中国矿山工程

As low-voltage installations are numerous and various in type and power in a certain plant, selecting 380V as the LV distribution voltage has a number of drawbacks: including overly short power supply distance, large cable demand, considerable distribution-induced power loss. In contrast, using 660V as the distribution voltage is conducive to reducing distribution power loss and non-ferrous metal usage, hence more environmentally friendly. The paper is a case study of the LV power voltage selection process. Using the flotation plant of a certain non-ferrous metal mineral processing plant as an example, the paper demonstrates the merits of using 660V as the LV distribution voltage, compares the 660V and 380V options, and also proposes some basic principles guiding the selection of 380V and 660V as LV distribution voltages.