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Recent content by sparky43

  1. sparky43

    E-stop master slave regulations

    Thanks for the link. that's exactly why we are doing it, because of the confusion for the operators. all three current zones are using cat 3 hardware, all connected using the same e-stop phylosophy.
  2. sparky43

    E-stop master slave regulations

    We have a production line that has 3 e-stop zones, and in each zone we have 1 master and 1 slave. I have been asked to look at converting the 3 zones in to 1 zone. I want to keep this as simple as possible but obviously stay within the current regulations and standards. I want to make 2 of the...
  3. sparky43

    earth loop impedance testing

    Hi Pugwash i managed to find the info in the 16th edition regs table 471A gives me the info i needed & this link helped. http://www.tlc-direct.co.uk/Book/7.16.4.htm thanks for the help and the information. regards sparky
  4. sparky43

    earth loop impedance testing

    Do i have to do a Zs test on sockets that are fed from a centre tapped 110V transformer. I can't find any reference to the max Zs values of a nominal voltage of 55V to earth. any help appreciated. sparky

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