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  • Users: JGFB
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  1. JGFB

    Wound Rotor Dynamic Braking Control

    Thank you for the post. As a junior engineer, I'm not solely responsible for this. I have many engineers above me to check this work. I am just trying to gain a better understanding of the this type of system so that I can at least be in the same frame of mind as my superiors throughout the...
  2. JGFB

    Wound Rotor Dynamic Braking Control

    The main brake is on the hoist drum and is hydraulically released, spring applied. The pinion brake is hydraulically released and applied by gravity (i.e. weights). Since the mechanical brakes are only supposed to be used in emergency situations and once the conveyance comes to rest it didn't...
  3. JGFB

    Wound Rotor Dynamic Braking Control

    I am a junior engineer working on the dynamic braking circuit of a 3PH 1000HP 440RPM 4160V (Stator) 590V (Rotor) Wound Rotor Hoist with 8 steps in the rotor circuit for speed control. The operator panel uses a two direction joystick with a push button on the handle. One direction is for...

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