Portable Underground Cable Sheath Fault Locator Factory Cable Sheath Fault Pinpointer

• Customization: Available
• After-sales Service: Warranty Certificate
• Warranty: 1 Year
• Model NO.: XHHD523
• Transport Package: Wooden
• Trademark: XZH TEST
• Origin: China Xi′an
• Production Capacity: 100 Pieces /Year

Product Description

 

Product Description

XHHD523  underground cable sheath fault locator

With the full deployment of the urban network transformation, many power supply bureaus, construction parties, and even design units encountered 110kV XLPE cables for the first time. Due to time constraints and insufficient experience, many cables failed to pass the withstand voltage test (10kV/ 1min). At present, most of the outer sheath is made of HDPE sheath material, which has passed the DC 25kV/5min withstand voltage test in the factory, and the leakage current is as low as tens of μA. Therefore, most of the defects after laying are caused by external force damage during laying, including soil filling and cover. Defects after operation usually include termite bites; water in the grounding box; deterioration of the original defect; moisture penetration of the bifurcated part of the grounding wire reduces the insulation resistance, etc., sometimes because the cable is buried too deep or the surrounding conditions are complicated, so It is very difficult to locate, and some defects cannot be resolved after many years, leaving hidden dangers to the operation.



The output voltage of the high-voltage cable outer sheath fault detector is 10KV and below, which fully meets the Chinese national standard GB50150-2006 cable outer sheath withstand voltage test regulations, including the cable outer sheath handover test and preventive test suitable for cross-interconnect systems And the fault location of the outer sheath of the cable. Quickly and accurately find hidden dangers of 10kv-500kv single-core and three-core high-voltage and ultra-high voltage cable outer sheath grounding faults and large leakage currents. At the same time, it can perform 5kv-10kv on high-density polyethylene and polyvinyl chloride cable outer sheaths, 1 The minute DC withstand voltage test is a special instrument necessary for the maintenance of cable equipment of 10kv-500kv single-core and three-core high-voltage and ultra-high voltage cable operation units, ultra-high voltage cable engineering companies, and various power transmission and transformation engineering companies.

 

Features

 

Voltage adjustable.
Frequency adjustable.
Over current protection.
Pin-pointing and withstand testing switched by one button , the receiver sensitivity can be adjust.
Signal frequency adjustable, and zero protection.
The test range without blind area
The receiver sensitivity is adjustable
Signal frequency is adjustable

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The panel of the host(controller)

1. High voltage output terminal
2. Pointer voltmeter 10kV
3. Pointer ammeter 200mA
4. Switch AC220V input
5. Ground column
6. Overcurrent protection switch
7. Positioning/pressure function switch button (yellow light for pressure function, green light for positioning function)
8. Start button (zero indicator)
9. Stop button (high voltage output indicator)
10. Positioning mode frequency adjustment
11. Voltage regulation


The receiver


Function specification
A) Microammeter: indicates the size and direction of the signal
B) Gear switch: "0" indicates off state;
"I" file can be used for step voltage test mode and receiving clamp test mode;
Suitable for the test environment with weak input signal (internal amplifier circuit);
"II" file can only be used in step voltage test mode;
Suitable for the test environment with strong input signal (no internal amplifier circuit);
C) Input: signal input interface, used to connect A frame or receiving clamp;
D) Adjustment: Adjust the amplitude of the input signal;
E) Zero: the reference basis for adjusting the signal in the "I" file mode; Does not work in "II" mode;

A-frame and high voltage output cable



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Technical parameter
 

Power supply	220V(1±10%),50Hz(1±5%)
Output voltage	0~10kV(Square wave)
Output current	max 200mA
Output capacity	2kVA
Frequency adjust	Min:0.4Hz,Max:1Hz(range adjustable)

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Working principle

1. positioning function
The 220VAC power supply input from the power grid is converted into a high-power special signal required for identification by full wave rectification. This signal is added to the unpositioned cable through the connection line. The cable fault can be accurately fixed by measuring "step voltage method" or "current method".

2.  withstand pressure function
Switch the function key to the voltage withstand function, you can output 0-10kV voltage, and perform voltage withstand test on the cable.


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Application onsite

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Welcome you contact us for more service~

 

Our team