線 Cable Testing Services
Modern industrial operations and underground utility systems rely entirely on the continuous performance of power and control cables. Tucked inside dense concrete trays or buried directly underground, these lines are constantly exposed to moisture, soil shifts, and electrical spikes.
Our cable testing laboratory provides highly precise electrical and material evaluations for low, medium, and high-voltage transmission lines. Our specialized testing routines provide project managers, builders, and cable producers with clear assurance that their lines can deliver continuous power.
🔍 Core Testing Methodologies
- Very Low Frequency (VLF) High-Potential Testing: Applying energy-efficient 0.1 Hz sinusoidal wave potentials to identify hidden insulation punctures without creating additional stress on cables.
- Partial Discharge (PD) Cable Mapping: High-frequency inductive sensors capture minuscule internal tracking signals, calculating the exact meter location of structural insulation faults.
- Conductor DC Resistance Tracking: Micro-precision digital evaluation of inner copper/aluminum cores to ensure compliance with transmission line limits.
- Insulation Resistance & Polarization Index: Long-duration high-voltage DC tracking to calculate material polarization rates, exposing hidden moisture entry paths.
🛠️ Specialized Engineering Features
- ✔ Sheath Integrity Testing: Voltage stress mapping of outer protective PVC jacket layers to track down stone punctures or installation wear.
- ✔ Tensile & Elongation Material Profiling: Destructive physical pull testing of raw polymer insulation layers to guarantee structural durability.
- ✔ Accelerated Ageing Simulations: Hot oil immersion, chemical exposure testing, and ozone exposure profiling to evaluate long-term cable decay paths.
- ✔ Pre-Commissioning Audits: On-site and lab-integrated data tracking satisfying international IEC 60502 and ICEA performance directives.