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QHWK8 series constant current contactless magnetic power security control cabinet


The series of electronic control equipment for DC lifting electromagnet provides DC power for the contactless blackout magnetic rectification control equipment, mainly used for hoisting coil, steel plate, steel ingot, steel scrap, steel slag and spare part materials.


The series of electronic control equipment adopts contactless control technology, implement of electromagnet excitation, demagnetization control without contact, and a blackout magnetic function; it can sample current flow, control of the current output, make sure the power of electromagnet (suction) is not affected by temperature. Standby power cut by DC contactor, action time is short, high safety coefficient.


The contactless control cabinet is the four quadrant without circulation controller. When in suction, the system works in the first quadrant, output positive excitation current. When in discharge function, working first in the second quadrant, the electromagnetic sucker stores energy feeding to the power network. Then in the third quadrant, the output reverses degaussing electric current, eliminating the remaining electromagnetic, leaving the absorbed material being completely put down. The final work in the fourth quadrant, reverse degaussing process electromagnetic sucker stored energy feedback to the power network.

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