Environment­conditions; Electrical Specifications - Benning MM 8 Instrucciones De Servicio

5.1.17 T he safety measuring cables are designed in 4 mm plug-in type technol-
ogy. The safety measuring cables supplied are expressly suited for the
rated voltage
5.1.18 T he BENNING MM 8/ 9/ 10 is protected by a rubber protection frame
against mechanical damage. The rubber protection frame  allows the
B ENNING MM 8/ 9/ 10 to be set up or hung up during the measure-
ment.
5.1.19 T he 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.­ Environment­conditions
- T he BENNING MM 8/ 9/ 10 is intended for making measurements in dry
environment.
- M aximum 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,
- C ontamination class: 2,
- Protection Class: IP 30 (­DIN VDE 0470-1 IEC/ EN 60529)
I P 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).
- O perating temperature and relative humidity:
F or operating temperature from 0 °C to 30 °C: relative humidity less than 80 %
F or operating temperature from 31 °C to 40 °C: relative humidity less than
75 %
F or operating temperature from 41 °C to 50 °C: relative humidity less than 45 %
- S torage temperature: The BENNING MM 8/ 9/ 10 can be stored at any
temperature 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.­ Electrical­specifications
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.­ Direct­voltage­ranges
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 Alternating­voltage­ranges
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 8 is obtained by a mean value recti-
fication and displayed as an effective value.
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
08/ 2007
and the rated current of the BENNING MM 8/ 9/ 10.
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)
­ B ENNING­MM­8/­9/­10­
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
4