XWA Power & Cable has unveiled a comprehensive five-point guide aimed at reducing cable procurement risks in international engineering, procurement, and construction (EPC) projects. The guidance, rooted in the company’s 17 years of overseas cable supply experience, addresses critical issues that can lead to supply discrepancies, failed acceptance tests, and commissioning delays. It targets EPC engineering and procurement teams working with medium- and high-voltage cables, as well as contractors dealing with low-voltage, control, and overhead conductor packages.
A key recommendation from the guide is the thorough verification of cable construction details before placing an order. XWA warns that incomplete cable descriptions can omit essential components such as semiconductive screens, metallic screening, and water-blocking arrangements, potentially leading to costly oversights. The company advises a meticulous layer-by-layer review of all cable elements, ensuring that every detail is clarified and approved prior to finalizing manufacturing instructions.
The guide also emphasizes the importance of choosing equivalent materials to avoid electrical and mechanical issues. XWA highlights differences between copper tape screen (CTS) and copper wire screen (CWS), noting that these variations can significantly impact cost and fault-current performance. Similarly, inappropriate armour choices can reduce the current-carrying capacity of cables, as seen in XWA’s analysis of single-core AC cables with magnetic steel armour.
Environmental factors play a significant role in cable performance, and XWA’s guide urges buyers to confirm water-blocking requirements and protective arrangements based on site conditions. The company references CIGRE findings that highlight insulation breakdown due to water-treeing as a major cause of failures in certain high-voltage cables, stressing the need for appropriate environmental protection measures.
Testing and documentation must align with specific project requirements, with XWA advocating for tests such as AC withstand tests, partial-discharge measurements, and lightning-impulse tests. The company coordinates with qualified partners to ensure that testing is conducted promptly after production, facilitating a seamless verification process.
Finally, XWA addresses the potential costs associated with procurement failures, including rejection, re-manufacturing, and commissioning delays. The guide encourages procurement teams to consider these factors when evaluating offers, ensuring consistency between designs, test records, and shipment documents. XWA’s international project experience underlines the importance of resolving technical ambiguities early to prevent costly setbacks.
joaquin Fan
XWA Power & Cable
+86 153 2498 1792
[email protected]
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