Measuring
18
3.6 Voltage, Frequency, Rotary-Field Direction
This measuring mode is enabled automatically in any position of the central
selector before
pressing key R „Start“ .
AC voltages from 0 to 500 V (46 to 65 Hz) may be displayed and frequencies from
15.3 Hz to 457 Hz. Voltages with < 46 Hz or > 65 Hz as well as DC voltages cannot
be measured (display „- - -“). The measured voltage is that between the lines L-PE
and N-PE, the higher of the two being displayed as „U
L-PE
“. In addition, in this
measuring mode it is possible to call up the voltage between lines N and PE. In the
modes Earth/ground-Connection Resistance, Fault-Current-Protection Circuit and
Loop Resistance / L-PE with connected probe also the voltage between PE and
probe as „U
S-PE
“ (condition: „U
L-PE
“ must be present). If no protective-wire (PE)
connection is provided for the measurement, e.g. in mode Loop Resistance
Measurement in position L-N, only the voltage „U
L-N
“ between the measuring leads
L and N and the frequency can be measured and displayed..
Measuring process:
L
1
= brown
L
2
= black
L
3
= purple
Instrument
Marker
L3
L1
L2
RB
L
2
L
1
L
3
N
P
E
(PEN)
L3
L1
L2
Instrument
Instrument
M
RA
Observe overload capacity and connect instrument as shown.
Turn central selector to any position, except R
ISO
/L-N and R
LOOP
/L-N.
Read measured value „U
L-PE
“.
By pressing key
S „Display“, the second voltage „U
N-PE
“ may also be
displayed. Another depression of the key „Display“ will measure the
frequency. For a double-pole-measurement, e.g. fault voltage measurement
between two points, measuring lead L
1
must be connected to line L
3
. The
To Next Page
Loading...
