Cable Digital Burn Through Bridge

The XHSC-60Q Cable Digital Burn Through Bridge is an integrated high-voltage diagnostic instrument combining 60kV burn-through capability with a high-precision 750mA intelligent digital bridge. Engineered specifically for mining operations, tunneling projects, and heavy industrial maintenance contractors, it excels in environments where cables are subjected to extreme mechanical stress, moisture ingress, and operational abuse — conditions that frequently produce complex high-resistance faults requiring both powerful burn-through and micro-level fault pre-location accuracy.

• Dual-Mode Operation: Burn-through mode delivers 60kV / 400mA for rapid high-resistance fault carbonization; intelligent bridge mode outputs 750mA for ultra-precise fault distance measurement.
• 750mA High-Precision Bridge: Industry-leading bridge current ensures accurate pre-location even on severely degraded cables with complex fault signatures — minimizing excavation footprint in confined mine galleries and tunnels.
• Intelligent Digital Control: Microprocessor-governed regulation with real-time LCD monitoring, one-touch mode switching, and automatic safety lockout during high-voltage operations.
• Compact & Rugged Design: Portable pull-rod plastic case construction suitable for transport through narrow mine shafts and tunnel access points. Built to withstand dusty, humid, and vibration-prone industrial environments.
• Wide Cable Compatibility: Suitable for high-voltage, large-section, long-distance complex cable systems — including armored, sheathed, and cross-interconnected configurations common in mining and tunneling infrastructure.
• No Blind Spot: Unlike wave reflection methods, the bridge method provides accurate fault location even on very short cable sections and near-end faults — critical for confined-space installations.

• Underground Mining: Diagnostics on high-voltage feeder cables powering continuous miners, longwall shearers, conveyor systems, and ventilation fans — where cable damage from rock falls and equipment traffic is routine.
• Tunnel Boring & Construction: Fault pre-location on TBM trailing cables and site distribution networks, enabling targeted repairs without disrupting advance rates.
• Heavy Industrial Plants: Steel mills, cement plants, chemical processing facilities — environments where buried cables face thermal cycling, corrosive atmospheres, and vibration-induced degradation.
• Third-Party Testing Services: Independent electrical testing contractors offering cable diagnostic services to mine operators, construction firms, and industrial facility managers.

The XHSC-60Q operates in two complementary modes. In burn-through mode, a controlled 60kV DC output carbonizes the high-resistance fault point, reducing impedance from potentially hundreds of kilo-ohms to single-digit ohms. Once the fault is converted to low resistance, the 750mA intelligent digital bridge precisely measures the distance to the fault using the Murray loop principle — achieving ±(0.2%·L+1)m accuracy without the blind-spot limitations of pulse reflection techniques. This dual-mode workflow ensures reliable fault pre-location even on the most challenging cable systems found in mining and heavy industrial environments.