The XFH-JKX Overhead Line Fault Location Device for Low Current Grounding Faults is designed for overhead lines in low current grounding systems. It can accurately locate the grounding point after a single-phase grounding fault has caused the line to be shut down.

The XFH-JKX is a portable device for fault location on multiple lines. The complete set consists of a transmitter (XFH-FS), sensors (XFH-CG), a receiver (XFH-JS), and accessories. After a fault line is out of service, the transmitter applies ultra-low-frequency high-voltage signals to the line to reproduce the fault. Sensors are hung on the line using insulating rods along the route to detect signals, and data is transmitted to the ground receiver wirelessly. The receiver then displays the measurement results. Before the fault point, current is continuous; after the fault point, current disappears. This allows for initial rough segmentation, followed by precise pinpointing, enabling quick determination of the fault location.

Feature Highlights

Applicable to small current grounding distribution systems, it detects various faults such as single-phase metallic grounding, arc grounding, and resistance grounding through transition.

2. Positioning post-line shutdown, especially suitable for fault lines with cable branches.

3. Applying high-voltage signals to reproduce the fault, the current signals are stable and easy to detect.

4. Ultra-low frequency signals avoid the impact of system distributed capacitance, enabling precise location of high-resistance faults.

5. Transmitter Safety Features: High-voltage start interlock function, direct short-circuit output allowed.

6. Utilizing high-sensitivity sensors, the design features an open configuration that requires no closure, facilitating easy attachment to the line.

7. Wireless communication transmission between sensors and receivers is secure and reliable.

8. The transmitter can be powered by municipal electricity or a generator, while the sensors and receiver are powered by dry batteries.

9. The transmitter is compact and lightweight; the sensors are designed for minimized size and weight, making them easy to hang along the line; the receiver is designed as a handheld unit.

The receiver features a large LCD screen displaying sensor status, current waveforms, and current values.

Technical Indicators

Positioning Accuracy: 0.2 meters.

2. Transmitter Output Characteristics:

(1) Output frequency: 1 Hz

(2) Open Circuit Voltage: Fundamental wave RMS 0~2800V

(Pulse DC, peak 8kV, equivalent to the phase voltage peak of a 10kV line)

Short-circuit Current: Fundamental frequency RMS 0~35mA (Pulsed DC, Peak 100mA)

The wireless communication distance between the sensor and receiver: not less than 30 meters.

4. Transmitter Power Supply: AC 220V municipal power, compatible with generators (output power ≥ 1500W).

Transmitter Power: High Power 900W.

6. Sensor Power Supply: 3 AA alkaline batteries.

Receiver Power Supply: 5 AA alkaline dry batteries.

8. Volume:

Transmitter: 455x335x310mm; Sensor: 180x100x35mm; Receiver: 205x100x35mm

9. Quality: Transmitter - 15kg; Sensor - 0.45kg; Receiver - 0.45kg

10. Usage Conditions: Temperature: -10℃ to 40℃, Humidity: 5-90% RH, Altitude: <4500m.