Independent cable testing and diagnostics to verify the integrity of new and existing HV and LV cables in Singapore. We perform VLF (Very Low Frequency) withstand testing, DC Hi-Pot testing, Partial Discharge (PD) diagnostics, Tan Delta (dissipation factor) testing and Insulation Resistance (IR) testing — for commissioning, condition assessment and fault investigation across the Singapore power distribution network. Why choose SG Cable Specialist Full diagnostic suite under one team VLF, Hi-Pot, Partial Discharge (PD), Tan Delta and IR — comprehensive cable diagnostics under one contract, no juggling multiple specialists. Calibrated test equipment Up-to-date calibration certificates supplied with every test report. Clear acceptance criteria Tests run against IEEE 400.2 and manufacturer specifications, with pass/fail reporting. Pre-energisation & maintenance testing Commissioning tests for new cables and condition-based PD/Tan Delta diagnostics for ageing assets. 1 Test plan & isolation Agree test type, voltage and duration; coordinate isolation and earthing. Test plan & isolation Agree test type, voltage and duration; coordinate isolation and earthing. 2 Insulation resistance test IR test as a first-pass health check before applying higher voltage. Insulation resistance test IR test as a first-pass health check before applying higher voltage. 3 VLF withstand & Hi-Pot test Apply withstand voltage per IEEE 400.2 or manufacturer specification. VLF withstand & Hi-Pot test

Apply withstand voltage per IEEE 400.2 or manufacturer specification. 4 PD & Tan Delta diagnostics Partial Discharge mapping and Tan Delta (dissipation factor) measurement to assess insulation condition and locate weak points. PD & Tan Delta diagnostics Partial Discharge mapping and Tan Delta (dissipation factor) measurement to assess insulation condition and locate weak points. 5 Report & recommendations Detailed test report with measurements, trends and remedial recommendations if needed. Report & recommendations Detailed test report with measurements, trends and remedial recommendations if needed. Frequently asked questions VLF (Very Low Frequency) testing applies an AC voltage at 0.1Hz to stress the cable insulation and detect defects, without the over-stressing risks of DC testing on XLPE cables. Yes. We perform on-site Partial Discharge testing and PD mapping on HV cables and accessories to detect insulation defects, poor joints and terminations before they fail in service. Tan Delta (dissipation factor) testing measures the dielectric loss of the cable insulation to assess overall ageing and water tree degradation. It's commonly used for condition assessment of medium-voltage XLPE and PILC cables. Hi-Pot testing is typically done on commissioning and after major repair works to confirm the cable's dielectric strength. Yes — IR testing is included as a baseline health check before higher-voltage VLF, Hi-Pot or PD/Tan Delta tests. Yes. Our test equipment covers the full Singapore HV distribution range up to 22kV. Related services Need a certified cable jointer in Singapore? Speak to our team for a fast quotation on cable testing & diagnostics in singapore .