Intelligent Burn Through Bridge 60kV 400mA Cable Fault Locator for Railway Metro Traction Power Cable | XHSC-60Q

Railway and metro traction power cables run long, large-section routes through tunnels, bridges and cross-bonded sections, often terminated at GIS switchgear. The XHSC-60Q was designed for exactly these systems: its 60kV burn-through with up to 400mA arc current converts high-resistance and flashover insulation faults into measurable low-resistance faults, and the 750mA digital bridge and cross-section modes then deliver the fault distance with ±(0.1%·L+1)m accuracy over up to 50km, without dismantling GIS terminations or opening cross-bonding links.

• Pre-locates faults on long, large-section traction cables up to 50km without dismantling GIS switches or shorting cross-bonding links
• 60kV negative DC burn-through with 400mA arc current handles the tough high-resistance and flashover faults found on aged track-side cables
• Bridge and cross-section modes with up to 750mA test current deliver stable readings on high-capacitance large-section cables
• No blind zone: reliable on short tunnel cables and faults near terminations where reflectometry struggles
• Intelligent diagnosis decides automatically whether to burn through or range directly, guiding less-experienced shift crews
• Automatic discharge and emergency stop, plus protective-earth detection, meet strict rail site safety practice
• Sunlight-readable display, 100-record history and USB firmware upgrade simplify depot maintenance
• Wheeled trolley case (22kg, IP54) moves easily along platforms, tunnels and cable routes

Instead of guessing the fault nature first, the XHSC-60Q runs an automatic intelligent diagnosis at up to 60kV and tells you exactly what to do next. This is how the built-in workflow decides the fastest route to the fault distance:

In burn-through mode the unit outputs up to 60kV with a 400mA arc current to carbonize high-resistance and flashover faults into stable low-resistance faults. With the intelligent burn-through function enabled, the test stops automatically as soon as the fault impedance drops to the level required by the ranging modes, instead of running the full preset time. The bridge accuracy can be verified on site with the supplied bridge test box (33.3% reference line) whenever a suspicious reading appears.

• One-key automatic operation: the unit diagnoses, burns and pre-locates without complex menu work
• Automatic wiring check with protective-earth detection prevents unsafe starts
• Automatic discharge at test end; emergency stop button cuts HV output instantly
• Up to 100 history records stored for bridge and cross-section results
• 320x240 dot-matrix LCD readable in direct sunlight