Benning IT 120 B 044102 Manual De Usuario

24

Insulation resistance measurement is performed in order to assure safety against electric shock. 
Using this measurement the following items can be determined:
-   Insulation resistance between installation conductors and protective conductor/earth

-  Insulation resistance of non-conductive rooms (walls and floors)
-  Insulation resistance of earth cables

-  Resistance of semi-conductive (antistatic) floors

How to perform insulation resistance measurement:
Step 1 

Select the R

, ISOLATION/ INSULATION function with the function selector switch. The 

following menu is displayed: 

 

 

Connect the test cable to the BENNING IT 110/ BENNING IT 120 B.

Step 2  

Set the following measuring parameters and limit values:

 

 

- 

 Nominal test voltage

 

 

- 

 Low limit resistance value

 Connect test cable to the item under test. Follow the connection diagram shown in figure

5.2 to perform insulation resistance measurement. Use the Help function if necessary.

switched off 

mains voltage

disconnected 

loads

closed switches

Step 4  

Check the displayed warnings and online voltage/terminal monitor before starting the 
measurement. If OK, press and hold the TEST key until result is stabilised. Actual mea-
sured results are shown on the display during measurement.

 

 

 

 

After the TEST key is released the last measured results are displayed, together with 
the PASS/FAIL indication (if applicable).