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Recent content by AlBerton

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    Switchgear busbars sizing

    Thank you all for all the replies, I will be more specific, it's not theoretical, it was an example suitable for several cases. In this one, I have to make a preliminary study to get a budgetary quotation for a new plant that will receive power on a new 11 kV SWGR with Busbar A-Bus tie-Busbar B...
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    Switchgear busbars sizing

    Hello, thanks for your contribution. Yes, probably some switchgear manufacturer would be the more indicated person. By the way, the main bus can handle all the load; the point is that with several generators in parallel, whatever section of the bus bars you consider, it will never be crossed...
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    Switchgear busbars sizing

    I thought this was a place where professionals could discuss, but looks like someone has time to waste trying to be witty...
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    Switchgear busbars sizing

    Hello, imagine to have a switchgear with a double busbar and a bus tie NC. Connected to it, there are 4 generators each capable of generating 100 amps, working in parallel, and 8 motors whose FLC is 50A. In normal condition every section of the busbar is crossed maximum from 50A (in green in the...
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    Fencing Question

    The method that waross suggested above works, the ratio is that in case of fault your hand(s) and your feet will be at the same potential. If it's indoor, you have the same result if the slab concrete reinforcement iron bars are connected to the grounding system and you connect the fence to...
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    Incoming device as Disconnector Switch / Isolator

    Yes it can be a disconnector switch, but it shall be backupped from the upstream CB, meaning that in case of short circuit the upstream CB shall let pass an amount of energy below the maximum acceptable for the switch disconnector (without being damaged). Every manufacturer has its own...
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