logo
Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
Home
Products
Cable Fault Locator
TDR Cable Fault Locator
Cable Fault Pinpointer
Cable Route Tracer
High Voltage Surge Generator
Cable Sheath Fault Locator
Cable Identifier
Cable Spiker
Cable Test Van
Cable Fault Simulation System
Digital Burn-Through bridge
DC High voltage Power Supply
Energy Storage Capacitor
Portable Cable Fault Location System
Transformer Tester
CT PT Analyzer
Circuit Breaker Analyzer
Relay Protection Tester
Ground Tester
AC DC Hipot Tester
Videos
About Us
Company Profile
certification
Factory Tour
QC Profile
Contact Us
News
Cases
quote
quality Cable Fault Locator factory
quality Cable Fault Locator factory
quality Cable Fault Locator factory
quality Cable Fault Locator factory

HOT PRODUCTS

We are growing in many areas.
quality Portable Automatic Test Long Cable ARC Multi Pulse Cable Fault Pre Locator factory

Portable Automatic Test Long Cable ARC Multi Pulse Cable Fault Pre Locator

Contact Us
quality 32kV 2000J Arc Digital Underground Portable Cable Fault Locator System factory

32kV 2000J Arc Digital Underground Portable Cable Fault Locator System

Contact Us
quality Customized Cable Fault Test Van Power Transformer Comprehensive Test Vehicle factory

Customized Cable Fault Test Van Power Transformer Comprehensive Test Vehicle

Contact Us
quality Cable Identifier Identification Of Live And De-Energized Cables factory

Cable Identifier Identification Of Live And De-Energized Cables

Contact Us
quality Portable Double Shooter Remote Control Safe Cable Piercing Cable Spiker factory

Portable Double Shooter Remote Control Safe Cable Piercing Cable Spiker

Contact Us
quality 35kv DC Impulse 1000j Surge Generator for Underground Cable Fault Location factory

35kv DC Impulse 1000j Surge Generator for Underground Cable Fault Location

Contact Us
China Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
about us
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 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
read more >>
0

No. of Employees
0

Annual Sales
0

Year Established
Created with Pixso.
0

Export p.c

News

Science Popularization Mini-Lesson: Parallel Equivalent Circuits 2025-12-11 The figure shows the equivalent circuit of a power cable.In the figure, L represents the equivalent inductance of the cable, with a value of 0.1-0.7 mH/km, which can generally be calculated using a formula. Power Cable Equivalent Circuit (a) Theoretical equivalent circuit; (b) Actual equivalent circuitL = 0.05 + 0.2 * ln(ks/r) Where k is a coefficient (k=1 for triangular structure, k=1.26 for parallel structure, see cable structure diagram);S is the distance between the centers of the conductors in mm;R is the radius of the conductor in mm. Cable Structure Diagrams(a) Triangular structure; (b) Parallel structureDue to the relatively small equivalent value of L, it can be considered a short circuit in practical analysis.  The figure shows the equivalent inductance values ​​of some XLPE power cables. Figure RX shows the DC resistance of the power cable core conductor, which is related to the conductor material, core cross-sectional area, and cable length, and conforms to the following relationship: where ρ is the resistivity; at an ambient temperature of 20℃, ρCU = 1.75 × 10⁻⁸ Ω·m, ρAL = 2.83 × 10⁻⁸ Ω·m, and ρsteel strip = 8.79 × 10⁻⁸ Ω·m;LC is the cable length in meters;S is the cable conductor cross-sectional area in mm².The table shows the maximum DC resistance values ​​of some XLPE power cable cores (at 20℃). In the figure, R0 and C0 are two parameters related to the cable insulation material and its structure. R0 is generally small, but much larger than RX, i.e., R’0 ≈ R0; C0 can be considered as the equivalent capacitance between the cable core and the cable metal shield, with a value of 0.1-0.7 μF/km.  It can generally be calculated using a formula. In the formula, ε is the dielectric constant of the insulating medium, such as the dielectric constant of XLPE power cables ε1=2.3, and the dielectric constant of oil-impregnated paper insulated cables ε2=3.3;d1 is the diameter of the conductor core, including the semiconductor shielding layer;d2 is the outer diameter of the insulation. The table shows the single-phase equivalent capacitance of some XLPE power cables.Series equivalent circuits are generally used when analyzing AC circuits.
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.
TOP selling
More Products
Customized Multiple Frequency Underground Metal Pipe Detector for Electricity-Powered
Multifunction Digital Handheld Underground Metal Cable Pipeline Detector Customizable
Direct High Voltage Circuit Breaker Tester Switch Analyzer with Certificate
XHGX507 72.5x43x21cm Electric Power Cable Path Meter Fault Locator Cable Pipeline Detector
100kv Insulating Oil Withstand Voltage Tester for After Sale Serive
Cable Thumper High Voltage Pulse Generator For Cable Fault Location
Xzh 535-4t 35kv 2450j High Voltage Pulse Generator Cable Thumper for Surge Generator
Transformer Insulating Oil Dielectric Loss Tester
Automatic Open/Close Cup Flash Point Tester for Transformer Oil Blue and Customizable
Digital Handheld Contact Resistance Tester Micro-Ohmmeter 0-10Kg Digital Display
Ohmmeter Resistance Tester with Portable Digital Handheld Electric Switch
Customized 100A High Current Contact Resistance Tester for Loop Resistance Testing
Multifunction Sulfur Oxide Qualitative Electronic Leak Detector for Gas Leak Detection
Professional Three-Phase Microcomputer Relay Protection Tester for Protection Testing
Loop Resistance Tester with Customization Option 100A/200A Test Current
Highly Sensitive Sulfur Hexafluoride Qualitative Leak Detector
Digital High Voltage Circuit Breaker Analyzer Hv Switch Dynamic Characteric Tester
Switch HV Circuit Breaker Tester for Gas Testing and Quick Gas Saving
Sulfur Hexafluoride SF6 Dew Point Meter High Voltage Circuit Breaker Testing
High Accuracy 6 Phase Protection Relay Tester Set Customization Promotion
CONTACT US AT ANY TIME
Building B8-01, Phase I, Ronghao Industrial City, No. 2098, Weiyang 9th Road, Gaoling District, Xi'an, China
What would you like to request?
CUSTOMERS & PARTNERS
XZHTEST2013
Quick link
Home Products About Us Video News Cases Contact Us
Quick Contact

Address

Building B8-01, Phase I, Ronghao Industrial City, No. 2098, Weiyang 9th Road, Gaoling District, Xi'an, China

Tel

86-029-86093121-86093122

XZHTEST2013
Our Newsletter
Subscribe to our newsletter for discounts and more.
Privacy Policy |  Sitemap  | China Good Quality Cable Fault Locator Supplier. Copyright © 2024-2025 Xi'an Xu&Hui Electromechanical Technology Co., Ltd. . All Rights Reserved.