Xzh Test Factory New Design Overhead Line Cable Fault Locator

• After-sales Service: Warranty Certificate
• Warranty: 1 Year
• Test Mode: Point Test
• Cable Type: Overhead
• Certification: ISO
• Customized: Customized
• Model NO.: XHJK531A
• Color: Black
• Transport Package: Wooden Case Filled with Foam
• Trademark: XZH TEST
• Origin: China Xi′an
• Production Capacity: 100 Pieces /Year

Product Description

 

 

Product Introduction

XHJK531A overhead line fault tester is an inspection device for single-phase grounding fault points of distribution lines, which is used to find single-phase grounding fault points of cable voltage such like 6kV, 10kV, 20kV, and 35kV overhead lines. For concealed ground faults such as porcelain bottle breakdown and arrester breakdown, the search is fast, time-saving and labor-saving, and the search time can be shortened by 60%.

When the line has a ground fault, in the state of cold standby of the line (without any grounding protection when the power is cut off), a detection signal with a certain power is injected into the line through the signal generating device (referred to as: signal source), and then the hand-held data detection device (referred to as the signal source) is injected into the line. : Clamp meter) to measure the signal current on both sides of the injection point, and judge the difference between the fault side and the fault through the data displayed by the hand-held data receiving device (referred to as: hand copy device).

Keep the injection point of the signal source not moving. On the fault side, use the dichotomy method to measure the current at half of the faulty line to further determine the faulty section, and so on, reduce the faulty section by half each time until the fault point is found.

The principle of using the locating device to find the ground fault is shown in the following figure:







 

Main Features
 

1. Find fast and accurate.
The fault finding is fast, and the error of the fault point is less than 1 meter.
2. Easy to carry and use.
The signal source is powered by lithium battery, which is small in size, light in weight and easy to carry.
3. Safe and reliable operation.
The operator operates through an insulating rod, and the device is equipped with overvoltage protection to ensure safe operation.


compositionThe positioning device consists of a signal injection part and a signal detection part.

Signal injection part
The function of the signal injection part is to inject a 22Hz detection signal into the ground fault line when the line is powered off. Main components: signal source. Accessories: signal output cable, grounding cable, retractable gram bars (3), single-tongue grounding hook (3), charger, etc., as shown in the figure below.

Signal detection part
The main components of the signal detection part: clamp meter, hand copy device, as shown in the figure below. Accessories: retractable gram stick (1 piece).

1) Clamp meter, used to measure the detection signal from the signal source.
2) Hand copy device, used to receive and display the measurement data sent back by the clamp meter, and can carry out operations such as data retention, storage, review, deletion, etc.



Technical parameter
Signal Source Specifications

Output AC detection current	0~40±2mA
Output AC detection voltage	0~3kV
Output DC ground impedance current	0~37±2mA
Output DC ground impedance voltage	0~4.2kV
Ground Impedance Current Accuracy	±1mA
AC detection signal output accuracy	±1mA
Output Power	Effective maximum output power 95W
Measuring range	Ground resistance≤100kΩ
Detect line length	≤100km
Ground Impedance Measurement	0~2000 kΩ
Ground impedance measurement accuracy	10%±2kΩ
Signal loop open circuit protection time	≤1S
Signal output loop integrity detection protection time	≤2S
Detection signal fluctuation alarm threshold	±2mA
Open Circuit Identification Current Threshold	≤2mA
Low power alarm	23V
Under voltage power outage	22V
No operation automatic power off time	0~10S
display mode	Dot matrix display, backlight function
Rated working voltage	24VDC
Operating voltage range	21-29.4V
battery capacity	24V/7AH
Battery voltage detection accuracy	2%
Power maintenance time	>3.5 hours
Working temperature	-20ºC~50ºC
Device size(mm)	L457*W370*H184
Weight	11.3Kg

 

Welcome you contact XZH TEST for more information.