Xzh Test Factory Portable Electric Bridge Underground Cable Sheath Fault Pre Locator

• After-sales Service: Warranty
• Warranty: 1 Year
• Power: Electricity
• Certification: CE, ISO
• Customized: Customized
• Color: Black
• Model NO.: XHHG521B
• No-Load Voltage: 0~4000V
• Weight: 5.5kg
• Working Power Supply: AC 220V+/-10% 50Hz
• Transport Package: Wooden Case Filled with Foam
• Specification: 5.5kg
• Trademark: XZH TEST
• Origin: China Xi′an
• Production Capacity: 1000 Pieces /Year

Product Description

 

 

 

Product Description

The XHHG521B cable sheath fault pre locator is designed based on the principle of MURRAY bridge, which can be used for the location of the breakdown point of various wires and cables and the defect point with no breakdown but low insulation resistance value.

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

The measuring cable is a specially designed double-core high-voltage rubber cable, and the four-terminal resistance measurement method is used to avoid the error introduced by the lead resistance.

The operating knob on the panel operates the internal high voltage through an insulating rod. The panel as a whole is at low potential.

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

The high voltage source and bridge are integrated in a portable protective case. Therefore, the device has high voltage, light weight, convenient operation and safe use.

Compared with the wave reflection method, the bridge balance method has no dead zone and is especially suitable for judging the breakdown point of short cables and near the end.

 

Product Features

The cable sheath fault pre locator is especially suitable for

1. The high-resistance breakdown point of the cable after laying, especially the linear high-resistance breakdown point that is difficult to burn low-resistance, such as the linear high-resistance breakdown of the cable intermediate joint.

2. Flashover type breakdown point. After the breakdown, the constant current source can maintain the arc, a stable current flows through the bridge, and the bridge has sufficient sensitivity.

3. The defect points that have not yet broken down but have low resistance, such as the insulation defect points that have low resistance value of the cable but do not break down under the operating voltage are found by using a megohmmeter.


Welcome you contact us for more information.
 

Product Parameters

No-load voltage	≤6000V
Short circuit current	≤100mA
Positioning accuracy	±(0.1%·L±1)meters
Weight	25kg
Working power supply	AC 220V+/-10%  50Hz / DC 9V battery

Detailed Photos