XHSC-60Q Digital Bridge Cable Sheath Fault Locator | Cable Fault Locator
XHSC-60Q is a digital bridge cable fault pre-locator with an integrated intelligent burn-through bridge. In burn-through mode it delivers a rated 60kV output with a maximum arc current of 400mA to reduce high-resistance faults, while the digital bridge provides a maximum test current of 750mA for accurate bridge and cross-section ranging of cable sheath and near-end faults.
Designed For: Cable sheath and outer jacket fault location teams, urban distribution and ring-main cable maintenance crews, cable jointing and termination contractors, and electrical test engineers who need a no-blind-zone digital bridge to measure sheath faults and near-end faults in short and medium length cables.
Key Specifications
| Parameter |
Specification |
| Model |
XHSC-60Q |
| Product Type |
Digital bridge cable fault pre-locator / intelligent burn-through bridge |
| Intelligent Diagnosis Output Voltage |
0 – 60 kV DC, negative polarity |
| Intelligent Diagnosis Max Output Current |
30 mA |
| Burn-Through Output Voltage |
0 – 60 kV DC, negative polarity |
| Burn-Through Max Output Current |
400 mA |
| Bridge Mode Output Voltage |
0 – 4 kV DC, bipolar |
| Bridge Mode Max Output Current |
750 mA |
| Positioning Accuracy |
±(0.1% · L + 1) m |
| Display |
320x240 dot matrix LCD, viewable in sunlight |
| Fault Ranging Range |
1 – 50000 m (cable length 0 – 50 km) |
| Power Supply |
100V-240V, 50/60Hz |
| Power |
Maximum 2 kVA |
| Operating Ambient Temperature |
-10℃ to +55℃ |
| Working Environment Humidity |
≤90% |
Core Features
Digital bridge method locates cable sheath and near-end faults with no blind zone, unlike the wave reflection method.
Fully automated testing with one-click operation and automatic cable fault type diagnosis.
Automatically detects whether the wiring is correct and includes protective grounding detection.
Automatic data storage keeps up to 100 bridge and cross-section records for easy review.
Digital power supply control results in a more stable output voltage and current.
Wide voltage input range, while the test sample is automatically discharged.
Wheeled trolley chassis design makes the instrument lightweight and easy to carry.
High output voltage and large current make it suitable for insulation fault pre-location in long, large-section high-voltage cable systems.
Bridge Mode & Cross-Section Mode Ranging
Mode Selection Principle
Bridge mode is selected when the cable length is known and the auxiliary phase has the same cross-section, material and length as the faulted phase, with a low-resistance short-circuit at the far end. Cross-section mode is selected when the cross-section and material are known but the cable length is not, and the auxiliary phase may be any core.
Bridge Mode
Enter the cable length (0 to 50 km) and set the test current, then press the high voltage button. The instrument automatically closes the high voltage and discharges the cable, and the fault distance and percentage are shown on the screen.
Cross-Section Mode
Enter the cable cross-section and material and set the test current; the cable length may be left at 0m if the total length is unknown, in which case only the percentage shows “--”. The fault distance is then displayed on the screen.
Output Current Setting
The bridge output current can be set from 20mA to 750mA. From 20 to 75mA the output voltage is 4000V; from 80 to 400mA the voltage follows V × I = 300W; and from 410 to 750mA the output voltage is 400V.
Bridge Accuracy Verification
A bridge test box is supplied to check the bridge accuracy. Under low sensitivity the bridge reading should be 33.3%, and under high sensitivity it should match the value shown on the test box panel; if there is no large deviation the bridge is in order.
FAQ
Q1: Who is the XHSC-60Q digital bridge designed for?
It is designed for cable sheath and outer jacket fault location teams, urban distribution and ring-main cable maintenance crews, cable jointing and termination contractors, and electrical test engineers who need a no-blind-zone digital bridge to measure sheath faults and near-end faults in short and medium length cables.
Q2: When should bridge mode or cross-section mode be used?
Bridge mode is used when the cable length is known and the auxiliary phase has the same cross-section, material and length as the faulted phase. Cross-section mode is used when the cross-section and material are known but the cable length is not, and in this mode the auxiliary phase can be any core.
Q3: How does it handle high-resistance sheath faults?
Once the intelligent diagnosis shows a high-resistance or unstable fault, the burn-through function with a rated 60kV output and up to 400mA arc current converts it into a low-resistance fault. When the current becomes stable, bridge or cross-section ranging is then performed.
Q4: What is the ranging accuracy and does it have a blind zone?
The fault ranging range is 1 to 50000m with a positioning accuracy of ±(0.1% · L + 1)m. Compared with the wave reflection method, the bridge method has no blind zone, making it ideal for short cables and faults near the cable ends.
Q5: How is the bridge accuracy verified and what currents are supported?
A bridge test box is supplied to verify the bridge accuracy: under low sensitivity the reading should be 33.3%, and under high sensitivity it should match the value shown on the test box panel. The bridge output current can be set from 20mA to 750mA with automatically matched output voltage.
All English version available, please contact us for more photos.
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