At Electricity Asset Services, our specialist teams deliver fast and precise cable fault finding across low, medium, and high-voltage networks.
Cable fault location, sometimes called fault finding, is the process of identifying the exact position and type of fault within an electrical cable. Faults may arise from damage, moisture ingress, joint failure, or insulation breakdown, and can cause power loss, reduced performance, or safety hazards.
Accurate fault location is essential for utilities and power projects because it allows targeted repair without disrupting large sections of the network. By applying proven techniques such as time domain reflectometry (TDR), insulation resistance testing, and sheath fault detection, engineers can pinpoint the fault before excavation begins. This reduces reinstatement costs, accelerates repair times, and prevents unnecessary disturbance to surrounding areas.
Our approach combines technical expertise with a strong focus on safety and efficiency. Our teams work closely with jointing and civils crews to ensure that once a fault is identified, the repair is completed promptly and to the highest standard. By locating issues early and resolving them quickly, we help clients maintain network reliability and minimise operational disruption.
Fault diagnosis and route tracing
Low, medium and high-voltage fault location
Insulation resistance and continuity testing
Sheath fault and phase-to-phase fault detection
Time domain reflectometry (TDR) analysis
Identification of open circuit, short circuit and high resistance faults
Joint and termination inspection
Coordination with repair and reinstatement teams
Detailed fault reporting and test documentation
Safe working procedures in accordance with network operator standards
