LV Cable Fault Locator with High Voltage Constant Current Source

The cable outer sheath fault tester is especially suitable for 1.The high-resistance breakdown point of the cable after laying, especially the low-resistance linear high-resistance breakdown point, such as the linear high-resistance breakdown of the cable middle joint. 2. Flashover type breakdown point. After breakdown, the constant current source can maintain the arc, and there is a stable current through the bridge, the bridge has sufficient sensitivity. 3. Defects that have not been broken down but have low resistance, such as insulation defects that have low cable resistance but do not break down under operating voltage.

Feature

1.The cable outer sheath fault tester is designed based on the principle of MURRAY bridge. It can be used to locate the breakdown points of various wires and cables and the defect points without breakdown but low insulation resistance.

2.The equipment uses an electric voltage regulator and an R-type transformer to form a high-voltage constant current source, and the button operation increases and decreases the voltage. The no-load voltage is 5000V, the short-circuit current is 100mA, and the high-sensitivity amplifier and galvanometer are used to indicate balance. It forms a balance bridge with a proportional potentiometer, and the whole is placed at a high potential.

3.The measuring cable is a specially designed double-core high-voltage rubber cable. The four-terminal resistance measurement method avoids the error introduced by the lead resistance.

4.The operating knob on the panel operates the internal high voltage through the insulating rod. The entire panel is at a low potential.

5.The equipment is also equipped with a 12806 display screen, one-key operation, the input cable length can be automatically calculated, and the distance to the fault.

6.The high-voltage source and the electric bridge are integrated in a portable protective box. Therefore, the equipment has high voltage, light weight, convenient operation and safe use.

7.Compared with the wave reflection method, the bridge balance method has no blind spots, and is particularly suitable for judging short cables and the breakdown point near the end.

Technical Parameters

1. No-load voltage: ≤7500V

2. Short-circuit current: ≥40mA

3. Positioning proportional accuracy:±(0.1%•L±1) m

4. Weight: 5.5kg

5. Power supply: AC 220 and 9V batteries, Working power supply: AC 220V+/-10% 50Hz

Product Features:

1. Output voltage is adjustable;

2. Has high accuracy and stability;

3. Adopt high-sensitivity amplifier and galvanometer to indicate balance;

4. Zero protection;

5. Automatically test fault points, but retain manual testing functions;

6. Compared with the wave reflection method, the bridge balance method has no blind area and is used to determine the breakdown point of short cables and near the ends.

Technical Parameters

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