Benning IT 120 B 044102 用户手册
产品代码
044102
24
5
Measurements
5.1 Insulation resistance (R
ISO
)
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
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
- Insulation resistance of earth cables
- Resistance of semi-conductive (antistatic) floors
How to perform insulation resistance measurement:
Step 1
Step 1
Select the R
ISO
, ISOLATION/ INSULATION function with the function selector switch. The
following menu is displayed:
Fig. 5.1: Insulation resistance measurement menu
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
Step 3
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
Fig. 5.2: Connection of universal test cable and tip commander
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.
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).
the PASS/FAIL indication (if applicable).