In coreless induction melting systems, water is a major consideration for the cooling f power supplies and furnaces. The demand by coreless furnace manufacturers for high quality water has risen in order to maximize system reliability and component longevity. This has been due to the increased operating voltages of these melting systems and the fact that almost all of the power electric components are water-cooled. The life expectancy of these components are related to their operating temperature. This requires a new look at the selection, installation, and maintenance of the water-cooling systems. The water must be clean, since debris will create clogging in the small passages in the electrical parts. Water much be supplied continuously at he required differential pressure and rated flow for each piece of equipment. If the system is not a closed system, peak water demand in other parts of the plant must not deprive the equipment of water. Water much be supplied continuously at the required differential pressure and rate flow for each piece of equipment. If the system is not a closed system, peak water demand in other parts of the plant must not deprive the equipment of water. Water temperatures specified by the manufacturer must be monitored to make sure that they do not exceed the specified inlet and outlet temperatures. If too cold water is allowed to return to the system (cold temperature is defined as water temperatures lower than the ambient air temperature), condensation will then form on the electrical parts and the coil. If water forms on the electrical components or coil, the risk of arcing is increased.
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