We offer specialized services for detecting, pinpointing, and repairing faults in underground Low Voltage (LV) and High Voltage (HV) cable networks. Our approach combines advanced diagnostic tools with skilled technical expertise to restore power quickly, safely, and reliably.
1. Fault Locating
Preliminary Diagnosis: Using fault indicators, system records, and visual inspections to determine the fault type (open circuit, short circuit, insulation breakdown, earth fault, etc.).
Advanced Testing Methods:
Time Domain Reflectometer (TDR) testing to locate faults accurately.
High Voltage Surge Generator (Thumper) for pinpointing breakdown locations.
Insulation Resistance and Sheath Testing to assess cable condition.
Mapping & Marking: Identifying exact fault coordinates on-site to minimize excavation areas and reduce restoration time.
2. Cable Excavation & Exposure
Controlled excavation to access the damaged section of the cable while minimizing disruption to surrounding infrastructure.
Ensuring safe working conditions through cable isolation, grounding, and adherence to safety regulations.
3. Repair Works
Removal of the faulty section or damaged joints.
Preparation of cable ends, insulation stripping, and jointing according to manufacturer specifications.
Use of heat shrink, cold shrink, or resin joints depending on voltage level and environmental conditions.
4. Post-Repair Testing
High Voltage withstand tests to ensure insulation integrity.
Continuity and phase rotation checks for system correctness.
Detailed test reports for project documentation and compliance.
5. Reinstatement
Proper backfilling and compaction of excavated areas.
Restoration of surface finishes (road, pavement, or landscaping) to original condition.
Benefits of Our Service
Rapid fault detection minimizing power downtime.
Specialized test equipment for precise and non-destructive fault location.
Skilled repair teams with experience in both LV and HV underground networks.
Compliance with IEC, IS, and relevant safety standards.