Electrical Data - Benning CM 12 Bedienungsanleitung

- Degree of contamination: 2
- Protection class: IP 30 (DIN VDE 0470-1 IEC/ EN 60529).
IP 30 means: Protection against access to dangerous parts and protection
against solid impurities of a diameter > 2.5 mm, (3 - first index). No protection
against water, (0 - second index).
- Operating temperature and relative humidity:
At operating temperatures of 0 °C to 30 °C: relative humidity under 80 %.
At operating temperatures of 31 °C to 40 °C: relative humidity under 75 %.
At operating temperatures of 41 °C to 50 °C: relative humidity under 45 %.
- Storage temperature: The BENNING CM 12 can be stored at temperatures
from - 10 °C to + 50 °C (humidity 0 up to 80 %). The batteries must be re-
moved from the unit.
7.

Electrical data

Note: The measurement accuracy is stated as the sum of
- a relative proportion of the measurement value and
- a number of digits (i.e. numerical steps of the last place).
This measurement accuracy applies for a temperature of 18 °C to 28 °C and a
maximum relative humidity of max. 80 %.
7.1 Voltage ranges
Overload protection: 1000 V
Function Measuring
V AC
V AC (HFR)
V DC
V AC range below 1,000 digits plus 3 digits
[1]
V DC range below 1,000 digits plus 6 digits
Input resistance: 3.5 MΩ, < 100 pF
Additional specifications:
The measured value is obtained and displayed as a true effective value (TRUE
RMS). Selectable coupling type: AC or AC+DC. For AC+DC coupling, the ac-
curacy specifications for VAC + VDC have to be added. In the case of non-sinus-
shaped curves (50 Hz/ 60 Hz) the display value becomes less precise. Thus an
additional error results for the following crest factors:
Crest factor from 1.4 to 2.0 additional errors + 1.0 %
Crest factor from 2.0 to 2.5 additional errors + 2.5 %
Crest factor from 2.5 to 3.0 additional errors + 4.0 %
Crest-Faktor 3 @ 460 V, 280 A
Crest-Faktor 2 @ 690 V, 420 A
HFR high-frequency suppression (low-pass filter):
Limiting frequency (- 3 dB): 1000 Hz
Attenuation: approx. - 18 dB
7.1.1 PEAK-HOLD function (memory of peak value)
Function Measuring
V AC
Measuring accuracy specified for sinusoidal curves > 5 V
Rectangular shapes of the curve are unspecified.
08/ 2018
AC/DC
Resolution
range
99.99 V 10 mV
999.9 V 0.1 V
99.99 V 10 mV
999.9 V 0.1 V
99.99 V 10 mV
999.9 V 0.1 V
Resolution
range
140.0 V 0.1 V
1400 V 1 V
BENNING CM 12
Measurement accuracy
± (1.0 % of measured value + 5 digits), 50 Hz - 500 Hz
± (1.0 % of measured value + 5 digits), 50 Hz - 60 Hz
± (5.0 % of measured value + 5 digits), > 60 Hz - 400 Hz
± (0.7 % of measured value + 2 digits)
Measurement accuracy
± 3 % + 15 digits (50 Hz - 400 Hz)
[1]
with repetitive events.
eff
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