MI 3121 Smartec Insulation / Continuity
Continuity
24
Resistance to earth connection and equipotential bonding measurement procedure
Select continuity function RLOW or CONT using the function selector switch.
Set sub-function to
RLOW
.
Enable and set
limit
(optional).
Connect
test cable to the top of the instrument.
Compensate
the test leads resistance (if necessary, see
section 5.2.3
).
Disconnect
from mains supply and discharge installation to be tested.
Connect
the test leads to the appropriate PE wiring (see
figure
5.5
).
Press the
TEST
key to perform the measurement.
After the measurement is finished
store
the result by pressing the MEM button
(optional).
Figure 5.6: Example of RLOW result
Displayed result:
Main RLOW resistance.
Subresults checking
Press the key TAB for a few seconds.
The instrument will display subresult r1.
Click the key TAB.
The instrument will display subresult r2.
Next click on the key TAB will return the instrument to display main result.
5.2.2 Continuous 7 mA resistance measurement CONT
In general, this function serves as standard
Ω
-meter with a low testing current. The
measurement is performed continuously without polarity reversal. The function can also be
applied for testing continuity of inductive components.
