what tests to do?lv panel

[bredon86]

i am testing a lv panel in a factory which has 20 ways feeding all each isolator for each piece of machinery. is it possible to still do a full test or can you not test live. therefore not gather a zs reading?


cheers

 

[bugsy]

How are going to test Zs with it isolated ? I/R , R1 + R2 and Zs ( keeep you bust for an hor or so!

 

[bredon86]

theres an isolator with 3 phase sockets underneath then to the machine? so take the zs at the sockets????

 

[IQ Electrical]

theres an isolator with 3 phase sockets underneath then to the machine? so take the zs at the sockets????

Spot on, if there was no socket then you would normally get a Zs at the isolator and do an R2 continuity check between machine and isolator just to prove cpc continuity.

 

[bredon86]

so you can get a zs at the isolator??

 

[IQ Electrical]

Yes but you might as well use the socket if it's accessible.