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Post Brexit - Why are we still permitting CENELEC etc to influence how we govern our own engineering affairs?

whjohnson

There seems to be a repeating mantra throughout the youtube presentation which becomes irksome if you listen for long enough. It seems that we just adopt, or rather 'harmonize' without question and then defer the responsibility for decision making back to CENELEC rather than think it through and act for ourselves.

How is it that we allow the tail to wag the dog? Isn't it time that we departed from harmonization and went our own way?

Comments welcome

Parents
  • 0

    You may be thinking of F types that are designed to look for HF, B types have a detection for static DC, normally a hall effect device but sometimes it is done with a core is swept with an AC and asymmetry in the saturation is detected. (that is a surprisingly good technique, and I have used it as the basis of an electronic compass in the past.)

    However a rodent will be substantially resistive, and even the semi-obsolescent AC only types will pick that up.

    Be aware that by installing more complex devices than you need for circuit protection you are both inviting earlier failure and increasing the standby losses of your installation - all that electronics does not run for free - it may only be a few watts, but up and down the land, a careless attitude to wasted energy  adds up.

    Your best bet is perhaps to employ a cat - if you did so in the UK cat food for working cats attracts a lower rate of tax than that for pets, though I suspect Germany is not so silly. ( the sale of 'animal feeding stuffs', unless biscuit or meal, can be zero rated with the exception of 'pet foods'.)

    However I fear a truly 'working' cat is an oxymoron. The two states seem to be sleeping and playing.

    Mike.

Reply
  • 0

    You may be thinking of F types that are designed to look for HF, B types have a detection for static DC, normally a hall effect device but sometimes it is done with a core is swept with an AC and asymmetry in the saturation is detected. (that is a surprisingly good technique, and I have used it as the basis of an electronic compass in the past.)

    However a rodent will be substantially resistive, and even the semi-obsolescent AC only types will pick that up.

    Be aware that by installing more complex devices than you need for circuit protection you are both inviting earlier failure and increasing the standby losses of your installation - all that electronics does not run for free - it may only be a few watts, but up and down the land, a careless attitude to wasted energy  adds up.

    Your best bet is perhaps to employ a cat - if you did so in the UK cat food for working cats attracts a lower rate of tax than that for pets, though I suspect Germany is not so silly. ( the sale of 'animal feeding stuffs', unless biscuit or meal, can be zero rated with the exception of 'pet foods'.)

    However I fear a truly 'working' cat is an oxymoron. The two states seem to be sleeping and playing.

    Mike.

Children
  • 0 in reply to mapj1

    Mike - (tongue in cheek) Would the cat in question have to be one approved by a committee such as CENELEC prior to use perchance?

  • 0 in reply to mapj1

    I can't claim to be expert on the signals generated in chewed cables but I'd have thought B suffices. If it's any better than A ..... I don't have stats, and I don't think the ZVEI has them (the electrician's professional society in Germany).

    As for the cat, done. But in a competition between a cat and a marten, I would favour the marten. My neighbour on the one side had at one point three cats (one wild) and a marten. The local marten is with the neighbours on my other side (at least, the one I've seen). 

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