Cable Fault Locating Device

Underground Cable FaultNo Chinese content provided. Please provide the news content to be translated.. CorrectFixed Point

    The determination of fault points in buried cables requires two steps: Firstly, use a cable fault tester to measure the length from the cable's measuring end to the fault point, commonly referred to as preliminary localization. Then, utilize a positioning instrument to determine the precise ground location of the fault point, commonly referred to as...Please provide the Chinese content to be translated.. ConfirmDetermine.Please provide the Chinese content to be translated.. Indeed定点 requires applying a high-voltage shock to the cable end, using a digital synchronous positioning instrument to detect the electromagnetic and acoustic waves emitted during the spark discharge of cable fault points. The ground below where the acoustic wave peaks and the digital display's readings are low indicates the location of the cable fault.Please provide the Chinese content to be translated.. SureLocation.

Cable Fault Location with Additional Impulse High Voltage Wiring Diagram

    Underground cable failureNo Chinese content provided for translation.No Chinese content provided, original return: .确At the point of termination, an impulse high-voltage wiring diagram is added to the cable end as shown.Figure 1 shown.

2 Fixed-point receiver wiring

Connect the headphones to the output jack on the digital synchronous positioning instrument panel, and then connect the vibration sensor to the input jack on the back panel of the digital synchronous positioning instrument.The "Setpoint/Path" switch is set to "Setpoint." Rotate the volume knob on the digital sync setpoint instrument panel clockwise.

3 Fixed-point Methods and Techniques

Firstly, the fault point's nearby cable should be identified through path detection.Please provide the Chinese content to be translated.. ConfirmedTowards. Then, connect the impulse high-voltage generator to perform high-voltage impulses on the faulty cable.(The shock voltage should be sufficient to ensure complete breakdown and discharge at the fault point), place the sound vibration sensor probe directly above the cable at the ground distance corresponding to the test end data of the predicted fault point, connect the power supply, and set the point/path to "Point." Listen to the vibration waves through the headphones while observing the distance display screen. Each time a shock discharge is heard, the distance display screen counts and refreshes once, displaying a large number of 100, and continuously move the probe along the path every 50 centimeters above the cable until the vibration wave sound of the fault point is heard. When the vibration wave sound is strong enough, the display screen will show the straight-line distance from the fault point to the vibration sensor. At this point, move the vibration sensor forward, backward, left, and right to find the location with a smaller digital value and a louder vibration sound, which is the fault location.Please provide the Chinese content you would like translated.No Chinese content provided, nothing to translate.In situations where it's difficult to distinguish between environmental noise and the vibration waves of a fault point due to low sound levels, the noise suppression switch can be turned on. When the shock high-voltage generator is not discharging, the digital synchronous positioning instrument cannot receive shock electromagnetic waves, and the sound channel remains closed, achieving...Absolute. Please provide the Chinese content you would like translated.Quiet the noise. Once the shock high-voltage generator discharges, the electromagnetic waves simultaneously activate the counting and sound channels until the vibration wave sound of the fault point is heard. Move the vibration sensor forward, backward, left, and right to find where the digital reading is small and the vibration sound is loud; this is where the fault is located.Please provide the Chinese content to be translated.. SureThis placement eliminates environmental noise interference and significantly enhances pinpointing efficiency.

Cable Burial Path Measurement

    Locating the burial path for underground cables is a primary step in cable fault testing. At the cable ends, additional...15KHz modulated current signals are received by a digital synchronous positioning receiver above the cable to capture the electromagnetic waves radiated by the 15KHz current signal. After amplification and demodulation, the audio signal is sent to headphones, and the operator determines the burial path of the cable based on the sound heard through the headphones.