Underground Cable Testing & Diagnostics

Comprehensive Field Services According to IEC 60502, IEEE 400, and Industry Practices

We are a testing and diagnostics company providing advanced commissioning, acceptance, fault location, and condition assessment services for underground power cable systems. Our services follow international standards such as IEC 60502, IEEE 400, and related protocols—ensuring reliability, safety, and longevity of your cable assets.

Underground cables are critical but often invisible components of power networks. Proper testing during installation and periodic diagnostics are key to preventing failures, ensuring regulatory compliance, and avoiding costly downtime.

Scope of Services

1. Commissioning & Acceptance Testing

To verify cable integrity after installation and before energization:

VLF Withstand Test (Very Low Frequency, 0.1 Hz) – as per IEEE 400.2

VLF Tan Delta Measurement – to evaluate insulation condition

Time Domain Reflectometry (TDR) – for length and impedance profiling

Partial Discharge (PD) Detection (if applicable)

Insulation Resistance (IR) & Continuity Tests

Sheath Integrity Tests

2. Diagnostic Testing of In-Service Cables

To assess aging cables and plan predictive maintenance:

VLF Tan Delta & Capacitance Measurement

Partial Discharge Testing (Offline or On-line)

Sheath Fault Location & Monitoring

Insulation Resistance & Leakage Current

Temperature Profile & Load Mapping (Optional)

3. Fault Location Services

When failure occurs, we provide rapid location services using:

ARM (Arc Reflection Method)

TDR (Time Domain Reflectometry)

Thumper/Surge Generator

Sheath Fault Location via Bridge or Step Voltage Method

Pinpointing using Audio Frequency and Electromagnetic Detectors

4. Sheath Testing & Monitoring

DC Voltage Withstand Test of Cable Sheath

Measurement of Sheath Resistance

Localization of Sheath Defects

5. Reporting & Documentation

Each service includes a detailed report featuring:

Test Results

Compliance Summary with IEC/IEEE Standards

Cable Condition Assessment

Fault Distance/Location (if applicable)

Maintenance or Replacement Recommendations

Standards We Follow

IEC 60502 – Power cables with extruded insulation

IEEE 400, IEEE 400.2, IEEE 400.3 – Guide for Field Testing and Evaluation

IEC 60229 – Tests on cable outer protection

Industries We Serve

Power Utilities

Renewable Energy Projects

Industrial Plants

EPC Contractors

Oil & Gas Facilities