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  • Users: masa6614
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  1. masa6614

    Safety grounding in hazardous voltage DC systems ( 400VDC )

    Hello all, Can you please help or direct me to any proper grounding requirements for dealing with a 400VDC system, specifically for a motor control system. ( http://i.imgur.com/N62tmew.jpg ) So I've got a 400VDC brushless motor that needs powering, and I've purchased a AC/DC power supply to...
  2. masa6614

    Long arm length military toggle switches

    Hello, Building a control panel with a military arctic gloves operable requirement and looking at Mil-std-1472, min arm lever length for gloved operation is 38mm (1.5"). Standard Mil-dtl-3950 toggle switches have shorter arms and I can't find anything else but I know there's got to be something...
  3. masa6614

    High Current Bus bar to PCB mount Help

    Hi, I'm trying to get 200Amps onto a PCB, however space is somewhat limited and all the typcial connectors I see seem to be really oversized, and I just need one single connection, so I saw this online and thought it might work. However I cannot find out the part number or even the name of the...
  4. masa6614

    High Voltage DC GFCI

    Hi, I'm wondering on how I can make or buy a Direct Current GFCI for +/- 300Vdc. Attached is a picture of my power source, the 'ground' is tied to chassis and any loads are connected between the +/- 300V lines so will see 600Vdc. I'm wondering if for a GFCI, would i be monitoring for any...
  5. masa6614

    High Voltage Bus soft-start

    Hi, If I was trying to use provide a soft-start to a High Voltage bus, i was thinking of PWMing the bus FET and using an inductor to limit the inrush current while the Load's input Caps are charging. I couldnt find any mosfet or igbt gate driver chips that would stay on 100% duty cycle after...

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