Benning IT 120 B 044102 Manual De Usuario

45

The BENNING IT 120 B allows resistance to earth measurement using 3-wire measuring me-
thod (earthing set). Consider the following instructions when performing resistance to earth 
measurement:

-   The probe (S) is positioned between the earth electrode (E) and auxiliary earth electrode (H) in 

the earth reference plane (see figure 5.45).

-   The distance from the earth electrode (E) to the auxiliary earth electrode (H) must be at least 5 

times the depth or length of the earthing electrode rod (see fig. 5.45).

Step 1 

Select R

E

, ERDE/ EARTH function with the function selector switch. The following menu 

is displayed: 

 

 

Connect the measuring cables to the BENNING IT 120 B.

Set the following measuring parameters and limit values:

 

 

- 

 High limit resistance value

 Follow the connection diagram shown in figure 5.45 to perform resistance to earth mea-

surement. Use the Help function if necessary. 

 

 

(Measuring cables: H = black, S = green, E = blue)

Step 4  

Check the displayed warnings and online voltage/terminal monitor before starting the 
measurement. If OK, press the TEST key. After performing, the measurement results 
appear on the display together with the PASS/FAIL indication (if applicable).