Portable Fault Locator for Underground Cable Sheath Detection

• Customization: Available
• After-sales Service: Warranty Certificate
• Warranty: 1 Year
• Model NO.: XHHG520L
• Transport Package: Wooden Case
• Specification: 490*380*320mm
• Trademark: XZH TEST
• Origin: China Xi'an
• HS Code: 9031809090
• Production Capacity: 2000pieces /Year
• Package Size: 60.00cm * 36.00cm * 50.00cm
• Package Gross Weight: 40.000kg

Product Description

 

 

XHHG520L              
Intergrated Cable sheath fault location testing set
 

15kV bridge circuit + burn-through withstand voltage test + step voltage fault location + clamp-on current fault location, 1000W power.

Bridge Section:
★No-load voltage: ≥15kV;
★Short-circuit current: ≥100mA
★Power supply: AC 220V (±10%), 50Hz±1Hz; 8.4V built-in battery.
Withstand Voltage and Positioning Section:
★ Output voltage: 0-15kV (square wave), adjustable;
★ Output current: 0-200mA;
 

Product Description

 

Integrated cable sheath fault testing system is designed based on the Murray bridge principle and can be used to locate breakdown points and defective points with low insulation resistance in various wires and cables.

The high-voltage cable sheath fault tester has an output voltage of 15kV and below, fully meeting the cable sheath withstand voltage test requirements of the Chinese national standard GB50150-2006, including acceptance tests and preventive tests for cable sheaths in cross-linked systems, as well as cable sheath fault location. It can quickly and accurately locate grounding faults and excessive leakage current in 10kV-500kV single-core and three-core high-voltage and ultra-high-voltage cable sheaths. It can also perform 5kV-15kV, 1-minute DC withstand voltage tests on high-density polyethylene and polyvinyl chloride cable sheaths. It is an essential specialized instrument for cable equipment maintenance in 10kV-500kV single-core and three-core high-voltage and ultra-high-voltage cable operating units, ultra-high-voltage cable engineering companies, and various power transmission and transformation engineering companies.
 
The cable outer sheath fault tester is particularly suitable for:
1. High-resistance breakdown points in cables after installation, especially linear high-resistance breakdown points that are difficult to burn into low resistance, such as linear high-resistance breakdowns in cable joints.
2. Flashover type breakdown points, where the constant current source can maintain the arc after breakdown, allowing a stable current to pass through the bridge, and the bridge has sufficient sensitivity.
3. Defect points that have not yet broken down but have abnormally low resistance, such as insulation defects where the cable resistance is low as detected by a megohmmeter, but does not break down under operating voltage.     
 

Technical Parameters

Bridge Section:	Open-circuit voltage:	≥15kV
	Short-circuit current:	≥100mA (when balancing, it is recommended to set it to 5-40mA);
	Positioning accuracy:	±(0.2%·L±1) meters;
Withstand Voltage and Positioning Section:	Input voltage:	220V (±10%), 50Hz (±2Hz);
	Output voltage:	0-15kV (square wave), adjustable;
	Output current:	0-200mA;
	Output capacity:	2kVA;
	Frequency adjustment:	Min: 0.2Hz, Max: 5Hz (adjustable range).
weight & power	Weight:	35kg;
	Power supply:	AC 220V (±10%), 50Hz±1Hz; 8.4V built-in battery.

 

Product Features
Bridge Section:
1.Adjustable output voltage;
2.High accuracy and stability;
3.Uses a high-sensitivity amplifier and galvanometer for balance indication;
4.Zero-position protection;
5.Automatic fault point testing, but retains manual testing function;
6.Compared with the wave reflection method, the bridge balance method has no blind spots and is used to determine short cables and breakdown points near the ends.

Withstand Voltage and Location Section:
1. Zero-position start protection, automatic overcurrent, overvoltage, and overheating protection functions;
2. Unique self-discharge design: After the high-voltage output is switched off, the high voltage automatically drops to zero;
3. Dual-pointer meters display current and voltage;
4. One-button switching between positioning mode and pressure resistance mode;
5. No blind spots in the test range;
6. Adjustable receiver sensitivity for convenient positioning;