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  1. tintin75

    Field wiring bypassing terminal blocks after incident ( Industrial Board in EU)

    Dear all, A newly commissioned cubicle had some terminals burn and cables melt on the LV supply (seemingly due to faulty connection at push-in terminals) The contractor simply cut back the damaged field cable and terminated the wires directly. In the case of the active, fitting it into a...
  2. tintin75

    Substation Availability Factor (Industry trends)

    Greetings! I note most substation availability figures come in at around 98-99% QUESTIONS What would be typical Availability targets written into OM contracts for various substation types/uses? (primary interest in renewable energy substations both MV and HV) Bonus/Malus incentives - by my...
  3. tintin75

    Concrete floor smoothness for racking trollies

    Dear all, To specify an MV substation floor that will have rack-in switchgear (requiring a trolley), is there a standard or some quantifying method I can use for how smooth the surface is to be described? Obviously I could write, "the floor surface shall be smooth" or "resin coating shall be...
  4. tintin75

    MV Switchgear Layout & Nomenclature

    Thank you . You making the distinction between a pictorial and a single line diagram is valuable for me. Yes, there is a vertical line through H01 with bus as like you said. They have a broken grey line around each part of the switchgear that to me, made it somewhat pictorial and hence my...
  5. tintin75

    MV Switchgear Layout & Nomenclature

    Dear all, I am working with a newly commissioned MV/HV windfarm transmission substation that, to me, has a rather strange and arguably dangerous panel nomenclature. I hope to have some opinions from both designers and those in O&M The SLD depicts a layout for panels H01 - H08 running...
  6. tintin75

    Cowboy Coffee process optimisation

    dear coffee drinkers, Could you describe what process is in play when pouring cold water into a brew of coffee forces the grounds to the bottom of the pot? Does ph have any effect on the process? I wish to perfect this method through experimentation so if you have any tips.... (this is serious...
  7. tintin75

    electrical design/drafting industry trends.

    greetings all, I am quite new to electrical drafting so I have a few questions and if you are kind enough to give an opinion, please indicate what country you are form so that I may know whether you are IEC or ANSI. I believe schematic diagrams are made for those who must fault find and wiring...
  8. tintin75

    tertiary windings

    thankyou waross and prc. regards tintin75
  9. tintin75

    tertiary windings

    when I say start and finish I think I might be talking about an 'inner' and 'outer' I hope that makes more sense.cheers
  10. tintin75

    tertiary windings

    I just wanted to know why the manufacturer (on the B phase tertiary winding) has swapped the start and finish of the winding (compared with A and C) apologies if the question hasn't been phrased well but when I asked those more knowledgable than myself I was given the reply 'sometimes they do...

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