Cable Fault Tester Accurately Locating Underground Cable Faults In Mining/Construction Sites/Agriculture

Description:

The low voltage concealed cable tester is a special instrument used by power, broadcasting, post and telecommunications departments, as well as industrial and mining, and rural areas to find underground cables, including direct buried armored cable lines and underground line faults. It can detect the direction of the underground line , the more accurate underground position, the basic buried depth, and various ground leakage faults, broken core faults, including lines under paddy fields, cement roads, bricks and stones, asphalt roads, and lines in the walls of buildings. Waterproof lines and cables used on the ground can all be detected by using this instrument through appropriate methods.

The fault detector consists of a signal transmitter, a signal receiver, a probe, a plug and other parts. The transmitter and receiver are small in size, reasonable in structure and beautiful in appearance. The instrument has the advantages of high sensitivity, strong anti-interference ability of the sound meter synchronization, convenient operation and carrying, and rapid and accurate fault point location. The receiver and the sound meter are synchronized, with high and low sensitivity settings. The transmitter is equipped with output indication and KΩ measurement function, which can replace the multimeter or megohmmeter to check the circuit's continuity, disconnection and mixing, measure the size of the ground leakage resistance, and directly determine the nature of the fault. The transmitter is equipped with an output terminal "Output 2" , which broadens the detection method and function.

Main technical performance:

1. Transmitter The transmitter panel is equipped with "power switch", "power indication"; "output selection", "high, medium, low"; "output indication" and "KΩ measurement" switching switches, and the indicator light indicates the switching position; "output·KΩ measurement" shares one output terminal, which is switched by the "output·indication" and "KΩ measurement" switches; set "output 2" output terminal; square meter head indicates output and KΩ resistance value. It can check whether the line is on, off, mixed, and measure the size of the ground leakage resistance.

1.1 Output signal form: pulse period 1.34 ± 0.15mS.     Width 0.2± 0.1mS intermittent period 1.8 ± 1S.

1.2 Output voltage: Pulse period Upp high range is greater than 1000V , medium range is greater than 60V, and low range is greater than 30V.

1.3 KΩ measurement can check the side line on, off, mixed leakage group size, determine the nature of the fault.

1.4 The output terminal of "Output 2" can output a peak pulse short-circuit current of 1-5A .

1.5 Output power: Pulse power is greater than 2.5W (when the high-end load resistance is 80KΩ).

1.6 Power supply: 8.4 V.

2. Receiver (signal receiver)

With power switch, power indicator, "high gear" and "low gear"

Switch; when there is a signal on the meter, it indicates the positive or negative direction; there is an input terminal on the upper side, which can be inserted into the probe or rod socket respectively.

2.1 Received signal form: pulse period 1.36 0.15mS,      Width 0.2  0.1mS, intermittent period 1.8 1S.

2.2 Power supply: 6V (4 AA batteries)

3. Fault detection range and detection accuracy

3.1 When the detection length is 3km, the burial depth is 2m, the short circuit to the ground, and the leakage resistance of the leakage fault is less than 500kΩ, the interpolation positioning error is less than 0.2m.

3.2 When detecting a broken core fault in an underground cable with a length of 1 km and a depth of 2 m and good insulation to the ground, the positioning error is less than 0.4 m.

3.3 The actual detection length can exceed 1-5km for lines with a buried depth of 2-3m.

4 .Anti-interference performance: The received signal is clear and can detect underground wire faults under 220 kV lines.

5. Instrument working conditions: This instrument can work continuously in an environment with an ambient temperature of -15°C and an atmospheric pressure of 86-108Kpa.

Packing list