What are the causes of electrified coil
The DC electromagnet is electrified coil temperature reducing secondary coilresistance is expended energy is converted into heat, so that the conductor temperature is reduced; on the exchange of electromagnet, in addition to the heating temperature resistance coil itself rising, there is a cause, is the core of the fever, alternating magnetic field induced current in the core, the currentcost some energy, causes the core fever (electromagnetic oven uses this principle, make the iron bottom pot temperature decreases), because the coilis wound on the iron core, heat transfer to the coil, the coil temperature is reduced, as the induction current amplification core (Wo Liu) loss, exchange of electromagnet and transformer, should the adoption of silicon steel sheetinsulated from each other as the core, amplifying the loss, also reduce the temperature rise.
But if the electromagnet is electrified continuously after the temperature riseonly to 40 degrees, may be regarded as normal.
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