Measuring Resistance (R), Compensation Of Additional Line Resistance - LEM SATURN 100 plus Instrucciones De Uso

Measuring
3.10 Measuring Resistance (R), Compensation of
Additional Line Resistance
In the measuring mode Resistance Measurement, resistances up to 20 Ohm can be
measured with battery DC voltage and automatic pole-change as per IEC61557-4.
Continuity checks can be performed fully automatically with battery DC. The built-in
buzzer responds to resistances <2 Ohm (compensation of the measuring-lead
resistances is inactive).
For compensation of the measuring-lead
Compensation" is available.
Measuring Process:
L2
L3
R
Observe overload capacity and connect instrument as shown. Connect
instrument as per Figure with 3-pole measuring lead.
Connect measuring lead L with measuring lead L
3
Turn central selector in mode „R" to position „1 kΩ".
The Voltage „U " between the measuring leads L
L-N
displayed (see also section 3.6).
Pressing key „Start" starts the resistance measurement, the plus pole of the
voltage being first applied to L and earth/ground to L
2
automatic pole-change. The value displayed is the measured value minus the line
resistance of the measuring lead (if the compensation is active), labelled resistance
R (corresponding to L = plus pole
1 2
L = earth/ground).
1
S
Pressing key „Display" makes R (corresponding to L
2
earth/ground) available for display.
For a new measurement press key Start" again.
To return to the original measurement for displaying the mains voltage U
the central selector.
resistances, a function „Zero
R
X
L1
L 1 = brown
L 2 = black
L 3 = purple
Instrument
.
2
and L + L is automatically
1 2 3
- with subsequent
1
= plus pole, L =
1 2
, twist
L-PE
36