measurement of distribution

[pc electrical]

could any one explain how this system works

there is 2 three phase meters, from there iv traced the cables to (1) 800a switch
how do the meters measure the 2 different loads??????

i have done a quick drawing
please see attachment

thanks
paul

 

[Engineer54]

Pass!! lol!!

 

[spark 68]

That cannot work as drawn, the Cts need to be either around the supply lines to the individual loads, or if more than one supply is present around the supply lines themselves.

The voltage inputs to the meters as well as the meter supply itself (as opposed to the current inputs) may be before or after the isolator, or even commoned where one supply is used

 

[snowhead]

0.9 out 0f 10

They can't be connected as drawn and work.
The tracing must be slightly out

 

[Charlie_]

Is it a dual tariff installation?
Is there also some panel ammeters?

 

[pc electrical]

this was my conclusion, thought i might be missing something. will have to do some investigations lol

 

[pc electrical]

charlie no and no lol

i will have to investigate into it more lol

 

[Knobhead]

Is there a summation meter linked in?

If not you’ve totally cocked your interpretation of the system up.

 

[ImpededLoop]

There's no way that can work as drawn. Do the meters actually have a 3 phase supply and are the CT's located as shown?

 

[pc electrical]

yeah what iv drawn is what i can see..... common seance tells me this can not work but it is lol there must be something im not seeing. will have to go back to factory and investigate a bit more

 

[Knobhead]

Take some photo's

 

[pc electrical]

how do i insert pics it wont let me??

 

[Knobhead]

The best way is via PhotoBucket if you have an account with them. Otherwise contact one of the moderators to give you permission to upload. Your post count may be against you.

This has got me interested so would like to see the set up.

 

[Marvo]

how do i insert pics it wont let me??

Same way you did it in the first post. You have full user permissions already so you should be able to attach pics as long as they're not a massive filesize.

 

[Knobhead]

Didn't notice that..........