In industrial projects, power cables act as the “veins” of energy transmission. Choosing the wrong cable can lead to equipment failures, safety hazards, and skyrocketing costs. This guide breaks down the 5 critical factors to evaluate when selecting industrial cables, combining technical specifications with real-world scenarios. 1. Ampacity: The Cable’s “Traffic Capacity” Definition: The maximum current a cable can safely carry without exceeding temperature limits. Why It Matters: Underrated cables overheat, accelerating insulation degradation or even causing fires. Overrated cables waste budget on unnecessary capacity. Selection Tips: Calculate ampacity based on peak current demand using IEC 60287 standards. Apply ambient temperature correction factors (e.g., derate cables in high-temperature environments). 2. Voltage Rating: Match System Requirements Definition: The maximum operating voltage a cable can withstand (e.g., 0.6/1kV, 6/10kV). Common Pitfalls: Ignoring transient overvoltages (e.g., motor startup surges). Overlooking differences between AC and DC applications. Recommendation: Select cables with a voltage rating 20% higher than the system’s maximum voltage. Apply ambient temperature correction factors (e.g., derate cables in high-temperature environments). 3. Environmental Resistance: Right Material for Right Conditions Cables may face extreme temperatures, chemicals, or mechanical stress. Match materials to the environment: High Heat: Choose cross-linked polyethylene (XLPE) insulation. Moisture/Chemicals: Opt for...
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