Test Procedures for Power Cable Fault

The cable fault tester must go through the following steps to find power cable faults:

(1) Understand the faulty cable: withstand voltage level, cable length, insulation medium, insulation resistance, buried path, and the cause of the fault.

(2) Analysis of the nature of the cable fault: use the "low voltage pulse" of the cable fault tester to test the length of all phase wires of the faulty cable and calibrate the radio wave transmission speed of the faulty cable; use the insulation resistance tester to measure the fault insulation resistance value.

(3) Select the appropriate test method: use a cable fault tester to perform a rough test of cable faults.

(4) Precise measurement of cable fault points: including the search for the direction and depth of buried cables and fault points precise positioning.

(5) Error analysis: Carry out error analysis (measurement error, transmission speed misinterpretation error, instrument error) on the cable fault test results.

XHGG501D underground cable fault locator, simple operation software interface, single-chip centralized control, touch operation mode, built-in large-capacity lithium-ion battery, stable and reliable, easy to use.

This cable fault locator is a special instrument for measuring and analyzing power cable fault status and fault distance. This cable fault locator adopts modern electronic technology to realize signal filtering, acquisition, data processing, graphic display and graphic analysis to complete cable speed measurement, cable length test, cable fault distance test, resistance test.

XHGG501D is suitable for low-resistance, short-circuit, open-circuit and disconnection faults, as well as leakage high-resistance and flashover high-resistance faults of power cables, coaxial cables, street light cables, buried wires, etc. of various materials with different cross-sections and different media.

Features

• Industrial grade 10" LCD display, working temperature -20℃～+60℃

• Single-chip centralized control, touch operation mode, strong anti-interference ability

• It has functions such as distance measurement, speed measurement and resistance measurement

• Fully automatic continuous sampling, waveform capture is timely and accurate

• With low-voltage pulse sampling method, flashover sampling method

• Built-in large-capacity battery pack, easy to use

• Adopt protective case, not lower than PI54

Technical parameters:

Xi'an Xu&Hui Electromechanical Technology Co., Ltd. (XZH TEST) 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.

History

On February 1, 2013, Xi'an Xu&hui Electromechanical Technology Co., Ltd. was established.

In 2014,  the second-generation demagnetizer was launched, which quickly and thoroughly solved the residual magnetism problem of 750kV transformers. Successfully passed IS09001 quality system certification and Ce certification.

 In 2015,  we moved to a 600 square meter plant to solve the problem of on-site calibration of 1000kV lightning arrester monitors.

 In 2016,  the problems of large energy loss and difficult waveform analysis in cable fault detection were solved and an invention patent was obtained.

In 2017,  it was awarded the National High-tech Enterprise, and products were exported to more than ten countries and regions.

In 2018,  1SO 9001 Quality Management and ISO 14001 Environmental Management and ISO45001 Occupational Health successfully passed , and obtained the third-level qualification for general contracting of electric power and the fourth-level qualification for installation (repair and testing)

In 2019,  a self-owned and independent plant of 3,000 square meter. Smoothly carried out 220kV, 750kV and 1000kV special adjustment and maintenance test projects.

In 2020, Ubiquitous power detection platform, various cable fault simulation platforms were established, and "JJ Machinery 1042-2020 Cable Fault Tester Calibration Specification" was drafted and successfully passed

In 2021,  a 10kV and 110kV cable fault training system was established in a certain power school. Oscillating wave partial discharge and ultra-low frequency dielectric loss detection projects were promoted.

In 2022,  Successfully delivered several military cable inspection vehicles. Products are exported to more than 50 countries and regions.

In 2023,  Successfully passed the A-level of the integration of information and industrialization management system, participated in the revision of "D.L/T849.4-2004 "General Technical Conditions for Special Test Instruments for Power Equipment Part 4 Ultra-low Frequency High Voltage Generator"" and successfully passed it.

In2024,  Won the title of Gazelle Enterprise

In 2025  Continue to work hard to write a new chapter

Certification