the substations and power networks of Belt and Road countries. As global energy infrastructure investment continues to accelerate, grid construction in many countries along the Belt and Road is advancing rapidly, and the demand for grid operation and maintenance, fault diagnosis, and equipment condition assessment is rising every day. Traditional on-site power testing still faces persistent challenges: a proliferation of scattered and independent test instruments, heavy and laborious equipment handling, complex on-site wiring, and the frequent lack of a reliable power supply in remote field environments. These factors consume considerable manpower and resources, constrain grid operation and maintenance efficiency, and make it difficult to fully safeguard power supply reliability. Building on its independent R&D strengths in domestic power testing equipment, XZH TEST has drawn on years of technical accumulation and engineering experience to develop a fully domestic, export-oriented power testing vehicle. Through scientific spatial layout and a highly modular, integrated design, the vehicle consolidates a complete suite of self-developed professional power testing instruments onto a single mobile platform, creating a mobile “power comprehensive test laboratory” that can be deployed directly to the site. With the strength of Chinese intelligent manufacturing, XZH TEST delivers an integrated testing and maintenance solution for overseas power grids, demonstrating the technical capability and product reliability of domestic power testing equipment. Fig. 1  The XZH TEST Export-Edition Power Testing Vehicle on the road Full-Stack Domestic System Integration Delivers One-Stop Substation Testing Coverage Every core testing instrument inside the vehicle is independently developed and manufactured by XZH TEST, eliminating dependence on external equipment. The integrated platform delivers efficient and accurate on-site testing, commissioning, and comprehensive condition assessment of key primary and secondary substation equipment, covering the full range of testing requirements for power transformers, instrument transformers, high-voltage switches, lightning arresters, power cables, relay protection, and grounding grids. Power Transformer Testing System: integrates the XHTX1318AJ transformer characteristic tester, XHZ1320 DC resistance tester, XHBB128B ratio and group tester, XHZK1620 low-voltage short-circuit impedance tester, XHBX1502 transformer winding deformation tester, XHYS101A transformer oil dielectric loss tester, XHYY102 insulating oil withstand voltage tester, and XHXC105A demagnetizer. Instrument Transformer Testing System: integrates the XHTX206 instrument transformer characteristic tester. High-Voltage Switch Testing System: integrates the XHJJ302AC circuit breaker mechanical characteristic tester, XHHL3200 contact resistance tester, and XHJL309 sulfur hexafluoride (SF6) comprehensive tester. Lightning Arrester Testing System: integrates the XHJS401A arrester monitor calibration tester and XHDD405 live zinc-oxide (ZnO) arrester tester. Power Cable Detection and Testing System: integrates the XHGG502A cable fault tester, XHDD503E cable fault locator, XHGX507C cable comprehensive tester, XHHV5354TSC high-voltage pulse generator, XHHD520 outer-sheath fault comprehensive assessment instrument, XHSC60Q intelligent burn-down bridge, XHDL51X cable quality analyzer, HDPJ80 very-low-frequency (VLF) dielectric loss tester, XHOW56035 cable oscillating-wave partial discharge detector, XHZK550 cable broadband impedance analyzer, XHZS506YS cable piercing device, XHSB505B live cable identifier, and XHZL509 cable length meter. Relay Protection Testing System: integrates the XHJB666 relay protection tester. Substation Grounding Grid Testing System: integrates the XHEP701A ground grid resistance tester and XHDJ706 grounding resistance and soil resistivity tester. Comprehensive Power Testing System: integrates the XHJS1000C dielectric loss tester, XHYB10/100 AC/DC withstand voltage device, XHJF870D live partial discharge tester, XHCF220/50 battery charge/discharge device, XHMR5000C insulation resistance tester, XHXW905S three-phase volt-ammeter, and XHBN900 power quality analyzer. Fig. 2  Rear equipment bay with integrated testing instruments Fig. 3  Main control console and onboard test instruments Fig. 4  Vehicle interior equipment racks and cabinets Vehicle Integration and Power Supply Adapted to Demanding Overseas Field Conditions To cope with the demanding conditions of remote overseas sites — rough roads, high temperatures, dust and sand, and the frequent absence of local grid power — the vehicle has been specially adapted for export with seismic reinforcement, dust-proof and heat-insulation measures, and a dedicated power supply system. A domestically produced 6 kW variable-frequency auxiliary generator supports the continuous, stable operation of the entire suite of precision test instruments even in field environments with no external power, so the team can begin work immediately on arrival without building a separate power supply. Instruments inside the vehicle are mounted with shock-proof, reinforced installation to withstand the vibration of long-distance transport. A complete package of safety protection, grounding protection, and ventilation and heat-dissipation systems enables the vehicle to adapt to a wide range of overseas working conditions, including high temperatures and sandstorms, fully meeting the practical requirements of substation inspection, preventive testing, and emergency fault repair in the field. Fig. 5  Vehicle integration and auxiliary power supply system Competitive Advantages Over Imported Equipment Chinese power testing equipment is accelerating its expansion into the global market. Committed to independent innovation and rigorous R&D, XZH TEST delivers products of reliable quality and breaks through the barriers long held by overseas equipment manufacturers. Compared with imported equipment of equivalent testing accuracy, XZH TEST's solutions offer flexible and customizable configurations, controllable delivery schedules, convenient post-sale maintenance, and efficient spare-part supply. In this way, Chinese power testing technology serves the world's energy construction with cost-effective, full-process localized technical service. Contact For detailed technical parameters and performance specifications, or to customize a dedicated power testing vehicle configuration tailored to your country's working conditions, please contact us at: 400-029-0829. About XZH TEST XZH TEST Electromechanical Technology Co., Ltd. is dedicated to the high-voltage power testing and cable fault detection field. Drawing on years of technical accumulation and engineering practice, the company develops and manufactures professional power testing equipment for customers worldwide, supporting safe and reliable power network operation through innovative and reliable testing solutions. Fig. 6  XZH TEST manufacturing facility
XZH TEST Completes 10kV Cable Fault Detection, Locating Fault at 345.72 m on a 1038.88 m Cable 2026-09-20 .newsx{font-family:Verdana,Helvetica,"Times New Roman",Arial,sans-serif;max-width:100%;margin:0 auto;color:#2b333b;line-height:2;font-size:15px;text-align:justify;} .newsx *{box-sizing:border-box;} .newsx p{font-size:15px;line-height:2;text-align:justify;margin:0 0 16px 0;color:#333b43;} .newsx ul,.newsx ol{list-style:none !important;list-style-type:none !important;padding-left:0 !important;margin:0 0 16px 0 !important;} .newsx li{list-style:none !important;list-style-type:none !important;} .newsx li::marker{content:none !important;} .newsx-sec{font-size:19px;font-weight:bold;color:#1f2d3d;line-height:1.6;margin:28px 0 14px 0;padding:0 0 8px 12px;border-left:4px solid #2c5d8f;display:block;} .newsx-lead{font-size:15px;line-height:2;text-align:justify;color:#333b43;} .newsx-tw{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:14px 0;} .newsx table{border-collapse:collapse !important;border-spacing:0 !important;width:100%;font-size:15px;margin:0;} .newsx th,.newsx td{border:1px solid #d6e2f0 !important;padding:9px 12px !important;text-align:left !important;vertical-align:top !important;font-size:15px !important;line-height:2 !important;} .newsx th{font-weight:bold !important;background:#eaf1f9 !important;color:#1f2d3d !important;} .newsx-list{margin:0 0 16px 0;} .newsx-li{position:relative;padding-left:20px;margin:10px 0;font-size:15px;line-height:2;text-align:justify;color:#333b43;} .newsx-li::before{content:"\2022" !important;position:absolute !important;left:2px !important;top:0 !important;color:#2c5d8f;font-size:16px;line-height:2;} .newsx-cta{margin:24px 0 4px 0;padding:18px 20px;background:#1f2d3d;border-radius:4px;} .newsx-ctat{font-size:16px;font-weight:bold;color:#ffffff;line-height:2;display:block;} .newsx-cta p{color:#dbe6f2;margin:0;font-size:14px;} @media (min-width:768px){.newsx{padding:0 6px;}} XZH TEST completed a 10kV power cable fault detection project for an industrial client, combining low-voltage pulse and high-voltage flashover methods to locate a main-insulation fault on a cable 1038.88 metres long. The fault was pinpointed 345.72 metres from the test end, and the findings point to a likely problem at an intermediate joint. The following is the full test report summary. Project Particulars Project10kV cable fault detection for an industrial client Test personnelYe Peng, Ge Haojie Test date11 September 2026 Cable model8.7/10kV Site informationFrom the substation to the plant area, laid through conduits and trenches; Phase A insulation measured 3.2 MΩ Instruments used5/50 operating-box test transformer, 40/6 capacitor, 503E+ pinpoint locator, cable identification instrument, 501A main unit, and burn-through (burn-out) set Fault natureMegger test: Phase A 3.2 MΩ at 2489 V; the other phases were normal Cable lengthTotal length 1038.88 m Rough Location The rough fault distance was measured using the low-voltage pulse method and the high-voltage flashover method. A high-voltage impulse flashover waveform was captured, and the fault point was found to be 345.72 m from the test end. Waveform Analysis The captured waveforms were analysed as follows: Using the low-voltage pulse waveform, the total length of the cable was measured at 1038.88 m. Using the high-voltage flashover method, when the voltage was raised to 22 kV the fault broke down and a fault waveform was captured. Analysis of that waveform showed a fault distance of 345.72 m. Precise Location Cable route survey: the cable is laid in trenches and the route was basically clear, so no route tracing was carried out. Main-insulation fault location: directly above the cable route, within the rough range given by the high-voltage flashover, the 503E+ pinpoint locator was used to search. With the voltage raised to about 22 kV, the search proceeded along the cable route, and the discharge sound of the fault point was heard at about 345.72 m from the test end, confirming the fault location. Test Summary For cables that can still operate normally but show a relatively low insulation resistance, the low-resistance phase should be investigated to prevent unexpected outages; in most cases this kind of problem is caused by one of the intermediate joints. For faults that cannot be broken down in a short time, burn-through is needed to further reduce the fault resistance and establish a stable fault path, so that the fault can be located. Need a cable fault located quickly and accurately? Contact XZH TEST for cable fault detection equipment and on-site technical support.
XZH TEST Launches XHSB505B Cable Identifier for Live and De-energized Power Cable Field Maintenance 2026-09-18 .xhsb505b-news-8d3a{font-family:Verdana,Helvetica,"Times New Roman",Arial,sans-serif;max-width:100%;margin:0 auto;color:#333;font-size:14px;line-height:2;text-align:justify;} .xhsb505b-news-8d3a *{box-sizing:border-box;} .xhsb505b-news-8d3a p{font-size:14px;line-height:2;text-align:justify;margin:0 0 14px 0;color:#333;} .xhsb505b-news-8d3a h2{font-size:20px;color:#1f3a5f;line-height:1.5;margin:6px 0 10px 0;text-align:left;} .xhsb505b-news-8d3a h3{font-size:16px;color:#24507a;line-height:1.5;margin:22px 0 8px 0;text-align:left;padding-left:10px;border-left:4px solid #2c6e9e;} .xhsb505b-news-8d3a .meta{color:#7f8c8d;font-size:13px;line-height:1.9;margin:0 0 18px 0;text-align:left;} .xhsb505b-news-8d3a .lead{background:#f2f6fb;border-left:4px solid #2c6e9e;padding:16px 18px;margin:0 0 20px 0;border-radius:0 6px 6px 0;} .xhsb505b-news-8d3a .lead p{margin:0;color:#24507a;font-size:15px;} .xhsb505b-news-8d3a ul{list-style:none !important;margin:0 0 16px 0;padding-left:0;} .xhsb505b-news-8d3a ul li{list-style:none !important;position:relative;padding-left:22px;margin:7px 0;font-size:14px;line-height:2;text-align:justify;color:#333;} .xhsb505b-news-8d3a ul li::before{content:"\2022" !important;position:absolute !important;left:0 !important;color:#2c6e9e;font-weight:bold;} .xhsb505b-news-8d3a .tw{overflow-x:auto;-webkit-overflow-scrolling:touch;} .xhsb505b-news-8d3a table{border-collapse:collapse !important;border-spacing:0 !important;width:100%;margin:10px 0 20px 0;font-size:13px;} .xhsb505b-news-8d3a th,.xhsb505b-news-8d3a td{border:1px solid #dbe3ec !important;padding:10px 12px !important;text-align:left !important;vertical-align:top !important;font-size:13px !important;line-height:1.9;} .xhsb505b-news-8d3a th{background:#1f3a5f !important;color:#fff !important;font-weight:bold !important;} .xhsb505b-news-8d3a tr:nth-child(even) td{background:#f7f9fc !important;} .xhsb505b-news-8d3a blockquote{margin:0 0 18px 0;padding:14px 18px;background:#f7f9fc;border-left:4px solid #2c6e9e;color:#24507a;font-size:14px;line-height:2;} .xhsb505b-news-8d3a .cta{background:linear-gradient(135deg,#1f3a5f 0%,#2c6e9e 100%);border-radius:10px;padding:22px 20px;margin:24px 0 8px 0;color:#fff;} .xhsb505b-news-8d3a .cta h3{color:#fff;border-left-color:#ffffff;margin-top:0;} .xhsb505b-news-8d3a .cta p{color:#eaf1f8;} XZH TEST Launches XHSB505B Cable Identifier for Live and De-energized Power Cable Field Maintenance Release Date: September 18, 2026  |  Xi’an, China XZH TEST launches the XHSB505B cable identifier for live and de-energized power cable field maintenance. XZH TEST announces the official launch of the XHSB505B Cable Identifier, a portable field-testing instrument developed for power utility technicians and field contractors. Designed to resolve identification challenges within dense multi-cable ducts, this unit supports both live-cable identification and de-energized cable identification, helping operators locate target cables accurately and prevent safety hazards caused by cable mis-identification. Principle and System Composition Based on the electromagnetic induction principle, the XHSB505B system consists of a transmitter, transmitting clamp, handheld receiver and receiving clamp. The transmitter generates special pulse signals with a pulse cycle of 2.75 seconds. Two output voltage levels are selectable: Mode I (150 V) for de-energized direct-connection testing and Mode II (250 V) for live coupling testing. The instantaneous pulse current ranges from 0 A to 10 A. Transmitter: Pulse Output with Real-Time Status The transmitter is powered by a built-in 12 V DC lithium-ion battery and features an analog ammeter that shows real-time output status. Its special pulse signal and selectable output levels allow the operator to match the instrument to the site conditions, whether the cable is energized or de-energized. Handheld Receiver: Pointer and Beep Judgement The handheld receiver runs on two AA batteries, and users can adjust signal gain via the built-in knob. Identification judgement relies on pointer deflection direction together with audible beep prompts: a synchronized pointer swing and a cyclic “beep-beep-beep” alert confirm the target cable, while irregular or weak pointer movement indicates a non-target cable. Transmitting Clamp and Receiving Clamp The transmitting clamp provides a Φ125 mm jaw opening, while the receiving clamp supports cables up to Φ200 mm outer diameter — suitable for large-size conductors. During live-cable measurement, the transmitting clamp and receiving clamp shall keep more than a 2-metre separation. Operating Modes and Resistance Coverage In de-energized direct-connection mode, the test covers circuit resistance from 0 Ω up to 1 kΩ. For live coupling identification, the applicable circuit resistance ranges from 0 Ω to 50 Ω, requiring reliable grounding at both ends of the cable sheath. Key Features of the XHSB505B Cable Identifier Dual-mode operation: live-cable coupling identification and de-energized direct-connection identification. Analogue pointer reading plus audible beep alarm for clear identification judgement. Φ125 mm transmitting clamp jaw; Φ200 mm receiving clamp jaw for large-size cables. Adjustable receiver signal strength for variable field interference conditions. Portable complete kit with transmitter, handheld receiver, clamps, test leads and charger included. Compact and lightweight design for on-site power maintenance work. Technical Specifications Identification MethodElectromagnetic inductionWorking ModesLive-cable coupling identification; de-energized direct-connection identificationPulse Cycle2.75 secondsOutput Voltage LevelsMode I: 150V (de-energized direct-connection); Mode II: 250V (live coupling)Instantaneous Pulse Current0 A to 10 ATransmitter PowerBuilt-in 12V DC lithium-ion batteryTransmitter DisplayAnalog ammeterTransmitting Clamp JawΦ125 mmReceiving ClampCables up to Φ200 mm outer diameterReceiver Power2 x AA batteriesReceiver GainAdjustable via built-in knobIdentification JudgementPointer deflection direction plus audible beepDe-energized Resistance Range0 Ω to 1 kΩLive Coupling Resistance Range0 Ω to 50 ΩLive Measurement NotesGround both ends of cable sheath; over 2 m clamp separationPackingRugged protective carrying caseWorking EnvironmentIndoor and outdoor, protected against heavy vibration From the Product Department “Mis-identifying cables creates critical risks during cutting and maintenance operations. XHSB505B delivers straightforward pointer-and-sound feedback for field crews, simplifying cable selection in crowded cable trenches for both energized and de-energized circuits.” — XZH TEST Product Department AvailabilityThe XHSB505B Cable Identifier is now available for global inquiry and order. For a datasheet, user manual and technical support, please get in touch with the XZH TEST sales team.
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