Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 18 replies
  • Subscribers 32 subscribers
  • Views 3294 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Band I / Band II cct separation

Farmboy
Does the principal of Band I / Band II  cct separation re 528.1 apply within equipment? A DETA mechanical chime with internal transformer has LV and ELV wiring right near each other within the same enclosure (the lid of which is easily removable without tools), which seems to moot the requirement to have them separated as per the reg?


F
Parents
  • 0
    Your copy of BS7671 is clearly a bit different to mine.  I'd like commercial 690V and 400V 3 phase supplies with a few hundred amp loads to be designed to BS7671 if it is practical please, and some high power stuff too if we have to.


    The 11KV (6k6 to ground) side of the transformer comes under different rules to be fair, but fixed installation at 1000V RMS and down at any current you fancy could be  BS7671.

    Are  you perhaps thinking of the on-site guide ?

Reply
  • 0
    Your copy of BS7671 is clearly a bit different to mine.  I'd like commercial 690V and 400V 3 phase supplies with a few hundred amp loads to be designed to BS7671 if it is practical please, and some high power stuff too if we have to.


    The 11KV (6k6 to ground) side of the transformer comes under different rules to be fair, but fixed installation at 1000V RMS and down at any current you fancy could be  BS7671.

    Are  you perhaps thinking of the on-site guide ?

Children
No Data

Community Rules & Guidelines