Benning CM 5-1 Notice D'emploi page 20

whichever is greater
Resistance/ continuity
whichever is greater
7.2 Direct voltage ranges
The input resistance for voltages of up to 30 V is at least 4 kΩ. The input resist-
ance increases to 375 kΩ for 750 V with the input voltage increasing as well.
Measuring range
2.1 V ... 1000 V
- 0.7 V ... - 1000 V
Maximum measuring time = 30 seconds for voltages higher than 30 V
*1
7.3 Alternating voltage ranges
The input resistance for voltages of up to 30 V is at least 4 kΩ. The input resist-
ance increases to 375 kΩ for 750 V with the input voltage increasing as well.
Measuring range
1.3 ... 750 V
1.3 ... 750 V
Maximum measuring time = 30 seconds for voltages higher than 30 V
*1
The measuring value is gained and indicated as effective value (True RMS,
*2
AC coupling). The measuring accuracy is specified for sinusoidal curves
and applies to the final value of the measuring range as well as for non-
sinusoidal curves up to 50 % of the final value of the measuring range.
In case of non-sinusoidal curves, the indicating value becomes inaccurate.
Thus, an additional error occurs for the following crest factors:
crest factor from 1.4 to 2.0 additional error + 1 %
crest factor from 2.0 to 2.5 additional error + 2.5 %
crest factor from 2.5 to 3.0 additional error + 4 %
7.4 Direct current ranges
Measuring range Resolution
0.9 A ...600.0 A
The indicated accuracy is specified for conductors which are gripped by means
of the measuring clamp  in the middle (see figure 3 direct/ alternating current
measurement). For conductors which are not gripped in the middle, an addi-
tional error of 1 % of the indicating value has to be considered.
Maximum remanence error: 1 % (during repeating measurement)
7.5 Alternating current ranges
Measuring range Resolution
0.9 A ...600.0 A
0.9 A ... 600.0 A
The measuring value is gained and indicated as effective value (true RMS,
*2
AC coupling). The measuring accuracy is specified for sinusoidal curves
05/ 2019
The following criteria must be met:
V , V
AC DC
Ω
/
Diode
A , A
AC DC
Resolution
0.1 V ± (0.3 % of the measuring value + 2 digits)
0.1 V ± (0.3 % of the measuring value + 2 digits)
Resolution
within the frequency range 50 Hz - 60 Hz
0.1 V ± (0.9 % of the measuring value + 3 digits)
within the frequency range 61 Hz - 500 Hz
0.1 V ± (1.5 % of the measuring value + 3 digits)
0.1 A ± (2.0 % of the measuring value + 5 digit)
within the frequency range 50 Hz - 60 Hz
0.1 A ± (2.0 % of the measuring value + 5 digit)
within the frequency range 61 Hz - 400 Hz
0.1 A ± (2.5 % of the measuring value + 5 digit)
BENNING CM 5-1
Voltage measurement active, if:
1.3 V
2.1 V
DC
- 0.7 V
DC
Resistance measurement active, if
0 Ω ... ∞ Ω
0.0 V
- 0.4 V
1.0 V
Diode test active, if:
0.4 V ... 0.8 V
DC
Current measurement active, if:
0.9 A
0.9 A
DC
Meas. precision
Meas. precision
Meas. precision
Meas. precision
*2
... 750.0 V
AC AC
... 999.9 V
DC
... - 999.9 V
DC
... 0.9 V
AC AC
... - 0.2 V
DC DC
... 2.0 V
DC DC
(forward voltage)
DC
... 600.0 A
AC AC
... 600.0 A
DC
Overload
protection
750 V
750 V
Overload
*2
protection
750 V
750 V
Overload
protection
600 A
Overload
protection
600 A
600 A

*1
eff
eff
*1
eff
eff
eff
eff
eff
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