Series-wound DC motor drive speed test

!±8± Series-wound DC motor drive speed test

Here you see a "top speed" testing a series wound motor DC motor, which was used in an angle grinder 2kW (220V AC). Stator and rotor are connected to separate power source. Check out how the speed increases the stator current in the down position. They were high-speed resonant body brush arc start because of poor contact, thus avoiding self-destruction of the engine at higher speeds can withstand the mechanical design.

Series-wound DC motor drive speed test

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