J
jim beam
Guys (n' girls of course)
I have just started using a 1653B FLUKE and when testing earth loop impedance Ze (ie. impedance of supply - tested at supply origin), I presume I use the 'LOOP IMPEDANCE' setting (line to protective Earth L-PE) using the Z1 Hi current setting, and NOT the 'Earth Resistance Testing (by Loop Method)' which (as it states on pg. 25 of the instruction manual) appears to look only at the earth resistance component of the total loop - & therefore NOT the resistance of the Line conductor path - which is necessary for Ze 0- right?????
So, in other words I'm using exactly the same setting as if I wanted to measure total Zs (eg. at a plug socket or terminals of ceiling rose) it's just that for Ze I measure at the supply origin - but FLUKE tester settings still the same, albeit I may select Z1 "no trip" in RCD in-line.
Is this Correct? I am not 100% sure?
Also, I am guessing that to make a Prospective Short Circuit test that the source impedance between line conductors (line and neutral) is the one to use - and not between line and protective earth.
I know this probably sounds all a bit obvious but I'd really appreciate someone clarifying this to me as I am not familiar with the FLUKE.
Big Thanks!!
P
I have just started using a 1653B FLUKE and when testing earth loop impedance Ze (ie. impedance of supply - tested at supply origin), I presume I use the 'LOOP IMPEDANCE' setting (line to protective Earth L-PE) using the Z1 Hi current setting, and NOT the 'Earth Resistance Testing (by Loop Method)' which (as it states on pg. 25 of the instruction manual) appears to look only at the earth resistance component of the total loop - & therefore NOT the resistance of the Line conductor path - which is necessary for Ze 0- right?????
So, in other words I'm using exactly the same setting as if I wanted to measure total Zs (eg. at a plug socket or terminals of ceiling rose) it's just that for Ze I measure at the supply origin - but FLUKE tester settings still the same, albeit I may select Z1 "no trip" in RCD in-line.
Is this Correct? I am not 100% sure?
Also, I am guessing that to make a Prospective Short Circuit test that the source impedance between line conductors (line and neutral) is the one to use - and not between line and protective earth.
I know this probably sounds all a bit obvious but I'd really appreciate someone clarifying this to me as I am not familiar with the FLUKE.
Big Thanks!!
P