Measuring
42
Function
Display Meaning Notes
Overrange Insulation resistance greater
than 100 MΩ. Measuring
leads not connected or
misconnected
Measure-
ment of
Insulation
resistance
R
ISO
Effective insulation Insulation resistance less
than 10 kΩ. Measuring leads
short-circuited or for two-pole
measurement-central
selector in wrong position.
Overrange Loop resistance greater than
200 Ω
No measurement
possible
Short-circuit current can not
be computed
Overrange Computed short-circuit
current greater than 9,99 KA.
Earthing/grounding
voltage at I
K
greater
also possible in
combination with R
S
, I
K
, U
N
.
Measure-
ment of loop
resistance
R
LOOP
with probe
Earthing/grounding
voltage can not be
measured
Limits of computation for
contact voltage exceeded. R
s
> 50 Ω; sonde voltage can
not be measured, possibly
greater than 50 V.
Determi-
nation of
rotary field
direction
No determination of
rotary field direction
possible
Not all three wires (L
1
, L
2
,
L
3
) carry a voltage greater
than 20 V. There is no rotary-
field-dependent phase shift
between L
1
, L
2
, L
3.
Overrange
No compensation is being
performed, resistance to be
compensated is greater than
5 Ω. Measuring leads not
connected.
Measure-
ment of
resistance
R
Overrange
Measured resistance greater
than 1 kΩ. Measuring lead
not connected
Legend: = flashing display
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