Dear sea friends, please share whether the breakdown of your silicon cores occurs under high voltage or low voltage, and whether it is with alternating current or direct current – each has its own disadvantages. .
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Dear sea friends, please share whether the breakdown of your silicon cores occurs under high voltage or low voltage, and whether it is with alternating current or direct current – each has its own disadvantages. .
High-voltage breakdown enables fast furnace startup and good quality, but it requires high-voltage-resistant electrodes and isolation materials for the chassis.
It’s probably high-voltage breakdown at this point; as mentioned above, high voltage results in a short duration of operation, rapid startup, and high requirements for insulation； The low-pressure preheating takes a long time; moreover, the preheating device has to be disassembled and reassembled, which is time-consuming and cumbersome.
Currently, many of the newly launched projects experience high-voltage breakdown; reducing the time taken for such breakdowns can increase the annual output per furnace. All of these systems use alternating current, with alternating current being used throughout most of the reduction process. A few companies in China employ direct current; alternating current is relatively easier to control, and it does not cause the core to melt due to the skin effect. Direct current operation is more complex, but it results in better power quality.