Ambient Conditions; Electrical Specifications - Benning MM 9 Instrucciones De Servicio

5.1.17 The safety measuring leads supplied are expressly suited for the rated
voltage and the rated current of the BENNING MM 9/ 10.
5.1.18 The BENNING MM 9/ 10 is protected by a rubber protection frame
against mechanical damage. The rubber protection frame  allows the
BENNING MM 9/ 10 to be set up or hung up during the measurement.
5.1.19 The BENNING MM 10 features at its head an optical interface  . This
is used for the galvanic separation of the measuring signal to a PC/ lap-
top. The enclosed data cable is used for the transmission of measuring
data and is equipped with a USB 2.0 compatible connection.
6.

Ambient conditions

- The BENNING MM 9/ 10 is intended for making measurements in dry envi-
ronment.
- Maximum barometric elevation for making measurements: 2000 m,
- Overvoltage category/ Siting category: IEC 60664-1/ IEC 61010-1 → 600 V
category IV; 1000 V category III,
- Contamination class: 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 protec-
tion against water, (0 - second index).
- Operating temperature and relative humidity:
For operating temperature from 0 °C to 30 °C: relative humidity less than 80 %
For operating temperature from 31 °C to 40 °C: relative humidity less than 75 %
For operating temperature from 41 °C to 50 °C: relative humidity less than 45 %
- Storage temperature: The BENNING MM 9/ 10 can be stored at any tem-
perature in the range from - 20 °C to + 60 °C (relative humidity from 0 to 80
%). The battery should be taken out of the instrument for storage.
7.

Electrical specifications

Note: The measuring precision is specified as the sum of
- a relative fraction of the measured value and
- a number of digits (counting steps of the least significant digit).
This specified measuring precision is valid for temperatures in the range from
18 °C to 28 °C and relative humidity less than 80 %.
7.1 Direct voltage ranges
The input resistance amounts to 10 MΩ (within the 400 mV range 1 GΩ).
Measuring
Resolution
range
600 mV
6 V
60 V
600 V 100 mV
1000 V
7.2 Alternating voltage ranges
The input resistance amounts to 10 MΩ parallel 100 pF.
Measuring
Resolution
range
600 mV
6 V
60 V
600 V 100 mV
750 V
The measured value of the BENNING MM 9/ 10 is obtained as a real effective
value (TRUE RMS) and then displayed.
The measuring accuracy is specified for sinusoidal curves and is valid for
*1
indicating values below 4000 digits. For indicating values higher than 4000
digits 0.6 % have to be added to the specified measuring accuracy. In case
of non-sinusoidal curves below 2000 digits, the indicating value becomes
inaccurate. Thus, an additional error occurs for the following crest factors:
crest factor from 1.4 to 3.0 additional error ± 1.5 %
valid for sinusoidal curves 50 Hz/ 60 Hz
*2
03/ 2011
100 µV ± (0.5 % of the measured value + 2 digits)
1 mV ± (0.5 % of the measured value + 2 digits)
10 mV ± (0.5 % of the measured value + 2 digits)
± (0.5 % of the measured value + 2 digits)
1 V ± (0.5 % of the measured value + 2 digits)
Meas. precision
100 µV ± (0.9 % of the measured value + 5 digits)
1 mV ± (0.9 % of the measured value + 5 digits)
10 mV ± (0.9 % of the measured value + 5 digits)
± (0.9 % of the measured value + 5 digits)
1 V ± (0.9 % of the measured value + 5 digits)
BENNING MM 9/ 10
Meas. precision
within the frequency
*1
range 50 Hz - 500 Hz

Overload
protection
1000 V
DC
1000 V
DC
1000 V
DC
1000 V
DC
1000 V
DC
Overload
protection
750 V
*2
eff
750 V
*2
eff
750 V
*2
eff
750 V
*2
eff
750 V
*2
eff
14